WO2010050050A1

WO2010050050A1 - Recording medium playback apparatus, recording medium playback method, recording medium playback program and recording medium for storing recording medium playback program

Info

Publication number: WO2010050050A1
Application number: PCT/JP2008/069901
Authority: WO
Inventors: 啓介岩田; 悠希沓澤
Original assignee: パイオニア株式会社
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2010-05-06

Abstract

[PROBLEMS] A recording medium playback device, a recording medium playback method, a recording medium playback program and a recording medium for storing the recording medium playback program which do not cause a user to be bored while the user awaits for restart of playback of a recording medium on which data of a content and byte codes relevant to the data are recorded. [MEANS FOR SOLVING PROBLEMS] In the case of a disk on which data of a content and byte codes relevant to the data are recorded, during playback, the data are reproduced and outputted while the reproduced data are also stored into a flash memory (11), and when the playback is interrupted, the interrupted position is stored into a microcomputer (13) and at the same time, the storage to the flash memory (11) is also interrupted, and upon the restart of the playback, the data stored within the flash memory (11) are read out for output while the interrupted position is being searched (resumed).

Description

Recording medium reproducing apparatus, recording medium reproducing method, recording medium reproducing program, and recording medium storing recording medium reproducing program

The present invention relates to a recording medium reproducing apparatus, a recording medium reproducing method, a recording medium reproducing program, and a recording medium storing a recording medium reproducing program, which reproduce a recording medium in which content data and bytecode related to the data are recorded.

Conventionally, a so-called resume function for temporarily stopping playback during playback of content such as music and movies recorded on a recording medium such as an optical disk with a playback device, and restarting playback from the interrupted position when restarting playback thereafter. Many playback devices are equipped with. This type of resume function is realized, for example, by storing an address in a recording medium at a position where reproduction is interrupted, and directly reading the address when reproduction is resumed.

In recent years, content data and byte codes related to the data are recorded on a recording medium, for example, BD-J defined in the Blu-ray Disc standard, and the byte code is converted into a program and reproduced by the program. An optical disc format that controls interactive content is proposed, and Patent Document 1 describes a playback device that supports such an optical disc.
JP 2006-294139 A

A recording medium in which content data and a byte code related to the data such as BD-J described above are recorded is controlled to be played back by a program in which the byte code is converted. It is difficult to directly read the content data by directly specifying the address of the recording medium. To resume playback, first read the byte code, convert it to a program, and then skip chapters and fast forward to the interrupted position. It was necessary to search by doing. That is, it has been difficult to realize a resume function that has been performed in the past on a recording medium on which content data and a bytecode related to the data are recorded.

The search for performing chapter skip and fast forward after converting the above bytecode into a program has been manually performed by the user in the past, but it is possible to store the position where playback was interrupted, so chapter skip or fast forward etc. It is possible to resume reproduction from the position where reproduction was interrupted by automation. However, in this case, there is a problem that the user is bored and inconvenienced because it takes a long time to load the program and fast-forwarding operation and the waiting time until the playback is resumed becomes long. .

Accordingly, the present invention provides a recording medium reproducing apparatus, a recording medium reproducing method, and a recording medium that do not bore the user during a waiting time when resuming reproduction of the recording medium in which the content data and the bytecode related to the data are recorded. It is an object to provide a recording medium storing a reproduction program and a recording medium reproduction program.

In order to solve the above-described problem, the recording medium playback apparatus according to claim 1 is capable of reading the data and the bytecode from a recording medium on which content data and a bytecode related to the data are recorded. A recording medium playback apparatus comprising: means for converting the bytecode into the data control program; and playback means for playing back the data based on the control program. Storage means for storing the reproduced data, reproduction position storage means for storing the reproduction position of the recording medium when the reproduction means interrupts reproduction, and the reproduction position storage means Search means for searching to a position; and when the reproduction of the recording medium is resumed, the conversion means converts the byte code into the control program. While to search until al wherein the reproduction position storage means to the search means has storage locations, and characterized in that and a resumption control means for reproducing the data stored in the storage unit to the reproducing means.

The recording medium reproduction method according to claim 8, wherein the data and the byte code are read from a recording medium on which content data and a byte code related to the data are recorded, and the byte code is read from the data control program. A recording medium reproduction method for reproducing the data based on the control program and storing the reproduced data when reproducing the content and interrupting reproduction when the content is reproduced When the reproduction of the recording medium is resumed, the stored byte code is converted into the control program, and the stored data is reproduced while searching for the stored reproduction position.

The recording medium reproduction program according to claim 9, wherein the data and the byte code are read from a recording medium in which content data and a byte code related to the data are recorded, and the byte code is stored in the byte code. A recording medium playback program for causing a computer to function as a conversion means for converting to a data control program and a playback means for playing back the data based on the control program, and when the playback means plays back, A storage means for storing the already-completed data, a playback position storage means for storing the playback position of the recording medium when the playback means interrupts playback, and a search for searching to a position stored by the playback position storage means And converting the bytecode into the control program in the converting means when reproduction of the recording medium is resumed The computer is functioned as restart control means for causing the reproduction means to reproduce the data stored in the storage means while the search means is made to search to the position stored in the reproduction position storage means. It is characterized by.

1 is a block diagram of an optical disk reproducing apparatus according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram showing a data structure of a recording medium on which content data to be played back by the optical disc playback apparatus shown in FIG. 1 and a byte code related to the data are recorded. 2 is a flowchart showing an operation of storing data being played back by the optical disc playback apparatus shown in FIG. 1 in a flash memory. FIG. 2 is an explanatory diagram showing an image stored in a flash memory of the optical disk playback device shown in FIG. 1. 2 is a flowchart showing an operation of reading from a flash memory of the optical disk reproducing device shown in FIG. 2 is a flowchart showing an operation of reading from a flash memory of the optical disk reproducing device shown in FIG. It is explanatory drawing which showed the storage image to the flash memory of the optical disk reproducing | regenerating apparatus concerning the 2nd Embodiment of this invention. 10 is a flowchart showing an operation of storing data being played back by the optical disc playback apparatus according to the second embodiment of the present invention in a flash memory.

Explanation of symbols

1 Optical disk playback device (recording medium playback device)
11 Flash memory (storage means)
13 Microcomputer (reproduction position storage means, restart control means)
17 Optical disc (recording medium)
20 Playback section (reading means, playback means, search means)

Hereinafter, a recording medium playback apparatus according to an embodiment of the present invention will be described. A recording medium playback apparatus according to an embodiment of the present invention stores content data that has been played back by a playback unit in a storage unit during playback of a recording medium on which content data and a bytecode related to the data are recorded. In addition, when the playback is interrupted, the position where the playback is interrupted is stored in the playback position storage means, and when the playback is resumed after the interruption, the restart control means while the search means searches to the position stored in the playback position storage means Since the reproduced content data stored in the storage means is reproduced by the reproducing means, the data reproduced in the past can be reproduced during the waiting time until resumption of reproduction, and the user is not bored.

Further, the storage means may store content data that is traced back a predetermined time from the content data that is being played back by the playback means. By doing so, it is possible to view the content after resumption after confirming the content immediately before the interruption during the search.

The restart control means estimates the time required for the search means to search to the position stored by the reproduction position storage means, and causes the reproduction means to reproduce from a position that is back by the estimated time from the position where the reproduction was interrupted. Also good. By doing so, it is possible to reproduce only the necessary amount when the data stored in the storage means is longer than the time required for the search, and it is possible to resume the reproduction continuously without a sense of incongruity.

Further, when the content divided into a plurality of units is recorded on the recording medium, the storage means may store data for a predetermined time predetermined for each of the plurality of units. In this way, for example, a predetermined time from the beginning of a plurality of chapters can be stored in the storage means, and it can be played back sequentially, so after checking the outline of the part played back during the search, Content can be viewed.

Further, the restart control means may reproduce the information stored in the storage means in time series. In this way, for example, by reproducing a plurality of chapters in time series, it is possible to view the resumed content after confirming the outline of the portion reproduced in the past.

Further, the restart control means may cause the reproduction means to reproduce the data stored in the storage means as a moving image or a still image. In this way, for example, a slide show display can be performed as a still image in addition to playing a moving image.

Further, when the amount of data stored in the storage unit is equal to or less than a predetermined amount, the restart control unit may cause the reproduction unit to reproduce the data stored in the storage unit as a still image. In this way, if the data stored in the storage means is small and if it is reproduced as a moving image, it will be shorter than the search time, a still image slide show can be displayed to prevent the user from being bored during the search time. .

Also, a recording medium playback method according to an embodiment of the present invention stores content data that has already been played back during playback of a recording medium on which content data and bytecode related to the data are recorded, and interrupts playback. Sometimes the location where playback was interrupted is stored, and the stored content data is being played back while searching to the location stored when restarting playback after the interruption. Data that has been played back in time can be played back, and the user is not bored.

The recording medium playback program according to an embodiment of the present invention stores the content data that has been played back by the playback means in the storage means during playback of the recording medium on which the content data and the bytecode related to the data are recorded. In addition, when playback is interrupted, the position at which playback was interrupted is stored in the playback position storage means, and when playback is resumed after interruption, the search means resumes while searching to the position stored in the playback position storage means. Since the control means causes the reproduction means to reproduce the data of the reproduced content stored in the storage means, the data reproduced in the past can be reproduced during the waiting time until resumption of reproduction, and the user is bored. Absent.

Further, the above-described recording medium reproduction program may be stored in a computer-readable recording medium. In this way, the recording medium playback program can be distributed alone, in addition to being incorporated into the device, and version upgrades can be easily performed.

An optical disc playback apparatus 1 as a recording medium playback apparatus according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the optical disk reproducing apparatus 1 includes a disk motor 2, an optical pickup 3, a carriage motor 4, a lead screw 5, an RF amplifier 6, a servo signal processing unit 7, a driver 8, a sound / The video signal processing unit 9, the memory 10, the DA converter 12, the microcomputer 13, the audio signal / video signal output terminal 14, the operation unit 15, and the display unit 16 are provided. Such a recording medium on which content data and a bytecode related to the data are recorded, and a recording medium other than that (for example, a normal DVD-video or a BD-video) can be reproduced.

The disc motor 2 is a motor for rotating the optical disc 17 set in the optical disc reproducing apparatus 1, and is constituted by a spindle motor or the like.

The optical pickup 3 includes a laser diode that generates laser light to be applied to the optical disc 17, an objective lens for condensing the laser light from the laser diode on the optical disc 17, and a focus direction and a signal from the servo signal processing unit 7. Photodiode including an actuator for driving the objective lens in the tracking direction and a photodiode that receives the reflected light reflected from the optical disc 17, an optical system that guides the laser light to the objective lens, and guides the reflected light to the light receiver. From this output, an RF signal including a track data such as video and music recorded on the optical disc 17, a focus error signal, a tracking error signal, and the like are generated and output to the RF amplifier 6.

The carriage motor 4 is a motor for moving the optical pickup 3 in the radial direction of the optical disc 17 through a lead screw 5 which will be described later, and includes a stepping motor or the like.

The lead screw 5 is formed in a columnar shape, and a thread groove and a thread are formed on the outer peripheral surface thereof, and is installed in parallel with the radial direction of the optical disc 17. The lead screw 5 is mechanically connected to the rotation shaft of the carriage motor 4 and rotates in accordance with the rotation of the carriage motor 4. The screw groove and screw thread of the lead screw 5 are engaged with a screw thread and screw groove (not shown) formed in the optical pickup 3, and the optical pickup 3 moves along the radial direction of the optical disk 17 by rotating the lead screw 5. To do.

The RF amplifier 6 amplifies the signal input from the optical pickup 3 to a predetermined value and outputs it to the servo signal processing unit 7.

The servo signal processing unit 7 controls the focus and tracking by driving the actuator of the optical pickup 3 based on control signals such as a focus error signal and a tracking error signal input from the RF amplifier 6, and is recorded on the optical disc 17. To read the information correctly. Further, the level of the input focus error signal is output to the microcomputer 13. Further, an RF signal including video and music recorded on the optical disc 17 is converted from analog to digital and output to the audio / video signal processing unit 9.

The driver 8 generates and outputs drive signals to the disk motor 2 and the actuator 3b of the optical pickup 3 and the carriage motor 4 from the signal input from the servo signal processing unit 7.

The audio / video signal processing unit 9 performs error correction on the signal input from the servo signal processing unit 7, then performs demodulation and decoding, and outputs the result to the memory 10. Then, it is read from the memory 10 in accordance with a request from the microcomputer 13 and output to the DA converter 12.

The memory 10 is a memory for temporarily storing a predetermined amount (several seconds to about 10 seconds) of data such as audio reproduced by the audio / video signal processing unit 9, and is composed of a semiconductor memory.

The flash memory 11 as a storage means is a memory that stores a predetermined amount (for example, about 1 minute) of data such as audio reproduced by the audio / video signal processing unit 9, and is configured by a nonvolatile memory. The audio / video signal processing unit 9 reads out and outputs the data stored in the flash memory 11 during a resumption time (waiting time until resumption of reproduction), which will be described later. Note that the writing to the flash memory 11 may be performed simultaneously with the writing to the memory 10 or at the time of reading from the memory 10 (at the time of output to the DA converter 12).

The DA converter 12 receives data stored in the memory 10 or the flash memory 11, converts the digital signal data into an analog signal, and outputs the analog signal from the audio signal / video signal output terminal 14.

The microcomputer 13 serving as conversion means, reproduction position storage means, and restart control means includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory). The entire optical disc playback apparatus 1 is controlled in each operation such as ejection, playback, stop and track search. Further, in the case of a disc on which content data and a byte code related to the data are recorded, the microcomputer 13 reads the byte code and converts it into a control program. Further, the audio / video signal processing unit 9 is instructed to read data from the flash memory 11 at the time of resume, and is reproduced during the search period of the optical pickup 3 or the like.

The operation unit 15 is composed of, for example, a plurality of buttons or a remote controller provided on the front surface of the optical disc playback apparatus 1 and the user performs various operations on the optical disc playback apparatus 1 and sends operation commands corresponding to the operations to the microcomputer 13. Output to.

The display unit 16 is composed of, for example, a liquid crystal display or a fluorescent display tube, and displays the operating state of the optical disc playback apparatus 1 and the track number being played back.

Here, the disc motor 2, the optical pickup 3, the carriage motor 4, the lead screw 5, the RF amplifier 6, the servo signal processing unit 7, the driver 8, and the audio / video signal processing unit 9 serve as reading means, reproducing means, and searching means. The playback unit 20 is configured.

Next, the data structure of the optical disc 17 will be described with reference to FIG. FIG. 2 is a diagram showing a data structure of the optical disc 17 and is composed of an Index, a Movie Object, a Program Object, a PlayList or PlayItem, and a ClipInformation or Clip.

Index is the original data for managing the optical disc 17, and manages the correspondence with Movie Object and Program Object described later. Movie Object is composed of a navigation command for managing information of PlayList or PlayItem, and the content is reproduced according to this command. The Program Object includes a byte code of an application program (control program) for controlling playback such as PlayList or PlayItem. The difference between Movie Object and Program Object is that Movie Object is made by the description of navigation commands as statements that specify PlayList, PlayItem, etc., but Program Object is an execution form between an application program and a programming language. This is done by describing a byte code that is an intermediate code. During playback, when using Movie Object, the playback device interprets and plays back the navigation command read from the recording medium, but when using Program Object, the playback device compiles the byte code to create the application program. Content is reproduced based on this program generated and generated in the memory in the reproduction apparatus. Therefore, when Program Object is used, it is possible to perform various operations by improving the interactivity of the contents as compared with the prior art by using an application program in which byte code is compiled.

PlayList or PlayItem is a collection of playback sections of content data. That is, ClipInformation or Clip information of the playback section is included. ClipInformation or Clip includes content data itself (that is, video data or audio data).

In this embodiment, first, when the optical disc 17 is a recording medium on which content data and a byte code related to the data are recorded, the audio / video signal processing unit 9 reproduces the data in the memory 10 during the reproduction. Data is stored and also stored in the flash memory 11. When the user operates the operation unit 15 to stop playback such as playback stop, the stop position (playback position when playback is interrupted) is stored in the microcomputer 13 and data to the flash memory 11 is stored. Stop storing. This stop position uses, for example, a chapter number and time. Thereafter, when resuming the reproduction by the resume operation, the microcomputer 13 converts the read byte code into an application program, and causes the application program to skip to the chapter and to fast-forward to the resume location in the chapter. At the same time, the audio / video signal processing unit 9 of the reproduction unit 20 is instructed to read out and output the data stored in the flash memory 11. Since the flash memory 11 stores about one minute of data immediately before the interruption of reproduction, the data stored in the flash memory 11 is reproduced during the search. The operation of storing the data being reproduced in the flash memory 11 is shown in the flowchart of FIG. The flowchart of FIG. 3 is executed by the CPU of the microcomputer 13.

First, in step S101, it is determined whether or not it is immediately after the end of the search by the resume operation. If it is immediately after the end of the search (in the case of Yes), the process proceeds to step S102, and if not (in the case of No), the process proceeds to step S103. .

Next, in step S102, all the data on the flash memory 11 is deleted, and the process proceeds to step S103. That is, the flash memory 11 is initialized.

Next, in step S103, it is determined whether or not playback is in progress. If playback is in progress (Yes), the process proceeds to step S104. If playback is not in progress (No), the process ends.

Next, in step S104, it is determined whether or not there is an empty area in the flash memory 11. If there is an empty area (Yes), the process proceeds to step S105. If there is no empty area (No), step S106 is performed. Proceed to

Next, in step S105, the reproduction data is saved (stored) in an empty area of the flash memory 11, and the process proceeds to step S108.

On the other hand, in step S106, the oldest data on the flash memory 11 is deleted, and the process proceeds to step S107.

Next, in step S107, the reproduction data is saved (stored) in the empty area deleted in step S106, and the process proceeds to step S108.

Next, in step S108, it is determined whether or not the reproduction is interrupted, and if the reproduction is interrupted (in the case of Yes), the process ends. If the reproduction is not interrupted (in the case of No), the process returns to step S104. Therefore, by executing this flowchart, content data for a predetermined time immediately before the reproduction means interrupts reproduction is stored. The predetermined time period is at least the time required for the search to the position where the reproduction is interrupted, and is stored for about one minute in this embodiment.

In this embodiment, if there is an empty area in the flash memory 11, data may be sequentially stored in the empty area as shown in FIG. 4A, but if there is no empty area in the flash memory 11, FIG. As shown in b), the old data (A, B) is deleted and new data (K, L) is stored in that portion. In the flowchart of FIG. 3, the data is once deleted, but may be overwritten.

Next, the data is read from the flash memory 11. As described above, the oldest data among the data stored in the flash memory 11 may be read sequentially. However, as shown in FIG. Depending on the amount of stored data, it may be switched between reading sequentially from old data or displaying thumbnails.

FIG. 5 is a flowchart showing a resume search after the microcomputer 13 converts the byte code read from the optical disc 17 into the application program when reproduction is resumed. The flowchart shown in FIG. 5 is also executed by the CPU of the microcomputer 13. First, a resume search is started in step S201, and the process proceeds to step S202. The resume search indicates a search operation up to a resume position in resume (resume) after interruption of reproduction. Specifically, the reproduction unit 20 such as the optical pickup 3 is controlled so as to read out the stop position stored in the microcomputer 13 and read out data at that position. Next, in step S202, it is determined whether or not data of one minute or more is stored in the flash memory 11. If stored, the process proceeds to step S203, and if not stored, the process proceeds to step S204. In step S203, data is stored in the flash memory 11 for one minute or longer, so the oldest data is sequentially read out and transferred to the audio / video signal processing unit 9. On the other hand, in step S204, since no data is stored in the flash memory 11 for one minute or longer, a slide show display is performed in which an arbitrary frame is read out from the stored data as a still image and displayed as a thumbnail image at predetermined time intervals. That is, the content data stored in the flash memory 11 is played back while the playback unit 20 searches to the position stored in the microcomputer 13.

Further, as shown in FIG. 6, the time required for the resume search (return time) may be calculated in advance from the stop position and the like, and data may be read sequentially from the data traced back by that time. For example, at a certain stop position, if it takes 45 seconds to load an application program, 2 seconds to track search, and 3 seconds to fast-forward, the total time is 50 seconds, so the flash memory 11 stores 1 minute of data. If this is the case, skip 10 seconds from the oldest data and read the remaining 50 seconds.

The flowchart shown in FIG. 6 will be described. First, a resume search is started in step S301, and the process proceeds to step S302. Next, in step S302, it is determined whether or not data longer than the return time is stored in the flash memory 11. If stored, the process proceeds to step S303, and if not stored, the process proceeds to step S304. In step S303, since data is stored in the flash memory 11 for the return time or longer, data is read sequentially from the data backed by the return time and transferred to the audio / video signal processing unit 9. On the other hand, in step S304, since no data is stored in the flash memory 11 for the return time or longer, a slide show display is performed in which an arbitrary frame is read from the stored data as a still image and displayed as a thumbnail image at predetermined time intervals. .

According to the present embodiment, when the optical disc 17 is a disc on which content data and a byte code related to the data are recorded, the reproduced data is output during reproduction and the reproduced data is also reproduced in the flash memory 11. When the playback is interrupted, the interrupted position is stored in the microcomputer 13 and the storage in the flash memory 11 is also interrupted. When the playback resumes, the byte code is converted into an application program. Then, during the search (resume) to the interrupted position, the data stored in the flash memory 11 is read and output, so that the byte code recorded in the flash memory 11 is converted into a program and the application program Time to resume playback like a disc whose playback is controlled by If Cal recording medium, eliminated is possible to bore the user it is possible to reproduce the data reproduced in the past.

In addition, during the search, data is played back one minute before the playback is interrupted and the time required for the search, so that the content watched immediately before can be confirmed, especially for the time required for the search. If data is played back, even if the search is completed within 1 minute, playback can be continued for 1 minute, and playback can be resumed continuously without a sense of incongruity without the data being skipped from the middle to the interruption position. .

In addition, when the data stored in the flash memory 11 is small, a still image slide show is displayed, so that the data viewed immediately before can be confirmed even with a small amount of data.

The determination that the optical disc 17 is a recording medium on which content data and a bytecode related to the data are recorded is, for example, whether content data is read first when the optical disc 17 is read, or If information indicating whether or not the byte code is being read or information indicating that the content data and the byte code related to the data are recorded on the optical disc 17 is recorded (for example, the byte code is stored) The presence or absence of a file or directory, etc.) may be determined at the time of the first reproduction and stored in the microcomputer 13. Then, referring to the determination result before execution of the flowchart of the present embodiment, if it is determined that the content data and the byte code related to the data are recorded, the flowchart of the present embodiment may be performed. .

Next, an optical disk reproducing apparatus 1 according to a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, the block configuration is the same as in the first embodiment, but the method for storing the data being reproduced in the flash memory 11 is different. In the present embodiment, in the case of content composed of a plurality of chapters as a plurality of units, a predetermined time from the beginning of each chapter is stored in the flash memory 11. For example, assuming that chapter 1 is composed of data A1 to A17, chapter 2 is composed of B1 to B13, and chapter 3 is composed of data C1 to C11 as shown in FIG. 7A, chapter 1 is composed as shown in FIG. 7B. During playback, data from A1 to A5 is recorded for a predetermined time, data from B1 to B5 is recorded during playback of chapter 2, and data from C1 to C5 is also recorded during playback of chapter 3. Record. That is, data for a predetermined time set in advance for each of a plurality of units is stored. For example, when the reproduction is interrupted with the data C10 of the chapter 3, the data A1 to the data C5 are sequentially reproduced at the time of searching for the resume. That is, the data stored in the flash memory 11 is reproduced in time series. A method of storing the data being reproduced in the flash memory 11 in this embodiment is shown in the flowchart of FIG.

First, in step S401, it is determined whether or not it is immediately after the start of reproduction of the title. If it is immediately after the reproduction is started (in the case of Yes), the process proceeds to step S402. Otherwise (in the case of No), the process proceeds to step S403. The title is content such as a movie composed of a plurality of chapters, for example. That is, it is determined whether or not a new disk is played and playback is started from the beginning.

Next, in step S402, all the data on the flash memory 11 is deleted, and the process proceeds to step S403. That is, the flash memory 11 is initialized.

Next, in step S403, it is determined whether or not playback is in progress. If playback is in progress (Yes), the process proceeds to step S404, and if playback is not in progress (No), the process ends.

Next, in step S404, it is determined whether or not there is a free area in the flash memory 11. If there is a free area (Yes), the process proceeds to step S405, and if there is no free area (No). finish.

Next, in step S405, the reproduction data is stored (stored) in the flash memory 11 for X seconds as a predetermined time, and the process proceeds to step S406. That is, X seconds from the beginning of the first chapter are stored in the flash memory 11. The X seconds may be determined in advance in consideration of the capacity of the flash memory 11 and the number of chapters of the disc to be played back.

Next, in step S406, it is determined whether or not the chapter has changed. If it has changed (in the case of Yes), the process proceeds to step S407, and if it has not changed (in the case of No), the process waits in this step.

Next, in step S407, it is determined whether or not there is an empty area after the data for X seconds of the previous chapter stored in the flash memory 11, and if there is an empty area (in the case of Yes), the process proceeds to step S408. If there is no free area (No), the process proceeds to step S409.

Next, in step S408, the reproduction data is stored (stored) for X seconds following the previous chapter data in the flash memory 11, and the process proceeds to step S411.

On the other hand, in step S409, the data of the oldest chapter in the flash memory 11 is deleted, and the process proceeds to step S410.

Next, in step S410, the reproduction data is stored (stored) for X seconds in the area where the data was deleted in step S409, and the process proceeds to step S411.

Next, in step S411, it is determined whether or not the reproduction is interrupted. If the reproduction is interrupted (in the case of Yes), the process ends. If the reproduction is not interrupted (in the case of No), the process returns to step S406.

According to this embodiment, since X seconds from the beginning of each of the plurality of chapters is stored in the flash memory 11, X seconds from the beginning of each chapter can be sequentially reproduced during the search, and during the search, You can check the outline of the part played back in the past.

In the above-described embodiment, X seconds are from the beginning of the chapter, but it is not limited to the beginning and may be X seconds from an arbitrary position.

In the above-described embodiment, the slide show display of still images is performed when the capacity of the flash memory 11 is small. However, the present invention is not limited to this, and the slide show display may be performed from the beginning.

In the above-described embodiment, the data stored in the flash memory 11 is reproduced in chronological order (time series), but may be reproduced randomly for each chapter instead of time series.

According to the above-described embodiment, the following optical disc playback apparatus 1, recording medium playback method, and recording medium playback program can be obtained.

(Additional remark 1) The reproducing part 20 which can read data and a byte code from the optical disk 17 in which the data of the content and the byte code regarding the data were recorded,
A microcomputer 13 for converting the bytecode into a data control program;
An optical disc playback apparatus 1 including a playback unit 20 for playing back data based on a control program,
A flash memory 11 for storing reproduced data when the reproducing unit 20 reproduces;
A microcomputer 13 for storing the reproduction position of the optical disc 17 when the reproduction unit 20 interrupts reproduction;
A playback unit 20 for searching to a position stored in the microcomputer 13;
When the reproduction of the optical disk 17 is resumed, the microcomputer 13 converts the byte code into a control program, and then causes the reproduction unit 20 to search to the position stored in the microcomputer 13, while the data stored in the flash memory 11 is reproduced by the reproduction unit. An optical disk reproducing apparatus 1 comprising a microcomputer 13 that causes the computer 20 to reproduce data.

According to this optical disk reproducing apparatus 1, data reproduced in the past can be reproduced during the waiting time until resumption of reproduction, so that the user is not bored.

(Supplementary note 2) The data and byte code are read from the optical disc 17 in which the content data and the byte code relating to the data are recorded, the byte code is converted into a data control program, and the data is reproduced based on the control program. A recording medium playback method for
When reproducing the content, the reproduced data is stored, when the reproduction is interrupted, the reproduction position of the optical disk 17 is stored, and when the reproduction of the optical disk 17 is resumed, the byte code is converted into a control program and stored. A recording medium playback method, wherein stored data is played back while searching to a playback position.

According to this recording medium reproduction method, data reproduced in the past can be reproduced during the waiting time until resumption of reproduction, so that the user is not bored.

(Additional remark 3) The reproducing part 20 which can read data and a byte code from the optical disk 17 in which the data of the content and the byte code regarding the data were recorded,
A microcomputer 13 for converting the bytecode into a data control program;
A recording medium reproduction program for causing a computer to function as a reproduction unit 20 for reproducing data based on a control program,
A flash memory 11 for storing reproduced data when the reproducing unit 20 reproduces;
A microcomputer 13 for storing the reproduction position of the optical disc 17 when the reproduction unit 20 interrupts reproduction;
A playback unit 20 for searching to a position stored in the microcomputer 13;
When the reproduction of the optical disc 17 is resumed, the microcomputer 13 converts the byte code into a control program, and then causes the reproduction unit 20 to search to the position stored in the microcomputer 13, while the data stored in the flash memory 11 is reproduced. 20. A recording medium reproduction program for causing a computer to function as a microcomputer 13 to be reproduced by 20.

According to this recording medium reproduction program, data reproduced in the past can be reproduced during the waiting time until resumption of reproduction, so that the user is not bored.

It should be noted that the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

Claims

Reading means capable of reading the data and the bytecode from a recording medium in which content data and a bytecode related to the data are recorded;
Conversion means for converting the bytecode into the data control program;
A recording medium playback device comprising playback means for playing back the data based on the control program,
Storage means for storing the reproduced data when the reproducing means reproduces;
Playback position storage means for storing the playback position of the recording medium when the playback means interrupts playback;
Search means for searching to the position stored by the reproduction position storage means;
When resuming reproduction of the recording medium, the conversion unit stores the storage unit in the storage unit while the conversion unit converts the byte code into the control program and causes the search unit to search to the position stored in the reproduction position storage unit. A recording medium playback apparatus comprising: restart control means for causing the playback means to play back data.
2. The recording medium reproducing apparatus according to claim 1, wherein the storage means stores data of the content that is traced back a predetermined time from data of the content at the time of reproduction.
The resumption control means estimates the time required for the search means to search to the position stored by the reproduction position storage means, and sends the reproduction means to the reproduction means from a position that is back by the estimated time from the position where reproduction was interrupted. The recording medium reproducing apparatus according to claim 2, wherein the reproducing apparatus reproduces the recording medium.
When the content divided into a plurality of units is recorded on the recording medium, the storage means stores data for a predetermined time predetermined for each of the plurality of units. Item 4. A recording medium reproducing device according to Item 1.
5. The recording medium reproducing apparatus according to claim 4, wherein the restart control unit reproduces information stored in the storage unit in time series.
6. The recording medium reproduction according to claim 1, wherein the restart control unit causes the reproduction unit to reproduce the data stored in the storage unit as a moving image or a still image. apparatus.
The resumption control unit causes the reproduction unit to reproduce the data stored in the storage unit as a still image when the amount of data stored in the storage unit is equal to or less than a predetermined amount. The recording medium reproducing device according to claim 6.
The data and the byte code are read from a recording medium on which content data and a byte code related to the data are recorded, the byte code is converted into a control program for the data, and the data based on the control program A recording medium playback method for playing back
When reproducing the content, the reproduced data is stored, when reproduction is interrupted, the reproduction position of the recording medium is stored, and when the reproduction of the recording medium is resumed, the byte code is stored in the control program. A recording medium playback method, wherein the stored data is played back while searching for the stored playback position after conversion.
Reading means capable of reading the data and the bytecode from a recording medium in which content data and a bytecode related to the data are recorded;
Conversion means for converting the bytecode into the data control program;
A recording medium reproduction program for causing a computer to function as reproduction means for reproducing the data based on the control program,
Storage means for storing the reproduced data when the reproducing means reproduces;
Playback position storage means for storing the playback position of the recording medium when the playback means interrupts playback;
Search means for searching to the position stored by the reproduction position storage means;
When the reproduction of the recording medium is resumed, the conversion unit converts the byte code into the control program and then stores the search unit in the storage unit during the search to the position stored in the reproduction position storage unit. A recording medium reproduction program that causes the computer to function as a restart control unit that causes the reproduction unit to reproduce the data.
A computer-readable recording medium, wherein the recording medium reproduction program according to claim 9 is stored.