JP2008276886A - Recording device and method for recording - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly judge which recording format for recording is applied for recording on a disk in the intermediate state. <P>SOLUTION: The recording and reproducing device for recording video data on a disk medium in a plurality of formats comprises a track information acquiring means for acquiring the track information of the inserted disk medium when the disk medium is inserted, and a format determining means for determining the disk format of an application level based on the track information acquired by the track information acquiring means, thereby enabling determination of the recording format of the disk in the intermediate state with less disk accesses. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a recording apparatus and a recording method, and particularly to a technique suitable for use in recording data on a recording medium according to a plurality of types of recording formats.

  2. Description of the Related Art Conventionally, a video camera that captures an image and records it on a magnetic tape or a memory card is known. In recent years, a disc video camera that records and reproduces video data on an optical disc such as a DVD has appeared as this type of video camera.

  A DVD video format has been proposed as a recording format for recording video data on a DVD disc. In the DVD video format, standard resolution (SD) video data is encoded according to the MPEG2 system and recorded on a DVD disk. In recent years, the AVCHD format has been proposed as a recording format for recording high-resolution (HD) image data.

  In the AVCHD format, H.264 is used. In accordance with the H.264 (MPEG4 / AVC) system, high-resolution video data is encoded. Video cameras that record video data encoded in accordance with the AVCHD format on a DVD disc have also appeared. The video data recorded on the DVD disc is managed according to a predetermined file system.

  For example, in the DVD video format, data is managed according to UDF (Universal Disk Format) 1.02, and in the AVCHD format, data is managed according to UDF2.5. The UDF information is recorded at a predetermined position on the DVD disc. Processing for recording such file system information on a DVD disc is called finalization processing. A DVD disc that has undergone finalization processing cannot be additionally written, and is exclusively for reproduction.

  By the way, when data is recorded on a DVD-R which is a write-once disc, file system (UDF) information cannot be recorded because the arrangement of data on the disc is not determined until the finalizing process is executed.

  Therefore, it is considered to manage files using a temporary file system different from UDF information until finalization processing is performed (see, for example, Patent Document 1). Such a file system is called an intermediate file system, and a state before finalization is called an intermediate state. Such an intermediate file system is not defined by the recording format, and each manufacturer uses a unique one.

JP 2004-005771 A

  If the video camera is compatible with only one of the DVD video format and the AVCHD format, the intermediate file system used is also one type. Therefore, the data on the disc may be managed using an intermediate file system corresponding to one recording format.

  However, in the case of a video camera capable of recording video data on a DVD disc in either the DVD video format or the AVCHD format, it is conceivable to record data in both recording formats with a single video camera.

  At that time, it is necessary to determine which recording format is the recording format of the loaded DVD disc. However, when a disk in an intermediate state is loaded, the recording position of management information managed in the intermediate file system and the contents of management information differ for each recording format. For this reason, since it is not easy to determine the intermediate file system of the loaded disc, there is a problem that it takes a long time to determine the recording format.

  An object of the present invention is to make it possible to determine at high speed which recording format an intermediate disk is in view of the above-mentioned problems.

The recording apparatus of the present invention is a recording apparatus for recording video data on a disc-shaped medium in a plurality of formats, and a track for acquiring track information of the inserted disc-shaped medium when the disc-shaped medium is inserted. An information acquisition unit and a format determination unit that determines an application-level disc format based on the track information acquired by the track information acquisition unit.
Another feature of the recording apparatus of the present invention is a recording apparatus for recording video data on a disc-shaped medium in both a DVD video format and an AVCHD format, when the disc-shaped medium is inserted. Track information acquisition means for acquiring track information of the inserted disc-shaped medium, and track information specific to the DVD video format or track information specific to the AVCHD format among the track information acquired by the track information acquisition means And a format discrimination means for discriminating whether the application-level disc format is the DVD video format or the AVCHD format.

The recording method of the present invention is a recording method for recording video data on a disc-shaped medium in a plurality of formats, and a track for acquiring track information of the inserted disc-shaped medium when the disc-shaped medium is inserted. An information acquisition step; and a format determination step of determining an application-level disc format based on the track information acquired in the track information acquisition step.
Another feature of the recording method of the present invention is a recording method for recording video data on a disc-shaped medium in both a DVD video format and an AVCHD format, when the disc-shaped medium is inserted. Track information acquisition step for acquiring track information of the inserted disc-shaped medium, and track information specific to the DVD video format or track information specific to the AVCHD format among the track information acquired in the track information acquisition step And a format discriminating step for discriminating whether the disc format at the application level is the DVD video format or the AVCHD format.

The program of the present invention is a program for causing a computer to execute a process of recording video data on a disk-shaped medium in a plurality of formats, and when the disk-shaped medium is inserted, track information of the inserted disk-shaped medium The track information acquiring step for acquiring the disc information and the format determining step for determining the disc format at the application level based on the track information acquired in the track information acquiring step are executed by a computer.
Another feature of the program of the present invention is a program for causing a computer to execute a process of recording video data on a disc-shaped medium in both a DVD video format and an AVCHD format, wherein the disc-shaped medium is inserted. A track information acquisition step for acquiring track information of the inserted disc-shaped medium, and track information specific to the DVD video format among the track information acquired in the track information acquisition step, or the AVCHD format. Using the specific track information, the computer is caused to execute a format discrimination step for discriminating whether the disc format at the application level is the DVD video format or the AVCHD format.

  According to the present invention, the track information recorded on the loaded disk-shaped medium is effectively used to determine the application level, so that the recording format can be determined with fewer disk accesses. It becomes possible. Thereby, it is possible to determine at high speed which recording format the disc in the intermediate state is.

(First embodiment)
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The recording / reproducing apparatus of this embodiment can record data using the above-mentioned DVD-Video (DVD video) and AVCHD formats, and can use a DVD-R as a disc-shaped medium.

  FIG. 11 shows a configuration example of a DVD video camera 1100 to which this embodiment is applied. The DVD video camera 1100 can record and save captured moving image data on a DVD medium.

  The DVD video camera 1100 includes an imaging unit 1101, a video signal processing unit 1102, an audio signal processing unit 1103, a microphone 1104, a frame memory 1105, a CPU (Central Processing Unit) 1106, and the like. In addition, a video / audio codec 1107, a recording / playback unit 1108, and the like are included. In addition, an operation unit 1109, a display unit 1110, a flash memory 1111, a stream buffer 1112, a multiplexing processing unit (multiplexer / demultiplexer) 1113, an external interface 1115, and the like are also provided.

  In the DVD video camera 1100 of the present embodiment, the imaging unit 1101 converts a subject image into an electrical signal, and has a function of shooting a moving image and a still image. The video signal processing unit 1102 performs A / D conversion processing and appropriate image processing on the video signal generated by the imaging unit 1101.

  The microphone 1104 captures external sound, and the sound signal processing unit 1103 performs A / D conversion processing and appropriate signal processing on the sound signal generated by the microphone 1104. The frame memory 1105 buffers the video / audio data obtained by photographing until it is encoded / multiplexed at the time of recording. Further, at the time of reproduction, buffering is performed until video / audio data subjected to demultiplexing / decoding processing by the multiplexing processing unit 1113 is output.

  The video / audio codec 1107 compresses and encodes video data and audio data. The recording / reproducing unit 1108 reads / writes data from / to the optical disc 1114.

  An operation unit 1109 is for accepting an operation from a user and operating the DVD video camera 1100. The display unit 1110 has a liquid crystal screen (not shown), displays a camera image during recording, and displays a playback video during playback, and has a function of displaying a setting menu for the DVD video camera 1100 and the like.

  The flash memory 1111 stores information that cannot be written in real time on the optical disk 1114 during recording and that needs to be retained even in a power-off state. However, it is also used for storing information necessary for returning to a state in which photographing can be performed when the battery is removed during photographing.

  The stream buffer 1112 is for holding the stream data multiplexed in the multiplexing processing unit 1113. The multiplexing processing unit 1113 generates stream data by multiplexing the compression-encoded video / audio data, and generates video / audio data by demultiplexing the stream data. The optical disk 1114 is a recordable medium such as a DVD-R or DVD-RW, and video and still images are recorded / reproduced on this medium.

  At the time of recording, the electrical signal obtained by the imaging unit 1101 is converted into digital data by the video signal processing unit 1102 and buffered in the frame memory 1105. At the same time, the audio signal acquired from the microphone 1104 is converted into digital data by the audio signal processing unit 1103 and buffered in the frame memory 1105.

  The video / audio data stored in the frame memory 1105 is compressed by the video / audio codec 1107, respectively. Then, after being subjected to multiplexing processing by the multiplexing processing unit 1113, it is held in the stream buffer 1112 as stream data.

  The stream buffer 1112 has a capacity that can hold stream data of one recording unit. When the stream data is accumulated for one recording unit, the stream data is written to the optical disc 1114 through the recording / reproducing unit 1108. In addition, cell information related to the stream data written to the optical disk 1114 is written to the flash memory 1111.

  The operation unit 1109 is an interface for the user to perform operations such as recording / playback operation instructions. The display unit 1110 has a liquid crystal panel (not shown) that displays the subject image captured by the imaging unit 1101. When data in the optical disc (DVD-R) 1114 is reproduced, the reproduced image is displayed on the liquid crystal panel. It also has functions such as menu display necessary for making settings for the display unit 1110.

  The recording system for the optical disk 1114 that is a DVD-R is the incremental recording system (hereinafter referred to as the INC system), which can be recorded sequentially from the inner periphery to the outer periphery, and once recorded, it can be overwritten. Can not. In the INC system, there are up to three areas that can be recorded on the DVD-R, and each area can be recorded sequentially. This area is called Rzone. Note that a DVD-R DL, which is a single-sided dual-layer disc, has a maximum of four recordable areas.

Next, the DVD-Video format (DVD video format) will be described with reference to FIG.
The following areas are in order from the inner periphery of the DVD-R that is a recording medium. That is, a UDF (Universal Disc Format, code 101) area which is a file system. A VMG (Video Manager, code 102) area that manages the entire video data. The maximum number of video title sets (VTS) 104 is 99.

  Each VTS 104 includes a VTSI (Video Title Set Information) 105, a VTSTT_VOB (Video Object Set for Titles in a VTS) 106, and a VTSI_BUP (Backup of VTSI) 107. In the VTSI 105, title information is recorded. VTSTT_VOB 106 is composed of MPEG2 Program Stream. The VTSI_BUP 107 is a backup of the VTSI 105.

  When video data is recorded in the format as described above, the UDF area 101 and the VMG area 102 cannot be recorded until the recording status of the video data on the entire disk is determined. Similarly, the VTSI 105 and its backup VTSI_BUP 107 cannot be recorded until the recording of the video data VTSTT_VOB 106 is complete, because the contents are not fixed.

  Therefore, when video data is recorded in the DVD-Video format, the data recording on the DVD-R is performed in the order shown in FIG. Also, the software and hardware configurations for controlling recording and reproduction have a hierarchical structure as shown in FIG. That is, the configuration includes an application (application level) 301, a UDF / intermediate file system 302, an ATA / ATAPI 303, a disk drive 304, and an optical disk 305. Here, a data recording procedure of the DVD-Video format will be described.

  First, an area for UDF and VMG (Rzone 1, an area denoted by reference numeral 201 in FIG. 2) and an area for VTSI (Rzone 2, an area denoted by reference numeral 202) are reserved. The area behind Rzone 2 is Invisible Rzone, which is an area where data can be added effectively.

  When the recording of the actual data VTSTT_VOBS (reference numeral 203) is completed, VTSI information is immediately generated, recorded as VTSI_BUP behind the VTSTT_VOBS (reference numeral 204), and the Invisible Rzone is closed. Then, a new Invisible Rzone (reference numeral 205) is formed. Further, the same content is recorded as VTSI in Rzone 2 (reference numeral 202), and the remaining area of Rzone 2 is padded and filled. Also, provisional VMGI (Temporary Video Manager Information; TMP_GI) is recorded at the end of Rzone 2 (reference numeral 206), and Rzone 2 is closed (FIG. 2A).

  At this point, there are only two recordable areas, Rzone 1 (reference numeral 201) and a new Invisible Rzone (reference numeral 205). For this reason, one new Rzone can be secured. When video data is continuously recorded, Rzone 2 is newly reserved for VTSI recording as described above (reference numeral 207), and video data is recorded after that.

  In addition, it is possible to record still image data on such an optical disc 305, but even in such a case, JPEG data cannot be recorded in the middle of the VTS, and recording is performed between the VTS and the VTS. Establish an area. After JPEG data is recorded (reference numeral 208), Rzone is once closed. Thereafter, TMP_EXTI (Temporary Extended Information) for managing JPEG data is recorded (reference numeral 209), and finally the temporary VMGI (reference numeral 210) is recorded, and the Rzone is closed (FIG. 2B).

  As described above, the temporary VMGI for managing files can manage both video data and JPEG data, and the recording position is recorded at the end of the VTSI area or the end of the EXTI area. FIG. 2C shows an example in which video data and still image data are repeatedly recorded as described above. In this example, a plurality of temporary VMGIs are recorded in the VTSI and EXTI areas. In order to grasp the contents recorded on the optical disc 305, not all the temporary VMGIs are necessary. That is, the recorded content can be grasped by reading the latest VM, that is, the temporary VMGI recorded on the outermost periphery.

  In the case of FIG. 2D, the temporary VMGI with the reference numeral 212 recorded at the end of the VTSI area indicated with the reference numeral 211 is the latest. In addition, when the optical disk 305 is removed from the recording apparatus of the present embodiment, the latest temporary VMGI is always recorded on the optical disk 305 and then removed.

  Further, the Rzone configuration of the DVD-R recorded as described above can be read as track information. The track information is read by a recording / reproducing unit 1108 that functions as a track information acquisition unit under the control of the CPU 1106. Here, the track is synonymous with Rzone, and the configuration of Rzone and the recording status in Rzone can be known as track information. This track information is recorded in an RMA (Recording Management Area) located further inside than the UDF reserved area, and an area (Rzone) recorded on the disc-shaped medium by reading the recorded information. You can know the composition of.

  Information recorded in these RMAs is recorded by the disk drive 304. For example, at the time of Rzone reservation, an ATAPI command XXX is issued from an ATAPI (AT Attachment Packet Interface) denoted by reference numeral 303 in FIG. In response to this ATAPI command XXX, the disk drive 304 performs recording in the RMA area.

  As described above, recording to the RMA is performed in accordance with an instruction from the ATAPI 303. However, the disk drive 304 that receives the command may determine an appropriate timing and perform recording to the RMA. The track information can also be read from the RMA area of the DVD-R by a READ TRACK INFORMATION command which is an ATAPI command and read in a format defined as track information. For example, the track information of the DVD-R in the state shown in FIG. 2D is as shown in FIG.

  Next, the contents of the track information will be described. Each track (Track) is given a track number (Track No). For each track number, there are information such as start address (Start Address), NWA (Next Writable Address: boundary between recorded area and unrecorded area), Free Blocks, Track Size, and LRA (Last Recorded Address). .

  Start Address indicates from which address on the disk the track is located, and Track Size indicates the size. In the case of DVD-R, the entire disk is divided into fixed-length blocks of 2 KB called sectors, where addresses are represented by sector numbers and sizes are represented by the number of sectors. NWA indicates from which address recording is possible in the track. For a closed track (Rzone), that is, a track in which all sectors in the track have been recorded, NWA is indicated by 0 (for example, , Tracks 2 to 11 in FIG. Free Blocks indicates the number of unrecorded sectors in the sector. LRA indicates the address of the sector recorded last in the track. In the case of the INC system, recording is performed in order from a sector with a small address in each Rzone, so in the closed Rzone, the LRA indicates the address of the last sector of the track.

Here, characteristics regarding the track information of the intermediate state disc in the DVD-Video format will be described.
First, the Rzone (track) reserved in advance before data recording, the UDF reserved area denoted by reference numeral 201 in FIG. 2, and the VTSI areas indicated by reference numerals 202 and 207, etc. are reserved tracks. This is a fixed-length area. For example, track 1 which is a UDF reserved area is reserved with Track Size “0x2ff0” and tracks 2, 4 and 10 which are VTSI areas are reserved with Track Size “0x100”.

  In other words, it can be said that a track having a track size of “0x100” is very likely to be used as a VTSI area. Conversely, the area in which the track is closed after data recording, the track 3 including the VOBS 203, and the track 6 including the JPEG data 208 have a variable length size.

  Further, in the DVD-Video intermediate state disk extracted from the apparatus, only the track 1 of the UDF reserved area and the track 12 which is the Invisible Rzone are open tracks (not closed, in a recordable state). . The other tracks 2 to 11 are closed tracks (tracks on which no further recording can be performed). This is because the temporary VMGI is always recorded and the track is closed when the disc is taken out, and there is no other open track.

Next, the AVCHD format will be described with reference to FIG.
In the AVCHD format, unlike the DVD-Video format described above, the arrangement order of data on the DVD-R medium is not determined except for the UDF recording position. In the recording / reproducing apparatus of this embodiment, the UDF, the management data file, and then the video data file are arranged on the innermost periphery.

  In this way, by arranging the management data file in a specific area, it is possible to suppress the occurrence of seek when the file is read during reproduction, and high-speed and stable reading can be expected. The management data file is a file for managing the video data file. When the video data file is recorded, the management file is added accordingly.

  That is, Rzone 1 (reference numeral 501) for recording the UDF and Rzone 2 (reference numeral 502) for recording the management file are secured on the optical disc 305. Then, a video data file is added to Invisible Rzone (reference numeral 503).

  Rzone 2 (reference numeral 502) exists as an open track until finalization is performed, and a file can be added at any time. Invisible zone (reference numeral 503) records temporary file system information (referred to as temporary FS, a format different from temporary VMGI, reference numeral 504) when the optical disk 305 is taken out from the recording / reproducing apparatus of the present embodiment. . Thereafter, the Zone is closed (FIG. 5A).

  Accordingly, the number of tracks increases each time the optical disc 305 is taken out, and the temporary FS is always recorded in (LRA-0xf) of the track after the track 3 (0xf is the size of the temporary FS). Since the latest temporary FS is recorded in the LRA of the outermost track (reference numeral 505), the latest information on the file recorded on the disc can be grasped without reading the inner temporary FS. can do.

Here, the track information of the DVD-R in the state of FIG. 5B is as shown in FIG.
Track 1, which is a UDF reserved area, is an unrecorded state, that is, Free Blocks = Track Size, and is an open track. In track 2, which is a management file recording area, some of the sectors in the track are used for recording of the management file and are already recorded, but are in an open state and hold a recordable state.

Next, a disc format determination method in the recording / reproducing apparatus of this embodiment will be described with reference to the flowchart of FIG.
In the recording / reproducing apparatus of the present embodiment, when a DVD-R (the optical disk 1114 in FIG. 11) is inserted as the optical disk 305, a disk format determination process is started (step S701). Next, the process proceeds to step S702, where the disc type is determined. As a result of this determination, the disc type that cannot be used in the recording / reproducing apparatus of this embodiment proceeds to step S703 and is processed as an error.

  If the result of disc type discrimination is DVD-RW, the process advances to step S704 to perform RW discrimination processing. In the case of a DVD-R, the process proceeds to step S705, and R determination processing is executed. Here, since the RW discrimination processing is not related to the essence of the present invention, the detailed description is omitted.

Next, the R determination process performed in step S705 will be described with reference to the flowchart of FIG.
When the R determination process is started in step S706, first, the recording state of the disc is checked (step 707). If the result of this check is that the disc is an unrecorded (blank) disc, the flow advances to step S708 to perform mount error processing. In this case, it is necessary for the user to select either the DVD-Video format or the AVCHD format to record the video data. At this stage, the determination process is interrupted as an error.

  On the other hand, if it is determined in step S707 that the disc has been recorded, the process proceeds to step S709 to check AVDP (Anchor Volume Descriptor Pointer). As a result of this check, in the case of a finalized disc, the AVDP is recorded on the track 1 which is the UDF reserved area described above (address “0x100”), and is not recorded on the disc in the intermediate state.

  Accordingly, for a disc on which AVDP is recorded and UDF has been recorded, the process proceeds to step S710 and UDF discrimination processing is performed. In the UDF discrimination processing, it is possible to discriminate between the DVD-Video format and the AVCHD format based on the UDF version or the like, but the details are omitted because they are not related to the present invention. On the other hand, as a result of the determination in step S709, the process proceeds to step S711 for a disc having no AVDP recording, and intermediate state determination processing is performed.

Next, the intermediate state determination process performed in step S711 will be described in detail with reference to the flowchart of FIG. The intermediate state determination process described below is a feature of the recording / reproducing apparatus of this embodiment. This intermediate state determination process is performed by acquiring track information specific to the DVD video format or track information specific to the AVCHD format by the recording / reproducing unit 1108 functioning as an information acquisition unit.
When the intermediate state determination process is started in step S801, first, the track information described above is acquired (step 802). Next, in the acquired track information, it is checked whether or not the track 1 corresponding to the UDF reserved area is in an open state (step 803). In the present embodiment, the track 1 used in the intermediate state determination process is a track having a specific track number.

  If the result of the check in step S803 is that the track 1 is not open, there is a high possibility that the disc has a format that cannot be handled by the recording / playback apparatus of this embodiment. To do. The intermediate file system search process will be described later.

  On the other hand, if it is determined in step S803 that the track 1 is open, the process proceeds to step S805 to check whether the track 2 is open. As a result of this check, if the track 2 is open, the process proceeds to step S806, and the presence / absence of temporary FS recording is determined.

  If the result of determination in step S806 is that there is provisional FS recording, the possibility of an AVCHD intermediate disc is high, so the information on the outermost closed track (LRA-0xf) is read. If the read information is a temporary FS, the process proceeds to step S807, and is determined to be an AVCHD intermediate disk. If the result of determination in step S806 is that the temporary FS cannot be read, processing proceeds to step S811, and the intermediate file system search processing is performed.

  On the other hand, if the result of determination in step S805 is that track 2 is not open, the process proceeds to step S808 to check whether the number of open tracks is “2”. If the number of open is “2” as a result of this confirmation, there is a high possibility that it is a DVD-Video intermediate disk, and the process advances to step S809. Then, (LRA-0xf) of the track (VTSI area) of the outermost track Size 0x100 or the track (EXTI area) of “0x50” in which temporary VMGI recording may be performed is read. Then, it is checked whether or not the temporary VMGI is recorded. If the number of open is not “2” as a result of the determination in step S808, the process proceeds to step S811, and the intermediate file system search process is performed.

  As a result of the check in step S809, if the temporary VMGI recording is confirmed, the process proceeds to step S810, and the disc is determined to be a DVD-Video intermediate disc. If the result of determination in step S809 is that the temporary VMGI could not be read, the process proceeds to step S811 and proceeds to intermediate file system search processing.

Next, the intermediate file system search process performed in step S811 will be described with reference to the flowchart of FIG.
When the intermediate file system search process is started in step S901, next, in step S902, information recorded in (LRA-0xf) of each track is read in order from the outer track toward the inner track.

  Next, in step S903, it is confirmed whether the temporary FS or the temporary VMGI is recorded. As a result of the confirmation, if the provisional FS recording is confirmed, the process proceeds to step S904 and is handled as an AVCHD intermediate state disk.

  As a result of the confirmation in step S903, if the recording of the temporary VMGI is confirmed, the process proceeds to step S905 and handled as a DVD-Video intermediate state disk. If the result of the confirmation in step S903 is none, the process proceeds to step S906, where it is determined whether there is a track on the inner periphery.

  If the result of this determination is that there is a track on the inner periphery, the process proceeds to step S907, where one inner periphery track is changed to the search target, and then the process returns to step S903 to perform the above-described processing. If the result of determination in step S906 is that there is no track on the inner periphery, processing proceeds to step S908 and mount error processing is performed.

  As described above, each track is searched until information is found. In this way, the intermediate file system search process needs to follow the track of the disk, and since it is not possible to predict what information is also read, it is necessary to perform a complicated process, Processing time may become longer.

  As described above, by effectively using the track information, the AVCHD intermediate disk and the DVD-Video intermediate disk can be easily processed before executing the intermediate file system search process which is complicated and frequently accesses the disk. Discrimination becomes possible. In addition, the information recorded in the track can be estimated from the track size of each track, and the track on which the intermediate file system may be recorded can be identified.

  Also, the track size of the track 1 can be used for discrimination between AVCHD and DVD-Video. The track 1 is an area reserved for UDF recording. In the case of AVCHD and DVD-Video, the track 1 can be easily discriminated by reserving different sizes in advance. For example, in the example of FIG. 4 and FIG. 6, since Track Size “0x02ff0” is reserved in DVD-Video and “0x02a60” is reserved in AVCHD, format discrimination can be performed based on this size.

(Second Embodiment)
As described in the first embodiment, the AVCHD format does not define details about the physical recording position of the file. Therefore, in the first embodiment, the management file is collected and recorded in the area of the track 2, but this is not always necessary.

  In such a case, the information is recorded as shown in FIG. 10 and may be added as needed without distinguishing between the video data file and the management data file except for the UDF reserved area (reference numeral 1001) of track 1. In this case, as can be seen from FIG. 10, the number of tracks always remains two. The temporary FS is always recorded at the end of the track 2 where the data 1002 is recorded when the disc is taken out (reference numeral 1003). When the disc is inserted, the temporary FS can be read by reading (LRA-0xf) of track 2.

  In the recording / reproducing apparatus using the AVCHD intermediate disc as described above, the number of tracks in the track information can be used for discrimination between the AVCHD intermediate disc and the DVD-Video intermediate disc. As described above, the number of tracks is always 2 in AVCHD. On the other hand, in DVD-Video, since the number of tracks is three or more, the format can be determined based on the number of tracks.

(Another embodiment according to the present invention)
Each means constituting the recording / reproducing apparatus according to 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 recording medium recording the program are included in the present invention.

  In addition, the present invention can be implemented as a system, apparatus, method, program, storage medium, or the like, and can be applied to a system composed of a plurality of devices. Moreover, you may apply to the apparatus which consists of one apparatus.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 7 to 9) for executing each step in the recording / reproducing method described above is directly or remotely supplied to the system or apparatus. To do. In addition, this includes a 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.

  Various recording media can be used as a recording medium for supplying the program. For example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card, ROM, DVD (DVD-ROM, DVD- R).

  As another program supply method, a browser on a client computer is used to connect to an Internet home page. The computer program itself of the present invention or a compressed file including an automatic installation function can be downloaded from the homepage by downloading it to a recording 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.

  In addition, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. Let It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer performs part or all of the actual processing. Also, the functions of the above-described embodiments can be realized.

  Further, the program read from the recording medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instructions of the program, and the functions of the above-described embodiments are realized by the processing.

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

It is a figure explaining the detail of a DVD video format. It is a figure explaining the recording order in the case of recording video data on a DVD disc by a DVD video format. It is a figure explaining the hierarchical structure of the software and hardware which control recording and reproduction | regeneration in a recording / reproducing apparatus. It is a figure which shows an example of the track information of a DVD video format. It is a figure explaining the detail of AVCHD format. It is a figure which shows an example of the track information of AVCHD format. (A) is a flowchart for explaining an example of a disc format discrimination processing procedure, and (b) is a flowchart for explaining an example of an R discrimination processing procedure. It is a flowchart explaining an example of the disc format discrimination | determination processing procedure in an intermediate state. It is a flowchart explaining an example of an intermediate file system search processing procedure. It is a figure explaining another example of the detail of an AVCHD format. It is a block diagram which shows the structural example of the DVD video camera which can perform the intermediate | middle state discrimination | determination process of this embodiment.

Explanation of symbols

201 UDF / VMG reserved area (Track 1)
202 VTSI reservation area (Track2)
206 JPEG recording area (Track 6)
209 EXTI recording area (Track 7)
501 UDF reserved area (Track 1)
502 Management file recording area (Track 2)
1001 UDF reserved area (Track 1)
1100 DVD video camera 1101 imaging unit 1102 video signal processing unit 1103 audio signal processing unit 1104 microphone 1105 frame memory 1106 CPU (central processing unit)
1107 Video / audio codec 1108 Recording / playback unit 1109 Operation unit 1110 Display unit 1111 Flash memory 1112 Stream buffer 1113 Multiplexing unit (multiplexer / demultiplexer)
1114 Optical disk 1115 External interface

Claims (18)

A recording device for recording video data on a disc-shaped medium in a plurality of formats,
Track information acquisition means for acquiring track information of the inserted disk-shaped medium when the disk-shaped medium is inserted;
A recording apparatus comprising: a format discriminating unit that discriminates an application level disc format based on the track information acquired by the track information acquiring unit.   The format determining means identifies an open track in the track information acquired by the track information acquiring means, and determines the application-level disc format based on the number of tracks and the track number. The recording apparatus according to claim 1.   3. The recording apparatus according to claim 2, wherein the format discriminating unit discriminates the application level disc format based on a track size of a specific track number in the track information acquired by the track information acquiring unit.   The recording apparatus according to claim 3, wherein the specific track number is a track 1 number.   2. The recording apparatus according to claim 1, wherein in the acquired track information, an application-level disc format is determined based on whether or not the number of tracks is two.   6. The recording apparatus according to claim 1, wherein the format discriminating unit discriminates a DVD video format and an AVCHD format as the application level disc format.   A recording unit configured to set a predetermined area on the disk-shaped medium and record the video data for each area, and the track information is information indicating a configuration of the area set on the disk-shaped medium; The recording apparatus according to claim 1.   The recording apparatus according to claim 7, wherein the plurality of formats have different configurations of video data recorded in the area. A recording device for recording video data on a disc-shaped medium in both DVD video format and AVCHD format,
Track information acquisition means for acquiring track information of the inserted disk-shaped medium when the disk-shaped medium is inserted;
Of the track information acquired by the track information acquisition means, the application-level disc format is the DVD video format or AVCHD format using the track information specific to the DVD video format or the track information specific to the AVCHD format. A recording apparatus comprising: format discriminating means for discriminating which one is.   The format discriminating means, as track information specific to the DVD video format, whether track 1 is open, whether track 2 is open, whether the number of open tracks is 2, whether there is provisional VMGI recording The recording apparatus according to claim 9, wherein the information is used.   The format discriminating means uses, as track information specific to the AVCHD format, information on whether or not track 1 is open, whether or not track 2 is open, and whether or not there is provisional FS recording. Item 10. The recording device according to Item 9. A recording method for recording video data on a disc-shaped medium in a plurality of formats,
A track information acquisition step of acquiring track information of the inserted disc-shaped medium when the disc-shaped medium is inserted;
And a format discriminating step for discriminating an application level disc format based on the track information acquired in the track information acquiring step. A recording method for recording video data on a disc-shaped medium in both DVD video format and AVCHD format,
A track information acquisition step of acquiring track information of the inserted disc-shaped medium when the disc-shaped medium is inserted;
Of the track information acquired in the track information acquiring step, the track information specific to the DVD video format or the track information specific to the AVCHD format is used to set the application-level disc format to the DVD video format or AVCHD format. And a format discriminating step for discriminating which is a recording method.   A recording step of setting a predetermined area on the disc-shaped medium and recording the video data for each area; and the track information is information indicating a configuration of the area set on the disc-shaped medium. The recording method according to claim 12.   The recording method according to claim 14, wherein the plurality of formats have different configurations of video data recorded in the area. A program for causing a computer to execute a process of recording video data on a disc-shaped medium in a plurality of formats,
A track information acquisition step of acquiring track information of the inserted disc-shaped medium when the disc-shaped medium is inserted;
A program for causing a computer to execute a format discriminating step for discriminating an application-level disc format based on the track information acquired in the track information acquiring step. A program for causing a computer to execute a process of recording video data on a disc-shaped medium in both a DVD video format and an AVCHD format,
A track information acquisition step of acquiring track information of the inserted disc-shaped medium when the disc-shaped medium is inserted;
Of the track information acquired in the track information acquiring step, the track information specific to the DVD video format or the track information specific to the AVCHD format is used to set the application-level disc format to the DVD video format or AVCHD format. A program for causing a computer to execute a format discrimination step for discriminating which format.   A computer-readable storage medium storing the program according to claim 16 or 17.

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