JP4332810B2 - Logical format identification method - Google Patents

Description

The present invention relates to a logical format identification method , and more particularly, to a logical format identification method that can present a user-friendly screen.

  Video recording that records video using recording media such as DVD (Digital Versatile Disk), HDD (Hard Disk Drive), or flash memory, which has a data hierarchy such as physical layer, logical layer, and application layer in recent years The number of devices is increasing. In this case, the recording medium defines one or more elements in a plurality of layers. Therefore, the video recording apparatus corresponds to one or more elements defined in a plurality of layers of the recording medium.

  For example, when the recording medium is a DVD, the video recording device is defined in the physical layer, and can be written only once DVD-R (Digital Versatile Disk Recordable) and additionally recordable DVD-RW (Digital Versatile Disk Recordable). Re-recordable), which is defined in the application layer, VF (Video Format Recording), which is difficult to edit, and VR (Video Recording Format), which is easy to edit. Corresponds to two elements.

  When recording video data on a DVD using this video recording apparatus, the user attaches the DVD to the drive of the video recording apparatus. The video recording apparatus is a DVD-ROM (Digital Versatile Disk Read Only), for example, which is a read-only DVD, or only once, as in the optical disk apparatus disclosed in Patent Document 1. The physical layer elements such as the writable DVD-R are identified. Furthermore, the video recording apparatus similarly identifies the elements of the application layer. As a result of these identifications, the video recording apparatus displays a display screen 1 as shown in FIG. 1 on the monitor.

  In FIG. 1, “-RW” indicating that the mounted DVD corresponds to a recordable DVD-RW (Digital Versatile Disk Re-recordable) in the physical layer in order from the upper left of the display screen 1. Is displayed, and “VF” indicating that the loaded DVD corresponds to a VF that is difficult to edit in the application layer is displayed. Further, “Recording” indicating that recording is currently being performed is displayed, and “0:22:33” indicating that the recording elapsed time is 22 minutes 33 seconds is displayed.

  Thus, on the display screen 1, the elements defined in each hierarchy are displayed for each hierarchy. Therefore, the user recognizes that the attached DVD can be additionally recorded in the physical layer by looking at “-RW” on the display screen 1, and sees the attached DVD by looking at “VF” on the display screen 1. However, it can be recognized that the editing work is difficult in the application layer.

JP-A-10-199017 (page 11-12)

  However, in general, the user views the display screen 1 in order to know the functions corresponding to the mounted DVD. Therefore, information indicating whether the function supported by the DVD is defined in the physical layer or the application layer is not necessary information for the user. For example, when a user who sees only “-RW” on the display screen 1 and thinks that the attached DVD can be additionally written, wants to edit the DVD, the user actually sees “VF” on the display screen 1. "Is displayed, and it may be difficult to edit the mounted DVD. As described above, the display screen 1 displayed by layer has a problem that it is difficult for the user to understand the function corresponding to the mounted DVD.

  Furthermore, as described above, when the elements defined in each hierarchy are displayed for each hierarchy, the video recording apparatus requires an area to be displayed as the hierarchy increases. Therefore, for example, when the video recording apparatus is a mobile phone or the like with a limited display area, the video recording apparatus has a problem that it is difficult to display elements for each of a number of layers.

  The present invention has been made in view of such a situation, and makes it possible to present a user-friendly and easy-to-understand screen.

A logical format identification method according to an aspect of the present invention is a logical format identification method for identifying a logical format of an optical recording medium. is information used to generate management information of the recorded data, the temporary management information is information for temporarily manage title information of the content recorded on the optical recording medium is recorded on the optical recording medium A temporary management information determining step for determining whether or not the temporary management information is recorded on the optical recording medium, and determining whether or not the root directory of the file system of the optical recording medium exists. Root directory determination step and if it is determined that the root directory exists, the specified file exists in the root directory And a predetermined file determination step of determining whether or not Luke, based on the result of discrimination, identifies the logical format of an optical recording medium.

The optical recording medium is either a DVD-R (Digital Versatile Disk Recordable) or a DVD-RW (Digital Versatile Disk Re-recordable), and the temporary management information is recorded on the optical recording medium by the temporary management information determination step. If it is discriminated, the logical format of the optical recording medium can be identified as VF (Video Format Recording) .

The optical recording medium is either a DVD-R (Digital Versatile Disk Recordable) or a DVD-RW (Digital Versatile Disk Re-recordable), and a predetermined file exists in the root directory of the optical recording medium by a predetermined file determination step. If it is determined, the logical format of the optical recording medium can be identified as VR (Video Recording Format) .

When it is determined that the predetermined file does not exist in the root directory, a blank disk determination step of determining whether or not the optical recording medium is a blank disk can be further provided .

In the present invention, information used for generating management information of data recorded on an optical recording medium in the termination process for enabling the optical recording medium to be reproduced by a reproducing apparatus, temporary-management information title information of the recorded content is temporarily management information to the, whether or not recorded in the optical recording medium is discriminated, it determined a temporary management information is not recorded in the optical recording medium If it is determined, whether or not the root directory of the file system of the optical recording medium exists is determined. If it is determined that the root directory exists, it is determined whether or not a predetermined file exists in the root directory. Based on the determination result, the logical format of the optical recording medium is identified.

  According to the present invention, an easy-to-understand screen with visibility can be presented to the user.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 2 shows a configuration example of the photographing apparatus 11 to which the present invention is applied. The photographing apparatus 11 is configured by, for example, a camcorder (camera integrated video recorder). In FIG. 2, the control unit 21 includes a memory (not shown), is supplied from the communication unit 31 via a network (not shown), and is supplied from the program loaded in the built-in memory or the drive 24, and the built-in memory. Various processes are executed in accordance with the program loaded in. Further, the control unit 21 controls the entire photographing apparatus 11 in accordance with a user instruction input via the operation input unit 30. The memory built in the control unit 21 also appropriately stores data necessary for the control unit 21 to execute various processes.

  The camera unit 22 is configured by a CCD (Charge-Coupled Devices) imaging device or the like. In addition to the CCD image sensor, a CMOS (complementary metal-oxide semiconductor) image sensor may be used. The camera unit 22 captures light from a subject (not shown) and outputs video data corresponding to the subject image to the encoder 23. The encoder 23 encodes the video data supplied from the camera unit 22 by, for example, MPEG (Moving Picture Expert Group) 2 system. Although illustration is omitted, in the photographing device 11, the audio data captured from the microphone is also encoded by the audio encoder and processed in the same manner as the video data.

  The control unit 21 acquires the video data encoded by the encoder 23 and outputs it to the drive 24. The drive 24 is connected to the control unit 21 via the ATA. The drive 24 records the video data supplied from the control unit 21 on the mounted optical disc 25 based on the control from the control unit 21. The optical disk 25 is constituted by, for example, a DVD (Digital Versatile Disk) which is a large capacity optical disk.

  The optical disc 25 defines a physical layer that constitutes a physical format for saving data, a logical layer that constitutes a logical format for saving data, and an arrangement of data at the time of saving. It has a data hierarchical structure such as an application layer constituting the format, and defines several elements for each layer.

  Here, FIG. 3 shows a data hierarchical structure that the optical disc 25 has. The optical disc 25 has three layers of a physical layer, a logical layer, and an application layer in order from the lowest layer. The physical layer stipulates two types of elements (disc type): a DVD-R (Digital Versatile Disk Recordable) that can be written only once and a DVD-RW (Digital Versatile Disk Re-recordable) that can be written to once. (Have). The logical layer has a UDF (Universal Disk Format) that allows the data on the optical disc 25 to be read by a personal computer or the like. The application layer defines two types of elements (format types) VF (Video Format Recording) and VR (Video Recording Format) as formats that can be recorded and played back, and DVD-ROM (Digital Versatile) as a format that can be played back. The DVD-Video format used in “Disk Read Only” is defined.

  As shown in FIG. 3, the photographing apparatus 11 corresponds to two types of elements defined in the physical layer of the optical disc 25: a DVD-R that can be written only once and a DVD-RW that can be additionally written. Yes. Further, the photographing apparatus 11 is compatible with UDF that is stipulated in the logical layer of the optical disc 25 and that can read data on the optical disc 25 with a personal computer or the like.

  The photographing apparatus 11 is compatible with the DVD-Video format generally applied to DVD-ROM as a reproducible format defined in the application layer of the optical disc 25. Further, the photographing apparatus 11 supports two types of elements (format types) VF and VR as formats that can be recorded and reproduced.

  In VF, video data is recorded in a single stroke, so editing is difficult. On the other hand, VR is not compatible with the DVD-Video format, so that it is difficult to reproduce it with a DVD reproducing apparatus that reproduces a DVD-ROM. However, since VR is a format that can play back and manage video data recorded at random, it is advantageous for editing work. Note that VF is a format compatible with the DVD-Video format, and can be matched with the DVD-Video format by finalizing processing, as will be described later with reference to FIGS. 8 and 9. Therefore, it can be considered that the application layer substantially defines two elements, VF and VR.

  As a combination of a physical layer and an application layer in the optical disc 25, a combination of a physical layer DVD-R and an application layer VF, a combination of a physical layer DVD-R and an application layer VR, a physical layer DVD-RW, and an application layer There are theoretically four types of VF combinations and physical layer DVD-RW and application layer VR combinations. However, since a combination of a DVD-R that can be written only once and a VR that is advantageous for editing work is a combination that is not very effective even if it exists, it is often not actually used.

  Therefore, when recording video data on the optical disc 25, the photographing apparatus 11 can write the function of the physical layer DVD-R and the application layer VF (that is, can be written only once and is compatible with the DVD-Video format). However, the function of the DVD-RW of the physical layer and the function of the VF of the application layer (that is, it can be additionally written and is compatible with the DVD-Video format, but the editing work is difficult). 3), and a physical layer DVD-RW and an application layer VR function (that is, a function that can be additionally written and is not compatible with the DVD-Video format but is advantageous for editing work). The type of optical disc 25 is identified.

  Returning to FIG. 2, when the optical disc 25 is loaded in the drive 24, the drive 24 measures the reflectance of the optical disc 25 and applies servo. At this time, the drive 24 reads a disk profile which will be described later with reference to FIG. Based on the disk profile supplied by the drive 24, the control unit 21 identifies whether the type of the disk, which is an element defined in the physical layer of the optical disk 25, is DVD-R or DVD-RW. .

  Further, the drive 24 reads information and video data from the optical disc 25 and outputs them to the control unit 21. The control unit 21 identifies the type of format (VF or VR) that is an element defined in the application layer of the optical disc 25 based on the information supplied by the drive 24. Thereafter, the control unit 21 outputs the identified disc type and format type to a GUI (Graphical User Interface) generation unit 27. The format type identification process in the application layer of the optical disc 25 will be described later with reference to FIG.

  The drive 24 supplies the video data read from the optical disc 25 to the decoder 26 via the control unit 21. The decoder 26 decodes the video data supplied from the control unit 21 and outputs the decoded video data to the GUI generation unit 27.

  A GUI (Graphical User Interface) generation unit 27 generates video data of one piece of information (characters, icons, etc.) corresponding to the disc type and the format type of the optical disc 25 under the control of the control unit 21 and a decoder. 26 is superimposed on the video data supplied from 26 and output to the output control unit 28. Further, the GUI generation unit 27 generates video data such as detailed information corresponding to the disc type and format type of the optical disc 25 supplied from the control unit 21 and superimposes it on the video data supplied from the decoder 26. Output to the output control unit 28.

  The output control unit 28 displays the video data supplied from the GUI generation unit 27 on an LCD (Liquid Crystal Display) 29 or a display device connected via a terminal (not shown). The operation input unit 30 includes input devices such as a cross key and a touch panel for inputting an operation command from the user, and outputs an operation command input from the user to the control unit 21. The communication unit 31 performs communication via a network (not shown).

  Next, the display control process of the photographing apparatus 11 will be described with reference to the flowchart of FIG.

  In step S1, the drive 24 stands by until the optical disc 25 is loaded. The user mounts the optical disc 25 on the drive 24 of the photographing device 11 in order to photograph the subject using the photographing device 11 and record video data corresponding to the image of the subject. In response to this, the drive 24 determines in step S1 that the optical disk 25 is loaded, and proceeds to step S2.

  In step S2, the drive 24 measures the reflectance of the optical disc 25 and applies servo. At this time, the drive 24 reads the disk profile from the optical disk 25, outputs the read disk profile to the control unit 21, and proceeds to step S3.

  FIG. 5 shows Physical Format Information that defines a disc profile read from the optical disc 25.

  Physical Format Information is recorded on the optical disc 25 with the radius R = 23.91 mm of the optical disc 25 and PSN (Physical Serial Number) = 2F200h as the head, and as shown in FIG. 5, "Book type", "Part Version" , “Disc size” and “MAX xfer rate”. When the optical disc 25 is a DVD-R, the Physical Format Information is formed by pre-recording, and when the optical disc 25 is a DVD-RW, it is formed by embossing.

  The disc profile indicates “Book type” indicating a media type (disc type) such as DVD-R or DVD-RW and a version of a standard such as v1.0 or v2.0 in Physical Format Information. Identified and defined by “Part Version”. Therefore, the control unit 21 can identify the type of the disk that is an element of the physical layer of the optical disk 25 based on the disk profile. In FIG. 5, the vertical and horizontal numbers indicate the number of bytes of each data, and information such as “Disc structure” is recorded after “MAX xfer rate” of Physical Format Information.

  Since such a disk profile is supplied from the drive 24, in step S3, the control unit 21 determines the type of the disk (DVD-RW or DVD-R or the like) that is an element of the physical layer of the optical disk 25 based on the disk profile. ) Is identified, and the process proceeds to step S4.

  Next, the drive 24 reads information and video data of the optical disc 25 recorded on the optical disc 25 and outputs the information to the control unit 21. Correspondingly, in step S4, the control unit 21 outputs the video data to the decoder 26, and identifies the type of format that is an element of the application layer based on the information of the optical disc 25 supplied from the drive 24. The format is identified. Then, the control unit 21 outputs the disc type identified in step S3 and the format type identified in step S4 to the GUI generation unit 27. This application layer format identification processing will be described with reference to the flowchart of FIG.

  First, the control unit 21 determines whether or not the format type in the application layer is VF. FIG. 7 shows a configuration example of a logical format of the optical disc 25 by VF.

  The logical format of the optical disk 25 by the VF includes a UDF (Universal Disc Format) area that is a file system from the inner periphery of the optical disk 25, a VMG (Video Manager) area that manages the entire video data, and a maximum of 99 VTS (Video Title). Set). Each VTS has VTSI (Video Title Set Information) in which title information is recorded, VTSTT_VOB (Video Object Set for Titles in a VTS) composed of MPEG2 Program Stream, and VTSI_BUP (Backup of VTSI) which is a backup of VTSI. ).

  There are two types of writing formats for DVD-RW: an incremental recording system (hereinafter referred to as INC system) and a restricted overwrite system (hereinafter referred to as ROW system). The INC method is a sequential writing method, and has a feature that once written, it cannot be overwritten in principle. The ROW method can be overwritten, but recording to an unrecorded area has a feature that only the sequential writing method is used, as in the INC method. The recording area information of the INC system and the ROW system is managed in a recording management area (hereinafter referred to as RMA) (not shown) on the inner periphery of the optical disc 25. Since the DVD-R cannot be physically overwritten, the INC system is used as a writing format.

  FIG. 8 shows a recording procedure of the INC system on the optical disc 25. In the case of the INC system, a maximum of three areas to be written at one time are defined, and these areas are called Rzones. This Rzone is also managed by RMA. 8 is executed by the drive 24 under the control of the control unit 21.

  First, as shown in FIG. 8A, the drive 24 reserves an area for UDF and VMG (Rzone 1) and an area for VTSI (Rzone 2). The area behind this Rzone 2 is an Invisible Rzone, where data can be effectively added. In FIG. 8B, the drive 24 finishes recording the actual data VTSTT_VOBS. That is, when the recording is stopped after the start of recording, the drive 24 immediately generates VTSI information and records it as VTSI_BUP. This VTSI_BUP is used for backup management.

  As shown in FIG. 8C, the drive 24 records a temporary VMGI (Temporary Video Manager Information; TMP_VMGI) that temporarily manages VTSI and recorded actual data information in Rzone2. At this point, the first title (VTS # 1) is completed as shown in FIG. 8D. Thereafter, the drive 24 reserves a VTSI area (Rzone 3) for the title following VTS # 1.

  As shown in FIG. 8E, the drive 24 finishes recording the actual data VTSTT_VOBS. That is, when the recording is stopped after starting the second recording, the drive 24 immediately generates VTSI information and records it as VTSI_BUP. In FIG. 8F, the drive 24 records VTSI and TMP_VMGI in Rzone3. As shown in FIG. 8G, at this time, the second title (VTS # 2) is completed, and information on VTS # 1 and VTS # 2 is recorded in TMP_VMGI.

  Thereafter, by repeating the same procedure, N titles (VTS # 1 to VTS # N) are recorded as shown in FIG. 8H. Thereafter, the drive 24 finally performs a finalizing process in order to match the DVD-Video format. Specifically, the drive 24 creates UDF and VMG from the management information of each title in TMP_VMGI and records it in Rzone1. Further, lead-in and lead-out are recorded.

  FIG. 9 shows a recording procedure of the ROW method onto the optical disc 25. In the case of the ROW method, the entire recording area of the optical disc 25 is handled as one Rzone. 9 is also executed by the drive 24 under the control of the control unit 21 as in the process of FIG.

  First, as shown in FIG. 9A, the drive 24 reserves an area for UDF and VMG and an area for VTSI, so that the address NWA (Next Writable Address) for the next recording by padding fixed data or the like is reserved. ). In FIG. 9B, the drive 24 generates VTSI information immediately after recording of the actual data VTSTT_VOBS, and records it as VTSI_BUP. Then, the drive 24 advances NWA by padding the VTSI area of the next title.

  The drive 24 records the VTSI before the VTSTT_VOBS as shown in FIG. 9C. Furthermore, the drive 24 records TMP_VMGI between the UDF area and the VMG area (in this case, padding). As shown in FIG. 9D, the first title (VTS # 1) is completed at this point. Thereafter, immediately after the recording of the actual data VTSTT_VOBS is completed, the drive 24 generates VTSI information and records it as VTSI_BUP after that. Then, the drive 24 advances NWA by padding the VTSI area of the next title.

  Drive 24 records the VTSI before VTSTT_VOBS as shown in FIG. 9E. Then, the drive 24 overwrites TMP_VMGI between the UDF area and the VMG area. As shown in FIG. 9F, the second title (VTS # 2) is completed at this point.

  Thereafter, by repeating the same procedure, N titles (VTS # 1 to VTS # N) are recorded as shown in FIG. 9G. Thereafter, the drive 24 finally executes a finalizing process in order to match the DVD-Video format. Specifically, the drive 24 creates UDF and VMG from the management information of each title in TMP_VMGI, and records it in the reserved area by padding. Further, lead-in and lead-out are recorded.

  As described above, in the INC system, TMP_VMGI exists in each VTS # N of the optical disc 25. In the ROW method, TMP_VMGI exists between the UDF area and the VMG area of the optical disc 25. That is, regardless of whether the INC method or the ROW method is used, video data is recorded on the optical disc 25, and TMP_VMGI is recorded on the VF optical disc 25.

  Returning to FIG. 6, in step S21, the control unit 21 determines whether or not TMP_VMGI is recorded on the optical disc 25. When determining that TMP_VMGI is recorded on the optical disc 25, the control unit 21 proceeds to step S22. The control unit 21 identifies that the format type that is an element of the application layer of the optical disc 25 is VF. Then, the fact that the optical disk 25 is VF is output to the GUI generation unit 27 together with the type of the disk identified in step S3, and the process proceeds to step S5 in FIG.

  If it is determined in step S21 that TMP_VMGI is not recorded on the optical disc 25, that is, if it is determined that the format type that is an element of the application layer of the optical disc 25 is not VF, in step S23, the control unit 21 retrieves the root directory from the UDF area and determines whether or not there is a root directory on the optical disc 25. That is, the control unit 21 determines whether or not the optical disk 25 can recognize the UDF file system root directory.

  In step S23, the control unit 21 searches for the root directory based on the UDF area of the optical disc 25 (described above with reference to FIG. 7), and if it is determined that there is no root directory, the process proceeds to step S28. . In step S23, the control unit 21 retrieves the root directory from the UDF area of the optical disc 25, and if it is determined that there is a root directory, the control unit 21 proceeds to step S24, and the control unit 21 adds the DVD_RTAV directory to the root directory of the UDF. In addition, VR_MANGR. It is determined whether there is an INFO file.

  In step S24, the DVD_RTAV directory is in the UDF root directory of the optical disc 25, and VR_MANGR. If it is determined that there is an INFO file, the process proceeds to step S25, where the control unit 21 identifies that the optical disk 25 is VR, and that the optical disk 25 is VR, along with the type of disk identified in step S3. The data is output to the GUI generation unit 27, and the process proceeds to step S5 in FIG.

  If it is determined in step S24 that there is no DVD_RTAV directory in the UDF root directory of the optical disc 25, or there is a DVD_RTAV directory in the UDF root directory of the optical disc 25, VR_MANGR. If it is determined that there is no INFO file, the process proceeds to step S26.

  In step S26, the control unit 21 has a VIDEO_TS directory in the UDF root directory of the optical disc 25, in which the VIDEO_TS. It is determined whether or not an INFO file exists, and a VIDEO_TS directory is present in the UDF root directory of the optical disc 25, and VIDEO_TS. If it is determined that there is an INFO file, the process proceeds to step S27, where the control unit 21 identifies that the optical disk 25 is in the DVD-Video format, and identifies in step S3 that the optical disk 25 is in the DVD-Video format. Along with the disc type, the data is output to the GUI generation unit 27, and the process proceeds to step S5 in FIG.

  If it is determined in step S26 that there is no VIDEO_TS directory in the UDF root directory of the optical disc 25, or there is a VIDEO_TS directory in the UDF root directory of the optical disc 25, the VIDEO_TS. If it is determined that there is no INFO file, the process proceeds to step S28.

  In step S28, the control unit 21 determines whether or not the optical disk 25 is a blank disk. If the optical disk 25 is determined to be a blank disk, the control unit 21 proceeds to step S29, and the control unit 21 determines that the optical disk 25 is a blank disk. And the fact that the optical disc 25 is a blank disc is output to the GUI generation unit 27 together with the disc type identified in step S3, and the process proceeds to step S5 in FIG.

  If it is determined in step S28 that the optical disk 25 is not a blank disk, in step S30, the control unit 21 has corrupted the data on the optical disk 25 or the optical disk 25 is an illegal file system. 4 is output to the GUI generating unit 27 together with the type of the disc identified in step S3, and the process proceeds to step S5 in FIG. move on.

  As described above, the format type which is an element defined in the application layer of the optical disc 25 is identified, and the result is combined with the disc type which is an element defined in the physical layer identified in step S3. And output to the GUI generation unit 27.

  Therefore, in step S5 of FIG. 4, the GUI generation unit 27 outputs video data of one piece of information (characters, icons, etc.) corresponding to the disc type and format type of the optical disc 25 in accordance with control of the control unit 21. It is generated, superimposed on the video data supplied from the decoder 26, and output to the output control unit 28. That is, the GUI generation unit 27 corresponds to the disc type and format type of the optical disc 25, one icon corresponding to the physical layer DVD-R and the application layer VF, the physical layer DVD-RW, and the application layer. Or the video data of one icon corresponding to the VR of the physical layer DVD-RW and the application layer.

  In step S5, if the optical disc 25 is a blank disc, video data of information that prompts initialization is generated. If the optical disc 25 is a disc that cannot be recorded or reproduced, a disc that cannot be recorded or reproduced. Video data of information indicating that is generated is generated. If the optical disc 25 is in the DVD-Video format, an icon for notifying the user that it is for reproduction only may be generated in step S5.

  After the process of step S5, the process proceeds to step S6, where the output control unit 28 displays the video data supplied from the GUI generation unit 27 on an LCD (Liquid Crystal Display) 29 as shown in FIG. The process ends.

  FIG. 10 is a configuration example of the display screen 51 displayed on the LCD 29. In the case of the example in FIG. 10, the characters “recording” indicating that recording is currently being performed are displayed on the right side at the top of the display screen 51, indicating that the elapsed recording time is 22 minutes 33 seconds. 0:22:33 "is displayed. On the left side of “Recording”, an icon 61 indicating that the disc type of the optical disc 25 is “DVD-RW” and the format type of the application layer is “VR” is shown.

  Thus, the user can see that the mounted optical disc 25 is a disc that can be additionally written and is not compatible with a general-purpose DVD-ROM, but is advantageous for editing work. Can be recognized instantly. In other words, the user can recognize the function supported by the optical disc 25 only by looking at one icon.

  Further, the user designates (selects) the icon 61 by using the operation input unit 30, whereby detailed information corresponding to the icon 61 (disc type “DVD-RW” and format type “VR”) is displayed. It can also be displayed on an LCD (Liquid Crystal Display) 29.

  The detailed information display control process will be described with reference to the flowchart of FIG.

  While the display screen 51 is displayed on the LCD 29 of the photographing apparatus 11, the control unit 21 stands by until an instruction for the icon 61 is input by the user via the operation input unit 30 in step S61. The user presses the part where the icon 61 is displayed on the LCD 29 with a finger. As a result, information indicating that the icon 61 has been instructed is input to the control unit 21 via the touch panel constituting the operation input unit 30. Therefore, in step S61, the control unit 21 determines that an instruction for the icon 61 has been input, and proceeds to step S62.

  In step S62, the control unit 21 stores detailed information corresponding to the disc type “DVD-RW” and the format type “VR” of the mounted optical disc 25 in the built-in memory. Read from the database as shown, and output to the GUI generation unit 27.

  FIG. 12 shows a configuration example of a database stored in the memory. In the example of FIG. 12, in the case of the optical disc 25 whose physical layer element disc type is “DVD-R” and whose application layer element format type is “VF”, the detailed information is “once. Only recording is possible. Playback is possible on other devices. " In the case of the optical disc 25 whose physical layer element is “DVD-RW” and whose application layer element is “VF”, the detailed information is “recordable any number of times on other devices” It can be played ". In the case of the optical disc 25 whose physical layer element is “DVD-RW” and whose application layer element is “VR”, the detailed information is “recordable and editable any number of times”. It is said that.

  In step S63, the GUI generation unit 27 generates video data of detailed information corresponding to the disc type and format type of the optical disc 25 supplied from the control unit 21, and superimposes it on the video data supplied from the decoder 26. To the output control unit 28.

  In step S64, the output control unit 28 causes the LCD 29 to display the video data supplied from the GUI generation unit 27 as shown in FIG.

  FIG. 13 shows a state in which the icon 61 is designated (selected) on the display screen 51 displayed on the LCD 29. In the case of the example of FIG. 13, the icon 61 indicating that the disc type of the optical disc 25 is “DVD-RW” and the format type is “VR” is selected, and the detailed information 71 of the icon 61 is “You can record as many times as you like”.

  As described above, even a user who does not know a word such as “DVD-RW” or “VR” presses this icon 61 to display one detailed information 71 of the optical disc 25, so that it is attached. It is possible to immediately recognize that the optical disc 25 is a disc that can be additionally written and can be edited simply by looking at the detailed information 71.

  As described above, the imaging device 11 can improve the user's immediate visibility by displaying elements in a plurality of layers as one piece of information (icon). In addition, a combination that is not actually used, such as a combination of a DVD-R that can be written only once and a VR that is advantageous for editing work, is not displayed even if it exists. Thus, user confusion can be suppressed.

  Furthermore, since a large number of pieces of information can be represented by a single display (icon), it is particularly effective for mobile phones with limited display areas.

  In the above description, the case where there are a plurality of types (elements) in the physical layer and the application layer has been described. However, the logical layer, for example, UDF and FAT (File Allocation Table) may be supported. In addition, it may be adapted to support 2 × speed or 4 × speed. In addition, the elements of each of a plurality of layers more than two layers may be displayed as one, not limited to the two layers of the physical layer and the application layer.

  Furthermore, for example, the present invention can be applied to a case where firmware versions stored in a memory built in the control unit 21 of the photographing apparatus 11 are different. In this case, when the firmware is updated by the communication unit 31 via the network or when the firmware is updated from the optical disc 25 via the drive 24, the detailed information of the memory may be updated at the same time.

  In the above description, the DVD as the optical disc 25 has been described. However, the present invention is not limited to the DVD, but can be applied to an HDD, a flash memory, a memory stick (registered trademark), or the like.

  The series of processes described above can be executed by hardware or can be executed by software. In this case, for example, the photographing apparatus 11 in FIG. 2 is configured by a photographing apparatus 101 as shown in FIG.

  In FIG. 14, a CPU (Central Processing Unit) 111 performs various processes according to a program stored in a ROM (Read Only Memory) 112 or a program loaded from a storage unit 119 to a RAM (Random Access Memory) 113. Execute. The RAM 113 also stores data necessary for the CPU 111 to execute various processes as appropriate.

  The CPU 111, ROM 112, and RAM 113 are connected to each other via a bus 114. An input / output interface 115 is also connected to the bus 114.

  The input / output interface 115 includes a camera unit 116 for photographing a subject, an input unit 117 including a cross key and a touch panel, a display including an LCD (Liquid Crystal Display), an output unit 118 including a speaker, and a recording unit 119. A communication unit 120 including a modem and a terminal adapter is connected. The communication unit 120 performs communication processing via a bus or a network (not shown).

  In addition, a drive 130 is connected to the input / output interface 115 as necessary, and a magnetic disk 131, an optical disk 132, a magneto-optical disk 133, a semiconductor memory 134, or the like is appropriately mounted, and a computer program read therefrom is necessary. Is installed in the storage unit 119 accordingly.

  When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a network or a recording medium into a general-purpose personal computer or the like.

  As shown in FIG. 14, the recording medium is distributed to provide a program to the user separately from the apparatus main body, and a magnetic disk 131 (including a flexible disk) on which the program is recorded, an optical disk 132 (CD -Contained by a package medium comprising a ROM (compact disk-read only memory), a DVD (digital versatile disk), a magneto-optical disk 133 (including MD (mini-disk) (trademark)), or a semiconductor memory 134 In addition, it is configured by a ROM 112 storing a program, a storage unit 119, and the like provided to the user in a state of being incorporated in the apparatus main body in advance.

  In the present specification, the step of describing the program recorded in the recording medium is not limited to the processing performed in time series according to the described order, but is not necessarily performed in time series, either in parallel or individually. The process to be executed is also included.

It is a figure which shows the example of the conventional display screen. It is a figure which shows the structural example of the imaging device to which this invention is applied. It is a figure explaining the data hierarchical structure of the imaging device of FIG. 3 is a flowchart for explaining display control processing of the photographing apparatus in FIG. 2. It is a figure explaining the disk profile of an optical disk. It is a flowchart explaining the format identification process of step S4 of FIG. It is a figure explaining the structural example of the logical format of an optical disk. It is a figure explaining the recording procedure of the INC system in VF. It is a figure explaining the recording procedure of the ROW system in VF. It is a figure which shows the example of the display screen of the imaging device of FIG. 6 is a flowchart for explaining another example of display control processing of the photographing apparatus of FIG. 2. It is a figure which shows the structural example of the database of the imaging device of FIG. It is a figure which shows the other example of the display screen of the imaging device of FIG. It is a figure which shows the other structural example of the imaging device to which this invention is applied.

Explanation of symbols

11 photographing device, 21 control unit, 24 drive, 25 optical disc, 27 GUI generation unit, 28 output control unit, 29 LCD, 30 operation input unit, 31 communication unit

Claims (4)

In a logical format identification method for identifying a logical format of an optical recording medium,
Information used for generating management information of data recorded on the optical recording medium during the end process for making the optical recording medium reproducible by a reproducing apparatus, the information being recorded on the optical recording medium been temporarily temporary-management information which is management information of title information of the content, and temporary management information determination step of determining whether or not recorded on the optical recording medium,
If it is determined that the temporary management information is not recorded on the optical recording medium, a root directory determination step of determining whether a root directory of the file system of the optical recording medium exists;
When it is determined that the root directory exists, a predetermined file determination step of determining whether a predetermined file exists in the root directory,
A logical format identification method for identifying a logical format of the optical recording medium based on the determination result. The optical recording medium is either a DVD-R (Digital Versatile Disk Recordable) or a DVD-RW (Digital Versatile Disk Re-recordable),
2. When the temporary management information determination step determines that the temporary management information is recorded on the optical recording medium, the logical format of the optical recording medium is identified as VF (Video Format Recording). The logical format identification method described in 1. The optical recording medium is either a DVD-R (Digital Versatile Disk Recordable) or a DVD-RW (Digital Versatile Disk Re-recordable),
2. The method according to claim 1, wherein when the predetermined file determining step determines that a predetermined file exists in a root directory of the optical recording medium, the logical format of the optical recording medium is identified as VR (Video Recording Format). Logical format identification method. When the predetermined file to the root directory is determined not exist, the logical format identification method of claim 1, further comprising a blank disc determining step said optical recording medium is determined whether or not a blank disc.

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