JP2009110598A - Recording apparatus and recording method - Google Patents

Abstract

It is possible to prevent noise due to a seek operation from being recorded and to quickly display a list of representative images.
An instruction for recording thumbnail data in an area adjacent to an area for recording stream data, an instruction to turn off the power of the video camera 100, an instruction to eject a disc 112, an instruction to shift to a playback mode, or a finalization process is provided. Prevents recording of noise due to seek operation by moving or duplicating thumbnail data to the reserved area of the thumbnail data file created when formatting is executed when there is an instruction to execute. In addition, a list of representative images can be quickly displayed.
[Selection] Figure 1

Description

  The present invention relates to a recording apparatus, a recording method, a program, and a storage medium, and more particularly, to a technique suitable for recording data on a randomly accessible disk-type recording medium.

  2. Description of the Related Art Conventionally, there is a moving image recording / reproducing apparatus that uses a disk type DVD or the like as a recording medium and records moving image data on the recording medium in real time. In such a moving image recording / reproducing apparatus, the recorded moving image data is MPEG2 or H.264. The data is encoded using an encoding method such as the H.264 method, and the data size is compressed and stored in a recording medium. In addition, when playing back the recorded moving image data, it is necessary to decode the compressed moving image data, and information such as the length of the moving image, the number of pixels, and the aspect ratio is separately managed for the moving image data. Recorded as information.

  In a device that reproduces the moving image data recorded in this way, first, management information is read from the recording medium, and the moving image data is reproduced based on the management information. Standards using such a method include DVD-Video standards, BD-ROM standards, and AVCHD standards.

  Further, as shown in FIG. 2, a method for displaying to the user what kind of moving image data is recorded on the recording medium by displaying a list of representative images of the plurality of moving image data recorded on the recording medium. There is. In this method, the first frame of each moving image data is read from the recording medium, decoded, and displayed as a list on the screen.

  On the other hand, a representative image of the moving image data is recorded in advance as still image data (hereinafter referred to as thumbnail data) separately from the moving image data, and a list of the still images is displayed to display any moving image on the recording medium. There is also a way to indicate to the user whether data is being recorded. In this method, first, management information of moving image data is read from the recording medium, and then thumbnail data corresponding to each moving image data is read from the recording medium. Then, the read thumbnail data is displayed as a list on the screen to notify the user what kind of moving image data is recorded on the recording medium. When a thumbnail of a moving image to be displayed is selected by the user, moving image data corresponding to the thumbnail is reproduced.

  Thus, since thumbnail data is created in advance, a method using thumbnail data can display a representative image at a higher speed when displaying a list than a method of decoding the first frame of moving image data. There is a feature. For example, Patent Document 1 discloses a technique for displaying a list of representative images at high speed by sequentially arranging attribute information such as recording time and title and thumbnail data in a single file. ing.

JP 2004-47064 A

  As a method for recording thumbnail data, there is a method in which representative image data (thumbnail data) for each moving image data (clip) recorded on a disc is recorded together in one file. Hereinafter, the files combined into one in this way are referred to as thumbnail data files.

  Since the thumbnail is a representative image of each moving image, when a normal recording method is taken into consideration, each time one moving image data is recorded, a stream data file, a management data file, and a thumbnail data file are recorded. There is a need to. In particular, since the thumbnail data file is recorded as one file, the file is additionally written. Therefore, when a recording medium such as a DVD or a hard disk is used, if recording of moving image data is repeated, the thumbnail data file forms a single file that is distributed and recorded on the disk. However, if the recording positions of the thumbnail data are dispersed, a seek operation or the like frequently occurs to read the thumbnail data. For this reason, there is a problem that the thumbnail list display is slow.

  Further, when the thumbnail data is arranged in a specific area using the method described in Patent Document 1, for example, when recording one moving image data, recording a stream data file, recording a management data file, A sequence of recording thumbnail data is taken. As a result, a seek for recording thumbnail data in a specific area occurs. Therefore, since noise due to mechanical operation is accompanied when a seek occurs, there is a problem that noise is recorded in an application such as a video camera.

  The present invention has been made in view of the above-described problems, and it is an object of the present invention to prevent a noise due to a seek operation from being recorded and to quickly display a list of representative images.

  The recording apparatus of the present invention is adjacent to a recording area for recording moving image data and representative image data of the moving image data on a disc-shaped recording medium, and a recording area for the moving image data according to the recording of the moving image data. The representative image data is recorded in an area, and is different from the area in which the representative image data is recorded on the disk-shaped recording medium in response to a predetermined instruction to finish recording the moving image data on the disk-shaped recording medium. And control means for controlling the recording means so as to record the recorded representative image data in one continuous area.

  The recording method of the present invention includes a recording step of recording moving image data and representative image data of the moving image data on a disc-shaped recording medium, and a recording area of the moving image data adjacent to the recording of the moving image data. The representative image data is recorded in an area, and is different from the area in which the representative image data is recorded on the disk-shaped recording medium in response to a predetermined instruction to finish recording the moving image data on the disk-shaped recording medium. And a control step for controlling processing in the recording step so as to record the recorded representative image data in one continuous area.

  The program of the present invention includes a recording step of recording moving image data and representative image data of the moving image data on a disc-shaped recording medium, and an area adjacent to the recording area of the moving image data according to the recording of the moving image data The representative image data is recorded on the disc-shaped recording medium, and in response to a predetermined instruction to end the recording of the moving image data on the disc-shaped recording medium, the area different from the area where the representative image data is recorded on the disc-shaped recording medium 1 And a control step of controlling the processing in the recording step so as to record the recorded representative image data in two continuous areas.

  The storage medium of the present invention stores the program described above.

  According to the present invention, representative image data is recorded in an area adjacent to the moving image data recording area in accordance with recording of moving image data. The recorded representative image data is recorded in one continuous area different from the area where the representative image data is recorded in response to a predetermined instruction to end the recording of the moving image data. As a result, when performing the recording process, it is possible to perform recording so that no seek occurs. Furthermore, when displaying a list of representative images, the list display can be quickly performed because the representative image data is collectively recorded in one continuous area.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, an example of a digital video camera capable of recording on a DVD-RW disc medium will be described.

FIG. 1 is a block diagram illustrating a configuration example of the video camera according to the present embodiment.
In FIG. 1, reference numeral 101 denotes a control unit that controls the entire video camera 100. A lens 102 can change the focal length and the state of the aperture. Reference numeral 103 denotes an image sensor made up of, for example, a CCD (Charge Coupled Device), which has a function of converting light imaged by the lens 102 into an electrical signal.

  A signal processing unit 104 performs predetermined signal processing such as white balance and gamma correction on the image signal output from the image sensor 103 and temporarily records it as moving image data in a memory 114 described later. 105 is H.H. H.264 encoding / decoding unit that converts the moving image data temporarily recorded in the memory 114 to H.264. Coding according to the H.264 system. H. The H.264 encoding / decoding unit 105 is an H.264 encoder. It also has a function of decoding moving image data encoded according to the H.264 system.

  A JPEG encoding / decoding unit 106 encodes still image data temporarily recorded in the memory 114 according to the JPEG method. The JPEG encoding / decoding unit 106 also has a function of decoding still image data encoded according to the JPEG method and recording it in the memory 114. Note that the JPEG encoding / decoding unit 106 also performs encoding / decoding of thumbnail data to be described later.

  Reference numeral 108 denotes a microphone, which has a function of converting sound into an audio signal. On the other hand, reference numeral 109 denotes a speaker, which has a function of converting an audio signal into audio, contrary to the microphone 108. An audio signal encoding / decoding unit 110 has a function of encoding an audio signal input from the microphone 108 into a predetermined code format and temporarily recording it in the memory 114. The audio signal encoding / decoding unit 110 also has a function of decoding an audio signal encoded in a predetermined code format held in the memory 114. As a code format, an AC3 (Audio Code number 3) system is used in this embodiment.

  Reference numeral 111 denotes a disk control unit as recording means, and reference numeral 112 denotes a DVD-RW disk as a disk-shaped recording medium. When performing the recording operation, the disk control unit 111 is configured to store the H.264 data stored in the memory 114. H.264 video data and audio data are multiplexed and recorded on the disk 112 as a stream data file. On the other hand, when performing the reproduction operation, the disc control unit 111 reads out the stream data file recorded on the disc 112, H.264 video data and audio data are separated and recorded in a predetermined area of the memory 114. The disk control unit 111 can also record and play back JPEG still image data and management data files on the disk 112.

  A flash memory 113 stores a program to be operated by the control unit 101 and stores various setting data. Further, the data recorded in the flash memory 113 is retained even when the power source of the video camera 100 is turned off. For this reason, the flash memory 113 holds management data and the like that need to be held even after the power is turned off. 114 is a memory. It functions as a buffer that holds H.264 moving image data, a buffer that holds audio data, a work memory, and the like.

  Reference numeral 115 denotes a display unit, which has a function as a display device that displays decoded video data under the control of the control unit 101, and also has a function as a viewfinder at the time of shooting. The display unit 115 also has a function as an operation screen when the user operates the video camera 100 main body. A data bus 116 accesses the functional blocks from the control unit 101 and transfers data between the functional blocks via the memory 114. Reference numeral 117 denotes an operation switch. When the user operates the operation switch 117, switching between a recording mode and a reproduction mode, switching power on / off, and the like are possible.

Next, an overview of the recording method of this embodiment will be described.
In the recording system of this embodiment, a unit of one moving image recorded between an instruction to start shooting and an instruction to stop shooting is called a clip. The clip is stream data that is moving image data and management of the moving image. It consists of two types of data, clip information that is data. Stream data and clip information exist as independent files, and one file is composed of two files. In addition, the same clip number is assigned to each of the stream data file and the clip information file so that they can be associated with each other. When shooting and recording a moving image with the video camera 100, one clip information file is recorded every time one stream data file is recorded.

  Further, in the recording method of the present embodiment, a playlist indicating the reproduction order of stream data is defined. The playlist is configured as an array of play items indicating a set of IN points and OUT points representing a certain range on the clip. For example, first, a play item is created with the beginning of each clip as the IN point and the end as the OUT point. Then, a play list configured by arranging these play items in the recorded order is created. By referring to the playlist, it is possible to reproduce all the clips recorded on the disc 112.

  Further, in the recording method of the present embodiment, the thumbnail data file is recorded on the disk 112. In this embodiment, the representative image for each play item is used as thumbnail data, and the thumbnail data for all play items recorded on the disc 112 is integrated and recorded in one thumbnail data file. Then, thumbnail data for one play item is recorded in a unit block of 16 Kbytes.

  The play item and the thumbnail data are associated by a thumbnail information file. Each play item includes identification information of thumbnail data, and the thumbnail information file includes a list in which the identification information of thumbnail data is associated with the recording position in the thumbnail data file. By referring to the thumbnail information file, it is possible to recognize where the corresponding thumbnail data is recorded in the thumbnail data file.

  The thumbnail data described above is used for display for discriminating the contents of play items recorded on a recording medium when used as a playback device. For example, as illustrated in FIG. 2, when a viewer selects thumbnails 201 displayed side by side, a moving image of a corresponding play item can be displayed. In other words, the play item can be selected by selecting the thumbnail.

  Next, a method for recording a file on the DVD-RW disc 112 in the video camera 100 of the present embodiment will be described with reference to FIGS. 3, 4, and 6.

FIG. 3 is a diagram showing an example of the structure of the recording area of the disk 112 in this embodiment.
When a blank disc is inserted into the video camera 100 of the present embodiment, the disc is first formatted (initialized) based on the logical format. In the format of this embodiment, a UDF (Universal Disc Format) management information file as a file system is recorded in the innermost area 301, and then a thumbnail data file is recorded in the adjacent area 302. At the time of formatting the disc, the thumbnail data file has a valid data (File Body) length of 0 and is recorded as a file having only a reserved area (File Tail).

FIG. 4 is a diagram showing a part of the UDF management information (File Entry) of the thumbnail data file.
As shown in FIG. 4, the thumbnail data file is composed of a set of allocation descriptors, and the number of allocation descriptors is calculated from the allocation descriptor length (8 per one).

  One allocation descriptor secures one continuous area (extent) on the disk as a file. Therefore, a file composed of a plurality of extents is represented by a plurality of allocation descriptors. In each allocation descriptor, an extent position (address), an extent length (size), and an attribute (File Body / File Tail) are recorded.

  In the state where the blank disc is formatted, the thumbnail data file is recorded as a file having only one allocation descriptor and including only a reserved area (File Tail), as shown in FIG. The size of the reserved area is 0x1000000, which is 16 MB. This is calculated from the maximum number of play items that can be recorded on a DVD-RW disc. Become.

FIG. 6 is a flowchart illustrating an example of a recording processing procedure in the present embodiment.
The recording process is started by starting shooting by a user operation. First, in step S601, the stream data file, thumbnail data, and clip information file are recorded on the disk 112.

  As a specific procedure, first, the signal processing unit 104 performs predetermined signal processing such as white balance and gamma correction on the image signal output from the image sensor 103. Then, a reduced version of the first frame as a representative image is stored in the memory 114 as thumbnail image data. At the same time, the signal processing unit 104 accumulates the moving image data in the memory 114, and stores the accumulated moving image data in the H.264 format. H.264 encoding / decoding unit 105 performs H.264 encoding. The video data is converted to H.264 video data and stored in the memory 114 again.

  On the other hand, the audio signal encoding / decoding unit 110 encodes the audio signal input from the microphone 108 by the AC3 method, and temporarily records it in the memory 114 as audio data.

  Next, when a certain amount of moving image data and audio data is accumulated in the memory 114, the disk control unit 111 multiplexes the moving image data and audio data accumulated in the memory 114 to form a stream data file. 112 is recorded. When shooting is temporarily stopped, the disc control unit 111 records all stream data remaining on the memory 114 on the disc 112 and completes the recording of the stream data file.

  Subsequently, the thumbnail image data stored in the memory 114 is encoded by the JPEG encoding / decoding unit 106 and converted into thumbnail data in the JPEG format. Then, the disc control unit 111 records the thumbnail data in the thumbnail data file on the disc 112 in an area 304 adjacent to the area 303 where the stream data file is recorded. The thumbnail data itself is recorded next to the area 303 in which the stream data file is recorded so that no seek occurs. However, the thumbnail data is managed as shown in FIG.

  As shown in FIG. 4B, the recording position of 16 Kbytes of thumbnail data newly recorded as valid data (File Body) is managed in the file entry for managing the thumbnail data file. Then, the reserved area (File Tail) is managed so as to indicate the area secured at the time of formatting. In this way, the thumbnail data and the reserved area secured in completely different areas on the disk 112 are recorded as one file called a thumbnail data file.

  Next, the disc control unit 111 records a clip information file corresponding to the recorded stream data file, following the thumbnail data. The clip information is updated at any time during moving image shooting. The clip information is not immediately recorded on the disk 112 but stored in the memory 114, and after the thumbnail data is recorded as described above, the clip information file is recorded. Is recorded on the disk 112.

  Other thumbnail information files and playlist files are not completed in one shooting unit, and the data size is not large, so they are not recorded on the disk 112 for each shooting. Until recording on the disk 112, thumbnail information data and playlist data are held on the memory 114 and recorded on the disk 112 at a timing described later.

Next, in step S602 in FIG. 6, the control unit 101 determines whether any of the following instructions (1) to (4) indicating that the recording process is to be ended has been issued from the operation switch 117.
(1) Instruction to turn off the power of the video camera 100 (2) Instruction to eject the disk 112 (3) Instruction to shift to the playback mode (4) Instruction to execute finalization processing

  As a result of the determination, if none of the above-described instructions (1) to (4) is given, the process proceeds to step S603. In step S603, the control unit 101 determines whether shooting has been resumed. If photographing is resumed as a result of this determination, the process returns to step S601, and stream data and the like are recorded according to the procedure described above. On the other hand, if the result of determination in step S603 is that photography has not been resumed, processing returns to step S602.

  When shooting is repeated, the stream data file, the thumbnail data, and the clip information file are recorded at any time in the outer peripheral direction as shown in FIG. In the UDF management, as shown in FIG. 4C, the thumbnail data is newly allocated between the valid data (File Body) of the thumbnail file and the reserved area (File Tail), and new allocation of valid data (File Body). Insert a descriptor. In this way, thumbnail data files are managed.

  On the other hand, as a result of the determination in step S602, if any of the above-described instructions is given, the process proceeds to step S604. In step S604, the disc control unit 111 records the playlist data and thumbnail information data stored in the memory 114 on the disc 112 as a playlist file and a thumbnail information file, respectively. The playlist file and the thumbnail information file are recorded in the outer peripheral areas 307 and 308, respectively.

  Next, in step S605, when any of the above-described instructions (1) to (4) is given, the disc control unit 111 executes a defragmentation process of the thumbnail data file. In the defragmentation process of the thumbnail data file, the individual thumbnail data scattered in the areas 304, 305, and 306 are moved to the areas 309, 310, and 311 shown in FIG.

  Specifically, the representative image data recorded in the areas 304, 305, and 306 is read out, recorded in the areas 309, 310, and 311, and then the representative image data recorded in the areas 304, 305, and 306 is deleted. .

  FIG. 4D shows the state of the UDF management information (File Entry) of the thumbnail data file after the defragmentation process. As shown in FIG. 4D, defragmentation can be realized by changing the extent position of each valid data (File Body).

  In the defragmentation process, since the data recording position is moved, frequent seeks are required, and noise is generated. For this reason, recording of noise can be avoided by terminating the recording process and executing the defragmentation process when any of the above-mentioned instructions (1) to (4) is issued.

  Further, when the recording process is further performed after the defragmentation process, the stream data file, the thumbnail data, and the clip information file are continuously added in the outer peripheral direction as shown in FIG. Then, as shown in FIG. 3E, the thumbnail information file and the playlist file are overwritten at the timing described above. Further, when the defragmentation process is executed, new thumbnail data is moved to areas after the areas 309, 310, and 311 in which the thumbnail data in the thumbnail data file is recorded.

  As described above, in the video camera 100 of the present embodiment, when shooting is repeated in the shooting mode, thumbnail data and management information are recorded on the disc 112 so as to follow the stream data. This eliminates the seek of the pickup and suppresses recording of noise due to the seek. In addition, since the thumbnail data file is defragmented at the timing when the power is turned off, the thumbnail data can be read out at the next playback speed, and the list of representative images can be displayed at high speed. It can be carried out.

(Second Embodiment)
In the first embodiment, after the thumbnail data file has been defragmented, the areas 312, 313, and 314 where the thumbnail data was originally recorded are free areas. These free areas can be reused to record other data, but since a small area of 16 KB exists, it is difficult to be effectively reused. Note that when recording stream data, the minimum continuous area size is determined and this condition cannot be satisfied with 16 KB, so the free area cannot be used for recording stream data.

  Therefore, in the present embodiment, an example will be described in which the empty area is used as a backup file area for a thumbnail data file. Although the recording of the backup file is not an essential function, it is desirable to record it as a backup in the case where the thumbnail data file cannot be read due to a scratch on the disk medium or the like. Although the backup file is recorded with the same file name as the original thumbnail data file, it is recorded in a backup-dedicated directory so that it can be distinguished from the original thumbnail data file.

  Note that the configuration of the video camera, the UDF management information, and the like of the present embodiment are the same as those in the first embodiment, and thus description thereof is omitted. In the present embodiment, parts different from the first embodiment will be described.

FIG. 5 is a diagram showing an example of the structure of the recording area of the disk 112 in this embodiment.
At the stage of formatting the blank disc, as shown in FIG. 5 (a), it is the same as in the first embodiment. However, in this embodiment, when the stream data file is continuously recorded, as shown in FIG. 5B, the thumbnail data is an area adjacent to the area where the stream data file is recorded as a backup file of the thumbnail data. Record at 501. When recording stream data continuously, thumbnail data is recorded in areas 502 and 503 adjacent to the area where the stream data file is recorded as a backup file of thumbnail data in the same procedure.

  In this embodiment, when performing the defragmentation process, as shown in FIG. 5C, the contents of the thumbnail data backup file are copied to the thumbnail data file. That is, the thumbnail data recorded in the areas 501, 502, and 503 are copied to the areas 504, 505, and 506 in the thumbnail data file, respectively. In the first embodiment, when the defragmentation process is performed, the area where the thumbnail data is originally recorded is an empty area, but in the present embodiment, it is held as a backup file of the thumbnail data.

  When the recording process is further performed after the defragmentation process, as shown in FIG. 5D, the thumbnail data is stored in areas 507 and 508 adjacent to the area where the stream data file is recorded as a backup file of the thumbnail data. Append. When the defragmentation process is performed again, the thumbnail data is copied to the areas 509 and 510 in the thumbnail data file.

  By repeating the recording process in this way, thumbnail data is recorded in a continuous area in the thumbnail data file. On the other hand, the thumbnail data backup file is recorded with the data area divided, but as described above, it is a file that is used only when the thumbnail data file cannot be read. The defragmentation process is not executed.

  As described above, in the video camera according to the present embodiment, since the area that was an empty area in the first embodiment is used as a thumbnail data backup file, it is possible to improve data integrity.

(Other embodiments according to the present invention)
Each means constituting the recording apparatus and each step of the recording method in the embodiment of the present invention described above can be realized by operating a program stored in a RAM or ROM of a computer. This program and a computer-readable storage medium storing the program are included in the present invention.

  In addition, the present invention can be implemented as, for example, a system, apparatus, method, program, storage medium, or the like. Specifically, the present invention may be applied to a system including a plurality of devices. The present invention may be applied to an apparatus composed of a single device.

  The present invention includes a case where a software program (in the embodiment, a program corresponding to the flowchart shown in FIG. 6) for realizing the functions of the above-described embodiments is directly or remotely supplied to a system or apparatus. This includes the case where the system or the computer of the apparatus is also achieved by reading and executing the supplied program code.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, and the like.

  Examples of the storage medium for supplying the program include a flexible disk, a hard disk, an optical disk, and a magneto-optical disk. Further, there are MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card, ROM, DVD (DVD-ROM, DVD-R) and the like.

  As another program supply method, there is a method of connecting to a homepage on the Internet using a browser of a client computer. It can also be supplied by downloading the computer program itself of the present invention or a compressed file including an automatic installation function from a homepage to a storage medium such as a hard disk.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  As another method, the program of the present invention is encrypted, stored on a recording medium such as a CD-ROM, distributed to users, and encrypted from a homepage via the Internet to users who have cleared predetermined conditions. Download the key information to be solved. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  Further, the functions of the above-described embodiments are realized by the computer executing the read program. Furthermore, based on the instructions of the program, an OS or the like running on the computer performs part or all of the actual processing, and the functions of the above-described embodiments can be realized by the processing.

  As another method, a program read from a storage medium is first written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Then, based on the instructions of the program, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are also realized by the processing.

It is a block diagram which shows the structural example of the video camera in the 1st Embodiment of this invention. It is a figure which shows an example of the index display screen of a thumbnail. It is a figure which shows the structural example of the recording area of the disc in the 1st Embodiment of this invention. It is a figure which shows a part of UDF management information (File Entry) of the thumbnail data file in the 1st Embodiment of this invention. It is a figure which shows the structural example of the recording area of the disc in the 2nd Embodiment of this invention. It is a flowchart which shows an example of the recording processing procedure in the 1st Embodiment of this invention.

Explanation of symbols

100 Video camera 101 Control unit 102 Lens 103 Image sensor 104 Signal processing unit 105 H.264 encoding / decoding unit 106 JPEG encoding / decoding unit 108 Microphone 109 Speaker 110 Audio signal encoding / decoding unit 111 Disk control unit 112 Disk 113 Flash memory 114 Memory 115 Display unit 116 Data bus 117 Operation switch

Claims (10)

Recording means for recording moving image data and representative image data of the moving image data on a disk-shaped recording medium;
In response to the recording of the moving image data, the representative image data is recorded in an area adjacent to the recording area of the moving image data, and in response to a predetermined instruction to end the recording of the moving image data on the disc-shaped recording medium. And control means for controlling the recording means so as to record the recorded representative image data in one continuous area different from the area where the representative image data is recorded on the disc-shaped recording medium. A recording device.   The said control means erases the said representative image data from the area | region where the said representative image data was recorded after recording the said representative image data in the said continuous area before recording in the said continuous area. Item 2. The recording device according to Item 1.   The recording apparatus according to claim 1, further comprising an initialization unit configured to perform initialization so that the one continuous area is secured in advance when the disk-shaped recording medium is initialized.   4. The recording apparatus according to claim 3, wherein the initialization unit uses UDF as a file system and reserves the one continuous area as a reserved area for a UDF allocation descriptor. A recording step of recording moving image data and representative image data of the moving image data on a disk-shaped recording medium;
In response to the recording of the moving image data, the representative image data is recorded in an area adjacent to the recording area of the moving image data, and in response to a predetermined instruction to end the recording of the moving image data on the disc-shaped recording medium. And a control step of controlling processing in the recording step so as to record the recorded representative image data in one continuous area different from the area in which the representative image data is recorded in the disc-shaped recording medium. A recording method characterized by the above.   In the control step, after the representative image data is recorded in the continuous area, the representative image data is erased from an area where the representative image data is recorded before recording in the continuous area. The recording method according to claim 5.   7. The recording method according to claim 5, further comprising an initialization step of performing initialization so that the one continuous area is secured in advance when the disc-shaped recording medium is initialized.   8. The recording method according to claim 7, wherein, in the initialization step, UDF is used as a file system, and the one continuous area is secured in advance as a reserved area for a UDF allocation descriptor. A recording step of recording moving image data and representative image data of the moving image data on a disk-shaped recording medium;
In response to the recording of the moving image data, the representative image data is recorded in an area adjacent to the recording area of the moving image data, and in response to a predetermined instruction to end the recording of the moving image data on the disc-shaped recording medium. And a control step of controlling the processing in the recording step so as to record the recorded representative image data in one continuous area different from the area in which the representative image data is recorded in the disc-shaped recording medium. A program characterized by being executed.   A computer-readable storage medium storing the program according to claim 9.

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