JP2006031745A - Device for recording and reproducing av data - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain compatibility regarding the recording and reproducing of a moving image and the recording and reproducing of the play list of the moving image between a device for recording and reproducing a moving image only corresponding to a moving image recording format alone and a device for recording a still image as well with a moving image recording format as a base, and simultaneously to record and reproduce the still image. <P>SOLUTION: The device capable of recording both moving and still images contains not only first reproduction path information for managing the reproduction order of moving images but also second reproduction path information for managing the reproducing order of the moving and still images. During moving image recording, the moving image is registered only in the first reproduction path information, and link information is registered in the second reproduction path information. During still image recording, still image data are registered only in the second reproduction path information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a readable / writable recording medium, and in particular, a recording medium, a recording apparatus, and a reproduction medium on which multimedia data including data of various formats such as moving image data, still image data, audio data, and data broadcasting is recorded. The present invention relates to an apparatus, a recording method, a reproduction method, and a program.

  In the field of rewritable optical discs where the upper limit was about 650 MB, a phase change disc DVD-RAM having a capacity of 4.7 GB and a Blu-ray disc having a capacity of 25 GB appeared. Combined with the practical application of MPEG (MPEG2), which is an encoding standard for digital AV data, DVD-RAM and Blu-ray Disc are expected not only for computer use but also as a recording / playback medium in the audio / video (AV) technical field. .

  Hereinafter, a DVD disk, a DVD recorder, and a DVD player, which are embodiments of a conventional information recording medium, recording apparatus, and reproducing apparatus, will be described in the following order. 1. 1. System overview of DVD recorder device 2. Outline of functions of DVD recorder device Outline of DVD disc, 4. 4. Outline of reproduced AV information 5. Management information of AV information and overview of playback control, 6. Basic operation of playback function, 7. Basic operation of recording function Linking motion between video and still image.

(1. System overview of DVD recorder device)
FIG. 1 is a diagram for explaining an example of the interface between a DVD recorder device and related equipment. As shown in FIG. 1, a DVD, which is an optical disk, is loaded in a DVD recorder, and video information is recorded and reproduced. The operation is generally performed with a remote controller.

  The video information input to the DVD recorder includes both an analog signal and a digital signal. The analog signal includes analog broadcast, and the digital signal includes digital broadcast. In general, an analog broadcast is received and demodulated by a receiver built in a television apparatus and input to a DVD recorder as an analog video signal such as NTSC, and a digital broadcast is received by an STB (Set Top Box) as a receiver. Demodulated into a digital signal and input to a DVD recorder for recording.

  On the other hand, a DVD disc on which video information is recorded is reproduced by a DVD recorder and output to the outside. Similarly to the input, both the analog signal and the digital signal are output. If the signal is an analog signal, the signal is directly input to the television device. If the signal is a digital signal, the signal is input to the television device via the STB and then converted to the analog signal. The video is input and displayed on the television device.

  Further, video information may be recorded and reproduced on a DVD disc by a DVD camcorder other than the DVD recorder or a personal computer. Even if it is a DVD disc on which video information is recorded outside the DVD recorder, the DVD recorder reproduces it if it is loaded in the DVD recorder.

  Note that audio information is usually attached to the video information of the analog broadcast and digital broadcast described above. The accompanying audio information is similarly recorded and reproduced by the DVD recorder. The video information is generally a moving image, but it may be a still image. For example, this is the case when a still image is recorded by the photo function of a DVD camcorder.

  The digital I / F between the DVD recorder and an external device such as STB can be IEEE 1394, ATAPI, SCSI, USB, Ethernet (registered trademark), or the like.

  In addition, although NTSC which is a composite video signal was illustrated between the DVD recorder and the television apparatus, a component signal for separately transmitting a luminance signal and a color difference signal may be used. Furthermore, the video transmission I / F between the AV equipment and the television apparatus is being researched and developed to replace the analog I / F with a digital I / F, for example, DVI, and the DVD recorder and the television apparatus are digital I / F. Of course, it is expected to be connected by / F.

(2. Function overview of DVD recorder device)
FIG. 2 is a block diagram showing functions of the DVD recorder apparatus. The drive device includes an optical pickup 101 that reads data from the DVD-RAM disc 100, an ECC (Error Correcting Code) processing unit 102, a track buffer 103, a switch 104 that switches input / output of the track buffer 103, an encoder unit 105, and a decoder unit 106. Prepare. As shown in the figure, data is recorded on the DVD-RAM disc 100 with 1 sector = 2 KB as a minimum unit. Also, error correction processing is performed by the ECC processing unit 102 in units of ECC blocks, with 16 sectors = 1 ECC block.

  The DVD recorder device may include a semiconductor memory card or a hard disk drive device as a data storage medium in addition to the DVD-RAM disk. FIG. 4 shows a block diagram of a DVD recorder provided with a semiconductor memory card and a hard disk drive device. One sector may be 512B, 8KB, or the like. The ECC block may be 1 sector, 16 sectors, 32 sectors, or the like. As the information capacity that can be recorded increases, the sector size and the number of sectors constituting the ECC block are expected to increase.

  The track buffer 103 is a buffer for recording AV data at a variable bit rate (VBR) in order to record AV data on the DVD-RAM disk 100 more efficiently. Since the read / write rate (Va) to the DVD-RAM 100 is a fixed rate, the AV data has a bit rate (Vb) that changes according to the complexity of its contents (image if video). It is a buffer for absorbing the bit rate difference.

  When the track buffer 103 is further effectively used, AV data can be discretely arranged on the DVD-RAM disk 100. This will be described with reference to FIG. FIG. 3A shows an address space on the disk. As shown in FIG. 3A, when AV data is recorded separately in a continuous area of [a1, a2] and a continuous area of [a3, a4], a track is tracked while seeking from a2 to a3. By supplying the data stored in the buffer to the decoder unit 106, AV data can be continuously reproduced. FIG. 3B shows the state at this time.

  The AV data that has been read out at the position a1 is input to the track buffer 103 from time t1 and the output of data from the track buffer 103 is started. As a result, data is accumulated in the track buffer by the rate difference (Va−Vb) between the input rate (Va) to the track buffer and the output rate (Vb) from the track buffer. This state continues until the search area reaches a2, that is, until time t2. Assuming that the amount of data stored in the track buffer 103 during this period is B (t2), B (t2) stored in the track buffer 103 from time t2 to time t3 when reading of data in the area a3 is started. As long as it can be continuously supplied to the decoder 106.

  In other words, if the amount of data to be read before seeking ([a1, a2]) is secured to a certain amount or more, AV data can be continuously supplied even if a seek occurs. The size of a continuous area in which AV data can be continuously supplied is expressed by the following equation when converted into the number of ECC blocks (N_ecc). In the equation, N_sec is the number of sectors constituting the ECC block, S_size is the sector size, and Tj is the seek performance (maximum seek time).

N_ecc = Vb * Tj /
((N_sec * 8 * S_size) * (1-Vb / Va))
In addition, defective sectors may occur in the continuous area. Considering this case as well, the continuous region is expressed by the following equation. In the equation, dN_ecc is the size of the defective sector that is accepted, and Ts is the time required to skip the defective sector in the continuous region. This size is also expressed by the number of ECC blocks.

N_ecc = dN_ecc + Vb * (Tj + Ts) /
((N_sec * 8 * S_size) * (1-Vb / Va))
Here, an example in which data is read from the DVD-RAM, that is, reproduction is described, but writing data to the DVD-RAM, that is, recording can be considered in the same manner. As described above, in a DVD-RAM, as long as a certain amount or more of data is continuously recorded, continuous playback / recording is possible even if AV data is distributedly recorded on the disk. In DVD, this continuous area is called CDA.

(3. Overview of DVD disc)
FIG. 5 is a diagram showing the appearance and physical structure of a DVD-RAM disc that is a recordable optical disc. Note that the DVD-RAM is generally loaded into the DVD recorder while being stored in a cartridge. The purpose is to protect the recording surface. However, the recording surface may be protected by another configuration, or if it is acceptable, the recording surface may be directly loaded into the DVD recorder without being stored in the cartridge.

  DVD-RAM discs record data by the phase change method. The recorded data on the disk is managed in units of sectors and accompanied with an access address. The 16 sectors are units for error correction, and are given an error correction code and are called ECC blocks.

  FIG. 5A shows a recording area of a DVD-RAM disc that is a recordable optical disc. As shown in the figure, the DVD-RAM disc has a lead-in area at the innermost periphery, a lead-out area at the outermost periphery, and a data area therebetween. In the lead-in area, a reference signal necessary for stabilizing the servo at the time of accessing the optical pickup, an identification signal with other media, and the like are recorded. In the lead-out area, the same reference signal as the lead-in area is recorded. The data area is divided into sectors (2048 bytes) which are the minimum access unit.

  Further, in the DVD-RAM, a data area is divided into a plurality of zone areas in order to realize rotation control called Z-CLV (Zone Constant Linear Velocity) during recording / reproduction.

  FIG. 5A is a diagram showing a plurality of zone regions provided concentrically on the DVD-RAM. As shown in the figure, the DVD-RAM is divided into 24 zone areas, zone 0 to zone 23. The rotational angular velocity of the DVD-RAM is set for each zone area so as to be faster in the inner peripheral zone, and is kept constant while the optical pickup accesses in one zone. This increases the recording density of the DVD-RAM and facilitates rotation control during recording and reproduction.

  FIG. 5B is an explanatory diagram in which the lead-in area, the lead-out area, and the zone areas 0 to 23 shown concentrically in FIG. 5A are arranged in the horizontal direction. The lead-in area and the lead-out area have a defect management area (DMA: Defect Management Area) therein. The defect management area refers to an area in which position information indicating the position of a sector in which a defect has occurred and replacement position information indicating in which of the replacement areas a sector that replaces the defective sector exists. .

  Each zone area has a user area therein, and an alternative area and an unused area at the boundary. The user area is an area that the file system can use as a recording area. The replacement area is an area used as a replacement when a defective sector exists. The unused area is an area that is not used for data recording. Unused areas are provided for about two tracks. The unused area is provided because the sector address is recorded at the same position of the adjacent track in the zone, but in Z-CLV, the recording position of the sector address is different in the track adjacent to the zone boundary. This is to prevent erroneous sector address discrimination.

  Thus, there are sectors that are not used for data recording at the zone boundaries. Therefore, the DVD-RAM assigns logical sector numbers (LSN: Logical Sector Number) to physical sectors in the user area in order from the inner periphery so that only the sectors used for data recording are shown continuously.

  FIG. 6 shows a logical data space of a DVD-RAM composed of logical sectors. The logical data space is called a volume space and records user data. The volume area manages recording data with a file system. That is, information for managing a group of sectors for storing data as a file and further managing information as a group of files as a directory is recorded in a partition space in the volume space, and a volume structure for managing the partition space, etc. Information is recorded at the beginning and end of the volume area. The file system of this embodiment is called UDF and conforms to the ISO 13346 standard.

  Note that the group of sectors is not necessarily arranged continuously in the volume space, but is partially arranged discretely. For this reason, the file system manages a group of sectors arranged continuously in the volume space among the sector groups constituting the file as extents, and manages the file as a set of related extents.

  FIG. 7 shows the directory and file structure of moving image data recorded on the DVD-RAM. Below the root is a VIDEO_RT directory, under which a file of various objects that are data for reproduction, and a VIDEO Manager file as management information indicating their reproduction order and various attributes are stored.

  The object is data conforming to the MPEG standard, and includes PS_VOB, TS1_VOB, TS2_VOB, AOB, POB, and MNF.

  PS_VOB, AOB, and POB are MPEG program streams (PS), and TS1_VOB and TS2_VOB are transport streams (TS). The program stream has a data structure in consideration of storing AV information in the package medium, while the transport stream has a data structure in consideration of the communication medium.

  In general, each of PS_VOB, TS1_VOB, and TS2_VOB is an object having both video information and audio information and mainly video information. Among these, TS1_VOB is an object that is encoded by a DVD recorder and the internal picture structure is managed in detail, and TS2_VOB is an object encoded outside the DVD recorder. An object whose structure is partially unknown.

  Typically, TS1_VOB is an object obtained by encoding an externally input analog video signal into a transport stream by a DVD recorder, and TS2_VOB is an object recorded directly on a disc without encoding an externally input digital video signal. It is.

  AOB and POB are MPEG program streams, AOB is an object mainly composed of audio information, and POB is an object mainly composed of a still image. The MNF is a file unique to the manufacturer and stores additional information for supporting the operation of the recording / reproducing apparatus.

  It is not always necessary to record all of these PS_VOB, POB, AOB, TS1_VOB, and TS2_VOB.

  The above-mentioned video information main body and audio information main body means that the bit rate allocation is large. VOB is used for applications such as movies, and AOB is used for music applications.

  FIG. 20 shows the directory and file structure of still image data recorded on the DVD-RAM. Here, a directory and file structure according to the DCF standard will be described as an example.

  Below the root is a DCF image root directory (directory name: DCIM), and below that is a DCF directory for storing images.

  A DCF object that is data for reproduction is stored under the DCF directory.

  The DCF object is a file group recorded in accordance with the rules defined by the DCF, and includes a DCF basic file, a DCF extended image file, a DCF thumbnail file, and the like.

  The DCF basic file is an image file recorded immediately under the DCF directory, having a DCF file name and an extension “JPG”, and having a data structure defined by the DCF standard in conformity with the Exif standard.

  The DCF extended image file is an image file recorded directly under the DCF directory and having a DCF file name but having an extension and a data structure different from those of the DCF basic file.

  The DCF thumbnail file is a compressed file for recording a thumbnail of the DCF extended image file.

  Note that it is not always necessary to record all of these DCF basic files, DCF extended image files, and DCF thumbnail files.

  The above-described DCF basic file and DCF extended image file have been recorded as very high-definition still image data due to the recent development of image input devices such as a CCD.

(4. Overview of reproduced AV information)
FIG. 8 is a diagram showing the structure of MPEG data recorded as various AV objects on a DVD disc. As shown in FIG. 8, the video stream and the audio stream are each divided and multiplexed. In the MPEG standard, the multiplexed stream is called a system stream. In the case of a DVD, a system stream in which information specific to the DVD is set is called a VOB (Video Object). The unit of division is called a pack packet and has a data amount of about 2 KB.

  The video stream is encoded according to the MPEG standard, is compressed at a variable bit rate, and the bit rate is high for complex video such as intense motion. In the MPEG standard, each picture of a video is encoded by being classified into an I picture, a P picture, and a B picture. Among these, the I picture is subjected to spatial compression coding that is completed within a frame, and the P picture and B picture are subjected to temporal compression coding using the correlation between frames. In MPEG, a section including at least an I picture is managed as a GOP (Group of Pictures). GOP becomes an access point for special playback such as fast-forward playback. This is because it has an I picture compressed in a frame. On the other hand, in the case of DVD, AC3 or LPCM encoding is used in addition to MPEG audio AAC and MP3 in the case of DVD.

  As shown in FIG. 8, a multiplexed data unit including video information constituting a GOP and accompanying audio information is called a VOBU (Video Object Unit). The VOBU may include information for managing the moving image section as header information. The system stream described in FIG. 8 includes a program stream (PS) and a transport stream (TS). The former has a data structure in consideration of package media, and the latter has a data structure in consideration of communication media.

  FIG. 9 is a diagram for explaining the outline of the data structure of the program stream and the transport stream. The program stream is composed of a fixed-length pack that is a minimum unit of transmission and multiplexing, and the pack further includes one or more packets. Both packs and packets have a header part and a data part. In MPEG, the data part is called a payload. In the case of DVD, the fixed length of the pack is 2 KB, consistent with the sector size. A pack can have a plurality of packets, but a pack for storing DVD video and audio has only one packet, so one pack = 1 packet except in special cases.

  On the other hand, the transport stream transmission and multiplexing unit consists of fixed-length TS packets. The size of the TS packet is 188B, which is consistent with ATM transmission, which is a communication standard. One or more TS packets gather to form a PES packet. The PES packet is a concept common to the program stream and the transport stream, and the data structure is common. The packets stored in the program stream pack directly constitute a PES packet, and one or more transport stream TS packets gather to form a PES packet.

  The PES packet is a minimum unit of encoding, and stores video information and audio information that are common to encoding. That is, video information and audio information having different encoding methods are not mixedly stored in one PES packet. However, it is not necessary to guarantee the picture boundary or the audio frame boundary if the encoding method is the same. As shown in FIG. 9, there may be a case where one I picture is stored in a plurality of PES packets, or a plurality of picture data is stored in one PES packet.

  10 and 11 show individual data structures of the transport stream and the program stream. As shown in FIGS. 10 and 11, the TS packet is composed of a TS packet header, an application field, and a payload portion. The TS packet header stores a PID (Packet Identifier), thereby identifying various streams such as a video stream or an audio stream to which the TS packet belongs.

  The application field stores PCR (Program Clock Reference). PCR is a reference value of a standard clock (STC) of a device that decodes a stream. The device typically demultiplexes the system stream at the timing of PCR and reconstructs it into various streams such as a video stream.

  In the PES header, DTS (Decoding Time Stamp) and PTS (Presentation Time Stamp) are stored. DTS indicates the decoding timing of the picture / audio frame stored in the PES packet, and PTS indicates the presentation timing such as video / audio output. Note that it is not necessary to have PTS and DTS in all PES packet headers, and there is no problem in decoding and output if PTS and DTS are included in the header of the PES packet in which storage of the leading data of the I picture is started.

  Details of the structure of the TS packet are shown in FIG. As shown in FIG. 12, in addition to PCR, a random access display flag is stored in the application field, and data corresponding to the head of a video / audio frame and serving as an access point is stored in the corresponding payload portion by the flag. Indicates whether or not. In addition to the PID described above, a unit start display flag indicating the start of the PES packet and application field control information indicating whether the application field follows are stored in the header portion of the TS packet.

  FIG. 11 shows the structure of a pack that constitutes a program stream. The pack has SCR and StreamID in the pack header. The SCR is substantially the same as the PCR of the transport stream, and the StreamID is substantially the same as the PID. Since the data structure of the PES packet is the same as that of the transport stream, PTS and DTS are stored in the PES header.

  One of the major differences between a program stream and a transport stream is that multiple programs are allowed in the transport stream. That is, it is assumed that only one program can be transmitted in the unit of program, but the transport stream transmits a plurality of programs simultaneously. For this reason, in the transport stream, it is necessary for the playback device to identify either the video stream or the audio stream that constitutes the program for each program.

  FIG. 13 shows a PAT table and a PMAP table for transmitting the configuration information of the audio stream and video stream constituting the program. As shown in FIG. 13, the PMAP table stores information related to the combination of the video stream and the audio stream used for each program, and the PAT table stores information related to the combination of the program and the PMAP table. The playback apparatus can detect a video stream and an audio stream constituting a program whose output is requested by the PAT table and the PMAP table.

  Next, the arrangement of program stream packs and transport stream TS packets described above on the disk will be described with reference to FIG. As shown in FIG. 14A, the 16 sectors constitute an ECC block. A pack (PS Pack) that constitutes a video object (PS_VOB) that takes the form of a program stream is arranged on a sector boundary as shown in FIG. This is because the pack size and sector size are 2 KB.

  On the other hand, a video object (TS1-VOB / TS2-VOB) in the form of a transport stream is arranged in an ECC block in units of a size of 8 KB called a capsule. The capsule has an 18B header area, and 43 TS packets to which ATS information is added are arranged in the data area. ATS information (Arrival Time Stamp Information) is information generated and added by the DVD recorder, and is information indicating the timing at which the packet is transmitted from the outside to the DVD recorder.

  In the above description, 43 MPEG transport packets are stored in an 8 KB capsule. However, the present invention is not limited to this, and one ATS (fixed byte length) and one MPEG transport packet are paired. In such a format, recording may be performed by a method such as forming TS1-VOB / TS2-VOB.

(5. Overview of AV information management information and playback control)
FIGS. 15 and 16 are diagrams showing the data structure of a file called video management information (Video Manager) shown in FIG. The video management information includes object information indicating management information such as recording positions of various objects on the disc, and reproduction control information indicating the reproduction order of the objects.

  FIG. 15 shows a case where there are PS-VOB # 1 to PS-VOB # n, TS1-VOB # 1 to TS1-VOB # n, TS2-VOB # 1 to TS2-VOB # n as objects to be recorded on the disc. Show. As shown in FIG. 15, according to the types of these objects, there are an information table for PS-VOB, an information table for TS1-VOB, and an information table for TS2-VOB. Has VOB information of each object.

  Each VOB information includes general information of the corresponding object, attribute information of the object, an access map for converting the reproduction time of the object into an address on the disk, and management information of the access map. The general information includes identification information of the corresponding object, the recording time of the object, the manufacturer ID, and the like, and the attribute information includes video stream information (V_ATR) including the coding mode of the video stream, and the number of audio streams ( AST_Ns) and audio stream information (A_ATR) including an audio stream coding mode.

  There are two reasons for requiring an access map. The first is to prevent the playback path information from referring directly to the recording position of the object on the disk by the sector address or the like, and to indirectly refer to the object playback time. In the case of a RAM medium, the object recording position may be changed by editing or the like, but when the reproduction path information directly refers to the object recording position by a sector address or the like, the reproduction path information to be updated This is because there are many. On the other hand, when referring indirectly by the playback time, it is not necessary to update the playback path information, and only the access map needs to be updated.

  The second reason is that an AV stream generally has two criteria, a time axis and a data (bit string) axis, and there is no perfect correlation between the two criteria. For example, in the case of MPEG-2 video, which is an international standard for video streams, it is becoming mainstream to use a variable bit rate (a method in which the bit rate is changed according to the complexity of the image quality). Since there is no proportional relationship between data volume and playback time, random access based on the time axis is not possible. In order to solve this problem, the object information has an access map for converting between the time axis and the data (bit string) axis.

  As shown in FIG. 15, the playback control information includes a user-defined playback path information table, an original playback path information table, and a title search pointer.

  As shown in FIG. 16, the playback path includes original definition playback path information that is automatically generated so that the DVD recorder shows all objects recorded during object recording, and user-defined playback that allows the user to freely define a playback sequence. There are two types of route information. The playback path is collectively called PGC information (Program Chain Information) in the DVD, the user-defined playback path information is called U-PGC information, and the original playback path information is called O-PGC information.

  Each of the O-PGC information and the U-PGC information is information that lists cell information, which is information indicating a cell that is an object reproduction section, in a table format. The object playback section indicated by the O-PGC information is called an original cell (O-CELL), and the object playback section indicated by the U-PGC information is called a user cell (U-CELL).

  The cell indicates the object playback section by the playback start time and playback end time of the object, and the playback start time and playback end time are converted into the recording position information of the object on the actual disk by the access map described above.

  As shown in FIG. 16B, the cell group indicated by the PGC information constitutes a series of reproduction sequences that are sequentially reproduced according to the entry order of the table.

  FIG. 17 is a diagram for specifically explaining the relationship among objects, cells, PGCs, and access maps. As shown in FIG. 17, the original PGC information 50 includes at least one cell information 60, 61, 62, 63. The cell information 60 designates an object to be reproduced, and designates an object type and an object reproduction section. The recording order of the cell information in the PGC information 50 indicates the reproduction order when the object designated by each cell is reproduced.

  One cell information 60 includes type information (Type) 60a indicating the type of object designated by the cell information 60, an object ID (Object ID) 60b which is object identification information, and a start time in the object on the time axis. Information (Start_PTM) 60c, end time information (End_PTM) 60d in the object on the time axis, and Entry Point information (EPI) 60e are included. The EPI is defined by time information and plays a role like a bookmark, for example. Although not shown in the figure, the number of Entry Points in the cell is recorded in the cell information. The EPI is composed of the Entry Point PTM (Presentation Time), Entry Point type information, and the like. Note that the PTM designates the display timing when the 27 MHz system clock counter value defined by the MPEG-2 system stream is used as a reference.

  At the time of data reproduction, the cell information 60 in the PCG information 50 is sequentially read, and the object designated by each cell is reproduced for the reproduction section designated by the cell.

  The access map 80c converts the start time information and end time information indicated by the cell information into position information on the disk of the object.

  The map information described above is generated and recorded together with the recording of the object. In order to generate a map, it is necessary to analyze the picture structure in the object data. Specifically, it is necessary to detect the position of the I picture shown in FIG. 9 and time stamp information such as PTS that is the reproduction time of the I picture shown in FIGS.

  Here, problems that occur when generating map information of PS-VOB, TS1-VOB, and TS2-VOB will be described below. PS-VOB and TS-VOB1 are generated mainly by encoding a received analog broadcast into an MPEG stream as described in FIG. For this reason, the information of the I picture and various time stamps is generated by itself, the data structure inside the stream is clear for the DVD recorder, and no problem occurs in the generation of map information.

  Next, as for TS2-VOB, as described with reference to FIG. 1, the received digital broadcast is recorded directly on the disk without being encoded by the DVD recorder. For this reason, the position and time stamp information of the I picture is not generated by itself as in the case of PS-VOB, so the data structure inside the stream is not clear for the DVD recorder, and this information is detected from the digital stream to be recorded. Is required. Therefore, the DVD recorder detects an I picture and a time stamp as follows for the map information of TS2-VOB recording a stream encoded outside the recorder.

  First, the I picture is detected by detecting the random access display information in the application field of the TS packet shown in FIG. The time stamp is detected by detecting the PTS in the PES header. As for the time stamp, instead of PTS, PCR in the application field or ATS which is the arrival timing at which the TS packet is transmitted to the DVD recorder may be substituted. In any case, the DVD recorder detects the position of the I picture based on the information of the system layer that is the upper layer without analyzing the data structure of the video layer of the MPEG stream. This is because the load on the system is high because the analysis of the video layer is performed to generate map information.

  In addition, the system layer may not be detected, but in this case, map information cannot be generated, so it is necessary to indicate that there is no valid map information. In the DVD recorder, these are indicated by the map management information shown in FIG. As shown in FIG. 15B, the map management information includes map validity information and a self-encoding flag. The self-encoding flag indicates that the object is encoded by the DVD recorder itself, the internal picture structure is clear, and the time stamp information of the map information, the position information of the I picture, and the like are accurate. The map validity information indicates whether there is a valid access map.

  Note that examples in which the system layer cannot be detected include a case where the application field is not set or a digital stream that is not an MPEG transport stream in the first place. Since various types of digital broadcasting can be established in various countries around the world, it is naturally expected that DVD recorders record objects that cannot generate maps. For example, when a DVD recorder that assumes digital broadcasting in Japan is used in the United States and digital broadcasting in the United States is recorded, an object that cannot generate a map may be recorded.

  However, the DVD recorder can also sequentially reproduce objects from which no map information is generated from the beginning. In this case, the recorded digital stream can be reproduced by outputting it to the STB corresponding to the stream via the digital I / F.

(6. Basic operation of playback function)
Next, the reproduction operation of the DVD recorder player that reproduces the optical disk will be described with reference to FIG. As shown in FIG. 18, the player temporarily stores the optical pickup 201 that reads data from the DVD-RAM disk 100, the ECC processing unit 202 that performs error correction of the read data, and the read data after error correction. A track buffer 203, a PS decoder 205 that reproduces a program stream such as a moving image object (PS_VOB), a TS decoder 206 that reproduces a transport stream of a digital broadcast object (TS1_VOB), and an audio object (AOB). An audio decoder 207; a still picture decoder 208 that decodes a still picture object (POB); a switch 210 that switches data input to the decoders 205 and 206; a control unit 211 that controls each part of the player; Provided.

  Data recorded on the DVD-RAM disk 100 is read from the optical pickup 201 and stored in the track buffer 203 through the ECC processing unit 202. The data stored in the track buffer 203 is input to any of the PS decoder 205, TS decoder 206, audio decoder 207, and still picture decoder 208, and is decoded and output.

  At this time, the control unit 211 determines data to be read based on the reproduction sequence indicated by the reproduction path information (PGC) shown in FIG. That is, in the example of FIG. 16, the control unit 211 reproduces the partial section (CELL # 1) of VOB # 1 first, and then reproduces the partial section (CELL # 2) of VOB # 3. And VOB # 2 (CELL # 3).

  Also, the control unit 211 can obtain the type of cell to be played, the corresponding object, the playback start time of the object, and the playback end time based on the cell information of the playback path information (PGC) shown in FIG. The control unit 211 inputs the data of the object section specified by the cell information to a suitable decoder.

  At this time, the control unit 211 specifies the object to be reproduced by the Object ID of the cell information. Further, the control unit 211 identifies a cell, which is a playback section of the identified object, by converting StartPTM and EndPTM of the cell information into an address of the disk information by using an access map of the corresponding VOB information.

  The player according to the present embodiment further has a digital interface 204 for supplying an AV stream to the outside. As a result, it is also possible to supply the AV stream to the outside via communication means such as IEEE 1394 or IEC 958. This is especially true for TS2-VOB that is not encoded by itself, because there may be a case where there is no corresponding decoder inside the player, so that it is output directly to the external STB through the digital interface 204 without decoding. It can be played back by the STB.

  When the digital data is directly output to the outside, the control unit 211 determines whether or not random access reproduction is possible based on the map management information in FIG. If the access point information flag is valid, the access map has I picture position information. Therefore, if there is a request for fast-forward playback from an external device, the control unit 211 can output digital data including an I picture to the external device via the digital I / F. If the time access information flag is valid, time access is possible. Therefore, the control unit 211 can output digital data including picture data corresponding to the designated reproduction time to the external device via the digital I / F in response to a time access request from the external device. .

(7. Basic operation of recording function)
Next, the configuration and operation of the DVD recorder according to the present invention for recording and reproducing with respect to the optical disc will be described with reference to FIG. As shown in FIG. 19, the DVD recorder includes a user I / F unit 222 that accepts display to the user and a request from the user, a system control unit 212 that manages and controls the entire DVD recorder, and an analog that receives VHF and UHF. Broadcast tuner 213, encoder 214 that converts analog signals into digital signals and encodes them into MPEG program streams, digital broadcast tuner 215 that receives digital satellite broadcasts, analysis unit 216 that analyzes MPEG transport streams sent by digital satellites, televisions, and A display unit 217 such as a speaker; and a decoder 218 that decodes the AV stream.

  When the recording device is a DVD camcorder, a camera unit 223 for inputting video and a still image encoder 224 for encoding an AV signal sent from the camera unit 223 into a JPEG stream are provided.

  At this time, the AV signal of the still image may be encoded into an MPEG program stream by the encoder 214 and separately recorded on the DVD-RAM.

  The decoder 218 includes the first and second decoders shown in FIG. The DVD recorder further includes a digital I / F unit 219, a track buffer 220 for temporarily storing write data, and a drive 221 for writing data to the DVD-RAM disk 100. The digital I / F unit 219 is an interface that outputs data to an external device through communication means such as IEEE1394 or USB.

  In the DVD recorder configured as described above, the user I / F unit 222 first receives a request from the user. The user I / F unit 222 transmits a request from the user to the system control unit 212, and the system control unit 212 interprets the request from the user and makes a processing request to each module.

  There are two types of recording: self-encoding that encodes input digital data by itself, and outside encoding that records encoded digital data on a disc without encoding.

(7.1 Recording operation by self-encoding)
First, with respect to self-encoding, an operation for encoding an analog broadcast into PS-VOB and recording it will be specifically described below. The system control unit 212 requests reception to the analog broadcast tuner 213 and encoding to the encoder unit 214. The encoder unit 214 performs video encoding, audio encoding, and system encoding on the AV data sent from the analog broadcast tuner 213 and sends the AV data to the track buffer 220.

  The encoder unit 214 sends the time stamp information included in the head data of the encoded MPEG program stream immediately after the start of encoding to the system control unit 212 as the reproduction start time (PS_VOB_V_S_PTM), and is necessary for subsequently creating an access map. This information is sent to the system control unit 212 in parallel with the encoding process. This value is set in Start_PTM of cell information shown in FIG. The time stamp information is generally PTS, but may be replaced by SCR.

  Next, the system control unit 212 issues a recording request to the drive 221, and the drive 221 extracts the data stored in the track buffer 220 and records it on the DVD-RAM disk 100. At this time, the above-described continuous area (CDA) is searched from the recordable area on the disc, and data is recorded in the searched continuous area. The end of recording is instructed by a stop request from the user. The recording stop request from the user is transmitted to the system control unit 212 through the user I / F unit 222, and the system control unit 212 issues a stop request to the analog broadcast tuner 213 and the encoder unit 214.

  The encoder 214 stops the encoding process in response to an encoding stop request from the system control unit 212, and sets the time stamp information included in the end data of the MPEG program stream that has been encoded as the playback end time (PS_VOB_V_E_PTM) to the system control unit 212. send. This value is set in End_PTM of the cell information shown in FIG. The time stamp information is normally set to PTS, but may be replaced with SCR.

  After the encoding process is completed, the system control unit 212 generates PS-VOB VOB information (PS-VOBI) and playback control information shown in FIG. 15 based on the information received from the encoder 214. Here, the generated VOB information includes an access map suitable for the object type and map management information. The system control unit 212 sets the map validity information of the map management information to be valid, and turns on the self-encoding flag.

  Further, as the playback control information, an original playback path (O-PGC information) shown in FIG. 16 is generated in which the object to be recorded is one of the playback targets. The generated O-PGC information is added to the original reproduction path table. The original reproduction path (O-PGC information) has cell information. “PS-VOB” is set in the type information of the cell information.

  Finally, the system control unit 212 requests the drive 221 to finish recording the data stored in the track buffer 220 and to record PS-VOB VOB information (PS_VOBI) and playback control information. The remaining data in the track buffer 220 and these pieces of information are recorded on the DVD-RAM disk 100, and the recording process is terminated.

  Of course, analog broadcasting may be encoded into TS1-VOB. In this case, the encoder 214 needs to be an encoder that converts an analog signal into a digital signal and encodes it into an MPEG transport stream, and the type information in the cell information is set to “TS1-VOB”. In this case, Start_PTM and End_PTM may be PTS or PCR.

(7.2 Recording operation by outside encoding)
Next, recording by outside encoding will be described in detail below through the operation of recording a digital broadcast. In this case, the type of object to be recorded is TS2-VOB. A digital broadcast recording request by the user is transmitted to the system control unit 212 through the user I / F unit 222. The system control unit 212 requests reception to the digital broadcast tuner 215 and data analysis to the analysis unit 216.

  The MPEG transport stream sent from the digital broadcast tuner 215 is transferred to the track buffer 220 through the analysis unit 216. The analysis unit 216 obtains time stamp information included in the top data of the transport stream as information necessary for generating the VOB information (TS2_VOBI) of the encoded MPEG transport stream (TS2-VOB) first received as a digital broadcast. Is extracted as start time information (TS2_VOB_V_S_PTM) and sent to the system control unit 212. The start time information is set in Start_PTM of cell information shown in FIG. This time stamp information is PCR or PTS. Moreover, you may substitute with ATS which is the timing which an object is transmitted to a DVD recorder.

  The analysis unit 216 further analyzes the system layer of the MPEG transport stream and detects information necessary for creating an access map. As described above, the position of the I picture in the object is detected based on the random access indicator (random_access_indicator) in the application field (adaptation field) in the TS packet header.

  Next, the system control unit 212 outputs a recording request to the drive 221, and the drive 221 extracts the data stored in the track buffer 220 and records it on the DVD-RAM disk 100. At this time, the system control unit 212 instructs the drive 221 where to record on the disk from the allocation information of the file system. At this time, the above-described continuous area (CDA) is searched from the recordable area on the disc, and data is recorded in the searched continuous area.

  The end of recording is instructed by a stop request from the user. The recording stop request from the user is transmitted to the system control unit 212 through the user I / F unit 222, and the system control unit 212 issues a stop request to the digital broadcast tuner 215 and the analysis unit 216.

  The analysis unit 216 stops the analysis process in response to an analysis stop request from the system control unit 212, and performs system control using the time stamp information included in the end section data of the MPEG transport stream analyzed last as the display end time (TS2_VOB_V_E_PTM). To the unit 212. This value is set in End_PTM of the cell information shown in FIG. This time stamp information is PCR or PTS. Moreover, you may substitute with ATS which is the timing which an object is transmitted to a DVD recorder.

  The system control unit 212 generates TS2-VOB VOB information (TS2_VOBI) and playback control information shown in FIG. 15 based on the information received from the analysis unit 216 after completion of the digital broadcast reception process. Here, the generated VOB information includes an access map suitable for the object type and map management information. When the system control unit 212 can detect the position of the I picture in the object and generates an effective access map, the system control unit 212 sets the map validity information of the map management information to be valid.

  The self-encoding flag is set to OFF. If a valid access map cannot be generated, the map validity information is set to invalid. Note that cases where a valid access map cannot be generated include a case where a non-supported digital broadcast is received or a case where there is no random access information in the application field. In addition, when it is directly input from the digital I / F, there may be a case where it is not an MPEG transport stream. In this case, naturally, the map validity information is set invalid.

  Further, as the playback control information, an original playback path (O-PGC information) shown in FIG. 16 is generated in which the object to be recorded is one of the playback targets. The generated O-PGC information is added to the original reproduction path table. The original reproduction path (O-PGC information) has cell information. “TS2-VOB” is set in the type information of the cell information.

  Finally, the system control unit 212 requests the drive 221 to finish recording the data stored in the track buffer 220, and to record TS2-VOB VOB information (TS2_VOBI) and playback control information. The remaining data in the track buffer 220 and these pieces of information are recorded on the DVD-RAM disk 100, and the recording process is terminated.

The operation has been described above based on the recording start and end requests from the user. For example, in the case of timer recording used in the VTR, the system control unit automatically requests the recording start and end instead of the user. The operation of the DVD recorder is not essentially different.
Regarding still image recording, there are self-encoding that encodes an input AV signal by itself, and outside encoding that records encoded digital data (still image file) on a disc without encoding.

(7.3 Still image recording operation by self-encoding)
Regarding still image recording, the operation of recording the AV data sent from the camera unit 223 by JPEG encoding will be specifically described below.

  The system control unit 212 requests AV data output to the camera unit 223 and encoding to the still image encoder unit 224. The still image encoder unit 224 JPEG encodes the AV data sent from the camera unit 223 and sends it to the track buffer 220.

  Next, the system control unit 212 issues a recording request to the drive 221, and the drive 221 extracts the data stored in the track buffer 220 and records it on the DVD-RAM disk 100.

  At this time, the system control unit 212 creates a DCF image root directory and a DCF directory as needed from the information of the file system, assigns names so that the DCF object already recorded and the file name do not overlap, A still image file is recorded on the DVD-RAM disk 100.

  Recording ends when one still image file is recorded. Alternatively, if the user gives an instruction for continuous shooting, the process is terminated by a stop request from the user, or a predetermined number of still image files are recorded and the process is terminated.

  The recording stop request from the user is transmitted to the system control unit 212 through the user I / F unit 222, and the system control unit 212 issues a stop request to the camera unit 223 and the still image encoder unit 224.

(7.4 Still image recording operation by outside encoding)
In addition, regarding the recording of still images, the operation of inputting and recording still image files from the digital I / F unit 219 will be specifically described below.

  The DCF object sent from the digital I / F unit 219 is transferred to the track buffer 220.

  Next, the system control unit 212 outputs a recording request to the drive 221, and the drive 221 extracts the data stored in the track buffer 220 and records it on the DVD-RAM disk 100.

  At this time, the system control unit 212 creates a DCF image root directory and a DCF directory as needed from the information of the file system, assigns names so that the DCF object already recorded and the file name do not overlap, A still image file is recorded on the DVD-RAM disk 100.

  When a DVD recorder is connected to a PC via SCSI, ATAPI, etc., and still images are sent from the PC to the DVD recorder, the file system information on the DVD-RAM 100 is manipulated on the PC side (DCF directory creation and DCF object name Setting).

  Recording ends when one still image file is recorded. If the user instructs continuous recording, the process is terminated by a stop request from the user, or a predetermined number of still image files are recorded and the process is terminated.

  The recording stop request from the user is transmitted to the system control unit 212 through the user I / F unit 222, and the system control unit 212 issues a stop request to the digital I / F unit 219.

  When such a DVD recorder imports a lot of still image data recorded on the memory card via the memory card I / F unit, it is required that the imported still image can be searched and browsed at high speed ( For example, see Patent Document 1.) The following describes a DVD-RAM recording format that enables high-speed retrieval and browsing of still images after import.

  FIG. 62 shows a DVD-RAM disk 301 in which a plurality of still image files (DSC objects) 302, 303, and 304 are stored. The left side toward the paper surface is the inner peripheral side of the DVD-RAM disc 301, and the right side is the outer peripheral side of the DVD-RAM disc 301. In FIG. 62, three still image files 302, 303, and 304 are recorded, but it is assumed that a large number of still image files 302, 303, and 304 are actually recorded.

Each of the still image files 302, 303, and 304 includes a set of attached information and compressed data. The compressed data is, for example, captured JPEG image data. The attached information includes thumbnail image data used when displaying the JPEG image data as thumbnails, date information for searching the still image files 302, 303, and 304, and metadata such as aperture and shutter speed. ing.
(8. Linking motion between video and still image)
A conventional operation of linking a moving image and a still image using the entry point or section marker described in Patent Document 1 will be described.

(8.1 First Example of Linking Operation between Video and Still Image)
Hereinafter, a first example relating to a moving operation of a moving image and a still image described in Patent Document 1 will be described with reference to FIGS. 21 to 26, 53, 54, and the like.

  FIG. 21 is a data structure diagram when the program management information has an extended information area. Note that the O_PGC # 1 information in FIG. 16 corresponds to “program 1 management information” in FIG. 21, and the general information in FIG. 16 is “program 1 general information” under “program 1 management information” in FIG. 16, the O-CELL information #n to the O-CELL information #n in FIG. 16 correspond to the AV data designation information of the program 1 in FIG. The extended information of program 1 in FIG. 21 is a field added in this figure. In this case, the management information of a certain program (program 1) is recorded in the form of general information of program 1, AV data designation information of program 1, and extended information of program 1. As extended information in this case, detailed program information acquired from the EPG (genre, performer, description of contents, etc.), recording settings in the case of self-recording (settings such as recording bitrate), still images (thumbnail images) representing one scene of the program ) Actual data, file name when the thumbnail is an external file, setting as a reproduction prohibited program, setting as a candidate for an automatic deletion program, recording of information indicating that the device automatically recorded content, recording There is information indicating the user who has performed. Further, when one program is deleted, the management information of the program is also deleted at the same time, so the extended information is also deleted.

  FIG. 22 shows a case where the “program AV data designation information” shown in FIG. 21 is divided into “cell management information” and “Entry Point management information” and recorded so as to be collected together. Here, Entry Point management information has an extension information area inside. The O_PGC # 1 information in FIG. 16 is the program management information, the general information in FIG. 16 is the general information under the O_PGC # 1 information, and the O-CELL information #n from the O-CELL # 1 information in FIG. Corresponds to AV data designation information. “Program extended information” in FIG. 22 is a field added in this figure. Further, the management information of each cell in FIG. 22 corresponds to Type, ObjectID, Start_PTM, and Ent_PTM in the original cell information in FIG. Further, the management information of each EntryPoint corresponds to information listing the EntryPoint information in the original cell information of FIG.

  In this case, Entry Point type information indicating the presence or absence of extended information, position specifying information in the program, and extended information are recorded as Entry Point management information.

  As extended information, information indicating a change point of PSI / SI, information indicating a data carousel start point, information indicating an in point to the CM, information indicating an out point from the CM, special event information (another information) Specify jumping to playback position, start external application on PC, URL is embedded, start HTML, etc.), link to related external file (DCF object, JPEG thumbnail, etc.) and playback condition of the external file ( Playback time, etc.).

  The position of the Entry Point management information may be inside the program management information as shown in FIG. 22, or may be grouped in another position in the video management information, or a file other than the video management information. It may be inside. However, in this case, it is assumed that an arbitrary position in the AV stream can be designated as the position specifying information.

  In addition, there is no need for the type information of Entry Point.

  Note that the type of Entry Point may indicate other than the presence / absence of extended information.

  FIG. 23 shows a case where the “program AV data designation information” shown in FIG. 21 is divided into two parts, “cell management information” and “Section Marker management information”, which are recorded together. Here, the section marker management information has an extended information area. Further, the management information of each cell in FIG. 23 corresponds to Type, ObjectID, Start_PTM, and Ent_PTM in the original cell information in FIG.

  Here, as shown in FIG. 23, Section Marker is information that designates an arbitrary section in a program with two points of a start position and an end position, and is recorded in the program management information. is there.

  In this case, Section Marker management information includes Section Marker type information indicating the presence / absence of extended information, Section Marker start position specifying information in the program, Section Marker end position specifying information in the program, and extended information. As extended information, information indicating a CM section, information indicating a data broadcast effective section, information indicating a special effect area, a link to a related external file (DCF object, JPEG thumbnail, etc.) and the external file Playback conditions (such as playback time) can be recorded.

  Note that the position of the management information of the section marker may be inside the program management information as shown in FIG. 22, or may be grouped in another position in the video management information, or a file other than the video management information. It may be inside. However, in this case, an arbitrary section in the AV stream can be designated as the position specifying information.

  Note that there is no need for section marker type information.

  Note that the type of Section Marker may indicate other than the presence or absence of extended information.

  FIG. 24 shows the basic data structure of extended information. The extension information is composed of IT_DATA_Ns representing the number of extension information and IT_DATA_SET representing the set of extension information. IT_DATA_SET is composed of the number of IT_DATA_Headers and IT_DATA_Body specified by IT_DATA_Ns.

  In IT_DATA_Header, Extension ID (including a common Extension ID common to all device manufacturers) and IT_DATA_Body_Size indicating the size of IT_DATA_Body are recorded.

  IT_DATA_Body is composed of a pair of IT_TY_SZ indicating the type and size of DATA and DATA which is the main body of extension information, and information as shown in FIG. 24 is recorded.

  As an example, program title, performer, producer, broadcast station, genre, recording date, recording source, other additional information, program content information, external file name, URL (the above is common in common Extension ID and unique Extension ID), There is extension information unique to the device manufacturer (when a unique extension ID is used). These types are specified by IT_TY, and the size of each DATA is specified by IT_SZ.

  Note that the broadcasting station, genre, recording date and time, recording source, and the like given in the previous example may be constant regardless of IT_SZ.

  FIG. 25 is a data structure diagram when the link information to the external extension information is recorded in the extension information (FIG. 25A). In FIG. 25B, the external extended information link information includes an external extended information file name that specifies the file name of the external extended information file, an extended information start address that indicates an offset address in the file, and an extended information end address. Is done.

  FIG. 26 is another data structure diagram when the link information to the external extension information is recorded in the extension information. In FIG. 26A, the external extended information link information includes an external extended information file name that specifies the file name of the external extended information file, an extended information start address that indicates an offset address in the file, and the size of the extended information. The extended information size to be represented is recorded. In FIG. 26B, the external extended information link information includes an external extended information file name that specifies the file name of the external extended information file and an extended information index number that represents the index number of the extended information from the top of the file. Is recorded. In this case, the size of one extension information may be fixed, a search pointer corresponding to each index number may be provided at the head of the external extension information file, or external extension information. The size of the external extension information corresponding to the index number may be calculated by recording its own size at the head of each external extension information in the file.

  Here, the external extension information can be designated in any of the forms shown in FIGS. 25B, 26A, and 26B, and any form may be adopted.

  FIG. 53 is a configuration example of the external extension information file described with reference to FIGS. This external extension information file stores APP1 (application data segment 1) included in the recorded DCF basic file. APP1 is recorded from the beginning of the logical sector, and when the APP1 end and the logical sector end do not match, padding data is recorded between them. Any value can be used as padding data. This APP1 includes metadata such as shooting time and aperture value. A thumbnail image of 160 pixels × 120 pixels is always included. APP1 is also called Exif attached information.

  The external extended information file shown in FIG. 53 is shown in FIG. 22 shown in the first example relating to the linkage operation between the moving image and the still image, or the sixth example relating to the third, fourth or later linkage operation between the movie and the still image. Referenced by Entry Point or Section Marker in FIG. That is, the extension information in the Entry Point or the extension information in the Section Marker includes the external extension information link information shown in FIG. 25 or 26, and the external extension information link information is the external extension information file name as shown in FIG. Contains the file name of the extended information file. When the external extension information link information holds the extension information start address, the offset address up to the top of APP1 in the file is held. When the external extension information link information holds the extension information index number, the APP1 identification number in the file is held.

  FIG. 54 shows the data at the head of the DCF basic file. The head of the DCF basic file starts in the order of SOI (Start Of Image) and APP1. The SOI is composed only of an SOI marker (0xFFD8). The inside of APP1 is recorded in the order of APP1 marker (0xFFE1), APP1 data size (excluding the data size of APP1 marker), and contents of APP1. The maximum value of the data length field of APP1 is 65535.

  FIG. 56 shows the detailed data structure of the DCF basic file 321. The DCF basic file 321 includes an SOI 322, APP1 (323), a DCF basic main image (324) compressed with JPEG, and an EOI (End Of Image) 325.

  The APP1 (323) mainly includes auxiliary information 326 related to the DCF basic main image and thumbnail data 327 of the DCF basic main image 324. Attached information 326 regarding the DCF basic main image is 0thIFD, ExifIFD, Int. It consists of IFD (interoperability IFD) and 1st IFD. The thumbnail data 327 includes SOI, JPEG-compressed thumbnail images, and EOI. The 0th IFD includes image resolution and the like. Exif IFD includes an aperture value, shutter speed value, manufacturer note, comment, and the like. The manufacturer note is a field that can be set independently by the manufacturer.

  Each IFD is composed of a common data structure called a tag. The DCF basic file 321 is a subset obtained by adding a limitation to the Exif image file.

  FIG. 57 shows the detailed data structure of the TIFF file 331 compliant with the Exif standard. The TIFF file 331 includes a TIFF header 332, Exif standard-compliant auxiliary information 333, thumbnail images (uncompressed) 334, and image data (uncompressed) 335. Exif-compliant attached information 333 includes 0th IFD, Exif IFD, Int. It consists of IFD and 1st IFD. In the DCF standard, the TIFF file 331 is handled as a DCF extended image file. Furthermore, when a DCF extended image file is recorded, recording of a DCF thumbnail file 336 is recommended. The DCF thumbnail file 336 includes SOI 337, APP1 (however, recording option) 338, JPEG-compressed thumbnail image 339, and EOI 340. APP1 (338) mainly includes 0th IFD, Exif IFD, Int. IFD and 1st IFD are included.

  FIG. 58 shows the physical data arrangement on the DVD-RAM disk 315. The external extension information file is recorded in the inner area 309, and the DCF basic file 321 or the DCF extended image file 331 is recorded in the outer area 310. It is assumed that the inner peripheral area 309 is reserved in advance as a recording area for the recording device to record the external extended information file.

  In other words, the outer peripheral area 310 is a user area for recording data used by the user, such as the DCF basic file 321, the DCF extended image file 331, and other moving image data. The inner area 309 is a management area for recording management information for managing data recorded in the outer area 310.

  FIG. 59 shows a DVD-RAM disk 315 on which a DCF basic file 321 is recorded. In FIG. 59A, the left side toward the paper surface is the inner peripheral side of the DVD-RAM disk 315, and the right side is the outer peripheral side of the DVD-RAM disk 315. In each DCF basic file 321, the attached information portion is recorded in the inner peripheral area 309, and the DCF basic file 321 composed of the attached information and compressed data is an outer peripheral area of the DVD-RAM disc 315. 310. That is, the DCF basic file 321 is recorded in the area 310 on the outer periphery side of the DVD-RAM disk 315 and a copy of the attached information is recorded in the area 309 on the inner periphery side of the DVD-RAM disk 315. Note that the compressed data in FIG. 59A is the DCF basic main image 324 and EOI (325) in FIG. In FIG. 59A, the attached information is APP1 (323) and SOI (322) in FIG.

  As described above, the auxiliary information constituting the DCF basic file 321 is collectively recorded in the area 309 on the inner periphery side of the DVD-RAM disk 315, and the area 310 on the outer periphery side of the DVD-RAM disk 315 is recorded in the area 310 on the outer periphery side. Attached information and compressed data constituting the DCF basic file 321 are recorded. For example, with respect to the DCF basic file 321 composed of the attached information (311b) and the compressed data 311c, the attached information (311b) and the compressed data 311c are recorded in the area 310 on the outer peripheral side of the DVD-RAM disk 315. The attached information (311a), which is a copy of the attached information (311b), is recorded in the area 309 on the inner peripheral side of the DVD-RAM disc 315.

  In order to perform thumbnail display on the DVD-RAM disk 315, for example, the auxiliary information (311a), the auxiliary information (312a), and the auxiliary information (313a) stored in the area 309 on the inner periphery side of the DVD-RAM disk 315 are used. It is only necessary to read in order from the inner circumference side to the outer circumference side of the disk. Therefore, a long-time seek operation unlike the conventional DVD-RAM disk 301 of FIG. 62 does not occur. As described above, according to the first example relating to the linkage operation between the moving image and the still image, even if a large number of DCF basic files 321 are recorded on the DVD-RAM disk 315, thumbnail display can be performed at high speed. Become. Further, when searching for the DCF basic file 321 using date information stored in the attached information portion, as in the case of the thumbnail display as shown by the arrow in FIG. Each attached information can be accessed with few seek operations, so that it can be searched at high speed.

  FIG. 59B shows the operation when displaying a still image of the DCF basic file 321. When displaying a still image of the DCF basic file 321, it is necessary to access both the attached information and the compressed data constituting the DCF basic file 321. In such a case, for example, the attached information (311b) and the compressed data 311c recorded in the area 310 on the outer periphery side of the DVD-RAM disk 315 are accessed. That is, the attached information stored in the area 309 on the inner periphery side of the DVD-RAM disk 315 is not accessed. Therefore, it is not necessary to alternately access the area 309 on the inner circumference side and the area 310 on the outer circumference side of the disk, and a seek operation hardly occurs as shown by the arrow in FIG. That is, the still image data of the DCF basic file 321 can be displayed at high speed.

  In the above description, the case where the DCF basic file is recorded on the DVD-RAM disk 315 has been described. However, the present invention is not limited to this, and the same applies to the case where the TIFF file 331 is recorded on the DVD-RAM disk 315. However, when the TIFF file 331 is recorded on the DVD-RAM disk 315, the Exif standard-compliant auxiliary information 333 and the DCF thumbnail file 336 are recorded in the inner peripheral area 309 of the DVD-RAM disk 315, and the DVD-RAM disk 315 is recorded. -It is assumed that a TIFF file 331 and a DCF thumbnail file 336 are recorded in the area 310 on the outer peripheral side of the RAM disk 315.

  In the example relating to the link operation between the moving image and the still image, it has been described that all copies of the attached information are recorded in the area 309 on the inner peripheral side of the DVD-RAM disk 315. However, the present invention is not limited to this. A partial copy of the attached information may be recorded in the area 3099 on the inner periphery side of the DVD-RAM disk 315. Specifically, when all copies of the attached information are recorded in the area 309 on the inner peripheral side of the DVD-RAM 315, all of APP1 (323) and SOI (322) in FIG. Is recorded, for example, the entire APP1 (323) or excerpt information is recorded without recording the SOI (322) of FIG. When the excerpt information of APP1 (323) is recorded, for example, information excluding the APP1 marker in FIG. 54 or information excluding the APP1 data length is recorded.

  That is, the area 309 on the inner peripheral side of the DVD-RAM disk 315 may be recorded in units of SOI and APP1 in FIG. 54, or may be recorded in units of APP1, and the first two bytes from APP1. The portion excluding (APP1 marker) may be recorded as a unit, or the portion excluding the first 4 bytes (APP1 marker and APP1 data length) from APP1 may be recorded as a unit. However, if the first 4 bytes are removed, the data size may be recorded separately.

  In short, it is only necessary to record at least a copy of the thumbnail image or a copy of the search information for searching the image information in the area 309 on the inner periphery side of the DVD-RAM disc 315.

  Note that the DCF main image 324 in the example related to the link operation between the moving image and the still image is an example of conventional image information, and the area 309 on the inner peripheral side in the example related to the link operation between the moving image and the still image is the second conventional image information. This is an example of the area, and the area 310 on the outer peripheral side in the example relating to the linked operation of the moving image and the still picture is an example of the first conventional area.

  When shooting a still image with a recorder (for example, a DVD camcorder) and recording a DCF basic file, a first example relating to the linkage operation between a moving image and a still image, a third, fourth, or moving image and still image to be described later As shown in the sixth example relating to the linkage operation, the entry point or the section marker is simultaneously recorded, thereby holding information relating to the recording order of the still images.

  Then, when displaying the recorded still images as an index (for example, displaying thumbnails of nine recorded still images on one screen), the thumbnail file is read in advance and placed on the memory. Index display is performed at high speed using thumbnail data in memory. Since the amount of thumbnail data is about 8 kbytes per frame, a large number of thumbnails can be placed in the memory. Even if the total number of still images is large and the thumbnail data cannot all be stored in the memory, if the attached information is arranged in the order of recording, the display processing is performed while sequentially reading the external extended information file in the order of recording. In this case, the thumbnail data on the outer periphery side can be displayed at a higher speed than when reading the thumbnail data.

  With the above configuration, when recording a still image generated by self-encoding in the recorder, the external extension information of the first example relating to the link operation between the moving image and the still image is directly used as APP1 created when recording the DCF basic file. Since it can be recorded in a file, an external extended information file can be easily created.

  On the other hand, when a DCF basic file is received from a digital still camera connected to a recorder (for example, DVD camcorder Fig. 60) via a digital interface and recorded on a DVD-RAM disc on the DVD camcorder side, Entry is similarly applied. By recording Point or Section Marker, the recorded order can be maintained.

  In addition, when the recording device (for example, the DVD camcorder 350 in FIG. 60) has the memory card interface 354, the DCF basic file recorded on the memory card can be stored in the DVD-RAM disk 315 via the memory card interface 354. become. In this case as well, the recording order can be maintained by recording Entry Point or Section Marker.

  At this time, the external extended information file generation unit 352 of the recorder (DVD camcorder 350) reads the first 6 bytes of the received and recorded DCF basic file and detects the data size of APP1 recorded in the last 2 bytes. The data portion is further read, and the entire portion of APP1 read as a result is copied into the external extension information file. Then, the external extension information link information is recorded in the extension information of Entry Point or SectionMarker.

  With the above configuration, even when the outside encoded DCF basic file is captured and recorded, the thumbnail data can be easily additionally recorded in the external extended information file.

  Further, it is possible to display the index display of the image at high speed using the thumbnail image recorded in the APP 1.

  Further, when searching for metadata such as recording time and aperture value recorded in the APP 1, the search can be performed at high speed using the external extended information file. In particular, in the case of an optical disk such as a DVD-RAM, since the seek does not occur, the effect of using the external extension information file is great.

  Further, since the entire DCF basic file is recorded on the outer peripheral side of the DVD-RAM disk 315 separately from the external extension information file, the DVD-RAM disk 315 is inserted into the DVD-RAM drive of the DVD camcorder 350 as shown in FIG. Even when accessing from the personal computer 361, one still image can be accessed and reproduced at high speed.

  Note that in the first example regarding the link operation between the moving image and the still image, both the metadata and the thumbnail data are stored in one external extended information file, but either one may be used.

  In the first example regarding the linkage operation between the moving image and the still image, APP1 included in the DCF basic file recorded outside is stored as it is in the external extended information file. However, the data size of APP1 is large. If too much, it may be stored after extracting a part. However, even in this case, it is assumed that the data structure inside the APP 1 conforms to the DCF standard. For example, when the manufacturer note field (maker note tag) in the ExifIFD of APP1 is larger than a predetermined data size, processing such as omitting this field can be considered.

  In the first example relating to the linkage operation between the moving image and the still image, APP1 is directly copied and stored in the external extended information file. However, the thumbnail data and metadata in APP1 are separated and separated into separate external extended information files. May be created and referenced from the Entry Point or Section Marker. In this case, however, it is necessary to analyze the data structure in the APP 1 in more detail. In particular, in order to extract thumbnail data from inside APP1 and generate compact metadata, metadata numeric expression types (BYTE, ASCII, SHORT, LONG, RATIONAL, UNDEFINED, SLOG, SRATIONAL are available) and pointer information It is necessary to consider recalculation of the process, and the processing becomes complicated.

  In addition, the thumbnail data and the metadata may be separated, but not a separate external extension information file but a single file.

  In the first example regarding the linkage operation between the moving image and the still image, only the DCF basic file has been described. However, thumbnail data regarding other still image files (for example, JPEG2000 file, bitmap file, photo CD file) and Metadata may be stored in the extended image file.

  In the first example regarding the link operation between the moving image and the still image, only the DCF basic file has been described, but a DCF extended image file may be included. The DCF thumbnail file recorded at the same time as the DCF extended image file may be stored in the external extended information file as thumbnail data as it is. However, in this case, the DCF thumbnail file does not necessarily include metadata (attached information according to the Exif standard) according to the DCF standard. Therefore, in order to make it equivalent to APP1 in the case of a DCF basic file, it is necessary to add metadata. For example, if the DCF extended image file is a TIFF file conforming to the Exif standard, metadata conforming to the Exif standard is stored in the TIFF file, so a copy of this data may be added.

  In the first example regarding the link operation between the moving image and the still image, only the DCF basic file has been described. However, a TIFF file based on the Exif standard may be included. In this case, attached information defined in the Exif standard is included in the TIFF file. A copy of the attached information may be stored in the external extended information file. In this case, however, the thumbnail data is not necessarily included in the TIFF file according to the Exif standard. The thumbnail data included in the TIFF file is determined to be uncompressed according to the Exif standard. Therefore, regarding thumbnail data, it is desirable to store thumbnail data subjected to JPEG compression or the like in the external extension information file.

  In the first example relating to the link operation between the moving image and the still image, the thumbnail data of the moving image and the thumbnail data of the still image file may be mixed to form one external extended information file.

  In the first example relating to the link operation between the moving image and the still image, the moving image metadata and the still image file metadata may be mixed to form one external extended information file.

  In the first example relating to the linkage operation between the moving image and the still image, the APP1 is stored in the external extension information file referred to by the Entry Point or Section Marker. However, the file referred to by the Entry Point or the Section Marker is not necessarily used. However, it may be referred to from other data.

In the first example regarding the link operation between the moving image and the still image, APP1 is stored in the external extension information file. However, it is not necessary to include the APP1 marker and the APP1 data length.
(8.2 Second Example of Linking Operation between Video and Still Image)
Next, a second example relating to a moving operation of a moving image and a still image will be described.

  In the example relating to the link operation between the moving image and the still image, FIGS. 21 to 26 described in the first example regarding the link operation between the movie and the still image are the same as the first example regarding the link operation between the movie and the still image. Suppose there is.

  FIG. 27 is a data structure diagram of an extension information ID (Extension ID). In FIG. 27A, the extension information ID has a character string representing external extension, and the data up to the character string end code is valid data. In FIG. 27B, the extension information ID designates a character string representing the external extension, and a separate conversion table for the designated ID and the character string representing the external extension is provided. Extended information can be expressed by referring to the conversion table.

  Here, it is possible to specify external extension in any of the forms shown in FIGS. 27A and 27B, and either form may be taken.

  28 and 29 are data structure diagrams regarding the description of the extended information set (IT_DATA_SET). FIG. 25 shows details of the structure described in FIG. 24 and examples in another form. Any of the data structures described in FIG. 28A, FIG. 28B, FIG. 29A, and FIG. 29B may be used.

  FIG. 30 shows the extension information sub_ID and the extension information copyright information in the extension information. The extension information sub_ID shows the type identification information of the extension information as shown in FIG. Further, the extended information copyright information in FIG. 30A records information used for copyright protection as shown in FIG. 30B.

  FIG. 31 is a data structure diagram in the case where the extended information area of the program management information has a pointer to a thumbnail. In this case, “FILE NAME” representing an external file name is selected as IT_TY of the extended information, and “MEI / s0001.JPG”, which is a still image file name of one scene of program 1, for example, is recorded as DATA. Here, as a file structure, a directory for each device manufacturer may be created in the VIDEO_RT directory (FIG. 31). As a result, it is possible to eliminate the inconvenience due to duplication of file names among device manufacturers.

FIG. 32 is a data structure diagram when a pointer to thumbnail data is provided in the Entry Point extension information area. Each Entry as shown in FIG.
A program selection menu screen as shown in FIG. 32 can be created by providing, as extended information, an external file name obtained by converting an image at Point into a still image. Here, as a file structure, a directory for each device manufacturer may be created in the VIDEO_RT directory (FIG. 32). As a result, it is possible to eliminate the inconvenience due to duplication of file names among device manufacturers.

  FIG. 33 is a data structure diagram when it is recorded in the management information of the Section Marker that it is a still image display section (Section Marker that designates a still image display section is hereinafter described as “Still Section Marker”). On the other hand, FIG. 34 is a diagram showing a display state when the program of FIG. 33 is reproduced.

  As shown in FIG. 33, a Still Section Marker is provided in the program management information, and the name of the still image file to be reproduced, the reproduction time of the still image file, and the like as the extended information necessary for still image display there Even when no still image data is included in the MPEG stream, high-definition still images are recorded from the start time specified on the device side or the like to the specified playback time as shown in FIG. It becomes possible to display the image.

  In addition, the recording device automatically records the Still Section Marker when recording a still image, so that it is possible to save the order information taken by the user. At the time of playback, only the moving image and the still image are played back. It is also possible to reproduce the recorded order.

  Here, the file name of the still image is recorded in the extended information of the Still Section Marker. However, the name of the directory in which the still image file is stored, for example, the name of the DCF directory may be used. In this case, the still image files under the specified directory are played back in order. In this case, the still picture file playback time may be stored in the extended information of the Still Section Marker, such as the playback time information of each still picture file or the total playback time information of all files under the directory.

  Still section marker extension information may include reference information to an external extension information file that stores a name list of still image files. That is, a list of still image file names and directory names to be displayed may be stored in the external extension information of the external extension information file shown in FIGS. In this case, the external extended information file may also be stored as information regarding the reproduction time of the still image file.

  The information stored in the extended information of the Still Section Marker is the same in the following examples relating to the link operation between a moving image and a still image.

  FIG. 35 is a diagram for explaining another notation example of Still Section Marker.

  In FIG. 35 (a), in order to specify the display position of the Still Section Marker, the start position specifying information in the SM program and the end position specifying information in the SM program are recorded, and FIG. 35 (b) This shows how the program is displayed.

  For the description for specifying the display position of the Still Section Marker, either of the methods shown in FIGS. 33 and 35 may be used.

  A method of adding the Still Section Marker of FIG. 33 will be described with reference to the flowchart of FIG.

  In FIG. 36, first, a loop 1 from step 501 to step 505 is performed from the start of the recording operation to the end of recording. In loop 1, a recording object is generated by the recording device (step 502), and the recording object is recorded (step 503). Subsequently, object information and time map information for the object generated in step 502 are generated (step 504). After loop 1 is completed, the object information and time map information generated in step 504 are recorded (step 506), and then reproduction path information is generated and recorded (step 507). Finally, Section Marker information is generated and recorded in the recorded area (step 508), and the recording operation is terminated.

  If a still image is recorded in response to a user instruction or the like during the loop 1 operation from step 501 to step 505, a still section marker is generated and recorded in step 508. The Still Section Marker is generated so that the program is reproduced in the order in which the moving image and the still image are recorded.

  If the user or the system intends, they may be generated with a different order to be reproduced at a later playback time.

  It should be noted that Section Marker information may be generated and recorded at an arbitrary timing even during a recording operation.

  Note that it is not necessary to record the section marker information during the recording operation.

  A method for reproducing a program to which the Still Section Marker of FIG. 33 is added will be described with reference to the flowchart of FIG. In FIG. 37, reproduction path information recorded on the disc is read (step 601). Next, based on the reproduction path information read in step 601, the data to be reproduced is selected (step 602), the time map information of the target data determined in step 602 is read (step 603), and the section marker information. Is read (step 604). It is assumed that loop 1 from step 605 to step 609 is executed while data to be reproduced exists from here. In loop 1, an object to be reproduced is first read (step 606). Next, it is determined whether or not the object to be reproduced is an area designated by the Section Marker information (step 607). If so, it is determined whether or not the reproduction device has a corresponding Section Marker ID. (Step 610). If the playback device has a corresponding Section Marker ID, it is further determined whether or not the Section Marker is a Still Section Marker (step 611). If it is a Still Section Marker, the corresponding still image is read and reproduced (step 612). If it is not a Still Section Marker, the extended information is executed (Step 613) and played back (Step 608). If the playback device is not the corresponding Section Marker ID in step 610, playback is simply performed (step 608). When the reproduction of all data to be reproduced is completed, the loop 1 is terminated and the reproduction operation is terminated.

  FIG. 38 is an explanatory diagram of a method of recording a still image only program using the Still Section Marker.

  In this example, a main program that does not include substantial reproduced video data is provided in the program, and a program with only a still image is configured by setting the reproduction time of the main program to zero.

  A program with only still images may be configured by providing an Entry Point or Section Marker that skips reproduction of the main part to avoid reproduction of the main part.

  By using the above method, it is possible to configure a program with only still images even when the main program setting is essential for the program configuration.

  FIG. 39 is an explanatory diagram of a method for recording a user-defined program for a program to which the Still Section Marker of FIG. 33 is added.

As shown in this example, the user-defined program is played from the middle of the display time of the still image in the program by taking out information from the Still Section Marker of Program 1 and setting a new Still Section Marker. It is also possible to adopt a configuration in which playback is started or playback is ended halfway.
(8.3 Third Example of Linking Operation between Video and Still Image)
Hereinafter, a third example relating to a conventional moving image / still image linking operation will be described with reference to FIGS. 39 to 44.

  In the second example related to the linkage operation between a moving image and a still image, if a still image display section is designated by the Still Section Marker, as shown in FIG. 40, a still image compatible player and a still image non-compatible player are used. , There may be a difference in program display time. In the example related to the linkage operation of moving images and still images described below, the same display time is obtained even on a playback device that does not support still images.

  FIG. 41 is an explanatory diagram of a method of recording a still section marker at the time of recording a still image and recording MPEG-encoded data of the same image as the still image in the main part corresponding to the still image display period.

  FIG. 42 is a diagram for explaining a display when a program to which the Still Section Marker of FIG. 41 is added is processed according to the flowchart of FIG.

  Fig.42 (a) is a display when a program to which Still Section Marker is added is reproduced by a player that supports still image display, and Fig.42 (b) is a program to which Still Section Marker is added. Is displayed when played back on a player that does not support still image display.

  In FIG. 42A, the still image file specified by the Still Section Marker is displayed for the specified period of the Still Section Marker, whereas in FIG. 42B, the Still Section Marker is ignored by the player. , The playback object is coded as it is. As a result, an MPEG-encoded still image is displayed.

  In this way, the still image display section is specified by the Still Section Marker, and the MPEG-encoded data of the same image as the still image is recorded in the main volume, so that a still image compatible playback device and a still image non-compatible playback device are recorded. Thus, the display time of the program can be made the same, and even if the reproduction environment is different, the user is not confused.

  FIG. 43 is an explanatory diagram of a case where a still image only program is recorded using a Still Section Marker. In this example as well, as in the case of FIG. 41, a Still Section Marker is provided at the time of recording a still image, and the still image is recorded by a method of recording MPEG encoded data of the same image as the still image in the main part corresponding to the still image display period. It consists of a picture-only program.

  By using the above method, it is possible to make the display time of the program the same between the player that supports still images and the player that does not support still images, and the main program must be set in the program structure. Even in some cases, it is possible to configure a program with only still images without preparing special dummy data.

  In addition, even a playback device that does not support still images can play back only a still image program except that the playback image quality is inferior, so that even if the playback environment is different, there is no confusion for the user.

  When the same image as the still image is MPEG-encoded in the main part, it may be encoded at a higher resolution than the other main part. For example, when the main part is standard definition (SD), the still picture section may be encoded with high definition (HD). Encoding in HD makes it possible to display higher definition video on a player that does not support still images.

  FIG. 44 is an explanatory diagram of a method for recording a user-defined program for a program to which the Still Section Marker of FIG. 41 is added.

  As shown in this example, by referring to the main part of the program 1 and taking out information from the Still Section Marker of the program 1 and setting a new Still Section Marker, the user-defined program can be changed in the program. It is also possible to adopt a configuration in which playback is started in the middle of the still image display time or playback is ended in the middle.

By adopting the above method, it is possible for the user-defined program 1 to have the same program display time for a still picture-compatible player and a still picture-incompatible player.
(8.4 Fourth Example of Linking Operation between Video and Still Image)
Hereinafter, a fourth example relating to a conventional moving image / still image linking operation will be described with reference to FIGS. 45 to 48.

  FIG. 45 is an explanatory diagram of a method of providing a Still Section Marker during recording of a still image and recording information for referring to special data in program management information for a section corresponding to a still image display period. In FIG. 45, it is assumed that the special data is data having a reproduction time sufficiently longer than the duration time specified by the Still Section Marker. The special data referred to by the program management information may all be the same data, or may refer to different data. By sharing the same data, the amount of data recorded on the disk can be reduced.

  The special data may be stored in a file different from the file in which the program data is stored.

  FIG. 46 is a view for explaining a display when the program to which the Still Section Marker of FIG. 45 is added is processed according to the flowchart of FIG.

  Fig. 46 (a) shows the display when the program with the Still Section Marker added is played back on a player that supports still image display. Fig. 46 (b) shows the program with the Still Section Marker added. Is displayed when played back on a player that does not support still image display. In FIG. 46A, the still image file specified by the Still Section Marker is displayed for the specified period of the Still Section Marker, whereas in FIG. 46B, the still image display specified by the Still Section Marker is displayed. During the period, the decrypted content of special data is displayed.

  In this way, by specifying the still image display section with the Still Section Marker and recording the special data, it is possible to make the program display time the same between the still image compatible player and the still image non-compatible player. Is possible.

  Here, the special data may be an error message indicating that still image data is associated with this section, or data obtained by MPEG encoding the blue background.

  FIG. 47 is an explanatory diagram of a case where a still image only program is recorded using a Still Section Marker. In this example as well, as in the case of FIG. 45, a Still Section Marker is provided at the time of recording a still image, and a program containing only a still image is configured by recording special data in the main part corresponding to the still image display period. Yes.

  By using the above-described method, it is possible to make the program display time the same between a still picture compatible player and a still picture non-compliant player.

  FIG. 48 is an explanatory diagram of a method for recording a user-defined program for the program to which the Still Section Marker of FIG. 45 is added. As shown in this example, by referring to the main part of the program 1 and taking out information from the Still Section Marker of the program 1 and setting a new Still Section Marker, the user-defined program is It is also possible to adopt a configuration in which playback is started in the middle of the still image display time or playback is ended in the middle.

By adopting the above method, it is possible for the user-defined program 1 to have the same program display time for a still picture-compatible player and a still picture-incompatible player.
(8.5 Example of Linking Operation between Video and Still Image)
Hereinafter, a fifth example relating to a conventional moving image / still image linking operation will be described with reference to FIGS. 49 to 50.

  FIG. 49 is an explanatory diagram of a Still Section Marker in which overlay attribute information is described in the extended information in addition to the still image file name.

  In this case, the overlay attribute information in FIG. 49 includes the presence / absence of an overlay instruction, an overlay instruction, and the like. Then, an overlay-compatible player can display a still image external file while performing the instructed overlay method in a still image display section in which Still Section Marker is set.

  FIG. 50 is a diagram for explaining the display during data reproduction of FIG. FIG. 50 (a) shows a display when data with a section marker having overlay attribute information as shown in FIG. 49 is reproduced on an overlay compatible device, and FIG. 50 (b) shows a section marker added in FIG. This is a display when data is reproduced when there is no data. In FIG. 50 (a), a still image is displayed in the portion where the main part 2 is displayed in FIG. 50 (b) while performing the overlay instruction content in the overlay attribute information.

  The contents of the overlay instruction at this time include specification of whether or not to play the main audio, specification of still image arrangement information (centering, top alignment, etc.), scaling information of the still image (reduction to 80%, etc.) Designation, whether to display the main video in the remaining area when the still image is reduced or centered, designation of transition effects, and the like.

  In this example, Section Marker is set for the main part. However, a period corresponding to the main part 1 ′ / 2 ′ in FIGS. 41 and 45 (a period in which a still image is recorded by MPEG encoding, special data, etc.) Recording period).

In this case, information indicating the type of period (still image, special data, etc.) corresponding to the main part 1 ′ / 2 ′ in FIGS. 41 and 45 may be added.
(8.6 Sixth Example for Linking Motion and Still Image)
Hereinafter, a sixth example relating to a conventional moving image / still image linking operation will be described with reference to FIGS. 51 and 52.

  FIG. 51 is another structure diagram of the section marker. Unlike FIG. 23, the pointer has a pointer to thumbnail data corresponding to the section marker as a common data structure.

  In this case, the pointer information to the thumbnail data in FIG. 51 is given the name of the external file that is a still image, as described with reference to FIGS. In a still image display section in which Still Section Marker is set on a playback device that does not support still images, it is possible to display a still image external file referred to as thumbnail data instead of a still image file.

  At this time, if the data format of the still image external file is the same data structure as the other program information and Entry Point thumbnail data shown in FIGS. 31 and 32, a system for recording and reproducing thumbnails can be shared. An efficient system can be configured.

  The pointer information to the thumbnail data may be the external extended information file described with reference to FIGS. 25 and 26. In this case, each thumbnail data is stored as each external extended information in the external extended information file.

  Similarly to Section Marker, a pointer to thumbnail data corresponding to Entry Point may be provided as a common data structure. The data structure at this time is shown in FIG. As a result, when the still picture playback section is managed using Entry Point, it is possible to display thumbnail data instead of still picture files in the still picture display section on a still picture non-supporting player. Become.

  Note that the format of the extended information in the example relating to the link operation between the moving image and the still image is not limited to that described with reference to FIGS. 24, 28, 29, and the like, but the type information of Entry Point and Section Marker Corresponding to the above, it may have a predetermined data structure.

  Note that, in the examples related to the moving image and still image linking operation so far, the example in which the still image playback section is shown using the section marker has been described. However, the same still picture playback section using the entry point described in FIG. You may make it manage.

  An example relating to the link operation between the moving image and the still image in this case will be described with reference to FIG. As shown in FIG. 55, the Entry Point type information indicates that the Entry Point corresponds to the still image management section, the position specifying information in the program indicates the start position of the still image reproduction section, and the extended information includes Reference information to a still image file and the playback time of the still image file are stored.

  To record the MPEG-encoded data of the same image as the still image in the main part corresponding to the still image display period, or to refer to the special data in the program management information, as in the example related to the linkage operation between the moving image and the still image already described. Information may be recorded, or nothing in particular may be recorded.

  In the examples related to the link operation between the moving image and the still image up to this point, only an example in which one Section Maker is arranged at the same position in the program is shown. However, as extension information, a plurality of Section Markers are set at the same position in the program. It is also possible to describe the processing conditions when As an example of this case, if two Section Markers of SM1 and SM2 are set at the same position in the program, it is described that if SM1 is instructed to the extension information of SM1, other Section Markers are not referred to. is there.

  In the above description, all Section Markers are ignored. However, it is also possible to adopt a configuration in which the ID of the Section Marker to be executed and the ID of the Section Marker to be ignored are described separately.

  In the examples related to the linked operation of moving images and still images, DVD-RAM has been described as an information recording medium. However, instead of DVD-RAM, other optical disks, hard disk drives, other magnetic recording media, A semiconductor memory or the like may be used.

  According to the example relating to the link operation between the moving image and the still image, a program in which the moving image and the still image are mixed can be realized.

  According to the example related to the link operation between the moving image and the still image, it is possible to realize a program including only the still image.

  According to the example related to the linkage operation between the moving image and the still image, even when the program is played back on a device that does not support the still image (Still Section Marker), the same still image is played back except that the playback image quality is inferior. Can be realized.

  According to the example relating to the linked operation of the moving image and the still image, the playback time for the program can be made the same regardless of whether the playback device supports or does not support the still image. In addition, if MPEG-encoded data of an error message indicating that still image data is associated with this section is recorded, it may be necessary for a user who has played a program on a playback device that does not support still images. In addition, it is possible to notify that the section is a section in which a still image is to be reproduced.

According to the example relating to the link operation between the moving image and the still image, it is possible to overlay the still image on the main part of the program.
JP 2004-5934 JP

  A recording / reproducing apparatus that records AV data on a DVD-RAM disk is divided into two types: a device that supports recording / reproduction of only moving images, and a device that records both moving images and still images.

  In an apparatus that records and reproduces both moving images and still images, it is desirable that smooth moving image data and still image data can be linked. For example, the recording order of moving image data and still image data recorded in different data formats can be saved and reproduced at the time of reproduction, or video in a format suitable for moving images such as MPEG can be reproduced in the moving image section. On the other hand, in the still image playback section, high-definition JPEG data is displayed.

  In addition, an apparatus that records and reproduces both moving images and still images is desired to have a function of creating a playlist by combining recorded moving images and recorded still images in a user's favorite order.

  In this way, after recording moving images, still images, and playlists on a disc, when the media is mounted on a device that records and plays back only moving images, the recorded videos are played in the order that the user took them. It is desirable to be able to reproduce.

  Even when a moving image, a still image, and a playlist are recorded on a disc, and the medium is attached to a device that records and reproduces only the moving image, and the moving image is additionally recorded on the medium, the device In the above, it is desired that all moving images on the medium are reproduced in the order of recording.

  Furthermore, when a new playlist is created using a recorded video on a device that records and plays back only the video, the playlist should be played back on a device that records and plays back both the video and still images. It is.

  In this way, even when the media is exchanged between a device that supports recording and playback of only moving images and a device that records both moving images and still images, the AV data recorded on the media is the same. It is desired that the data is recorded in the same way when it is played back and AV data is recorded on the medium.

  In addition, even if a device that supports recording and playback of moving images only changes the playlist related to recorded moving images and still images, only the portions related to moving images are changed, and The playlist should be unaffected.

  In addition, it is desirable that a device that supports moving images and still images can record as many still images as possible according to the data size of each still image.

  In addition, it is desirable that a device that supports moving images and still images not only has a still image recording function added to the moving image recording format, but also has expandability that allows other functions to be added.

  Further, if a device corresponding to a moving image and a still image becomes common in the future, it is desirable that recording / reproduction is possible by reading only a data portion in consideration of cooperation between the moving image and the still image.

  In order to satisfy the above required specifications, there has been a method of referring to a still image file from an entry point or a section marker. However, when a disc on which a movie and still images are recorded is mounted on a device capable of recording and playing back only the movie, and part of the movie is deleted by editing processing, the section marker that refers to the still image is deleted along with the movie There was a problem.

  In addition, in the method related to the linkage operation between a moving image and a still image using entry points or section markers, dummy moving image data must be registered when generating a playlist composed only of still images.

  In addition, the still image recording management method using entry points and section markers for such a moving image recording format has a problem that the number of still images that can be shot is limited to the upper limit of the number of entry points and section markers that can be recorded. It was.

  In addition, there is an upper limit on the data size of additional information for entry points and section markers, and there is a problem that sufficient information cannot be held.

  In view of the above problems, the present invention records a moving image between a device that records and reproduces only a moving image that supports only the moving image recording format, and a device that supports the moving image recording format and also records a still image. With respect to reproduction and recording / reproduction of a play list of moving images, an object is to enable recording and reproduction of still images while maintaining forward compatibility and backward compatibility.

  Also, the present invention refers to a still image together with the moving image even when a moving image and a still image are recorded on a disc capable of recording and reproducing only the moving image and a part of the moving image is deleted by editing processing. The section marker is intended not to be deleted.

  Another object of the present invention is to avoid the need to record a dummy moving image even when generating a playlist composed only of still images.

  Another object of the present invention is to make it possible to record a large number of still images without limiting the number of still images that can be taken by the number of recordable section markers.

  In addition, in consideration of the above problems, the present invention provides a recording medium, a recording apparatus, a reproducing apparatus, and a recording medium that can realize smooth reproduction of moving image data and still image data for data recorded on a DVD-RAM disc. An object of the present invention is to provide a recording method and a reproducing method.

  In addition, in consideration of the above-described problems, the present invention can be used even when moving image data and still image data are linked and reproduced using a device other than the device that performed the recording in the linkage of moving image data and still image data. An object of the present invention is to provide a recording medium, a recording apparatus, a reproducing apparatus, a recording method, and a reproducing method that can realize reproduction of AV data without causing confusion to the user.

In order to solve the above-described problems, the AV data recording apparatus of the present invention provides:
One or more moving image objects, one or more still image objects, first reproduction path information indicating the reproduction order of one or more moving image objects, and one or more moving image objects or still image objects are reproduced on an optical disc. An AV data recording apparatus for recording the second reproduction path information shown,
Recording means for recording data on the optical disc;
Control means for controlling the recording means,
The first playback path information is information that specifies a playback target section of the moving image object, and includes at least one first cell information that specifies all or a partial section of the moving image object as a first cell. Indicate the playback order of one or more of the first cells;
The second playback path information is information for specifying a section to be played back of the moving image object and a still image object to be played back. Second cell information referring to the first cell as a second cell, or playback Including one or more pieces of third cell information for specifying the target still image object as a third cell, and indicating a reproduction order of the one or more second cells and the third cells,
The playback order of the first cell in the first playback path information and the playback order of the second cell in the second playback path information are the same playback order.

  The present invention is compatible with video recording / playback and video playlist recording / playback between a device that records and plays back only a video that supports only the video recording format, and a device that also records still images based on the video recording format. And still images can be recorded and played back.

  Also, the present invention refers to a still image together with the moving image even when a moving image and a still image are recorded on a disc capable of recording and reproducing only the moving image and a part of the moving image is deleted by editing processing. Section markers are not deleted.

  Further, the present invention can eliminate the need to record a dummy moving image even when generating a playlist composed only of still images.

  Further, the present invention can record a large number of still images without limiting the number of still images that can be taken by the number of recordable section markers.

Embodiments of the present invention will be described below with reference to the drawings. The configuration of the AV data recording / reproducing apparatus is basically based on the conventional FIG. 18 and FIG. The different points are described below.
(Embodiment 1)
A case where the AV data recording / reproducing apparatus of the present invention records a moving image or a still image will be described. In the following description, the configuration without any supplementary explanation is the same as the conventional example.

  FIG. 64 shows video management information and extended video management information recorded on the DVD-RAM in the first embodiment of the present invention. The video management information includes an original playback path information table and a user-defined playback path information table as in the conventional example. The extended video management information includes an extended original playback path information table and an extended user-defined playback path information table. The same applies to the second to fourth embodiments.

  FIG. 65 shows the structure of the original playback path information table and the extended original playback path information table in Embodiment 1 of the present invention. It is assumed that the data structure of the original reproduction path information table is the same as that in FIG. The extended original playback path information table is composed of extended original playback path information # 1 (v2-O-PGC # 1 information) to extended original playback path information #n (v2-O-PGC # n information). Extended original playback path information (v2-O-PGC information) is extended from general information and extended original cell # information # 1 (v2-O-CELL # 1 information) to extended original cell information #n (v2-O-CELL # n information). ). The same applies to the second to fourth embodiments. Further, it is assumed that the extended video management information in FIG. 64 is a file independent of the video management information.

  FIG. 66 shows the structure of the user playback path information table and extended user playback path information table in Embodiment 1 of the present invention. It is assumed that the data structure of the user reproduction path information table is the same as that of FIG. The extended user playback path information table includes extended user playback path information # 1 (v2-U-PGC # 1 information) to extended user playback path information #n (v2-U-PGC # n information). Extended user playback path information (v2-U-PGC information) is extended from general information and extended user cell #information # 1 (v2-O-CELL # 1 information) to extended user cell information #n (v2-O-CELL # n information). ). The same applies to the second to fourth embodiments.

  FIG. 67 shows the correspondence between original reproduction path information # 1 and extended original reproduction path information # 1 in Embodiment 1 of the present invention. Original playback path information # 1 is composed of an original cell (OC-M) for moving images. On the other hand, the extended original playback path information # 1 is composed of a moving image original cell (OC-M) and a still image original cell (OC-S). The original cell (OC-S) for still images has a copy of the original cell (OC-M) for moving images in the corresponding original reproduction path information # 1 inside. The original cell for still images has link information for still image files (Still # 1, Still # 2, Still # 3). The link information to the JPEG data may be a file path name of a JPEG file, for example.

  Further, the entry point for the original cell of the original playback path information is similarly recorded as the same entry point for the corresponding original cell of the extended original playback path information.

FIG. 68 shows the relationship between user reproduction path information and extended user reproduction path information in Embodiment 1 of the present invention. User reproduction path information # 1 (U-PGC information # 1) is configured from a user cell for moving images. On the other hand, the extended user playback path information (v2-U-PGC information # 1) is composed of a user cell for moving images and a user cell for still images. This still image user cell has link information to still image data (Still # 2). The moving image user cell in the extended user playback path information corresponds to the moving image user cell of the user playback path information, and has link information for the moving image data # 3.
(Movie / Still Image Recording Operation of Embodiment 1)
The AV data recording / reproducing apparatus that supports recording of moving images and still images records cells in the original reproduction path information table of FIG. 65 and / or the extended original reproduction path information table of FIG. 65 when recording moving images or still images. To do. Specifically, when a moving image is first recorded, the original cell for the moving image is recorded in both the original reproduction path information table in FIG. 65 and the extended original reproduction path information table in FIG. On the other hand, when recording a still image, the still image is encoded and recorded as an MPEG-2 video image by the encoder 214, and the moving image original cell (OC-M) that refers to the image data is stored in the original playback path information (O -PGC information). At the same time, the still image is encoded into JPEG data by the still image encoder 224 and recorded on the DVD-RAM. An original cell (OC-S) for a still image that refers to the JPEG data is recorded in the extended original playback path information (v2-O-PGC information). The still picture original cell includes a copy of the original cell referring to the MPEG2 image data.

  As link information to JPEG data, for example, the file path name of a JPEG file is recorded.

  Further, when any entry point (for example, entry point for bookmark, printing, chapter division, etc.) for the original cell for moving picture of the original playback path information is recorded by the user, the corresponding original of the extended original playback path information is recorded. Record the same as the same entry point for the cell. The same applies to entry points for original cells for still images.

On the other hand, when recording a moving image, the AV data recording / reproducing apparatus that supports recording of only a moving image adds an original cell (OC-M) for moving image only to the original reproduction path information table of FIG.
(Playlist Recording Operation of Embodiment 1)
The same applies to the case where the user records a recorded moving image or a playlist that controls the reproduction order for the recorded still image. The playlist is recorded in the user-defined playback path information table and the extended user-defined playback path information table shown in FIGS. An AV data recording / reproducing apparatus capable of recording only moving images updates only the user-defined path information table. The AV data recording / playback apparatus capable of recording moving images and still images updates the extended user-defined playback path information table in addition to updating the user-defined playback path information table.
(Operation for ensuring consistency of reproduction path information according to Embodiment 1)
Also, an AV data recording / playback apparatus capable of recording moving images and still images compares the original playback path information table with the extended original playback path information table before recording the moving picture or still image, and stores each original playback path information. It is verified whether or not the corresponding extended original playback path information exists. If there is no extended original playback path information corresponding to the original playback path information, the extended original playback path information is added.

  In order to easily perform such verification processing, the extended original playback path information table side may have a correspondence between the identification number of the original playback path information and the identification number of the extended playback path information.

  Note that such verification processing and repair processing may be performed at the start of reproduction.

  Even when the extended original playback path information corresponding to the original playback path information does not exist, the new extended original playback path information may not be added to the extended original playback path information table, and the playback may be supported. That is, even when the extended original playback path information corresponding to the original playback path information does not exist at the start of playback, the original playback path information may be played back.

  The same applies to the user playback path information table and extended user playback path information.

  Note that such verification processing and restoration processing may be performed as pre-processing when the user starts editing the original reproduction path information. That is, it may be pre-processing when performing deletion of recorded video, partial deletion, or combination processing.

  With the above configuration, DVD-RAM is passed between a device that records and plays back only a movie that supports only the movie recording format and a device that records still images based on the movie recording format. Even if recording is performed, the moving images can be reproduced in the order in which they were recorded. Further, this does not change even when a still image is recorded between moving image recordings by a device capable of recording still images.

  In addition, even if a movie with still and still images recorded is attached to a device that can only record and play movies, and some movies are deleted by the movie deletion process, still images taken before and after the movie are recorded. Is not deleted.

  Also, when generating a playlist composed only of still images, there is no need to record a dummy moving image that is necessary when a conventional section marker or the like is used.

  In addition, the number of still images that can be taken is not limited to a small number by the number of recordable sections such as section markers, and many still images can be recorded.

  In addition, even when a disc on which video and still images are recorded is mounted on a device that can only record and play back video, and the original cell for video and related video are deleted by the video deletion process, Detecting whether the original playback control information has been changed by individually comparing the cell information between the changed original playback control information and the corresponding extended original playback control information, and It is possible to detect the original cell for the deleted moving image. When it is detected that a change has been made to the original cell for video, the extended original playback control information is updated to the state after the change of the original cell, or the video cell that referenced the deleted video, or In order to delete a still image cell or prohibit the change of the extended original playback control information, it is possible to implement a change prohibition flag bit to suppress an additional change. The moving image cell of the original reproduction control information that is changed by a device capable of recording and reproducing only moving images may refer to MPEG moving image data that records moving images, or may refer to MPEG data that records still images. There is also.

Also, a device capable of recording and reproducing both moving images and still images can reproduce both moving images and still images by referring only to the extended original reproduction control information table. However, for this purpose, a verification process and a repair process are required for the contents added by the AV data recording / reproducing apparatus capable of recording only moving images. In this regard, when a device capable of recording and reproducing both a moving image and a still image reads the medium for the first time, it may be written in the corresponding extended original reproduction control information table. Further, without performing such writing, the original control information corresponding to the logical sum may be reproduced by combining both the original control information table and the extended original control information table at the time of reproduction. The same applies to the user-defined playback path information table and the extended user-defined playback path information table.
(Embodiment 2)
The difference between the second embodiment and the first embodiment is that, at the time of recording a still image, moving image data having the same content as that of the still image (that is, the same subject) is not recorded. Therefore, the original cell in the extended original playback control information does not have duplicate data of the original cell (OC-M) for moving images. Second, the original playback path information constituting the extended original playback path information table has attribute information to be described later. FIG. 69 shows the original playback path information table and the extended original playback path information table according to the second embodiment of the present invention. Indicates. The original reproduction path information constituting the extended original reproduction path information table has attribute information. This attribute information identifies the next state. The state in which the extended original playback path information corresponding to the original playback path information exists, the state in which the original playback path information corresponding to the extended original playback path information does not exist, or the original playback path information corresponding to the extended original playback path information exists. Indicates one of the states that are not. When there is no extended original playback path information corresponding to the original playback path information, the extended original playback path information is composed only of still images. The extended original playback path information table includes extended original playback path # 1 information (v2-O-PGC # 1 information) to extended original playback path #n information (v2-O-PGC # n information). Each original playback path information (v2-O-PGC information) is composed of general information and original cell # 1 information (v2-O-CELL # 1 information) to original cell #n information (v2-O-CELL # n information). Is done.

  In addition, all playback path information that can be played back may or may not be registered in the extended original playback path information table. However, when original playback path information is additionally recorded by a device that records only a moving image, it is not temporarily registered. In this case, when the DVD-RAM disc is installed in a device that records still images and moving images, the device has extended original playback path information corresponding to the original playback path information in the extended original playback path information table. Is detected, and the corresponding extended original playback path information is added. At this time, the attribute information is “contents of the extended original reproduction path information”, and each moving image cell may not be added. Alternatively, the attribute information may be set to “a state where the extended original playback path information corresponding to the original playback path information exists”, and the moving image cell may be copied in the extended original playback path information. In order to easily perform verification processing between the original playback path information and the extended original playback control information, the correspondence between the identification number of the original playback path information and the identification number of the extended playback path information is set to the extended original playback path information table side. You may have it.

  FIG. 70 shows the structure of the user playback path information table and extended user playback path information table in Embodiment 2 of the present invention. The data structure of the user reproduction path information table is the same as that of the conventional example shown in FIG. The extended user playback path information table includes extended user playback path information # 1 (v2-U-PGC # 1 information) to extended user playback path information #n (v2-U-PGC # n information). Extended user playback path information (v2-U-PGC information) is extended from general information and extended user cell #information # 1 (v2-O-CELL # 1 information) to extended user cell information #n (v2-O-CELL # n information). ).

  FIG. 71 shows the correspondence between original playback path information # 1 (O-PGC information # 1) and extended original playback path information # 1 (v2-O-PGC information # 1) in Embodiment 2 of the present invention. Original playback path information # 1 is composed of an original cell (OC-M) for moving images. On the other hand, the extended original playback path information # 1 is composed of a moving image original cell (OC-M) and a still image original cell (OC-S). The original cell for the still image refers to the still image file (Still # 1, Still # 2, Still # 3).

  Further, the entry point for the original cell for moving picture of the original reproduction path information is similarly recorded as the same entry point for the original cell for moving picture corresponding to the extended original reproduction path information.

  FIG. 72 shows user reproduction path information (U-PGC information) and extended user reproduction path information (v2-U-PGC information), original reproduction path information (O-PGC information) and expansion according to Embodiment 2 of the present invention. The relationship of original playback path information (v2-O-PGC information) is shown. A user cell (UC-M) for moving images is recorded in the user reproduction path information # 1. Further, in the extended user playback path information # 1, a moving image user cell (UC-M) and a still picture user cell (UC-S), which are copies of the user cell in the user playback path information # 1, are recorded. To do. The moving image user cell in the user reproduction path information # 1 has link information to the moving image data Movie # 3. The still picture user cell in the extended user playback path information # 1 has link information to the still picture data Still # 2.

  The AV data recording / reproducing apparatus compatible with recording of moving images and still images, when recording moving images or still images, the original reproduction path information table shown in FIGS. 64 and 69 and / or the extended original reproduction path information table of FIG. Record a cell for video. Specifically, when recording a moving image first, as shown in FIG. 71, the original cell (OC-M) for the moving image is stored in both the original reproduction path information table and the extended original reproduction path information table of FIG. Record. Then, the attribute information of the extended original playback path information is set to “both original playback path information and extended original playback path information are present”. On the other hand, when recording a still image, the still image is encoded into JPEG data by the still image encoder 224 and recorded on the DVD-RAM. The still picture original cell (OC-S) having link information to the JPEG data is recorded in the extended original playback path information (v2-O-PGC information # 1). At this time, when recording in the new extended original reproduction path information, the attribute is set to “extended original reproduction path information only”. When recording in existing original playback path information, the attribute information is set to “there is both original playback path information and extended original playback path information”.

  The same applies to the user playback path information table and extended user playback path information.

  As link information to JPEG data, for example, the file path name of a JPEG file is recorded.

  When any entry point for the original cell for moving picture of the original playback path information is recorded by the user, it is similarly recorded as the same entry point for the corresponding original cell of the extended original playback path information. The entry point for the still picture original cell is recorded only on the extended original playback path information side.

  On the other hand, when recording a moving image, the AV data recording / reproducing apparatus corresponding to recording only a moving image adds an original cell for moving image only to the original reproduction path information table shown in FIGS. 64, 69, and 71. Do. At this time, new original playback path information may be added, and a moving image original cell may be recorded therein, or may be recorded in existing original playback path information.

  The same applies when the user records a recorded moving image or a playlist that controls the reproduction order of still images. The playlist is recorded as a user-defined playback path information table and an extended user-defined playback path information table as shown in FIGS. 64, 70, and 72. An AV data recording / reproducing apparatus capable of recording only moving images updates only the user-defined path information table. The AV data recording / playback apparatus capable of recording moving images and still images updates the extended user-defined playback path information table in addition to updating the user-defined playback path information table.

  Also, an AV data recording / playback apparatus capable of recording moving images and still images compares the original playback path information table with the extended original playback path information table before recording the moving picture or still image, and stores each original playback path information. It is verified whether or not the corresponding extended original playback path information exists. If there is no extended original playback path information corresponding to the original playback path information, it is not necessary to add the extended original playback path information.

  The same applies to the user playback path information table and extended user playback path information.

  In order to easily perform such verification processing, the extended original playback path information table side may have a correspondence between the identification number of the original playback path information and the identification number of the extended playback path information.

  Note that such verification processing may also be performed at the start of reproduction.

  Even when the extended original playback path information corresponding to the original playback path information does not exist, the new extended original playback path information may not be added to the extended original playback path information table, and the playback may be supported. That is, even when the extended original playback path information corresponding to the original playback path information does not exist at the start of playback, the original playback path information may be played back.

  Note that such verification processing and restoration processing may be performed as pre-processing when the user starts editing the original reproduction path information. That is, it may be pre-processing when performing deletion of recorded video, partial deletion, or combination processing.

  With the above configuration, moving image data having the same content is not necessary when recording a still image as compared to the first embodiment. This means that it is not necessary to generate MPEG data by generating JPEG data at the time of still image recording, and the implementation can be reduced.

  In addition, a DVD-RAM is passed between a device that records and plays back only a movie that supports only the movie recording format and a device that records still images based on the movie recording format, and each movie is recorded. Also, it becomes possible to reproduce the moving image in the order in which it was recorded. Further, this does not change even when a still image is recorded on the medium by a device that also records a still image.

  In addition, even if a movie with still and still images recorded is attached to a device that can only record and play movies, and some movies are deleted by the movie deletion process, still images taken before and after the movie are recorded. Is not deleted.

  Also, when generating a playlist composed only of still images, there is no need to record a dummy moving image.

  In addition, the number of still images that can be taken is not limited by the number of recordable section markers, and many still images can be recorded.

  In addition, even when a disc on which video and still images are recorded is mounted on a device that can only record and play back video, and the original cell for video and related video are deleted by the video deletion process, Whether the original playback control information has been changed by individually comparing the original cells for both videos between the changed original playback control information and the corresponding extended original playback control information. And the original cell for the deleted moving image can be detected. If it detects that a change has been made to the original video cell, the extended original playback control information will be updated to the changed state, the video cell that referenced the deleted video will be deleted, Alternatively, in order to prohibit the change of the extended original reproduction control information, it is possible to implement an additional change control by providing a change prohibition flag bit.

  A device capable of recording and reproducing both moving images and still images can record and reproduce both moving images and still images by referring to only the extended original reproduction control information table. However, for that purpose, it is necessary to add the contents added by the AV data recording / reproducing apparatus capable of recording only moving images to the extended original information table later. In this regard, when a device capable of recording and reproducing both a moving image and a still image first reads out the medium, it may be additionally written in the corresponding extended original reproduction control information table.

  Further, without performing such additional writing, all original playback path information may be played back using attribute information by combining both the original control information table and the extended original control information table during playback. The same applies to the user-defined playback path information table and the extended user-defined playback path information table. Specifically, if the attribute information of the extended original playback path information is “both original playback path information and extended original playback path information are present” or “only extended original playback path information”, refer to the extended original playback path information table. There is no need to do.

  Unlike the first embodiment, the contents of a recorded still image cannot be confirmed by a device capable of recording and reproducing only a moving image.

  In the second embodiment, the still image cell does not include the moving image cell inside, but may be included as in the first embodiment.

In the second embodiment, playback control information composed only of moving image cells need not be registered in the extended original playback control table, or may be registered.
(Embodiment 3)
The difference between the third embodiment and the first embodiment is that, first, when recording a still image, a moving image having the same content as the still image is not recorded, and the moving image corresponding to the still image is included in the playback path information. The cell is not recorded. Second, at the time of moving image recording, the extended reproduction path information does not include cells for moving images.

  Note that the configurations of the original playback path information table, the extended original playback path information table, the user playback path information table, and the extended user playback path information in the third embodiment are the same as those in FIGS.

  FIG. 73 shows the correspondence between original reproduction path information # 1 and extended original reproduction path information # 1 in Embodiment 3 of the present invention. Original playback path information # 1 is composed of an original cell (OC-M) for moving images. On the other hand, the extended original playback path information # 1 includes an original cell (OC-L) for linking to a moving image cell and an original cell (OC-S) for a still image. The original cell for the still image refers to the still image file (Still # 1). The original cell for still images does not have a copy of the original cell for moving images (OC-M) in the corresponding original reproduction path information # 1. Also, the extended original playback path information # 1 does not include an original cell for moving images. Instead, the link original cell (OC-L) for linking to the video cell is included. For example, this link original cell has information on the number of cells from the beginning of the original reproduction control information # 1.

  FIG. 74 shows the correspondence between original reproduction path information # 1 and extended original reproduction path information # 1 in the third embodiment of the invention. Original playback path information # 1 is composed of an original cell (OC-M) for moving images. On the other hand, the extended original playback path information # 1 is composed of a cell (OC-L) for linking moving image data and an original cell (OC-S) for still images. The original cell (OC-S) for still images has a copy of the original cell (OC-M) for moving images in the corresponding original reproduction path information # 1 inside. The original cell for still images has link information for still image files (Still # 1, Still # 2, Still # 3). The link information to the JPEG data may be a file path name of a JPEG file, for example.

  The AV data recording / reproducing apparatus that supports recording of moving images and still images records cells in the original reproduction path information table of FIG. 69 and / or the extended original reproduction path information table of FIG. 69 when recording moving images or still images. To do. In the case of recording a moving image, as shown in FIG. 73, the original cell for moving image is recorded in the original reproduction path information table, and the link referring to the original cell for moving image in the extended original reproduction path information table of FIG. Record cells for On the other hand, when recording a still image, the still image is encoded into JPEG data by the still image encoder 224 and recorded on the DVD-RAM. A cell referring to this JPEG data is recorded in the extended original playback path information (OC-S).

  On the other hand, when recording a moving image, the AV data recording / reproducing apparatus corresponding to recording of only a moving image adds an original cell only to the original reproduction path information table of FIG.

  The same applies when the user records a recorded moving image or a playlist that controls the reproduction order of still images. The playlist is recorded as a user-defined playback path information table and an extended user-defined playback path information table as in FIG. The AV data recording / reproducing apparatus capable of recording only moving images updates only the user-defined path information table of FIG. The AV data recording / playback apparatus capable of recording moving images and still images updates the extended user-defined playback path information table in addition to updating the user-defined playback path information table. The data structures of the user-defined playback path information table and the extended user-defined playback path information table are shown in FIG.

  With the above configuration, DVD-RAM is passed between a device that records and plays back only a movie that supports only the movie recording format, and a device that records still images based on the movie recording format. Even if it is implemented, it is possible to reproduce the moving image in the order in which it was recorded. Further, this does not change even when a still image is recorded on the medium by a device that also records a still image.

  In addition, even if a movie with still and still images recorded is attached to a device that can only record and play movies, and some movies are deleted by the movie deletion process, still images taken before and after the movie are recorded. Is not deleted.

  Also, when generating a playlist composed only of still images, there is no need to record a dummy moving image.

  In addition, the number of still images that can be taken is not limited by the number of recordable section markers, and many still images can be recorded.

  Further, since there is no overlapping information between the original route control information and the extended original route control information, it can be managed efficiently.

  Unlike Embodiments 1 and 2, a disk on which a moving image and a still image are recorded is mounted on a device capable of recording and reproducing only the moving image, and the original cell for moving image and related moving image are deleted by moving image deletion processing. Even if the cell information is compared between the changed original playback control information and the corresponding extended original playback control information, the original cell for the changed video It is not always possible to specify. Therefore, the update time of the original playback control information and the update time of the extended original playback control information are compared so that if the original playback control information is newer, a change summary can be detected such that the change has been made. May be. In this case, it becomes possible to prohibit the modification of the extended original reproduction control information.

  Unlike Embodiments 1 and 2, a device capable of recording and reproducing both moving images and still images refers to both the extended original reproduction control information table and the original reproduction control information, and both the moving images and the still images. Play. That is, both the original control information table and the extended original control information table are added together, and the original control information corresponding to the logical sum of these is reproduced. The same applies to the user-defined playback path information table and the extended user-defined playback path information table.

  In the second embodiment, playback control information composed only of moving image cells need not be registered in the extended original playback control table, or may be registered.

  In the present embodiment, the still image cell of the extended original reproduction control information is not included in the moving image cell, but may be included as in the first embodiment.

In this embodiment, the extended original playback control information includes a link cell that refers to a video cell instead of a video cell. However, a copy of the video cell recorded in the original playback control information is used. However, it may exist on the extended original reproduction control information side.
(Embodiment 4)
The difference between the fourth embodiment and the first embodiment is that the playback path information includes a moving picture cell and a still picture cell, and also includes a playlist link cell that refers to different playback path information. is there.

  In FIG. 75, user-defined playback path information # 1 (U-PGC # 1) is composed of a user cell (UC-M) for moving images. On the other hand, extended user-defined playback path information # 1 (v2-U-PGC # 1) is a user cell for still images (UC-S), a user cell for moving images (UC-M), and a cell for linking playlists. (UC-L) is included. The still picture user cell (UC-S) refers to the still picture data and records a copy of the corresponding moving picture user cell (UC-M) inside. The playlist link cell (UC-L) records link information to the extended user playback path information # 2. As the link information, for example, it may be a serial number of linked extended user reproduction path information.

  A plurality of link cells that refer to different playlists may be recorded in one extended user playback path information.

  The AV data recording / playback apparatus that supports recording of moving images and still images records the same as in the first embodiment when recording moving images or still images.

  Note that the AV data recording / reproducing apparatus that supports recording of moving images and still images records moving images or still images in the same manner as in the first embodiment, but is not limited thereto. Recording may be performed in the same manner as in the second embodiment or the third embodiment, or a form in which these forms are mixed.

  Further, when a user records a recorded moving image or a playlist that controls the reproduction order of still images, the recording is performed in the same manner as in the first embodiment. However, the feature of this embodiment is that other playlists can be registered when the playlist is recorded. This makes it possible to create an upper playlist that bundles a plurality of playlists after grouping moving images and still images by playlists.

  However, in order to prevent the recording, editing, and playback process from being complicated by the reference from the playlist to the playlist, the reference from the playlist to the playlist counts the highest parent playlist as the first hierarchy, You may restrict | limit to the 3rd hierarchy.

  With the above configuration, it is possible to easily realize the function expansion for the user reproduction path information.

  In addition, with the above configuration, a DVD-RAM is passed between a device that records and plays back only a movie that supports only the movie recording format and a device that records still images based on the movie recording format. Even if the operation is performed, it is possible to reproduce the moving images in the order in which they were recorded. Further, this does not change even when a still image is recorded on the medium by a device that also records a still image.

  In addition, even if a movie with still and still images recorded is attached to a device that can only record and play movies, and some movies are deleted by the movie deletion process, still images taken before and after the movie are recorded. Is not deleted.

  Also, when generating a playlist composed only of still images, there is no need to record a dummy moving image.

  In addition, the number of still images that can be taken is not limited by the number of recordable section markers, and many still images can be recorded.

  In addition, even if a disc on which video and still images are recorded is mounted on a device capable of recording and playing back only video, the original cell for video and related video are deleted by the video deletion process. By comparing the cell information between the original reproduction control information to which the is added and the corresponding extended original reproduction control information, it is possible to detect the original cell for the changed moving image. When it is detected that a change has been made to the original cell for video, it is possible to update the extended original playback control information to the state after the change or to prohibit the change of the extended original playback control information. Become.

  A device capable of recording and reproducing both moving images and still images can record and reproduce both moving images and still images by referring to only the extended original reproduction control information table. However, the content added by the AV data recording / playback device that can record only moving images is excluded. In this regard, when a device capable of recording and reproducing both a moving image and a still image reads the medium for the first time, it may be written in the corresponding extended original reproduction control information table. Further, without performing such writing, the original control information corresponding to the logical sum may be reproduced by combining both the original control information table and the extended original control information table at the time of reproduction. The same applies to the user-defined playback path information table and the extended user-defined playback path information table.

  In the fourth embodiment, the extended user playback path information records a cell for linking to other extended user playback path information, but the extended original playback path information further includes other extended original playback path information. It is also possible to record a cell for linking to.

  In the fourth embodiment, cells for linking to other playlists can be recorded, but data having other functions may be set in the playback path order information. For example, a graphics cell or a background music cell.

  In the fourth embodiment, the cell includes the playback order and the playback time length. However, the AV data referenced from one playback path information is regarded as one group, and the playback order and the playback time length are set. You may handle it without emphasizing it.

  In the fourth embodiment, the playlist link cell is included only in the extended user playback path information, but may be included in the extended original playback path information.

  In the embodiment of the present invention, the original playback path information, the extended original playback path information, the user playback path information, and the extended user playback path information are recorded together in the respective tables. It may be recorded as an independent file. In this case, the original playback path information table, the extended original reproduction path information table, the user playback path information table, and the extended user playback path information table may record file names of separate independent files. Further, each table may be a separate independent file.

  In the embodiment of the present invention, a case is shown in which an entry point is set for each piece of playback path information. However, a section marker may be used.

  In the embodiment of the present invention, recording is performed on a DVD-RAM disk, but the present invention is not limited to this. For example, Blu-ray Disc, MO, DVD-R, DVD-RW, DVD + RW, DVD + R, Any recording medium having a disk shape such as an optical disk such as a CD-R or CD-RW or a hard disk may be used. Further, it may be a semiconductor memory such as a flash memory.

In the embodiment of the present invention, the example of the DVD-RAM-like moving image recording format is used as an example of the moving image recording format, but another moving image recording format such as a moving image recording format of a Blu-ray disc may be used. good.

  In the embodiment of the present invention, the cells constituting the playback path information are only arranged in series, but may be parallel playback path information with overlapping playback timings.

  In the embodiment of the present invention, the recording medium is managed by UDF as a file, but may be FAT, UFS (Unix (registered trademark) File System), NTFS, or the like.

  In the embodiment of the present invention, the example of the moving picture stream is an MPEG-2 program stream. However, an MPEG-2 transport stream, a PES stream, a DV stream, a stream based on ISO Base Media, a QuickTime file, There may be other AV data streams such as WMV (Windows (registered trademark) Media Video) streams. Alternatively, it may be an MPEG-2 transport stream with a time stamp in which a 4-byte arrival time stamp (ATS) is arranged immediately before an 188-byte MPEG-2 transport packet.

  In the embodiment of the present invention, the extended video management information is a file independent of the video management information, but may be stored in the same file.

  In the embodiment of the present invention, the entry point can be set, but the section marker may be set.

  An AV data recording device and a playback device according to the present invention include a recording / playback of a moving image between a device that records and reproduces only a moving image that supports only the moving image recording format, and a device that also records a still image based on the moving image recording format, and It is possible to record and reproduce still images while maintaining compatibility with the recording and reproduction of moving image playlists.

  Also, the present invention refers to a still image together with the moving image even when a moving image and a still image are recorded on a disc capable of recording and reproducing only the moving image and a part of the moving image is deleted by editing processing. Section markers are not deleted.

  Further, the present invention can avoid the need for recording a dummy moving image even when generating a playlist composed of only still images.

  Further, the present invention can record a large number of still images without limiting the number of still images that can be taken by the number of recordable section markers. Therefore, a readable / writable recording medium, in particular, a recording medium on which multimedia data including various formats such as moving image data and still image data, and data such as reproduction path information and group management data is recorded, recording It is useful in a device, a playback device, a recording method, a playback method, a program, and the like.

The figure explaining an example of the interface of the external appearance and related apparatus of a DVD recorder apparatus Block diagram of DVD recorder drive device The figure explaining the continuous area on a disk, and the data storage amount in a track buffer Block diagram of a DVD recorder having a semiconductor memory card and a hard disk drive device Diagram explaining the appearance and physical structure of the disc Diagram explaining the logical data space of the disk Diagram explaining disk directory and file structure Diagram showing the structure of a video object Diagram for explaining MPEG system stream The figure explaining an MPEG-TS stream The figure explaining an MPEG-PS stream Diagram explaining TS packet The figure explaining a PAT table Diagram explaining the placement of video objects on the disk The figure explaining the data structure of video management information The figure explaining the data structure of video management information The figure explaining the relationship between PGC information of video management information, object information, and an object Block diagram showing the functional configuration of the playback device Block diagram showing the functional configuration of the recording apparatus Illustration of still image data directory and file structure The figure explaining the data structure of program management information Data structure diagram when Entry Point management information has extended information Data structure diagram when there is extended information in Section Marker management information Extended information data structure diagram Data structure diagram when describing link information to external extended information in extended information (1) Data structure diagram when describing link information to external extended information in extended information (2) Data structure diagram of extended information ID Data structure diagram of extended information set (1) Data structure diagram of extended information set (2) Data structure diagram of extension information sub_ID and copyright management information Data structure diagram when a pointer to thumbnail data is described in the extended information Data structure diagram when a pointer to thumbnail data is described in the extended information of Entry Point Data structure diagram when describing link information to still image file in extended information (1) Explanatory drawing of the reproduction | regeneration order of the program to which Still Section Maker was added Data structure diagram when describing link information to still image file in extended information (2) Flow chart showing the operation of the device when recording moving images and still images Flow chart showing the operation of the device during playback of moving images and still images Explanatory drawing of the method of composing a still picture only program using Section Maker Explanatory drawing of the method of configuring user-defined programs (1) Explanatory diagram of differences in display between still image compatible devices and non-compatible devices (1) An explanatory diagram of a method for recording link information to a still image file in extended information and recording still image data encoded in MPEG in the main part Explanatory diagram of the difference in display between still image compatible devices and non-compatible devices (2) Explanatory drawing of the method of composing a still picture only program by combining the main part of MPEG encoded still picture and Section Maker. Explanatory drawing of the method of configuring user-defined programs (2) Description of how to record link data to still image files in the extended information and record special data in the main part Explanatory diagram of display differences between still image compatible devices and non-compatible devices (3) Explanatory drawing of the method of configuring a program with only still images by combining special data and Section Maker Explanatory diagram of the method of configuring user-defined programs (3) Explanatory drawing of the data structure of Section Maker with overlay attribute information Explanatory drawing of the difference in display when Section Maker with overlay attribute information is added or not Section Maker data structure diagram with pointer to thumbnail data Data structure diagram of Entry Point with a pointer to thumbnail data Configuration diagram of external extended information file for still images Data structure diagram of the top part of the DCF basic file Data structure diagram when recording a reference to a still image file in the extended information area of Entry Point management information The figure which shows the detailed data structure of the DCF basic file The figure which shows the detailed data structure of the TIFF file which complies with the Exif standard The figure which shows the physical data arrangement | positioning on a DVD-RAM disk (A) shows a DVD-RAM disc on which a DCF basic file is recorded, and also shows an operation when the DVD-RAM disc is read to display a thumbnail or search for a DCF basic file. (B) a DCF basic file is recorded. The figure which shows the operation | movement at the time of reading the DVD-RAM disc which read the DVD-RAM disc, and displaying an image Diagram showing the structure of a DVD camcorder The figure which shows the apparatus structure when inserting a DVD-RAM disk in the DVD-RAM drive of a DVD camcorder, and accessing from a personal computer. The figure which shows the DVD-RAM disc 301 which stored several still image files (DSC object). (A) A conventional DVD-RAM disc in which a DCF basic file is recorded, and a diagram showing an operation when the DVD-RAM disc is read to perform thumbnail display or DCF basic file search. The figure which shows the operation | movement at the time of reading the DVD-RAM disc which recorded the DCF basic file, and reading out the DVD-RAM disc The figure which shows the video management information and extended video management information in Embodiment 1. The figure which shows the original reproduction path | route information table and extended original reproduction path | route information table in Embodiment 1 The figure which shows the user reproduction path | route information table and extended user reproduction path | route information table in Embodiment 1. The figure which shows the original reproduction | regeneration path | route information and extended original reproduction | regeneration path | route information in Embodiment 1. The figure which shows the user reproduction path information and extended user reproduction path information in Embodiment 1 The figure which shows the original reproduction path | route information table and extended original reproduction path | route information table in Embodiment 2 The figure which shows the user reproduction path | route information table and extended user reproduction path | route information table in Embodiment 2. The figure which shows the original reproduction path information and extended original reproduction path information in Embodiment 2. The figure which shows the user reproduction path information and extended user reproduction path information in Embodiment 2. The figure which shows the original reproduction | regeneration path | route information and extended original reproduction | regeneration path | route information in Embodiment 3. The figure which shows the user reproduction path information and extended user reproduction path information in Embodiment 3 The figure which shows the user reproduction path information and extended user reproduction path information in Embodiment 4

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 DVD-RAM disk 101,201 Optical pick-up 102,202 ECC processing part 103,203,220 Track buffer 104,210 Switch 105,214 Encoder 106,205,206,218 Decoder 207 Audio decoder 208 Still picture decoder 211 Control part 212 System control unit 213 Analog broadcast tuner 215 Digital broadcast tuner 216 Analysis unit 217 Display unit 219 Digital I / F unit 221 Drive 222 User I / F unit 223 Camera unit 224 Still image encoder

Claims (2)

One or more moving image objects, one or more still image objects, first reproduction path information indicating the reproduction order of one or more moving image objects, and one or more moving image objects or still image objects are reproduced on an optical disc. An AV data recording apparatus for recording the second reproduction path information shown,
Recording means for recording data on the optical disc;
Control means for controlling the recording means,
The first playback path information is information that specifies a playback target section of the moving image object, and includes at least one first cell information that specifies all or a partial section of the moving image object as a first cell. Indicate the playback order of one or more of the first cells;
The second playback path information is information for specifying a section to be played back of the moving image object and a still image object to be played back. Second cell information referring to the first cell as a second cell, or playback Including one or more pieces of third cell information for specifying the target still image object as a third cell, and indicating a reproduction order of the one or more second cells and the third cells,
The AV data recording apparatus according to claim 1, wherein the playback order of the first cell in the first playback path information and the playback order of the second cell in the second playback path information are the same playback order. An apparatus for reproducing the moving image object and the still image object recorded on the optical disc,
Reading means for reading the moving image object and the still image object from the optical disc;
Reproduction means for reproducing the read moving image object and the still image object;
Control means for controlling the reading means and the reproducing means,
The control means includes
Receiving an instruction to select one piece of reproduction path information from the second reproduction path information;
When the second playback path information is selected, the reading means and the playback means are controlled so that the second cell information or the third cell information included in the second playback path information is sequentially read from the disk and played back. 2. The AV data reproducing apparatus according to claim 1, wherein:

Images