JP4309922B2 - Information recording medium - Google Patents

Description

  The present invention relates to an information recording medium (or data structure) suitable for recording and reproducing a digital stream signal (MPEG-TS) used in satellite digital TV broadcasting, terrestrial digital TV broadcasting, and the like.

  In recent years, TV broadcasting has entered the era of digital broadcasting in which high-definition programs are the main broadcast contents. An MPEG transport stream (hereinafter abbreviated as MPEG-TS as appropriate) is employed in digital TV broadcasting currently being implemented. In the field of digital broadcasting using moving images, MPEG-TS will continue to be used as standard.

  With the start of such digital TV broadcasts, the market needs of streamers that can directly record digital TV broadcast content (without going through digital / analog conversion) are increasing. A typical video stream recorder (D-VHS streamer) called D-VHS (registered trademark) is a commercially available streamer for recording the digital broadcast data (MPEG-TS or the like) as it is.

  When digital broadcast data is recorded in a stream, the digital broadcast MPEG-TS received by a tuner system (often called a set-top box called STB) is input to a D-VHS streamer via an IEEE 1394 cable, and the D-VHS Record on tape. Here, IEEE 1394 is an interface standard for exchanging commands and transmitting / receiving data.

  When broadcasting data is reproduced, recorded data (MPEG-TS, etc.) is read from a recorded D-VHS tape by a D-VHS streamer, and the read MPEG-TS is expanded in STB via an IEEE1394 cable. Send to the department. Thus, reproduction is performed.

  In the D-VHS streamer, since the broadcast bit stream is recorded as it is on the tape, a plurality of programs can be multiplexed and recorded on the tape. For this reason, when reproducing a multiplexed recorded program, the D-VHS streamer sends all the data as it is to the STB, whether it is reproduced from the beginning or from the middle. In this case, the user selects and reproduces a desired program from a plurality of multiplexed recorded programs by the operation of the STB.

  In addition, since the D-VHS streamer uses a tape as an information recording medium, the recorded contents cannot be randomly accessed even if there is no problem in sequential reproduction. Therefore, it becomes difficult to quickly jump to a desired position in a desired recorded program and reproduce it (difficulty of special reproduction).

  Apart from D-VHS, STB using a hard disk drive HDD has recently appeared in the market as a streamer for digital TV broadcasting. This saves stream data in the HDD and realizes excellent random accessibility. However, with this apparatus, the user cannot easily replace the HDD. For this reason, it is not suitable for storing a large amount of recorded data for a long period of time by making it into a library.

  As a powerful answer to the above-mentioned D-VHS problem (inaccessibility of random access / difficulty of special reproduction) and HDD problem (inability of media exchange), it has a large capacity such as DVD-RAM currently on the market. A streamer using disk media can be considered.

  As an example of the above-mentioned “streamer using DVD-RAM”, there is a “program recording / reproducing system” disclosed in the following Patent Document 1 (Patent Document 1).

  The “program recording / playback system” disclosed in Patent Document 1 is a broadcast signal received by receiving means, and broadcast identification information for identifying the received broadcast signal from a plurality of broadcast signals, and a channel number. And broadcast identification information specified on the basis of other information are recorded on the recording medium in association with each other.

  As a specific example of this streamer standard, there is a DVD stream recording standard (version 1.0) created in February 2001 (although not publicly available) (however, products using this standard are still commercially available). It has not been).

This streamer standard targets scrambled content, and also broadcasts performed by various broadcasting stations all over the world. For this reason, the minimum reproduction unit in the video content is performed with a data amount based on the ECC block. For this reason, when performing special reproduction, there is a possibility that an I picture that can be reproduced is not found even if data is read from the target address, and the reproduction start position may be largely deviated. That is, it has become a very difficult standard to perform special reproduction.
JP 2002-84479 A (summary, claim 1)

  The streamer standard is a standard in which a packet is recorded as it is regardless of the recorded contents. For this reason, even if the arrival time of the packet storing the recorded content at the time of reproduction is known, the reproduction time of the recorded content is not directly known. Therefore, it is not easy for the user to specify the playback start position on a time basis, and playback operations such as time search are inconvenient.

  There is a DVD video recording (DVD-VR) standard as a standard for disc recorders without inconvenience such as time search, and many products based on this video recording standard are currently on the market. In this video recording standard, there is time map information that does not exist in the previous streamer standard, and it is easy for the user to specify the playback start position on a time basis by this time map information.

  However, the video recording standard does not support stream recording of digital TV broadcasting. In order to record a digital broadcast by a recorder based on the video recording standard, an analog video signal once D / A converted is sent from the STB to the analog video input of the recorder, and is MPEG-encoded again in the recorder and DVD-RAM. Digital recording is performed on a disc or the like. Therefore, the current video recording standard cannot answer the user's need to air-check digital TV broadcasting, particularly high-definition programs, with the same quality.

  Furthermore, there are various broadcasting systems for digital broadcasting (for example, Association of Radio Industries and Businesses ... abbreviated as ARIB; Advanced Television Systems Committee ... abbreviated as ATSC; Digital Video Broadcasting as abbreviated). The above stream recording can be applied to any of these broadcasting systems. However, if contents of various method systems are mixed in one disc, the reproduction process becomes complicated and management thereof becomes troublesome.

  This invention is made | formed with respect to the said subject. The present invention provides a mechanism that can be easily managed for reproduction even when recording contents of various broadcasting systems are mixedly recorded on one information recording medium while supporting various broadcasting systems. It is an object.

In order to achieve the above object, according to one aspect of the present invention, in an information recording medium configured to record a digital stream signal conforming to a plurality of digital broadcasting schemes,
The information recording medium has a management area and a data area,
The management area is configured to record object management information for each of the plurality of object files,
The management area includes stream data management information,
The stream data management information includes medium management information, stream object management information, and program chain information.
The program chain information includes a plurality of program information,
Each program information includes a unique program index,
The stream object management information includes, as information about stream data belonging to the program specified by the program index, a code for identifying a broadcasting system of digital broadcasting, packet identification information of a program map table, packet identification information of a program clock reference, An information recording medium characterized by including:

  As described above, according to the present invention, management for reproduction is easy even when recording contents of various broadcasting systems are mixedly recorded on one information recording medium while supporting various broadcasting systems. A mechanism can be provided.

  Embodiments of an information recording medium according to the present invention will be described below with reference to the drawings. As used herein, the expression “and / or” is synonymous with “and / or” in English and is intended to indicate the case of “to and to” or “to or to”. .

  In broadcasting using cable such as digital TV broadcasting and the Internet, compressed video is broadcast (distributed). The transport stream (TS), which is a common basic format, is divided into a management data portion of a packet and a payload. The payload includes data to be reproduced in a scrambled state. On the other hand, according to ARIB (Association of Radio Industries and Businesses), which is one of the digital broadcasting systems, program related table PAT (Program Association Table), program map table PMT (Program Map Table) and service information SI (Inv). Is not scrambled. Here, various management information can be created by using the contents of the PMT and SI (SDT: Service Description Table, EIT: Event Information Table, BAT: Bouquet association Table).

  The reproduction target of the digital broadcast content includes MPEG video data, Dolby / AC3 (R) audio data, MPEG audio data, data broadcast data, and the like. Although not directly related to the reproduction target, information (program information, etc.) such as PAT, PMT, SI necessary for reproduction is included in the digitally broadcast content. The PAT includes packet identification information PID (Packet Identification) of the PMT for each program, and further, PIDs of video data and audio data are recorded in the PMT.

  As a normal reproduction procedure in a set top box STB (Set Top Box) or the like, for example, there is the following. That is, for example, when a user determines a program by electronic program guide EPG (Electronic Program Guide) information, the PAT is read at the start time of the target program, and the PID of the PMT belonging to the desired program is determined based on the data. In accordance with the PID, the target PMT is read, and the PID of the video and audio packets to be reproduced included therein is determined. Then, the video and / or audio attributes are read by PMT and SI, set to each decoder, and the video and / or audio data are cut out according to the PID and reproduced. Here, PAT, PMT, SI, etc. are transmitted every several hundreds ms to be used for intermediate playback.

  When these data are recorded on a disk medium such as a DVD-RAM, it is advantageous to record the broadcast data as digital data as it is. Therefore, ESR (Extended Stream Recording) is proposed in the present invention as a format for recording a stream as it is, which is different from the existing VR (Video Recording) format. This ESR is obtained by merging conventional SR (stream recording) with VR (video recording), and is compatible with stream recording of digital broadcasting while utilizing existing VR assets.

  Hereinafter, embodiments of the present invention based on the above ESR will be described in detail with reference to the drawings.

  FIG. 1 is a diagram for explaining a data structure according to an embodiment of the present invention. Examples of the disk-shaped information storage medium 100 (FIG. 1A) include recordable optical disks such as DVD-RAM, DVD-RW, and DVD-R, and recordable magnetic disks such as a hard disk. In the following, description will be continued by taking an optical disk such as a DVD-RAM as an example.

  The optical disc 100 has a lead-in area 110, a volume / file structure information area 111, a data area 112, and a lead-out area 113 from the inner circumference side toward the outer circumference side (FIG. 1B). A file system is stored in the volume / file structure information area 111. The file system includes information indicating which file is recorded where. The recorded content is stored in the data area 112 (FIG. 1C).

  The data area 112 is divided into an area 120 for recording general computer information and an area 121 for recording AV data. In the AV data recording area 121, an AV data management information area 130 having a file (VMG / ESMG file) for managing AV data and an object data (VOBS) file (VRO file) of the video recording standard are recorded. The VR object group recording area 122 and an extended stream object set recording area 131 in which an extended stream object set (ESOBS) corresponding to digital broadcasting is recorded (FIG. 1D). ). That is, in this embodiment, a digital broadcast stream object is recorded as an Estream object set ESOBS, which is a file different from the VR object (FIG. 1 (e)).

  ESOBS is composed of one or more ESstream objects (ESOB) 132. Each ESStream object (ESOB) 132 is configured by a collection of one or more data units (ESOBU: Extended Stream Object Unit) 134 that are access units to the disk 100 (FIG. 1 (f)). Each data unit (ESOBU) 134 is composed of one or more packet groups (Packet_Group) 140 composed of a collection of a plurality of TS packets (FIG. 1 (g)).

  In this embodiment, each packet group 140 is composed of a collection of 8 LBs (Logical Blocks). If one LB size is 2 kbytes, the size of each packet group 140 is 16 kbytes and is recorded on the disk in this unit.

  Each packet group 140 constitutes a packet recording area (DVD-TS packet recording area) 160 in extended stream recording (ESR) provided by the present invention (FIG. 1 (h)). The DVD-TS packet recording area 160 includes a packet group header 161, a plurality (for example, 85) of MPEG-TS packets 162, and a plurality (for example, 84) of packet arrival time difference information (IAPAT: Incremental Packet Arrival Time). It can be configured (FIG. 1 (i)). Details of the packet group 140 will be described later with reference to FIG.

  Here, DVD-Video (ROM Video) is divided into VIDEO-TS and DVD-RTR (recording / playback DVD) is divided into DVD-RTAV. Similarly, in new stream recording (ESR) compatible with digital broadcasting, a recording file is recorded in a directory (not shown) such as DVD_HDR. That is, the digital broadcast object is recorded in a separate file from the VR object. Further, as shown in FIG. 3 (a), a separate file is recorded for each digital broadcasting system, and as shown in FIG. 3 (b), one object file is used for all digital broadcasting systems. There are two methods that can be used (the object file is not divided for each digital broadcasting method).

  FIG. 2 is a diagram for explaining the relationship among the reproduction management information layer 10, the object management information layer 20, and the object layer 30 in the data structure according to the embodiment of the present invention. The management information (VMG / ESMG file) recorded in the AV data management information recording area 130 of FIG. 1 is playback management for managing playback procedures of both the recorded content based on the video recording standard and the stream recorded content based on the present invention. It has an information layer 10.

  That is, one or more cells 13 that are playback units of stream-recorded objects are collected to form a program 12, and one or more cells 13 * that are playback units of video-recorded objects are collected to form a program 12 *. The arrangement (reproduction procedure) of these programs 12, 12 * is managed by the management information (PGCI) of the program chain (PGC) 11.

  Here, whether playback is started from the middle of the cell 13 on the stream recording side or playback is started from the middle of the cell 13 * on the video recording side, the user designates the playback location by the playback time (PTS). Can be done.

  That is, when playback is started from the middle of the cell 13 on the stream recording side at the playback time (PTS), the extension in the stream object layer 30 is extended via the extended stream object information (ESOBI) 21 in the stream object management information layer 20. The stream object (ESOB) 132 is designated, and the extended stream object unit (ESOBU) 134 in the stream object layer 30 is designated via the extended stream object unit information (ESOBUI) 22 in the stream object management information layer 20. When the extended stream object (ESOB) 132 and its extended stream object unit (ESOBU) 134 are designated, the playback start location is specified. The extended stream object unit information (ESOBUI) 22 may be paraphrased as the global information 22.

  The extended stream object unit (ESOBU) 134 is composed of one or more packet groups 140. The extended stream object unit (ESOBU) 134 corresponds to, for example, one or two GOPs. Or, it is from the beginning of the I picture to the front of the integer number ahead of the I picture. However, if the GOP break is not found, it is divided in units corresponding to the data amount for a maximum of 1 second as the playback time. Thereby, overflow of each information field is prevented.

  Each packet group 140 is composed of 8 LB (16384 bytes), has a packet group header 161 at the head, and then a plurality of transport stream packets (TS_Packets) 162 and a plurality of packet arrival time difference information (IAPAT) 163. Be placed. Recorded contents of stream recording are stored in these TS packets 162.

  On the other hand, in the case where playback is started in the playback time (PTS) from the middle of the cell 13 * on the video recording side, the video object layer 35 is passed through the video object information (VOBI) 24 in the video object (VOB) management information layer 23. The video object (VOBU) 36 in the video object layer 35 is specified via the video object unit information (VOBUUI) 25 in the video object management information layer 23. When the video object (VOB) 36 and its video object unit (VOBU) 37 are designated, the playback start location is specified. The video object unit (VOBU) 37 is composed of a plurality of packs 38, and the recorded contents of video recording are stored in these packs.

  Although details will be described later, in the case where the reproduction is started from the middle of the cell 13 on the stream recording side, the reproduction start location can be designated by the time of the number of fields by ESOBU_PB_TM (not shown). When playback is started from the middle of the video recording cell 13 *, the playback start location can be designated by VOBU_PB_TM (not shown) in the time map information (TMAPI) defined by the video recording standard. It has become.

  2 can be summarized as follows. That is, stream recording management data (PGCI) can be recorded in the same file as video recording, stream recording can be controlled in common with video recording, stream recording and video recording can be linked in cell units, and stream recording and video recording The playback location can be specified in units of playback time.

  Regardless of whether the recording method is stream recording or video recording (VR), after a broadcast program (program) is recorded on the optical disc 100, playback of the program desired by the user is desired to be started at a desired time ( Requests for special playback such as time search and fast forward (FF) / fast reverse (FR) are frequently made. In order to satisfy such a requirement, special management information for managing recorded data is required.

  That is, the digital broadcast object is recorded as a stream of an extended stream object set (ESOBS: Extended Stream Object Set) 132 that is a separate file from the VR object. Then, as shown in FIG. 2, the management data of the extended stream object set ESOBS is recorded in a VMG file common to the VR, controlled in common with the VR, linked in units of cells, and designation of the playback location is specified in units of playback time. Is done.

  The structure of the extended stream object set ESOBS is composed of one or more extended stream objects (ESOB) 132, and the extended stream object (ESOB) 132 corresponds to, for example, one program. The extended stream object (ESOB) 132 is composed of one or more data units ESOBU (Extended stream object unit) 134, and the data unit (ESOBU) 134 is object data for 1 s (1 second) or one or two pieces of data. This corresponds to GOP data or one or more I pictures. However, if the transfer rate is low, 1 GOP may not be sent within 1 s. (In VR, the data unit can be set freely because it is internal encoding, but in the case of digital broadcasting, the encoding is a broadcasting station. It may be unclear if data will come).

  On the other hand, there are cases where the transfer rate is high and I pictures are frequently sent. In this case, the data unit (ESOBU) 134 is frequently divided, and accordingly, management information of the data unit (ESOBU) 134 is increased, and there is a possibility that the entire management information is enlarged. Therefore, the data unit (ESOBU) is divided by, for example, 0.4 s to 1 s (the minimum limit of 0.4 seconds applies to other than the last data unit ESOBU of the extended stream object ESOB), or divided by 1 GOP, or one or more It is appropriate to divide by I picture.

  One data unit (ESOBU) 134 is composed of one or more packet groups 140, and the packet group 140 is 8 LB (1 LB = 1 sector: 2048 bytes). The packet group 140 includes a packet group header 161, TS packets 162 (85 packets), and IAPAT (Incremental Packet Arrival Time) 163 (84 packets).

  The arrival time of each TS packet is the arrival time of an ATS (Arrival Time Stamp) in the packet group header for the first TS packet in the packet group. For the second TS packet, the arrival time is represented by the value obtained by adding IAPAT to this ATS. Furthermore, from the third onward, it is represented by a value obtained by adding IAPAT to the previous arrival time. As described above, the arrival time of the second and subsequent TS packets is expressed by an accumulation of IAPAT, which is a kind of difference information, so that IAPAT can be expressed by a relatively small amount of data (3 bytes). Compared to expressing time in ATS, the overall data volume can be saved.

  As will be described later with reference to FIG. 16, the packet group header 161 includes an arrival time ATS151X of the first TS packet of the packet group, display control information DCI (Display Control Information) 153X, copy generation management information CCI (Copy Control Information). 154X, DCI / CCI validity information 152X, manufacturer information MNFI (Manufacturer's information), reproduction time stamp PTS (Presentation time stamp), and the like. In the navigation management information file (VMG file), as shown in FIG. 3A, an extended stream object (ESOB) file is divided for each broadcasting system (ARIB.SRO file, ATSC.SRO file, DVB.SRO file). And one object file ***. Two methods of management by SRO are conceivable. In the case of (b), the management information is divided and processed so as to be managed for each method.

  Here, the management information will be described below with reference to FIGS.

  FIG. 4 is a diagram for explaining an example of how a part (RTR_VMGI) of one piece of management information (RTR_VMG) recorded in the AV data management information recording area 130 shown in FIG. 1 is configured. .

  Here, stream recording in this embodiment is abbreviated as ESR (Extended Stream Recording), and video recording is abbreviated as VR (Video Recording). Then, the ESR data management information is stored in the RTR_VMG 130 and managed in the same manner as the VR data, as shown in FIG.

  The RTR_VMG 130 includes a video manager information (RTR_VMGI) 1310, a stream file information table (ESFIT: Extended Stream Information Table) 1320, (original) program chain information (ORG_PGCI) 1330, and playlist information (PL_SRPT; or user-defined). Program chain information table: UD_PGCIT) 1340.

  The playlist and the user-defined program chain have substantially the same meaning although having different names, and are synonymous with the playlist and the user-defined program chain used in the video recording standard. Therefore, in the following description, playlist-related information (PL_SRP, etc.) and user-defined program chain-related information (UD_PGCIT_SRP, etc.) are written together as appropriate.

  The RTR_VMGI 1310 includes disc management identification information (VMG_ID / ESMG_ID) 1311, version information (VERN) 1312, E stream object management information start address (ESFIT_SA) 1313, program chain information start address (ORG_PGCI_SA) 1315, and playlist information. A start address (UD_PGCIT_SA) 1316 is included. The management information of the ESR stream is stored in the ESFIT 1320.

  FIG. 5 is a diagram illustrating an example of how the ESFIT 1320 in FIG. 4 is configured. This ESFIT 1320 includes stream file information table information general information (ESFITI_GI) 1321, one or more ESOB stream information / video status information (ESOBI_VSTI # 1 to #m) 1322, and one or more ESOB stream information / audio status information (ESOBI_ASTI). # 1 to #L) 1323, one or more stream file information / search pointer (ESFI_SRP) 1324, and stream file information ESFI (Extend Stream File Information) 1325. The ESFIT_GI 1321 can also be composed of the number of stream objects (ESOB), the number of VSTIs, the number of ASTIs, the end address of the ESFIT, and the like.

  The video status information VSTI and the audio status information ASTI are attribute information of a stream in the stream object (ESOB), the video attribute information can be expressed by VSTI, and the audio attribute information can be expressed by ASTI. In the VR standard, the stream information STI constitutes one STI as a set of video and audio. However, in the case of digital broadcasting, there is a possibility that a plurality of videos and / or audios are included in a broadcast signal. For this reason, the STI is not always represented by the same video / audio pair as in the VR standard. Therefore, if the video and audio are managed as separate attribute information, the total amount of STI information can be reduced. Details of the video attribute information (V_ATR) and the audio attribute information (A_ATR) will be described later with reference to FIG.

  In one embodiment of the present invention, a data structure in which VR management information VMG and ESR management information ESMG are combined is possible. Although not shown here, the stream file information table (ESFIT) is arranged after the movie AV file information table (M_AVFIT), and after ESFIT, the original program chain information (ORG_PGCI), the user-defined PGC information table (UD_PGCIT), and text A data manager (TXTDT_MG) and a manufacturer information table (MNFIT) can be arranged. By adopting such a management information data structure (similar to the video recording VR standard), existing control software assets developed for recorders based on the existing VR standard can be used effectively (with some modifications). It becomes easy.

  FIG. 6 is a diagram for explaining an example of how the ESFITI_GI 1321 and the ESFI 1325 in FIG. 5 can be configured.

  The ESFI 1325 forms a separate table for each broadcasting system. Each ESFI 1325 is composed of an ESFI_GI 13251, an ESOBI search pointer 13252, and an ESOBI 13253, and information APP_NAME (FIG. 51) indicating an application name is set in the ESFI_GI as shown in FIG. ing.

  The ESFITI_GI 1321 includes information 13211 indicating the number of stream objects (ESOB), information 13212 indicating the number of ESOB_VSTI, information 13213 indicating the number of ESOB_ASTI, information 132134 indicating the number of ESFI_SRP, and information indicating the end address of ESFIT. 13215 is included.

  The ESFI 1325 includes general information ESFI_GI13251, one or more stream object information (ESOBI # 1 to #k) 13253, and one or more search pointers (ESOBI_SRP # 1 to #k) 13252 for these (ESOBI # 1 to #k). It is configured to include.

  FIG. 7 shows an example of how the contents of the video attribute information (V_ATR) 13221 included in the stream information ESOBI_VSTI 1322 and the contents of the audio attribute information (A_ATR) 13231 included in the stream information ESOBI_ASTI 1323 can be configured. It is a figure explaining.

  There are two types of attribute information V_ATR13221 in the ESOBUI_VSTI 1322, and in Example 1, the bit configuration is basically the same as that of the VR standard, but an I / P (Interlace / Progressive) identification flag and an HD (High Definition) correspondence , 1280 × 720 and 1920 × 1080 resolution information are added. On the other hand, Example 2 is configured to use SI (Service Information). That is, the data on SI is set in V_ATR without being processed, and the value of the component descriptor is used as it is for setting the stream content and the component type.

  Similarly to V_ATR, the attribute information A_ATR 13231 of ESOBI_ASTI 1323 is basically the same bit configuration as VR, but a sampling frequency of 96 kHz is set for HD, and AAC (Advanced Audio Coding) and DTS are set as compression modes. (Digital Theater Systems; trademark) and the like are added, and in Example 2, the value of the component descriptor is set to A_ATR as it is. V_ATR 13221 indicates information indicating the video compression mode (MPEG-1, MPEG-2, MPEG-4, etc.), information indicating the TV system (NTSC, PAL, SD, HD, etc.), and an aspect ratio. It includes information, information indicating video resolution, and interlace / progressive scan identification information I / P.

  Here, if the information indicating the video compression mode is “0”, MPEG-1 is indicated, if “1”, MPEG-2 is indicated, and if “2”, MPEG-4 (H264) 1 is indicated. Indicated. If the information indicating the TV system is “0”, the NTSC system of 525 scanning lines / 60 frames per second is shown. If “1”, the PAL system of 625 scanning lines / 50 frames per second is shown. When the information indicating the aspect ratio is “0”, the aspect ratio = 4: 3 is indicated, and when the information indicating the aspect ratio is “1”, the aspect ratio = 16: 9 is indicated. As for the identification information I / P, “0” indicates progressive, and “1” indicates interlace. If the information indicating the video resolution is “0”, it indicates that the horizontal × vertical resolution is 720 × 480, and if “1”, the horizontal × vertical resolution is 704 × 480, “2” indicates that the horizontal × vertical resolution is 352 × 480, “3” indicates that the horizontal × vertical resolution is 352 × 240, and “4” indicates that It is indicated that the horizontal × vertical resolution is 544 × 480, “5” indicates that the horizontal × vertical resolution is 480 × 480, and “6” indicates that the horizontal × vertical resolution is 1280. It is indicated that the number is × 720, and “7” indicates that the horizontal × vertical resolution is 1920 × 1080. Here, 720 × 480 progressive or 1920 × 1080 interlaced or progressive corresponds to the HD resolution equivalent to HD. Other than that, it corresponds to SD resolution.

  Similarly to ESOBI_ASTI 1323, A_ATR 13221 includes information indicating an audio compression mode (AC-3, MPEG-1, MPEG-2 without an extended bitstream, ordinary MPEG-2, LPCM, AAC, DTS, etc. ), Information indicating the quantization / DRC system, and information indicating the number of audio channels.

  Here, if the information indicating the audio compression mode is “0”, AC-3 is indicated; if “1”, MPEG-1 or MPEG-2 without an extended bitstream is indicated; MPEG-2 is indicated, “3” indicates LPCM, “4” indicates AAC, and “5” indicates DTS. If the information indicating the quantization / DRC method is “0”, the sampling frequency fs = 48 KHz is indicated. If “1”, the sampling frequency fs = 96 KHz is indicated. If the number of audio channels is “0” to “7”, 1ch to 8ch are indicated, and if “8”, dual / mono 2ch is indicated.

  FIG. 8 is a diagram for explaining an example of how the ESFI_GI 13251 and ESOBI 13253 in FIG. 6 can be configured.

  The ESFI_GI 13251 includes information 132511 indicating the number of stream object information / search pointer (ESOBI_SRP), information 132512 indicating the application name APP_NAME, information 132513 indicating the ESOB file name, and information 132514 indicating the ESFI end address. Has been.

  The ESOBI 13253 includes stream object general information (ESOB_GI) 132531, one or more ESOB elementary stream information (# 1 to #n) 132532, information 132533 indicating seamless information SMLI, information 132534 indicating audio gap information AGAPI, Information 132535 indicating time map general information TMAP_GI, information 132536 indicating elementary stream map information ES_MAPI (# 1 to #n), information 132537 indicating the number of ES groups, and ES group information (# 1 to #n) The information 132538 shown in FIG.

  Here, the storage location of the application name APP_NAME132511 is not limited to ESFI_GI13251. When the APP_NAME is unified into one type for the entire disk, it may be stored in ESFI_GI and / or VMGI_MAT (part of management information in the RTR_VMGI 1310 in FIG. 4).

  FIG. 9 is a diagram for explaining an example of how the contents (especially ESOB_GI 132531) of ESOBI 132531 shown in FIG. 8 can be configured.

  Stream object general information (ESOBI_GI) 132531 includes an ESOBI type (ESOBI_TY) 13243100, a recording start time (ESOB_REC_TM) 13243101 of a stream object (ESOB), a recording time subunit (ESOB_REC_TM_SUB) 13243102 of a stream object (ESOB), It includes a PTS (playback time) or ATS (arrival time) at the start of an object (ESOB) and a PTS or ATS at the end of a stream object (ESOB).

  The ESOBI_GI 132531 further includes a PCR packet shift PCR_PKT_SHIFT 13243105, a packet size AP_PKT_SZ (188 bytes for a current TS packet) 13243106, a packet group size PKT_GRP_SZ (a size corresponding to 85 packets for a current TS packet) 13243107, and a transport stream identifier TS_ID 13243109, network packet identifier NETWORK_PID 13243110, PMT packet identifier PMT_PID 13243111, service packet identifier SERVICE_PID 13243112, format identifier Format Identifier 13243113, Version (in the case of external input) Register station descriptor value indicating the type of data, in the case of an internal tuner, a tuner-specific data type is set) 13243114 and SOB representative packet identifier SOB_REP_PID (PID of a representative stream of SOB to be reproduced, or component group) In the case of a representative PID, the recording start time of ESOBI_GI, the PTS or ATS of the start / end of the stream object (ESOB) 13243115, the PCR packet identifier PCR_PID 13243115, and the number of ESOB elementary streams ESOB_ES_Ns 13243116 Including.

  When the application name APP_NAME is different for each stream object (ESOB) (when there are a plurality of application names APP_NAME, that is, when a plurality of broadcast formats are recorded), a part of the ESOBI configuration (for each stream object (ESOB)) ( Transport stream identifier TS_ID 13243109, network packet identifier NETWORK_PID 13243110, PMT packet identifier PMT_PID 13243111, service packet identifier SERVICE_PID 13243112, format identifier Format Identifier 13243113, Version 13243114, and SOB representative packet identifier SOB 11 When a PCR packet identifier PCR_PID13243115, it is conceivable that a component number ESOB_ES_Ns13243116) of ESOB elementary stream changes.

  The application name APP_NAME is a County ID (a code for identifying a country: eg: telephone country code 01 = US, 81 = Japan,...), Authority ID (broadcasting format: 01 = ARIB, 02 = ATSC, 03 = DVB), Packet Format. (Packet format of stream: 01 = MPEG_TS...), Network type (network type 01 = terrestrial digital, 02 = CS, 03 = BS digital ...), broadcast system version (10 = 1.0, 11 = 1.1). …). Of these, the County ID, Authority ID, and Packet Format must be provided by default in the device (STB, etc.). In other cases, the County ID, Authority ID, and Packet Format may be configured from the received data. Is possible. When the broadcasting method is input from another device with digital input (1394 I / F), the device's own method is changed from the broadcasting method (when changed to its own partial TS), There is also a possibility of being recorded and transmitted. In such a case, it may be possible to respond by attaching the identifier of the device to the NETWORK type.

  It is conceivable that the object data of the stream object (ESOB) is also available for the usable broadcasting system. In such a case, a plurality of ESFIs are provided for each method, and the file name of the object is set in ESFI_GI in each ESFI, thereby determining a file name for each broadcasting method by default and a method name ( A method of recording only APP_NAME) is conceivable. A specific example of the contents of APP_NAME that can include information (Authority ID) for identifying a plurality of systems will be described later with reference to FIG.

  FIG. 10 is a diagram for explaining an example of how the contents (especially, ESOB elementary stream (ES) I132532, ES group I132538, MAP_GI132535, and ES_MAPI132536) shown in FIG. 8 can be configured.

  In FIG. 10, ESOB_ESI 132532 includes a stream type (STREAM_TYPE) 1324321, a PID (ESOB_ES_PID) 1342322 of the stream, and a stream information number 1343323. As the number of stream information 1324323, VSTI number (ESOB_ES_VSTIN) is set for Video, ASTI number (ESOB_ES_ASTIN) is set for Audio, and 0xffff is set in other cases. Here, the type written in the PMT can be adopted as the stream type 1324321.

  Elementary stream group information (ES_group I) 132538 includes the number of elementary streams (ES_Ns) 1324381 and the ESID of ESOB_ES (ESOB_ES_PID) 1324382. The first ES_group I # 1 is configured to include the main group.

  The MAP_GI 132535 includes an address offset ADR_OFS (LOG block accuracy LB unit) 132241 indicating the start address of the SOB, ESOB_S_PKT_POS (start packet number in the ESOB LB) 132242, ESOB_E_PKT_POS (end of the stream object L in the ESB) Number) 132243, and ES_MAP number (ES_MAP_Ns) 132244. ESOB_S_PKT_POS and ESOB_E_PKT_POS can be handled as packet number information of the corresponding stream object (ESOB).

  The ES_MAPI 132536 includes general information ES_MAP_GI 132261 of elementary stream map information and ESOBU entry information (ESOB_ENT) 132262.

  FIG. 11 is a diagram for explaining an example of how the contents of ES_MAP_GI 132261 shown in FIG. 10 can be configured.

  ES_MAP_GI132261 is ES_PID (PID of the corresponding elementary stream) 1322611, ESOBU entry number 13223612, 1ST_ESOBU_S_PKT_POS (TS packet number of the first TS packet of the first ESOBU in the LB) 132U13 from the head of the packet type 13226E , And includes a PCR interval 1322261 shown in ESOBU.

  There are three types of ESOBUs: when there is video data, when there is no video data and there is audio data, and when there is only other information. In the example of FIG. 11, the types of ESOBU are “00” and “01”, respectively. , “10”.

  As for the PCR interval, when it is “00”, it indicates that the PCR position immediately before (1 PCR before) the reference picture REF-PIC (I picture) is indicated in ESOB_ENT, and when it is “01” Indicates that the PCR position before 2 PCR of REF-PIC is indicated in ESOB_ENT, and when it is “10”, it indicates that the PCR position before 3 PCR of REF-PIC is indicated in ESOB_ENT. In the case of 11 ″, other instruction states are indicated.

  FIG. 12 is a diagram illustrating an example of how the contents of ESOBU_ENT132262 shown in FIG. 11 can be configured.

  There are three types of ESOBU entry information (ESOBU_ENT) 132262 according to the ESOBU types (00, 01, 10) shown in FIG.

  When there is video data, ESOBU_ENT132261 includes 1st_Ref_PIC_SZ (LB unit) 132231 that is the last address information from the ESOBU head of the first reference picture (I picture or the like) in the entry, ESOBU playback time (number of fields) ESOBU_PB_TM132232 , ESOBU size (LB unit) ESOBU_SZ132233 and PCR position (PCR_POS) 132234 may be included. Here, PCR_POS represents the PCR position at the position indicated by the PCR interval by the number of addresses from the head of ESOBU, and is set to 0xffff when there is no PCR.

When PCR exists, the number of logical blocks (LB number) at this PCR position is
PCR_POS × 2 ^ PCR_POS_SHIFT, or PCR_POS × 2exp (PCR_POS_SHIFT) (1)
Can be expressed as Here, the PCR is the position of the PCR before several positions indicated by the PCR interval before the position of the reference picture.

  By using the “exponent” of 2 together with the PCR position expression as in the expression (1), it is possible to express a large address with information “PCR_POS_SHIFT” having a relatively small number of bits.

  If there is no video data but audio data, ESOBU_ENT132262 is the last address information from the beginning of ESOBU of the first audio frame in the entry (same as above) 1st_Ref_PIC_SZ, ESOBU playback time (number of fields) ESOBU_PB_TM and ESOBU size (Same as above) ESOBU_SZ and PCR_POS can be included. In the case of only other information, entry information is not configured, and therefore ESOBU_ENT132262 is all filled with FF, for example.

  The above is summarized as follows.

<1> When there is video data:
Whether ESOBU is delimited by (a) a place where random access is possible (the beginning of a GOP or the beginning of an I picture), or (b) a section other than the last ESOBU (within the SOB) is delimited by a playback time of a minimum of 0.4 seconds , (C) Divide by playback time of maximum 1 second.

    1st_Ref_PIC_SZ is the number of logical blocks (number of LBs) from the top of the ESOBU to the end of REF_PIC (I picture). When there is no Ref_PIC in the corresponding ESOBU (or when Ref_PIC is not found), for example, 1st_Ref_PIC_SZ = 0xffffffff.

    PCR_POS represents the PCR position at the position indicated by the PCR interval by the number of addresses from the head of ESOBU, and is expressed in units of the number of logical blocks (number of LBs) in the equation (1). When there is no PCR in the corresponding ESOBU, for example, PCR_POS = 0xffff is set.

<2> When there is no video data and there is audio data:
The ESOBU is divided by a playback time of 1 second, for example.

    1st_Ref_PIC_SZ can be expressed by, for example, the final number of TS packets of the head audio frame of the ESOBU.

    PCR_POS represents the PCR position at the position indicated by the PCR interval by the number of addresses from the head of ESOBU, and is expressed in units of the number of logical blocks (number of BLs) in the above equation (1). When there is no PCR in the corresponding ESOBU, for example, PCR_POS = 0xffff is set.

<3> When there is no video data or audio data but there is data broadcasting:
The ESOBU is divided by a playback time of 1 second, for example.

    1st_Ref_PIC_SZ is fixed to 0xffffffff, for example.

    PCR_POS is fixed to 0xffffffff, for example.

  FIG. 13 is a diagram for explaining an example of how another one (stream data management information RTR_ESMG) of the management information recorded in the AV data management information recording area 130 shown in FIG. 1 can be configured. That is, the stream data management information recording area 130, which is a part of the AV data management information recording area 130, includes disc management information (ESMGI_MAT) 1310, stream object management information (ESFIT; global information) 1320, and program chain information (ORG_PGCI). ) 1330 and play list information (UD_PGCIT / PL_SRPT) 1340.

  The playback information is PGC information, which is the same as the normal VR format, and the original ORG_PGC information is automatically created by the device during recording and set in the recording order, and the user-defined UD_PGC information is created according to the playback order added freely by the user. , Called a playlist. These two formats are common at the PGC level, and are common at the PGC level. The PGC format is shown in FIG.

  The program chain information (ORG_PGCI) 1330 is allowed to be mixed at the PGC level, and includes program chain information (ORG_PGCI) 1331 when having a common ORG_PGC. When mixing is prohibited and a plurality of ORG_PGCs are included, program chain table information (ORG_PGCT) 1332, one or more program chain information (ORG_PGC Info # 1 to #s) 1335, and one or more program chain search pointers (ORG_PGC) Search pointers # 1 to #r) 1333 are included. The data structure of the ORG_PGCI 1330 has the same form as the video recording standard, but the contents (cell information CI) are different (this will be described later with reference to FIG. 15).

  FIG. 14 is a diagram for explaining an example of how the contents of the playlist information (or user-defined PGC information table) 1340 shown in FIG. 13 can be configured.

  The user-defined PGC information table (UD_PGCIT) 1340 includes a user-defined PGC information table UD_PGCITI 1341, one or more user-defined PGC search pointers 1342, and one or more user-defined PGC information 1343.

  FIG. 15 is a diagram illustrating an example of how the components of the program chain information ORG_PGCI 1330 shown in FIG. 13 can be configured.

  If the broadcasting system is different, it is necessary to change the decoder settings, and connection may not be possible. Therefore, there is a possibility that coexistence of multiple types of stream objects (ESOB) may be prohibited in the playlist. In this case (when mixing in a playlist unit is prohibited and mixing between playlists is allowed), program chain information ORG_PGC is required for each method, and there are a plurality of ORG_PGCs, and the playback device is compatible with the method. ORG_PGC is reproduced. In that case, it is necessary to set an ESFI number or APP_NAME in the program chain general information PGCI_GI 1331. On the other hand, when mixing is permitted in the program chain, it is set at a location corresponding to the permitted level. When mixing is permitted in units of programs and playlists, it is necessary to set ESFI number or APP_NAME in the cell information CI 1334 when allowing mixing in units of cells. The ESFI number or APP_NAME to be set may be added with the file name of the ESOBS.

  The program chain general information PGCI_GI 1331 includes the number of programs (PG_Ns) 13311, the stream file information (ESFI) number, or APP_NAME (when mixing is prohibited) 13312 and the number of cells in the program chain (Cell_SRP_Ns) 13313. .

  Each program information PGI 1332 includes a program type (PG_TY) 13321, a stream file information (ESFI) number, or APP_NAME (when mixing is permitted in units of programs or playlists) 13322, the number of cells in a program (C_Ns) 13323, and a program It includes content information (primary text information PRM_TXIT13324, item text search pointer number IT_TXT_SRPN13325, representative image information REP_PICTI13326, editor ID 13327, program index (PG_INDEX) 13328, manufacturer information MNFI13329).

  Each cell information CI 1334 includes a cell type (C_TY) 13341, a stream file information (ESFI) number, or APP_NAME (when mixing is permitted in cell units) 13342, a corresponding ESOB number 13343, an ID 13344 to be referred to, and a cell EPI. It includes a number 13345, a cell start PTS / ATS (reproduction time stamp / ESOBU arrival time) 13346, a cell end PTS / ATS 13347, and an EPI 13348.

  In the cell information, the ESOB type is added to the CELL type, the ESOB number is designated, and the reproduction start time and end time are designated. Here, it is conceivable that the reproduction start time and end time can be represented by two types of PTS or ATS. Furthermore, as the ID to be referred to, there are a method of setting a PID (or a value of a component tag) of a stream representative of a stream to be reproduced, and a method of setting the ID of a component group in the case of multi-view TV or the like. Further, in the case of 0xffff, there are a method of multi-displaying on a sub-screen and a method of preferentially displaying a preset group (or default main group) and switching later (during playback).

  In addition, information indicating which manufacturer's device has been edited is added by putting the manufacturer ID of the device that has edited in the PGI 1332. As a result, the usage status of the MNI information used by each manufacturer can be understood, and if each device is rewritten by another company, it can be seen that the information in the MNI is not reliable. After editing, the MNI indicates that it is necessary to construct a new one.

Also, a unique ID number (program index 13328) is assigned to the PGI 1332 so that the program can be specified with a number that does not change even if the program on the way is deleted. Here, examples of the cell type 13341 include the following:
C_TY = "0" ... VR video (M_VOB);
C_TY = “1”... VR still image (S_VOB);
C_TY = “2”: Streamer (ESOB).

Examples of IDs to be referenced include the following:
(A) the PID or component tag of the video to be played (or the audio PID if there is no video);
(B) Describe Component_Group_id (ARIB) and 0xffff to indicate all views.

  There is a possibility that the location of the ESFI number / APP_NAME differs depending on the level at which mixing is permitted.

When mixing is prohibited in the PGC: PGCI_GI;
When mixing in PL and PG is permitted: PGI;
When mixing is allowed in a cell: CI.

  FIG. 16 is a diagram illustrating an example of how the stream object data unit (ESOBU) 134 illustrated in FIG. 1 or 2 can be configured.

  One ESOBU 134 is composed of one or more packet groups 140, and each packet group 140 is composed of, for example, 8 packets (1 packet = 1 sector: 2048 bytes).

  Each packet group 140 includes a packet group header (152 bytes) 161, one or more (here, 85) MPEG-TS packets (188 bytes) 162, and one or more (here, 84) IAPAT (Incremental Packet Arrival). (Time; 3 bytes) 163.

  The packet group header 161 includes a packet arrival time (ATS) 151X, information indicating the validity of the following DCI and CCI (DCI_CCI_SS) 152X, display control information (DCI; Display Control Information) 153X, copy generation management information ( Alternatively, it includes copy control information CCI (Copy Control Information) 154X, PCR position information (PCRI) 155X, and manufacturer information (MNI (or MNFI); Manufacturer's information) 156X. ing. The packet group header 161 may include an embodiment further including reproduction time information (PTS).

  Each MPEG-TS packet 162 includes a 4-byte header 170, an adaptation field, and / or a payload 180. The header 170 includes a synchronization byte 171, a transport error indicator 172, a payload unit start indicator 173, a transport priority 174, a packet identifier (PID) 175, a transport scramble control 176, and an adaptation field. A control 177 and a continuity index 178 are included.

  By the way, in a method for broadcasting (distributing) a compressed video such as digital TV broadcasting or broadcasting using a wire such as the Internet, a TS stream (FIG. 16) which is a common basic format is a packet management data portion. (170) and payload (180).

  The payload includes data to be reproduced in a scrambled state. According to the digital broadcasting standard ARIB, PAT (Program Association Table), PMT (Program Map Table), and SI (Service Information) are not scrambled. Also, various management information can be created using PMT and SI (Service Description Table, Event Information Table, and Bouquet Association Table).

  The reproduction target includes MPEG video data, Dolby • AC3 (R) audio data, MPEG audio data, data broadcast data, and the like. Also, although there is no direct relationship with the playback target, information necessary for playback includes information (program information, etc.) such as PAT, PMT, and SI.

  The PAT includes a PID (Packet Identification) of the PMT for each program, and the PID of video data and audio data is recorded in the PMT.

  Thereby, as a normal reproduction procedure of STB (Set Top Box), the following becomes possible. That is, when the user determines a program based on EPG (Electronic Program Guide) information, the PAT is read at the start of the target program, and the PID of the PMT belonging to the desired program is determined based on the data. Then, the target PMT is read according to the PID, and the PID of the video and audio packets to be reproduced included therein is determined. Then, the video and audio attributes are read out by PMT and SI, set in each decoder, and the video and audio data are cut out according to the PID and reproduced. Here, PAT, PMT, SI, etc. are transmitted every several hundreds ms to be used for intermediate playback.

  When these data are recorded on a disk medium such as a DVD-RAM, it is advantageous to record the broadcast data as digital data as it is.

  If multiple streams are recorded simultaneously, the number of streams recorded in the SOBI is stored, the PMT corresponding to each stream is stored, and special playback map information (map group information) is stored for each stream. The stream number to be reproduced (channel number or PMT PID) may be recorded in the cell information.

  FIG. 17 is a diagram for explaining an example of how the arrival time (ATS) of a packet included in the packet group header shown in FIG. 16 can be configured. Here, for example, 6 bytes are allocated to the ATS 151X, the PAT base (for example, 90 kHz counter value) is expressed by 38 to 0 bits, and the PAT extent (for example, 27 MHz counter value) is expressed by 8 to 0 bits. .

  The actual arrival time PAT is expressed by PAT_base / 90,000 Hz + PAT_exten / 27,000,000 Hz. As a result, the ATS 151X can be expressed finely in units of video frames, for example.

  FIG. 17 also illustrates an example of how the validity information (DCI_CCI_SS) 152X included in the packet group header illustrated in FIG. 16 can be configured. Here, 1-bit DCI_SS indicates invalidity by “0” and indicates validity by “1”. The 3-bit CCI_SS indicates “0” to indicate invalidity, “1” to indicate that only the APS is valid, “2” to indicate that only the EPN is valid, and “3” to indicate that the APS and EPN are valid. “4” indicates that only CGMS is valid, “5” indicates that CGMS and APS are valid, and “6” indicates that CGMS and EPN are valid. , “7” indicates that all three APS, EPN, and CGMS are valid.

  FIG. 17 also illustrates an example of how the display control information (DCI) 153X included in the packet group header illustrated in FIG. 16 can be configured. Here, 11 bytes are allocated to DCI 153X. The breakdown is that a reserve bit (3 bits) is provided at the head, and then aspect information (1 bit) is repeated 85 times. Here, the aspect information is, for example, “0” indicating an aspect ratio of 4: 3 and “1” indicating an aspect ratio of 16: 9.

  FIG. 17 also illustrates an example of how the copy generation management information (or copy control information CCI) included in the packet group header shown in FIG. 16 can be configured. The breakdown of CCI154X is that reserve bits (7 bits) are provided at the beginning, and then a set of digital copy control information (2 bits), analog copy control information (2 bits), and EPN (1 bit) is repeated 85 times. is doing.

  Here, the digital copy control information indicates, for example, copy prohibition when “00”, copy permission once only when “01”, and copy free when “11”. The analog copy control information is, for example, “0” indicating copy free (no analog protection system APS), “1” indicating copy prohibition (APS type 1 added), and “2”. Indicates copy prohibition (APS type 2 addition), and “3” indicates copy prohibition (APS type 3 addition). The value of this copy control information can be set based on the value recorded in the service information SI in the stream (content).

  In the 1-bit EPN, “0” indicates EPN off, and “1” indicates EPN on.

  FIG. 17 also illustrates an example of how the packet arrival time increment (IAPAT) 163 included after the packet group header is configured in the packet group shown in FIG. Here, for example, 3 bytes are allocated to IAPAT 163, 14 to 0 bits of which represent a PAT base (for example, a counter value of 90 kHz), and 8 to 0 bits of which represent a PAT extent (for example, a counter value of 27 MHz). Yes. Since the IAPAT 163 only needs to represent an increment (change) from the ATS 151X, not the absolute time, the IAPAT data amount may be smaller than the ATS data amount.

  The implementation arrival time PAT in IAPAT 163 is expressed as ATS + PAT_base / 90000 Hz + PAT_exten / 27,000,000 Hz. As a result, the IAPAT 163 can be expressed finely in units of video frames, for example. As another form, a difference from the arrival time of the previous TS packet is used (a new PAT is obtained by adding PAT_base / 90000 Hz + PAT_exten / 27,000,000 Hz to the previous PAT). Is also possible.

  Note that “PAT” in the above “PAT_base and PAT_exten” does not mean “Program Association Table” but “Packet Arrival Time (packet arrival time)”.

  FIG. 17 also illustrates an example of how the PCR position information (PCR_LB number number etc.) 155X included in the packet group header shown in FIG. 16 can be configured. Here, position information 155X of PCR (Program Clock Reference) is used as PCR information (PCRI).

  The PCR position information 155X is expressed by 2 bytes, for example. The PCR packet number can be expressed by these 2 bytes. This PCR packet number can be represented by the number of LBs from the top of the ESOBU closest to the first reference picture (for example, the first I picture) 1st_Ref_PIC to the logical block LB with the PCR. The first 1 bit is a ± flag (for example, “0” represents “+ direction” and “1” represents “− direction”). When there is no PCR, the PCR_LB number number is, for example, “0xffff”.

  FIG. 18 illustrates an example of an apparatus for recording and reproducing AV information (digital TV broadcast program, etc.) on an information recording medium (optical disc, hard disk, etc.) using the data structure according to an embodiment of the present invention. It is a block diagram.

  As shown in FIG. 18, the apparatus (digital video recorder / streamer) includes an MPU unit 80, a key input unit 103, a remote control receiving unit 103b that receives user operation information from the remote control 103a, a display unit 104, a decoder unit 59, an encoder. Unit 79, system time counter (STC) unit 102, data processor (D-PRO) unit 52, temporary storage unit 53, disk drive unit 51 for recording / reproducing information on / from recordable optical disc 100 such as a DVD-RAM , Hard disk drive (HDD) 100a, video mixing (V mixing) unit 66, frame memory unit 73, analog TV D / A conversion unit 67, analog TV tuner unit 82, terrestrial digital tuner unit 89, and satellite antenna 83a STB (Set Top B ox) unit 83. Further, this apparatus includes a digital I / F 74 such as IEEE1394 in order to support digital input / output as a streamer.

  Note that the STC unit 102 is configured to perform clock counting on a 27 MHz basis in accordance with PAT_exten in FIG.

  The STB unit 83 decodes the received digital broadcast data to generate an AV signal (digital), and the AV signal is transmitted to the TV monitor via the encoder unit 79, decoder unit 59, and D / A converter 67 in the streamer. The contents of the received digital broadcast can be displayed. Alternatively, the STB unit 83 is configured to be able to send the decoded AV signal (digital) directly to the V mixing unit 66 and send the analog AV signal to the TV monitor 68 via the D / A converter 67 therefrom. ing.

  By the way, since the apparatus of FIG. 18 constitutes a recorder having both video recording and stream recording functions, a configuration unnecessary for video recording (such as IEEE 1394 I / F) or a configuration unnecessary for stream recording (for AV input). A / D converter 84, audio encoding unit 86, video encoding unit 87, etc.).

  The encoder unit 79 includes an A / D converter 84, a video encoding unit 87, an input switching selector 85 to the video encoding unit 87, an audio encoding unit 86, a sub-picture encoding unit, and a formatting unit (not shown). 90 and a buffer memory unit 91.

  The decoding unit 59 also includes a separation unit 60 incorporating a memory 60a, a memory 61a and a video decoding unit 61 incorporating a reduced image (thumbnail or the like) generating unit 62, a sub-picture (SP) decoding unit 63, and a memory 64a. An audio decoding unit 64, a TS packet transfer unit 101, a video processor (V-PRO) unit 65, and an audio D / A converter 70. The analog output (monaural, stereo, or AAC 5.1CH surround) from the D / A converter 70 is input to an AV amplifier (not shown) or the like, and a required number of speakers 72 are driven.

  By the way, in order to display the content being recorded on the TV monitor 68, the stream data to be recorded can be sent to the D-PRO unit 52 and simultaneously to the decoder unit 59 for reproduction. In this case, the MPU unit 80 sets the playback to the decoder unit 59, and then the decoder unit 59 automatically performs the playback process.

  The D-PRO unit 52 collects, for example, every 16 packs as an ECC group, attaches the ECC, and sends the ECC group to the drive unit 51. However, if the drive unit 51 is not ready for recording on the disc 100, the drive unit 51 transfers it to the temporary storage unit 53, waits until it is ready to record data, and starts recording when it is ready. Here, since the temporary storage unit 53 holds recording data of several minutes or more by high-speed access, a large-capacity memory is assumed. The temporary storage unit 53 can also be constructed using a part of the HDD 100a.

  The MPU unit 80 is configured to be able to read and write to the D-PRO unit 52 through a dedicated microcomputer bus in order to read and write the file management area and the like.

  In the apparatus of FIG. 18, an optical disk 100 such as a DVD-RAM / -RW / -R / Blue medium (recordable / reproducible medium using a blue laser) is first assumed as a recording medium, and a hard disk drive ( HDD) 100a (and / or a large-capacity memory card not shown) is assumed.

  Examples of how to use these multiple media are as follows. That is, stream recording is performed on the HDD 100a using the data structure (format) shown in FIGS. Of the stream recording contents recorded on the HDD 100a, the program that the user desires to save is directly stream recorded (direct copy or digital dubbing) on the disc 100 (copying is not prohibited by the copy control information CCI). If). In this way, only desired programs having the same quality as the original digital broadcasting can be collected on the disc 100. Furthermore, since the stream recording content copied to the disc 100 uses the data structure of the present invention, special playback such as time search (described later with reference to FIG. 50) is easy despite being stream recording. It will be something.

  A specific example of a digital recorder (streamer / video recorder composed of a combination of DVD-RAM / -RW / -R / Blue media and HDD) having the above characteristics is the apparatus shown in FIG. The digital recorder shown in FIG. 18 includes a tuner unit (82, 83, 89), a disk unit (100, 100a), an encoder unit 79, a decoder unit 59, and a control unit (80). Has been.

  The satellite digital TV broadcast is broadcast from a broadcasting station through a communication satellite. The broadcast digital data is received and reproduced by the STB unit 83. The STB 83 is a device that decompresses and reproduces scrambled data based on a key code distributed from a broadcasting station. At this time, the scramble from the broadcasting station is released. Here, the data is scrambled in order to prevent a user who has not made a reception contract with the broadcast station from illegally viewing the broadcast program.

  In the STB unit 83, although not shown, the broadcast digital data is received by the tuner system. When the received data is reproduced as it is, the scramble is canceled by the digital decompression unit, the received data is decoded by the MPEG decoder unit, converted to a TV signal by the video encoder unit, and this TV signal is converted to D / A. It is sent to the outside through the converter 67. As a result, the digital broadcast program received by the STB unit 83 can be displayed on the analog TV monitor 68.

  Terrestrial digital broadcasts are received and processed in the same way as satellite broadcasts, except that they do not go through communication satellites (and are not scrambled in free broadcasts). That is, the terrestrial digital broadcast is received by the terrestrial digital tuner unit 89, and when it is reproduced as it is, the decoded TV signal is transmitted to the outside through the D / A converter 67. As a result, the digital broadcast program received by the terrestrial digital tuner unit 89 can be displayed on the analog TV monitor 68.

  The terrestrial analog broadcast is received by the terrestrial tuner unit 82, and when it is reproduced as it is, the received analog TV signal is transmitted to the outside. Thereby, the analog broadcast program received by the terrestrial tuner unit 82 can be displayed on the TV monitor 68.

  The analog video signal analog-input from the external AV input 81 can be sent straight to the TV monitor 68, but is once A / D converted by the A / D converter 84 and then the D / A converter. Alternatively, the analog video signal may be returned to the external TV monitor 68 after returning to the analog video signal at 67. With this configuration, even when an analog VCR reproduction signal with a large amount of jitter is input from the external AV input 81, an analog video signal without jitter (digital time base correction) can be output to the TV monitor 68 side.

  A digital video signal digitally input from a digital I / F (IEEE 1394 interface) 74 is sent to the external TV monitor 68 side via a D / A converter 67. Thereby, the digital video signal input to the digital I / F 74 can be displayed on the TV monitor 68.

  A bit stream (MPEG-TS) input from satellite digital broadcast, terrestrial digital broadcast, or digital I / F 74 is a stream object 132 of the disk 100 (and / or HDD 100a) as a stream object 132 in FIG. Stream recording can be performed in the recording area 131 (FIG. 1D).

  Further, the analog video signal from the terrestrial analog broadcast or the A / V input 81 can be video-recorded in the VR object group recording area 122 (FIG. 1D) of the disc 100 (and / or the HDD 100a).

  Note that the apparatus can be configured so that the analog video signal from the terrestrial analog broadcast or the A / V input 81 is A / D converted and then stream-recorded instead of video-recorded. Conversely, the bit stream (MPEG-TS) input from the satellite digital broadcast, the terrestrial digital broadcast, or the digital I / F 74 is recorded as a video instead of a stream recording (after necessary format conversion). It is also possible to configure the device.

  Recording / playback control of stream recording or video recording is performed by firmware (a control program or the like corresponding to the operations of FIGS. 19 to 52 described later) written in the ROM 80C of the main MPU unit 80. The MPU unit 80 has a management data creation unit 80B for stream recording and video recording, creates various management information using the work RAM unit 80A as a work area, and the created management information is converted into the AV data management information shown in FIG. Records in the recording area 130 as appropriate. Further, the MPU unit 80 reproduces the management information recorded in the AV data management information recording area 130, and performs various controls (FIGS. 19 to 52) based on the reproduced management information. Note that the manufacturer ID information and the like of the apparatus shown in FIG. 18 can be written in the ROM 80C of the MPU unit 80.

  The characteristics of the medium 100 (100a) used in the apparatus shown in FIG. 18 can be summarized as follows. That is, this medium is composed of a management area 130 and a data area 131. In the data area, data is divided into a plurality of object data (stream object (ESOB)) and each object data is a data unit (ESOBU). Consists of. One data unit (ESOBU) is composed of a packet group obtained by grouping digital broadcast signals conforming to MPEG-TS into a plurality of packets for each TS packet (see FIGS. 1 and 16). On the other hand, the management area 130 has PGC information (PGCI) as information for managing the playback procedure, and the PGC information includes cell information (CI). Further, the management area 130 has information for managing object data (stream object (ESOB)).

  The apparatus shown in FIG. 18 can perform stream recording on medium 100 (100a) having the above data structure in addition to video recording. At this time, in order to extract the program map table PMT and the service information SI from the TS packet stream, the MPU unit 80 uses a service information extraction unit (not shown; firmware constituting a part of the management data creation unit 80B). Configured to have. In addition, an attribute information creation unit (not shown; firmware constituting a part of the management data creation unit 80B) that creates attribute information (PCR_LB number number or the like) based on the information extracted by the service information extraction unit. Configured as follows.

  In the apparatus of FIG. 18, the signal flow during recording is as follows, for example. That is, the TS packet data received by the STB unit 83 (or the terrestrial digital tuner 89) is packet-grouped by the formatter unit 90 and stored in the work (buffer memory unit 91), and when a certain amount is accumulated (1 or an integer thereof) When the double CDA is accumulated), it is recorded on the disc 100. In this operation, when TS packets are received, 85 packets are grouped and a packet group header is created.

  An analog signal input from the terrestrial tuner 82 or line input is digitally converted by the A / D unit 84. The digital signal is input to the encoder units 86 and 87. The video signal is input to the video encoding unit 87, the audio signal is input to the audio encoding unit 86, character data such as teletext is input to the SP encoding unit (not shown), the video signal is MPEG-compressed, and the audio signal is AC3-compressed or MPEG audio compression is performed, and character data is run-length compressed.

  When the compressed data is blocked from each encoder unit, the data is blocked to 2048 bytes and input to the formatter unit 90. In the formatter unit 90, each packet is blocked, further multiplexed, and sent to the D-PRO unit 52. The D-PRO unit 52 forms an ECC block every 16 (or 32) blocks, adds error correction data, and records it on the disc 100 by the disc drive unit 51.

  Here, since the drive unit 51 is in a seek state or a track jump, when it is busy, the drive unit 51 enters the HDD buffer unit 53 and waits until the RAM drive unit is ready. Further, the formatter unit 51 creates segmentation information during recording and periodically sends it to the MPU unit 80 (such as GOP head interrupt). The segmentation information includes the number of LBs of VOBU (ESOBU), the end address of the I picture from the head of VOBU (ESOBU), the playback time of VOBU (ESOBU), and the like.

  Further, the recording flow at the time of reproduction reads data from the disk 100 from the drive unit 51, performs error correction by the D-PRO unit 52, and inputs the data to the decoding units 61, 63 and 64. The MPU unit 80 determines whether the input data is VR data or ESR data (determined by Cell TYPE), and sets the type in the decoder unit before reproduction. In the case of ESR data, the MPU unit 80 determines the PMT_ID to be reproduced from the cell information CI to be reproduced, determines the PID of each item (video, audio, etc.) to be reproduced from the corresponding PMT, and sets it in the decoder unit. Based on the PID, the decoder unit sends each TS packet to each decoding unit by the separating unit 60. Further, the packet is sent to the TS packet transfer unit 101 and transmitted to the STB unit 83 (1394 I / F unit 74) in the form of a TS packet according to the arrival time. Each decoding unit performs decoding, converts the analog signal into a D / A unit 67, and displays it on the TV monitor 68.

  In the case of VR data, the separation unit 60 sends the data to each decoding unit according to a fixed ID. Each decoding unit performs decoding, converts the analog signal into a D / A unit 67, and displays it on the TV monitor 68.

  FIG. 19 is a flowchart (overall operation processing flow) for explaining an example of the overall operation of the apparatus shown in FIG. For example, when the apparatus of FIG. 18 is turned on, the MPU unit 80 performs initial settings (at the time of factory shipment or after setting by the user) (step ST10), performs display settings (step ST12), and the user Wait for operation. When the user inputs a key from the key input unit 103 or the remote controller 103a (step ST14), the MPU unit 80 interprets the contents of the key input (step ST16). The following five data processes are appropriately executed according to the result of the input key interpretation.

  That is, if the key input is a key operation for setting timer reservation recording, for example, the program setting process is started (step ST20). If the key input is a key operation for starting recording, the recording process is started (step ST22). If the key input is a key operation for starting playback, playback processing is started (step ST24). If the key input is a key operation for digital output to the STB unit 83, digital output processing is entered (step ST26). If the key operation is an editing process, the editing process is started (step ST28).

  The processes in steps ST20 to ST28 are appropriately performed in parallel for each task. For example, during the reproduction process (ST24), a process (ST26) for digital output to the STB unit 83 is executed in parallel. Alternatively, a new program setting process (ST20) can be processed in parallel during the recording process (ST22) that is not timer reserved recording. Alternatively, the reproduction process (ST24) and the digital output process (ST26) can be performed in parallel during the recording process (ST22) by taking advantage of the high-speed accessible disk recording. It is also possible to perform a disk editing process (step ST28) during recording on the HDD 100a.

  FIG. 20 is a flowchart (edit operation process flow) for explaining an example of the contents of the edit process (ST28) shown in FIG. Upon entering the editing process, four processes (any of A to D) can be entered in accordance with the editing content (step ST280). After the entry point editing process (step ST282A), copy / move process (step ST282B), deletion process (step ST282C), or playlist creation process (step ST282D), the manufacturer ID of the device that performed these operations is It is set to the editor ID (LAST_MNF_ID) 13327 in the program information PGI 1332 in FIG. 15 (step ST284). This editor ID is set (or updated) according to the ID information of the device used at that time whenever any of program information PGI, cell information CI, and stream object (ESOB) (or VOB) is changed. Is done.

  21 and 22 are flowcharts (recording flow) for explaining an example of the recording operation (ST22) of the apparatus of FIG. In the program setting process (ST20) of FIG. 19, a program to be recorded is determined using an EPG (Electronic Program Guide), reception is started, and the determined program is recorded.

  <01> When the MPU unit 80 receives a recording command from the key input unit 103, the management data is read from the drive unit 51 (step ST100), and the writing area is determined. At this time, the file system is checked to determine whether recording is possible (whether the recordable capacity remains in the disk 100 or the HDD 100a). If recording is not possible (No in step ST102), the fact ("No recording space") is indicated to the user (step ST104), and the recording process is stopped.

  When recording is possible (Yes in step ST102), it is determined whether to perform digital broadcast stream recording or analog broadcast video recording (or analog signal video recording obtained by D / A conversion of a digital broadcast signal). Is called. When it is not digital broadcast stream recording (No in step ST106), the processing shifts to recording processing based on the video recording standard. In the case of digital broadcast stream recording (Yes in step ST106), the recording start position is determined based on the management data read in step ST100.

  <02> A management area is set so as to write to the determined area, a video data write start address is set in the drive unit 51, and preparations for recording data are made (step ST110).

  If an error occurs during creation of management information (VMG) (Yes in step ST111), the process ends. If management information (VMG) has been created without error (No in step ST111), the process proceeds to the next initial setting for recording (step ST112).

  <03> As part of the initial setting for recording, time is reset for the STC unit 102 (step ST112). Here, the STC unit 102 is a system timer, and performs recording / playback (with fineness in units of frames) based on the count value of the timer.

  <04> The PAT of the program to be recorded (included in the MPEG-TS from the STB unit 83) is read, the PID for taking in the PMT of the target program is determined, the target PMT is read and decoded ( Determine the PID of each data (video, audio) to be recorded. At this time, the PAT and PMT at the start of recording are stored in the work RAM unit 80A of the MPU unit 80, and are written in the management information (step ST116). Also, the VMG file data is written to the file system, and the information necessary for VMGI (FIG. 4) is written.

  Here, the PAT can include information such as TS_ID, NETWORK_PID, and PMT_ID, and the PMT can include information such as SERVICE_ID, REG_DES_VALUE (Registration_Descriptor value), PCR_PID, and ESOB_ES_Ns.

  <05> As part of the initial setting for recording, recording setting is performed for each unit (step ST112). At this time, each data segmentation setting (separation setting for cells, ESOBUs, programs, packet groups, etc.) and TS packet reception setting are performed in the formatter unit 90. At this time, the PID of data to be recorded is set, and only the target video stream is recorded. Also, the buffer memory unit 91 is set to start holding TS packets.

  As part of the recording start setting, a buffer data fetch start process from the buffer memory unit 91 is set in the formatter unit 90 (step ST114). Then, the formatter unit 90 starts a buffer fetch process (described later with reference to FIG. 24).

  <06> Video / audio STIs (ESOBI_VSTI and ESOBI_ASTI in FIG. 7) are created from the PTM (step ST120 in FIG. 22; details are shown in FIG. 27). Next, the loading process to the buffer memory unit 91 is started (step ST130).

  <07> When a certain amount of data in the buffer memory unit 91 (for one continuous data area CDA) has been accumulated (Yes in step ST140), predetermined ECC processing (for example, 8 sectors and 16 kbytes) is performed through the D-PRO unit 52. ECC blocks are created in units of 32 sectors and 64 kbytes) and recorded on the disk (step ST142).

  <08> During recording (before the buffer RAM 91 of the formatter unit 90 is full; yes in step ST144), the segmentation information is stored in the work RAM unit 80A of the MPU unit 80 (step ST146). The segmentation information here is ESOBU segmentation information, such as an ESOBU start address, an ESOBU pack length, or an I picture end address, an ESOBU arrival time (ATS), and the like.

  <09> The remaining amount of the disk 100 (or HDD 100a) that is being recorded is checked, and when the remaining amount becomes less than a certain value (for example, 150 Mbytes), the remaining capacity is reduced. Can be configured. As the remaining capacity reduction process, there is a process of erasing an unerasable data (temporarily erased file discarded in the trash box file) on the disk to increase the remaining capacity. Alternatively, as the remaining capacity reduction process, there is a process of decreasing the recording rate (or switching the MPEG-2 recording to the MPEG-1 recording) to increase the recordable time even if the physical remaining capacity is the same. Alternatively, when a dummy pack to be used for post-recording or the like is recorded on the disc 100, the process of canceling the recording of the dummy pack can be performed as a part of the remaining capacity reduction process. Alternatively, when the remaining capacity of the disk 100 decreases, the process of continuing relay recording to the unrecorded area of the HDD 100a can be performed as part of this remaining capacity reduction process.

  <10> Check whether the recording is finished (whether the recording end key has been input or whether the remaining capacity has been exhausted). When the recording is finished (Yes in step ST148), the remaining segmentation information is fetched from the formatter unit 90, The data is added to the work RAM unit 80A, the data is recorded in the management data (VMGI), and the remaining information is recorded in the file system (step ST150). In ST150, stream file information (SFI or ESFI) described later with reference to FIG. 28 is also created.

If it is not <11> end (No in step ST148), the process returns to step ST140, and the data fetch (step ST130) and the write (step ST142) are continuously performed.

  Here, in order to display on the TV monitor 68, it is sent to the decoder unit 59 at the same time as the D-PRO unit 52, and is played back. However, in this case, the MPU unit 80 sets the reproduction to the decoder unit 59, and then the decoder unit 59 automatically performs reproduction.

  The D-PRO unit 52 collects every 16 packs as an ECC group, attaches the ECC, and sends the ECC group to the drive unit 51. However, if the drive unit 51 is not ready to record on the disk, it is transferred to the temporary storage unit 53, waits until it is ready to record data, and starts recording when it is ready. Here, since the temporary storage unit 53 holds recording data of several minutes or more by high-speed access, it is preferable to use a large capacity memory. However, the MPU unit 80 can read and write to the D-PRO unit 52 through the MPU bus in order to read and write the file management area and the like.

  FIG. 23 is a flowchart (interrupt processing flow) for explaining an example of interrupt processing in the operation of the apparatus of FIG. In the interrupt process in the control operation of the MPU unit 80, first, an interrupt factor is checked (step ST30). If the interrupt factor is “because transfer of one pack (or one packet) to D-PRO unit 52 has been completed”, the number of recording logical blocks LBN is incremented by one (step ST301). If the interrupt factor is “by capturing segmentation information from the formatter unit 90”, a segmentation information 1 capture interrupt flag (not shown) is set (step ST302).

  FIG. 24 is a flowchart (buffer fetch process flow) for explaining an example of the contents of the buffer fetch process (ST130) shown in FIG.

  <01> The STB unit 83 (or the terrestrial digital tuner unit 89) receives the TS packet (step ST1300).

  <02> If the fetched TS packet has a PCR (Yes in step ST1302), the STC unit 102 is corrected (step ST1304).

  <03> In the case of the head of the packet group (Yes in step ST1306), the arrival time is fetched from the STC unit 102 and set as ATS (step ST1308). If it is not the beginning (No in step ST1306), the difference between the leading ATS value and the arrival time (or the difference between the arrival times of the TS packets that arrived one time before) is set as IAPAT, and the preceding TS packet (that is, It is arranged after the previous TS packet (step ST1310).

  <04> Check to see if there is a copy descriptor in the PMT to which the main stream that was fetched first belongs. If yes (YES in step ST1312), write that information in all packet group headers. Originally, the copy control information CCI is configured and stored in the packet group header (step ST1313).

  <05> If there is no copy information in the PMT (No in step ST1312) and there is no copy descriptor in the received TS packet (No in step ST1314), the copy information is configured based on the same information as the previous packet. (Step ST1315). If there is (Yes in step ST1314), the copy control information CCI is constructed based on the information and stored in the packet group header (step ST1316).

  <06> Next, it is checked whether or not there is a component descriptor in the TS packet. If not (No in step ST1318), the same information as the previous packet is stored in the packet group header (step ST1319). If there is (Yes in step ST1318), resolution information is constructed based on the information and stored in the packet group header (step ST1320).

  <07> Next, it is determined whether or not the packet group has ended (specifically, whether or not 85 TS packets have been grouped). If the packet group has not ended (No in step ST1322), buffer fetch processing Move to the top of ST130. If completed (Yes in step ST1322), the group data is temporarily stored in the buffer RAM 91 (step ST1323).

  Here, when the head of a picture is included in a group, the PTS looks at the TS packet and saves it. When there is no video data and only audio data, the CCI is configured according to the audio copy information. Further, the presence or absence of each information is detected, stored in the work RAM unit 80A, and recorded as management information in the management information recording area 130 at the end of recording (ST150 in FIG. 22).

  During reproduction, packet data read from the disk 100 (or HDD 100a) is analyzed by the separation unit 60, and in the case of a packet containing a TS packet, it is sent to the TS packet transfer unit 101. Further, thereafter, the read packet data is sent to each decoder (61, 63, 64), and corresponding reproduction (video reproduction, sub-picture reproduction, audio reproduction) is performed.

  When transferring the TS packet to the STB unit 83 (or when transmitting to an external digital TV or the like via the IEEE 1394 I / F 74), the TS packet transfer unit 101 sends the data at the same time interval as when it arrived. Transfer only TS packets.

The process of FIG. 24 can be briefly described in another way as follows. That is,
<01> Regarding the signal flow during recording, TS packet data received by the STB unit 83 (or the terrestrial digital tuner 89) is packet-grouped by the formatter unit 90 and stored in the work memory (buffer memory unit 91). Then, recording is performed on the disc 100 when a certain amount of CDA is accumulated (at a stage when 1 or an integral multiple of CDA is accumulated). At that time, when TS packets are received, they are grouped by 85 packets to create a packet group header.

  <02> If there is a PCR in the fetched TS packet, the STC unit 102 is corrected.

  <03> In the case of the head of the packet group, the arrival time is fetched from the STC unit 102 and set as ATS. If it is not the head, the difference between the value of the head ATS and the arrival time (or the difference between the ATS of the previous TS packet) is placed in front of the TS packet as IAPAT.

  <04> Check whether there is copy information in the PMT to which the main stream fetched first belongs, and if so, write that information in all packet group headers, so that information (FIGS. 37 to 39) is stored. Originally, the copy information (FIG. 17) is configured, and the process proceeds to <06>.

  <05> If there is no copy information in the received TS packet, the same information as the previous packet is held, and if there is copy information in the received TS packet, the copy information is configured based on that information.

  <06> Whether there is resolution information is checked. If there is no resolution information, the same information as the previous packet is held. If there is resolution information, the resolution information is constructed based on that information (FIGS. 42 and 43).

  <07> Determine whether the packet group has ended (determine whether 85 TS packets have been grouped). If not, proceed to <01>. If grouping ends, group data Is temporarily stored in the buffer RAM (buffer memory unit 91).

  Here, when the head of a picture is included in a group, the PTS looks at the TS packet and saves it. When there is no video data and only audio data, the copy control information CCI is configured according to the audio copy information.

  At the time of reproduction, <11> packet data read from the disc 100 is analyzed by the separation unit 60, and if it is a packet containing <12> TS packet, it is sent to the TS packet transfer unit 101. <13> Then, this packet data is sent to each decoder and reproduced. <14> When transferring to the STB unit 83 (or when transmitting to an external device such as a digital TV), the TS packet transfer unit 101 transfers only the TS packet at the same time interval as when it arrived. The <15> STB unit 83 performs decoding, generates an AV signal, and displays the AV signal on the TV monitor 68 through the video encoder unit in the streamer.

  25 and 26 are flowcharts (recording pre-processing flow) for explaining the recording process ST22 shown in FIG. 19 (processing before starting recording on the disk-shaped information storage medium shown in FIG. 1). An example of this pre-recording process will be described below.

  (A) A directory of DVD_HDR (a directory into which a new HD compatible video recording is inserted, a directory in which a new VR (HD compatible) and ESR are inserted) is searched (step ST1100). ST1102) If there is, move to the next step.

  (B) Check whether data is recorded in the directory, and if an error occurs at that time (Yes in step ST1104), display that effect (“An error has occurred in the file system”) (step ST1106), the process ends in error. If there is no error (No in step ST1104), the presence / absence of the recording data management information (VMGI) is checked (step ST1108). If data is recorded and VMGI is present (Yes in step ST1108), the VMGI is read into the work RAM unit 80A (step ST1110), and the broadcast system recorded therein (APP_NAME in FIG. 8, etc.) From this, it is determined whether or not the system is supported by the present device (device of FIG. 18) (step ST1112). If not supported (No in step ST1112), a message to that effect ("broadcasting method is different") is displayed (step ST1114), and the process ends in error.

  (C) When there is no recorded data management information VMGI (NO in step ST1108), VMGI is created in the work RAM unit 80A.

  (D) The broadcasting system of data to be recorded is checked (step ST1116). In this investigation, if the signal to be recorded is from the internal tuner, the default method is used in the device. If the signal to be recorded is an external digital input, the value of the descriptor Registration_Descriptor sent from the digital input is examined to determine the recording method (step ST1116).

  (E) It is determined whether or not the broadcasting system of the data to be recorded is a system supported by the device (the apparatus in FIG. 18). If not supported (No in step ST1122), a message to that effect ("broadcasting method is different") is displayed (step ST1124), and the process ends in error.

(F) If it is supported (Yes in step ST1122),
In step ST1126, it is determined whether there is an ESOB file in which the broadcast system of the data to be recorded matches the broadcast system recorded on the disc. In this case, APP_NAME is required for each ESOBI_GI when multiple recording methods are allowed in the disc, but APP_NAME is set to ESFI_GI and / or VMG_MAT when multiple existence is prohibited. (See description of FIG. 9). APP_NAME may be fixed depending on the device or may be changed for each ESOB. As the set value, there are a case where a name such as ARIB is input by a character code and an ID code (ARIB = “01”, DVB = “02”, etc.).

  If it exists, a new EFSI is created in step ST1128, and the received digital method method code is set in APP_NAME (CountryID, authorityID, and Packet format are the default values of the tuner unit, Network type, and broadcasting method version are from SI. Setting). In step ST1130, an ESOB file of a corresponding format is newly created, and setting is made so that object data to be recorded is recorded in the file. If it does not exist, a new VMG is created (step ST1132). That is, the SOBI for recording this time is added to the same EFSI of APP_NAME. After the ESOB file of the same APP_NAME recorded in step ST1134, it is set to additionally record object data to be recorded. FIG. 27 is a flowchart (STI setting process flow) for explaining an example of the contents of the stream information (VSTI and ASTI) creation process (ST120) shown in FIG.

  First, the VSTI and ASTI in the ESOBI are checked (step ST1200), the stream type in the PMT is checked (step ST1201), and then the VSTI recorded on the disc 100 is read (step ST1201). In stream recording for recording MPEG-TS, a PMT is included in a stream to be recorded, and a stream type is described in the PMT (described later with reference to FIG. 36).

  Therefore, processing is performed for each of the four stream types based on the previously investigated stream types (step ST1203). That is, when the stream type is “0x01”, the MPEG-1 video packet of the corresponding PID is read, and data such as resolution and aspect ratio is extracted from the sequence header (step ST1204). When the stream type is “0x02”, the MPEG-2 video packet of the corresponding PID is read, and data such as resolution and aspect ratio is extracted from the sequence header (step ST1206). When the stream type is “0x03”, the MPEG-1 audio packet of the corresponding PID is read, and data such as the sampling frequency, the number of quantization bits, the number of channels, etc. are extracted from the sequence header (step ST1208). When the stream type is “0x04”, the MPEG-2 audio packet of the corresponding PID is read, and data such as the sampling frequency, the number of quantization bits, and the number of channels are extracted from the sequence header (step ST1210).

  When the stream type is “0x01” or “0x02”, data such as the resolution and aspect ratio of the corresponding video is taken out, and then it is checked whether the VSTI having the same content is in the VSTI checked in ST1200 (step ST1212). If there is no same content (No in step ST1212), a new VSTI is created based on the previously read data (step ST1214). If there is the same content (Yes in step ST1212), the number is set to the corresponding ESOB_ES_VSTIN or ASTIN 1234323 (FIG. 10), and the VSTI is left as it is. The VSTI number thus obtained is associated (linked) with the stream number (component group number) and stored in the work RAM unit 80A (step ST1216).

  On the other hand, when the stream type is “0x03” or “0x04”, after extracting data such as the sampling frequency and the number of channels of the corresponding audio, it is checked whether the ASTI having the same content is included in the ASTI checked in ST1200 (step ST1222). ). If there is no same content (No in step ST1222), a new ASTI is created based on the previously read data (step ST1224). If there is the same content (Yes in step ST1222), the number is set in the corresponding ESOB_ES_VSTIN or ASTIN 1234323 (FIG. 10), and the ASTI is left as it is. The ASTI number thus obtained is associated (linked) with the stream number (component group number) and stored in the work RAM unit 80A (step ST1216).

  The above process is repeated when there are other streams that have not created VTSI and / or ATSI (Yes in step ST1230).

  If there is no more stream for which VTSI and / or ATSI has not been created (No in step ST1230), the process in FIG. 27 is terminated, and the process returns to the process in FIG.

The process of FIG. 27 can be simply described in another way as follows. That is,
(A) The VSTI and ASTI recorded on the disc are read into the work RAM unit 80A.

  (B) Check the PMT (FIG. 36) and check the number of set streams.

  (C) The stream type is checked from the PMT to determine whether the stream is a video or audio stream. Otherwise, the process proceeds to the next stream check.

  (D) The stream type is divided into MPEG-1 video, MPEG-2 video, MPEG-1 audio, MPEG-2 audio,..., Internal data is checked according to each type, and each attribute information is read out. .

  (E) The attribute information is compared with VSTI and ASTI. If there is the same attribute information, the number is set in the corresponding ESOB_ESI, and the next stream check is performed.

  (F) A new VSTI and / or ASTI is set based on the attribute information, the number is set in the corresponding ESOB_ESI, and the process proceeds to the next stream check.

  (G) The process is repeated for the number of streams set.

  FIG. 28 is a flowchart (stream file information creation process flow) for explaining an example of the contents of the stream file information (SFI or ESFI) creation process in the recording end process (ST150) shown in FIG.

  (A) First, in order to increase SOBI by one, the search pointer SOBI_SRP is increased to secure a recording area on the disc for the increased management information (SOBI, SOBI_SRP) (step ST1500).

  (B) The recording time is set to SOB_REC_TM and SOB_REC_TM_SUB (step ST1502). Here, the timepiece (STC unit 102 in FIG. 18) in the device is set / corrected by TDT (Time Data Table), and an accurate time is always obtained.

  (C) A start PTM and an end PTM are set (step ST1502).

  (D) PCR_POS_SHIFT is set according to the recording rate (step ST1504).

  (E) When the stream type is a transport stream (TS stream: ARIB or DVB in the broadcasting system) (Yes in step ST1506), APP_PKT_SZ is set to “188” and PKT_GRP_SZ is set to “8”. (Step ST1508). Otherwise (NO in step ST1506), APP_PKT_SZ and PKT_GRP_SZ are set to values suitable for the broadcasting system (step ST1510). Specifically, in step ST1510, APP_PKT_SZ is set to the value of the transfer packet length, and PKT_GRP_SZ is set to a value corresponding to the transfer packet length.

  (F) In step ST1509, it is determined whether or not the broadcasting system is the ARIB system. If it is not the ARIB system, it is set and recorded in a structure adapted to each system in step ST1511, and the process ends. In the case of the ARIB method, the PAT at the start of recording is read from the work memory in step ST1514, and TS_ID, NETWORK_PID, and PMT_ID (PMT of PMT used in this stream object (ESOB)) are set.

  (G) SERVICE_ID (Program_Number in PMT) and PCR_PID are set from PMT (step ST1516). Further, for FORMAT_ID and VERSION, in the case of an internal tuner, a default method is used in the device. In the case of external digital input, with respect to FORMAT_ID and VERSION, the value of descriptor Registration_Descriptor (REG_DES for short) sent from the digital input is set (step ST1516).

  (H) Furthermore, the number of recorded ESs is set. (Information on all ESs being broadcast: number is set in the PMT, but since not all ESs are recorded at the time of recording, the number of recorded ESs is set (step ST1516). .

(I) Since the component group descriptor in the event information table EIT contains information about which ES and which ES are to be reproduced as a set, the information of the ES that forms the group is grouped (step ST1518). . Further, the component tag information of the group is converted into PID by the stream descriptor in the PMT, and the information is stored as group information. (This EIT information may vary depending on the broadcasting system.)
(J) The logical block address (LB address) at which recording is started is set in ADR_OFS, and a MAPI is created for each stream based on each segmentation information (step ST1520). However, MAPI is not created for unnecessary streams, or SOBU_ENT_Ns is set to “0”.

  FIG. 29 includes a process (ST1710) of setting an ID to be referred to at the time of reproduction when cell type 13341 in the cell information (CI) shown in FIG. 15 indicates stream recording (C_TY or CELL_TY is “2”). It is a flowchart (program creation process flow) explaining an example of how a program creation is performed.

  Here, in the case where a plurality of broadcasting format data are recorded together on one medium, the mixing may be permitted / prohibited at various levels as described above. It is a case to permit. FIG. 30 shows a case where mixing is permitted in units of programs and playlists, and FIG. 31 shows a case where mixing is permitted in units of cells.

  For example, an erasure permission flag (= “0”) is set in the program type PG_TY 13321 included in the program information PGI 1332 of FIG. 15, and the number of cells is set in the number of cells C_Ns 13323 included in the PGI 1332 (step ST1706).

  Here, when the broadcasting system is ARIB and the Language_code of the short format event descriptor in the EIT is “jpn”, 0x12 is set in the CHR of VMG_MAT, and the event descriptor event_name (program name) is set in the second area of PRM_TXTI. ) And representative image information is set in REP_PICTI (step ST1706).

  Next, the manufacturer ID of this apparatus is set in the editor ID (LAST_MNF_ID) 13327 in the program information PGI 1332 of FIG. If there is a change in PGI, CI, SOB (and / or VOB), the manufacturer ID of the device that made the change is set in this set value (step ST1708).

  This setting to LAST_MNF_ID is performed so that it is possible to know which manufacturer the device that last edited or recorded on each disc. With this setting, if a disc recorded on a device of a certain manufacturer is later edited on a device of a different manufacturer, it will be easier to deal with any trouble (for example, some or all of the information cannot be played back). .

  In this step (step ST1708), an absolute number of a program is set in the program index PG_INDEX, and reference in PG units is possible when referring from other application software. Furthermore, information unique to each manufacturer is set in MNFI.

  Next, information (C_TY = “2”) indicating that the cell type is a streamer (the recording object is a stream object (ESOB)) is set (step ST1710). Here (step ST1710), the stream information file information (ESFI) number to be referred to and the stream object (ESOB) number to be referenced are set, the representative PID (of video) or Component_Group_Id is set as the playback ID, and the EPI Number, playback start PTM, playback end PTM, and entry point EP are set.

  FIG. 30 is a flowchart (program creation process flow) for explaining an example of how a program creation including a process of setting an ID to be referred to at the time of reproduction (ST1710) is performed when mixing is prohibited in PGC units. is there.

  Only step ST1706 is different from FIG. In step ST1706A in FIG. 30, for example, an erasure permission flag (= “0”) is set in the program type PG_TY13321 included in the program information PGI1332, the number of cells is set in the number of cells C_Ns13323 included in the PGI1332, and the number in the EIT is set. When the language_code of the short format event descriptor is “jpn”, 0x12 is set in the CHR of VMG_MAT, the event descriptor event_name (program name) is set in the second area of PRM_TXTI, and the representative image information is set in REP_PICTI. In addition to setting, SFI number / APP_NAME is set in PGI. The other steps are the same as in FIG.

  FIG. 31 is a flowchart (program creation process flow) for explaining an example of how a program creation including a process (ST1710A) for setting an ID to be referred to at the time of reproduction is permitted when mixing is permitted in cell units. is there.

  Only step ST1710 is different from FIG. In step ST1710A of FIG. 31, information (C_TY = “2”) indicating that the cell type is a streamer (the recording object is a stream object (ESOB)) is set, the stream information file information (ESFI) number to be referenced, and the reference In addition to setting the stream object (ESOB) number to be played, setting the representative PID (of video) or Component_Group_Id as the playback ID, and setting the number of EPI, playback start PTM, playback end PTM, and entry point EP, respectively , SFI number / APP_NAME is set in the cell information CI. The other steps are the same as in FIG.

The processing at the time of recording (FIGS. 21, 22, 24 to 31) can be briefly described as follows. That is,
<01> First, a program to be recorded is determined by using an EPG (Electronic Program Guide) in the program setting process, reception is started, and the determined program is recorded.

  <02> When the MPU unit receives a recording command from the key input unit, the management data is read from the drive unit and an area to be written is determined (step ST100 in FIG. 21). At this time, the file system is checked to determine whether or not recording is possible. If recording is possible, the recording position is determined. If the recording is not possible, the fact is indicated to the user and the process is stopped.

  <03> The determined area is set to be written in the management area, the video data write start address is set in the drive unit, and preparation for recording data is performed (step ST110 in FIG. 21).

  <04> The time is reset in the STC unit (step ST112 in FIG. 21). Here, the STC unit is a system timer, and performs recording and reproduction based on the clock count value of the STC unit.

  <05> Read the PAT of the program to be recorded (step ST116 in FIG. 21), determine the PID for taking in the PMT of the target program, read the target PMT, and read (decode) each data (video) , Audio) PID is determined. At this time, the PAT and PMT are stored in the work RAM unit 80A of the MPU and written to the management information. Also, VMG file data is written to the file system, and information necessary for VMGI is written.

  <06> Recording setting is performed for each unit (step ST114 in FIG. 21). At this time, each data segmentation setting and TS packet reception setting are performed in the formatter unit. At this time, the PID of the data to be recorded is set so that only the target video stream is recorded. Also, the buffer is set to start holding TS packets. The formatter unit starts a buffer fetch processing operation as shown in FIG.

  <07> VSTI and ASTI are created from the PTM (step ST120 in FIG. 22; processing in FIG. 27).

  <08> When a certain amount of data in the buffer (for 1 CDA) has accumulated (YES in step ST140 in FIG. 22), ECC processing is performed through the D-PRO section and recorded on the disc (step ST142 in FIG. 22).

  <09> During recording, the segmentation information is periodically saved in the work RAM unit 80A of the MPU (before the buffer RAM of the formatter unit becomes full) (step ST146 in FIG. 22). The segmentation information here is ESOBU segmentation information, such as the top address of ESOBU, the LB length of SOBU, or the end address of I-picture, the arrival time (ATS) of ESOBU, and the like.

  <10> The remaining amount is checked, and when the remaining amount is less than a certain level, the remaining capacity reduction process described above with reference to FIG.

  <11> Check whether the recording is finished (whether the recording end key has been input or whether the remaining capacity has been exhausted). When the recording is finished (YES in step ST148 in FIG. 22), the remaining segmentation information is fetched from the formatter unit. The data is added to the work RAM unit 80A, the data is recorded in the management data (VMGI), and the remaining information is recorded in the file system (step ST150 in FIG. 22; the process in FIG. 28).

  If it is not <12> end (NO in step ST148 in FIG. 22), the process returns to <008> to continue to take in (and reproduce) data.

  Here, in order to display the content being recorded (or the content to be reproduced) on the TV, the data is sent to the decoder unit at the same time as the D-PRO unit and displayed (reproduced). However, in this case, the MPU unit makes settings for reproduction in the decoder unit, and then the decoder automatically performs reproduction.

  The D-PRO unit collects every 16 LB or 32 LB as an ECC group, and sends the ECC to the drive unit with an ECC attached. However, if the drive unit is not ready for recording on the disk, it is transferred to the temporary storage unit, waits until it is ready to record data, and starts recording when it is ready. Here, since the temporary storage unit holds recording data of several minutes or more by high-speed access, a large-capacity memory is assumed. In addition, the MPU can read and write at high speed through a dedicated microcomputer bus to the D-PRO unit in order to read and write the file management area and the like.

  32 and 33 are flowcharts (overall playback operation flow referring to APP_NAME) for explaining an example of the playback operation of the apparatus of FIG.

  <01> The disk is checked (step ST200), and it is checked whether the disk is a rewritable disk (R, RW, RAM). If it is not a rewritable disc (NO in step ST200), a message to that effect is returned (step ST202) and the process is terminated.

  <02> If the disc is rewritable (YES in step ST200), the file system of the disc is read to check whether there is recorded data (step ST204). If nothing has been recorded (No in step ST204), “Not recorded” is displayed (step ST206), and the process ends.

  <03> If recorded (YES in step ST204), the management information (VMG file) 130 is read (step ST207), and the system information of each ORG_PGC_GI is extracted. Reproducible ORG_PGC and UD_PGC are selected and displayed on the screen (step ST205; PGC_GI includes method information). A program and a cell to be reproduced are determined (by the user to select), and a file pointer (logical address) to start reproduction is determined (step ST208). Here, when reproduction in the recording order is selected, reproduction is performed according to ORG_PGCI. When reproduction for each program is performed (in the procedure set by the user), reproduction is performed according to the number UD_PGCI (or playlist) corresponding to the program to be reproduced.

  <04> Here, APP_NAME is read from the management information (for example, ESOBI13523 in FIG. 6) stored in the work RAM unit 80A as specific information in which a value corresponding to the broadcast system to be recorded is set (step ST209). If the value set in APP_NAME is not a method that can be supported by the playback device (FIG. 18) (No in step ST210), a warning to that effect (“not a supported method”) is displayed on the monitor. After displaying (step ST211), the process is terminated.

  On the other hand, if the value set in APP_NAME is a method that can be supported by the playback device (FIG. 18) (Yes in step ST210), processing at the start of playback is performed (step ST212).

  <05> Initial setting of each decoder is performed (step ST214).

  <06> Cell reproduction processing is performed (step ST220). It is checked whether or not the reproduction has ended (step ST230). If the reproduction has ended (YES in step ST230), an error check is performed (step ST240). If there is an error (Yes in step ST240), a message to that effect ("read error") is displayed (step ST242), and a reproduction end process is performed (step ST244). If it is not an error (No in step ST240), a reproduction end process is performed (step ST246), and this operation ends.

  <07> If playback is not finished (No in step ST230), the next cell is determined from PGCI (step ST232), and it is checked whether the settings of the decoders (61, 64, etc.) have been changed (step ST234). . If changed (Yes in step ST234), a change attribute is set in the decoder so that the decoder setting is changed to the next sequence end code (step ST236). Thereafter, it is checked whether the connection from the previous cell playback to the next cell playback is a seamless connection. If it is not seamless connection (No in step ST238), the MPEG decoder (61 etc.) is set to the free-run mode, a seamless connection flag is set (step ST239), and the process returns to step ST220. In the case of seamless connection (Yes in step ST238), the process directly returns to step ST220.

  <08> During cell playback processing (step ST220), it is checked whether playback has ended (step ST230). If playback does not end, processing in step ST220 is continued.

  FIG. 34 and FIG. 35 are flowcharts for explaining an example of processing at the time of cell playback (step ST220 of FIG. 33) in the apparatus of FIG. 18 (processing flow at the time of cell playback using both ADR_OFS in logical block units and packet units). is there.

  <01> ESFI, ESOB file, and broadcasting system to be reproduced are determined from the ESFI number. The cell start file pointer FP (represented by the logical block number LBN) and the end FP are determined from the contents of the MAPI, and the start ESOBU_ENTRY and the end ESOBU_ENTRY are determined from the start time and end time in the cell information, and the ADR_OFS is set. The data length of ENTRY up to the target ESOBU_ENTRY is accumulated, and the start address (LB = FP) and the end address are obtained (step ST2200). The remaining cell length is a value obtained by subtracting the start address from the end address, and the reproduction start time is set in the STC.

  <02> When the ID to be referred to is 0xffff (Yes in step ST2201), there are two types of multi-angle display methods: a simultaneous display of a small screen and a display of a preset group. In the former case (Yes in step ST2203), the PID of all the videos and the PID of the main audio are set in the decoder and set in the decoder so as to be in the sub-screen simultaneous display mode (step ST2205). On the other hand, in the latter case (No in step ST2203), the PID of the group set in advance in the decoder is set in the decoder (step ST2204). If there is no prior setting, a default value or a main group value is set (step ST2204).

  <03> When the referenced ID is not 0xffff (No in step ST2201) and the referenced ID is PID (first half of step ST2202), the group to which the referenced ES belongs is identified from the component group descriptor and played back Each PID to be determined is determined and set in the decoder (step ST2202).

  On the other hand, if the ID to be referred to is the group ID (second half of step ST2202), the PID in the group is specified from the component group descriptor, each PID to be reproduced is determined, and set in the decoder (step ST2202).

  <04> Setting is performed so that decoding processing is performed inside the decoder unit (step ST2202).

  <05> Read processing during playback is executed, and the read address and read size are determined from the start file pointer (step ST2206).

  <06> The read unit size to be read is compared with the remaining cell length, and if the remaining cell length is large (Yes in step ST2207), the value obtained by subtracting the read unit size to be read from the remaining cell length is set to the remaining cell length (step ST2208). If it is smaller (No in step ST2207), the read length is set to the remaining cell length, and the remaining cell length is set to 0 (step ST2209).

  <07> The read length is set to the length of the read unit, and the read address, read length, and read command are set in the drive unit (step ST2210).

  <08> After the start of transfer (Yes in step ST2212), it waits for 1 ESOBU to accumulate (step ST2214). If accumulated (YES in step ST2214), the process proceeds to next step ST2216.

  <09> Inside the decoder unit 59, the separating unit 60 receives the read packet group data (step ST2216) and packetizes it. Then, according to the stream ID and substream ID, video packet data (MPEG video data) is transferred to the video decoding unit 61, audio packet data is transferred to the audio decoding unit 64, and sub-picture packet data is transferred to the SP decoding unit 63. To do. Also, the TS packet transfer unit 101 converts the read packet group data into an elementary stream, and then sends it to each decoder (61, 64) via the internal bus to perform a decoding process.

  <10> If the seamless connection flag is set during the transfer process (Yes in step ST2222), the read file pointer (FP) + read length is set to the read file pointer, and the MPEG decoder 61 is set to the normal mode ( The SCR is read and set), and the seamless connection flag is reset (step ST2224). Here, the value obtained by adding the read FP and the previously set read length is substituted for the read FP.

  <11> During playback, the content of the STC unit 102 is displayed as the playback time. However, when the STB unit 83 can display the playback time based on the PTS in the video data, it is used.

  <12> It is checked whether the transfer is completed. If the transfer is not completed (No in step ST2226), the process proceeds to step ST2230.

  <13> It is checked whether the transfer has been completed. If the transfer has been completed (Yes in step ST2226), the remaining cell length is checked (step ST2228). If it is not “00” (No in step ST2228), the process returns to step ST2206. If it is “00” (Yes in step ST2228), this process ends.

  <14> If the transfer has not ended (NO in step ST2226), the key input is checked (step ST2230). Angle playback such as multi-angle is permitted (Yes in step ST2231), and when the angle is changed (yes in step ST2233), the PID of the group designated by the component group descriptor is set in the decoder (step ST2235). . Thereafter, the buffer in the decoder is cleared without changing the count value of the STC unit 102 (step ST2237), and the process returns to step ST2212.

  FIG. 36 is a diagram for explaining a data structure example of a program map table (PMT) that can be used in the apparatus of FIG. In this PMT, various streams can be identified by an 8-bit stream type 3421. For example, if the stream type is “0x01”, it indicates that it is an MPEG-1 video stream, and if the stream type is “0x02”, it indicates that it is an MPEG-2 video stream (click here for high-definition). If the stream type is “0x03”, it indicates that the stream is MPEG-1 audio, and if the stream type is “0x04”, the stream is MPEG-2 audio (click here for AAC multi-channel audio). Indicated.

  FIG. 37 is a diagram exemplifying the contents of a digital copy control descriptor that can be used in the PMT of FIG. 36 and others (service description table SDT, event information table EIT, etc.).

  In this descriptor, the “descriptor tag” field is set to “0xC1”, for example, and the descriptor length is indicated in the “descriptor length” field. In the “digital recording control” field, “copy generation control data” is described. In the “maximum bit rate flag” field, “whether or not to describe the maximum transfer rate of the service” is described. The flag when not described is, for example, “0”, and the flag when described is, for example, “1”. When “0” is described in the “component control flag” field, for example, the entire program is defined (in the case of PMT). When “1” is described in this field, other states are described. In the “copy control type” field, “copy generation control data” is described (see FIGS. 37, 38, and 39). In the “APS control data” field, “analog output control data” is described. In the “maximum bit rate” field, “maximum transfer rate” is described (when the maximum bit rate flag is “1”).

  FIG. 38 is a diagram for explaining an example of how digital copy control is used for video data. Video data copy control can be broadly divided into three types: “unrestricted copy allowed (copy free)”, “copy prohibited (copy never or no more copy)”, and “only one generation copy allowed (copy once)”. .

  In the case of “unrestricted copy permitted”, the analog copy control is “unrestricted copy permitted”, the digital recording control is “01”, the control type is “00”, and the APS control data is “Don't care”, for example. (Ignore) ”.

  In the case of “copy prohibited”, (1) analog copy control is “copy prohibited (digital copy is not possible, but analog copy is possible without a macrovision (R) type copy prevention pulse)”. 01 ”, the control type is“ 11 ”, for example, and the APS control data is“ 00 ”, for example.

  Alternatively, in the case of “copy prohibited”, (2) analog copy control is “copy prohibited (analog copy and digital copy are not allowed)”, digital recording control is “01”, control type is “11”, and APS The control data is, for example, other than 00.

  In the case of “Copying of only one generation”, (3) Analog copy control is “Copying of only one generation is possible (however, analog copy is possible without copy prevention pulse)”, and digital recording control is “01”, for example. The type is “10”, for example, and the APS control data is “00”, for example.

  Alternatively, in the case of “copying of only one generation”, (4) analog copy control is “copying of only one generation is possible (copying of subsequent generations is neither analog copy nor digital copy)”, and digital recording control is, for example, “01 ", The control type is, for example," 10 ", and the APS control data is, for example, 00.

  FIG. 39 is a diagram for explaining an example of how digital copy control is applied to audio data. There are three types of audio data copy control: “Unrestricted copy allowed (copy free)”, “Only one generation can be copied (copy once)”, and “Copy prohibited (copy never or no more copy)”. .

  In the case of “unrestricted copy permitted”, the digital recording control is “01/11”, for example, and the control type is “00”, for example.

  In the case of “only one generation can be copied”, the digital recording control is “01/11”, for example, and the control type is “10”, for example.

  In the case of “copy prohibited”, the digital recording control is “01/11”, for example, and the control type is “11”, for example.

  FIG. 40 is a diagram for explaining an example of the data structure of an event information table (EIT) that can be used in the apparatus of FIG. This EIT has a recording field of a descriptor 3426a, and a descriptor such as “component group descriptor” can be stored therein.

  FIG. 41 is a diagram for explaining an example of the contents of a component group descriptor. In this descriptor, the “descriptor tag” field is set to “0xD9”, for example, and the descriptor length is indicated in the “descriptor length” field. In the “component group type” field, for example, “000” indicating multi-view TV, or “001” to “111” in an undefined state for other purposes is described. In the “total bit rate flag” field, for example, “0” indicating that the total bit rate field does not exist in the event or “1” indicating that the total bit rate field exists in the event is described. The Further, the “number of groups” field describes the number of groups of the component group descriptor.

  In the component group descriptors for the number of groups, there are a “component group ID” field and a “CA unit number” field. In the “component group ID” field, ID = “0” indicates the main group, and ID = 0x1 to 0xf indicates the subgroup.

  The “CA unit number” field includes a “CA unit ID” field for identifying a charging unit and a “component number” field indicating the number of components. The “component number” field is repeated for the number of components. There is a “Component Tag” field. The “component group ID” field and the “number of CA units” field including the “component tag” field are repeated for the number of CA units.

  Furthermore, the “component tag” field exists only when the “total bit rate flag” is “1” (it does not exist when it is “0”). The length of the text is shown. In the “text” field below, the length text indicated in the “text length” field is repeated for the text length.

  The grouping of the “component group ID” field or the “text length” field is repeated for the “number of groups” described in the “number of groups” field.

  FIG. 42 is a diagram illustrating the contents of component descriptors that can be used in the PMT of FIG. 36 and others (event information table EIT of FIG. 40, etc.).

  In this descriptor, the “descriptor tag” field is set to “0x50”, for example, and the descriptor length is indicated in the “descriptor length” field. In the “stream content” field, for example, “0x01” indicating a video is described. In the “component type” field, for example, “component type” is described. In the “component tag” field, for example, “a tag common in a program” is described. In the “ISO_639 language code” field, for example, “jpn” indicating a Japanese language code is described. In the “Text_Char” field, a character string such as “video” or “audio” can be entered.

  FIG. 43 is a diagram for explaining an example of the content of the component type shown in FIG. When the component type is “0x01”, for example, “video is 480 interlace (or 525 interlace) and the aspect ratio is 4: 3” is indicated. When the component type is “0x03”, for example, “video is 480 interlace (or 525 interlace), aspect ratio is 16: 9, and there is no pan vector” is indicated. When the component type is “0x04”, for example, it is indicated that “the video is 480 interlace (or 525 interlace) and the aspect ratio is larger than 16: 9 (such as a wide screen of a cinemascope)”.

  When the component type is “0xA1”, for example, “video is 480 progressive (or 525 progressive) and the aspect ratio is 4: 3” is indicated. When the component type is “0xA3”, for example, “video is 480 progressive (or 525 progressive), the aspect ratio is 16: 9, and there is no pan vector” is indicated. When the component type is “0xA4”, for example, “video is 480 progressive (or 525 progressive) and the aspect ratio is larger than 16: 9 (such as a wide screen of a cinemascope)” is indicated.

  When the component type is “0xB1”, for example, “video is 1080 interlaced (or 1125 interlaced) and the aspect ratio is 4: 3” is indicated. When the component type is “0xB3”, for example, “video is 1080 interlaced (or 1125 interlaced), the aspect ratio is 16: 9, and there is no pan vector” is indicated. When the component type is “0xB4”, for example, “video is 1080 interlaced (or 1125 interlaced) and the aspect ratio is larger than 16: 9 (such as a wide screen of a cinemascope)” is indicated.

  FIG. 44 is a diagram for explaining an example of the contents of a registration descriptor (descriptor).

  In this descriptor, the “descriptor tag” field is set to “0x5”, for example, and the descriptor length is indicated in the “descriptor length” field. In the “stream content” field, for example, “0x01” indicating a video is described. In the “format ID” field, format type, for example, “0x4d54524d” indicating MTRM is described. Here, MTRM is an abbreviation for MPEG Transport stream for Recording Media, and “0x4d54524d” is a value set in digital video (DVHS). In the “format version” field, for example, “0x10” is described as the format version.

  FIG. 45 is a diagram for explaining an example of the contents of a short format event descriptor.

  In this descriptor, the “descriptor tag” field is set to “0x4d”, for example, and the descriptor length is indicated in the “descriptor length” field. In the “0x4dISO_639_LANGUAGE_CODE” field, for example, a broadcasting system “ARIB: jpn” employed in Japan is described. In the “event_name length” field, for example, “program name length” is described.

  In the “event_name length” field, “event_name char” indicating the program name is repeated for the length of the program name.

  46 and 47 are flowcharts (overall transfer operation flow referring to APP_NAME) for explaining an example of the overall data transfer operation in the apparatus of FIG.

  Steps ST300 to ST312 in FIG. 46 are the same as steps ST200 to ST212 in FIG. 32 (overall playback operation) described above. In step ST314 of FIG. 46, the PID to be reproduced is determined from the PMT and set in the decoder unit 59, the STC unit 102 is reset, and transfer setting is performed in the decoder unit 59. Thereafter, the process at the time of cell transfer is started (step ST320). Steps ST320 to ST346 in FIG. 47 are the same as steps ST220 to ST246 in FIG. 33 (overall reproduction operation) described above. However, in FIG. 47, processing corresponding to steps ST234 to ST239 in FIG. 33 is not performed.

  As can be seen by comparing FIGS. 32 to 33 and FIGS. 46 to 47, the process of transferring data to the outside is almost the same as the normal reproduction process, but there are the following differences in contents. 46 to 47, in the cell playback process, the TS packet transfer unit 101 calculates the transfer time based on the ATS in the packet group, and sends the TS packet at a time that matches the transfer time. . Further, the internal clock (STC) and the external clock (PCR) are synchronized by reading the PCR from the PCR position information and adjusting the time of the STC unit 102 (STC reset in step ST314). Thus, in cell playback of stream-recorded data, the user can specify playback points on a time basis.

The data processing at the time of reproduction (FIGS. 46 to 47) can be briefly described as follows. That is,
<01> A disk check is performed to check whether the disk is a rewritable disk (R, RW, RAM) (step ST300). If the disk is not a rewritable disk (NO in step ST300), a message to that effect is returned (step ST302). ),finish.

  <02> The file system of the disc is read, and it is checked whether there is recorded data. If there is no recorded data, “not recorded” is displayed (step ST306), and the process is terminated.

  <03> The VMG file is read (step ST307), and the system information of each ORG_PGC_GI is extracted. Reproducible ORG_PGC and UD_PGC are selected and displayed on the screen (step ST305) (when there is method information in PGC_GI). The program and cell to be played are determined (the user selects them), and the file pointer (logical address) at which playback is to be started is determined (step ST308). Here, when playback in the recording order is selected, playback is performed according to ORG_PGCI. When playback is performed for each program, playback is performed according to UD_PGC of a number corresponding to the program to be played back.

  <04> The value of APP_NAME is read (step ST309), and it is checked whether or not the broadcasting system is compatible (step ST310). If the broadcasting system is not compatible (No in step ST310), that fact (" Is not displayed ”(step ST311), and the process is terminated (or moved to the next cell).

  <05> Processing at the start of reproduction is performed (step ST312).

  <06> Initial setting of each decoder is performed (step ST314).

  <07> Cell reproduction processing (described later) is performed to check whether or not the reproduction is completed (step ST330). In the case of completion (Yes in Step ST330), an error check is performed (Step ST340). In the case of an error (Yes in Step ST340), this is displayed (Step ST342), and when there is no error (Step ST340). (No in ST340), a reproduction end process is performed (step ST346), and this operation is ended.

  <08> When playback is not finished (No in step ST330), the next cell is determined from PGCI (step ST332). At that time, it is checked whether or not the setting of the decoder has been changed. If the setting has been changed, a change attribute is set in the decoder so that the setting of the decoder is changed to the next sequence end code.

  <09> It is checked whether or not the reproduction is finished. If the reproduction is not finished, the process returns to step ST320.

  FIGS. 48 and 49 are flowcharts (processing flow during cell transfer using both ADR_OFS in logical block units and packet units) for explaining a specific example of the process during cell transfer (ST320) shown in FIG.

  Steps ST3200 to ST3214 in FIG. 48 are the same as steps ST2200 to ST2214 in FIG. 34 described above (processing during cell playback). 49 is the same as the above-described FIG. 35 (process at the time of cell playback) except for steps ST3217 to ST3221 and ST3231 to ST3235.

  Steps ST3216 to ST3221 in FIG. 49 are processed by the decoder unit 59 in FIG. First, the position of the PCR is obtained from the PCR information in the packet group header 161, and the PCR is read out to the register 2 (not shown). Then, the PCR in the register 2 and the count value of the STC 102 are compared, and if there is a difference, the count value (corresponding to the reproduction time) of the STC unit 102 is corrected. Next, the ATS 151X in the packet group header 161 is read to the register 1 (not shown). Then, the ATS in the register 1 and the count value of the STC 102 are compared, and if they match, the first TS packet is transferred (step ST3217). Thereafter, the next IAPAT is read out and added to the register 1 (not shown), and the addition result is compared with the count value of the STC unit 102. If the two match, the next TS packet is transferred (step ST3221).

  In summary, the calculation related to TS packet transmission can be performed by the following method. That is, the first TS packet in the packet group is output when the ATS and STC values in the header match. For the second and subsequent TS packets, the sum of the ATS and the IAPAT immediately preceding this TS packet is compared with the value of the STC unit 102 and is sent when the two match.

  The above processing (steps ST3217 to ST3221) is repeated 85 times in the case of the packet group 140 of FIG. 24 (No in step ST3223). When the transfer of 85 TS packets is completed (Yes in step ST3223), the process proceeds to the next processing step ST3224 (processing similar to step ST2224 in FIG. 35). The rest is the same as the process of FIG. 35 (except that ST3231 to ST3233 are processes related to angle movement in FIG. 49).

  The process (FIGS. 46 to 49) at the time of cell transfer (when transferring data to the outside) will be briefly described as follows. That is, when transferring data to the outside, it is almost the same as normal playback processing, but within the cell playback processing, the TS transfer unit calculates the transfer time based on the ATS in the packet group, and at the time of transfer TS packets are sent out in time.

  Here, the calculation method is such that the first TS packet of the packet group is output when the value of the ATS in the header matches the value of the STC unit 102, and the second and subsequent ones are the IAPAT immediately before the previous ATS and TS packet. Is added to the value of the STC unit 102, and is sent when they match. FIG. 50 is a flowchart (processing flow at time search) for explaining another example of how time search is performed on recorded stream information such as a digital TV broadcast program in the apparatus of FIG. .

  <01> First, the user selects and decides the target title, playback start time, and stream number (1 in the case of one stream) (step ST400).

  <02> Program chain PGC, program PG, and cell CELL to be reproduced are determined based on information (title etc.) selected by the user (steps ST402 to ST404), and corresponding program chain information PGCI, program information PGI, cell information CI, etc. Is read from the management information PGCI.

  <03> Stream file information ESFI to be reproduced from the stream file information (ESFI) number in the cell information CI, stream object (ESOB) file, and broadcasting system are determined, and ESOBI to be reproduced with the ESOB number is determined (step ST406). ).

  <04> The playback time is compared with the cumulative playback time of each ESOBU, and information on the ESOB entry closest to the playback time and smaller than the playback time is read (step ST409).

  At that time, the ESOBU playback time (number of frames) is cumulatively added to the time offset TM_OFS, and an ESOBU entry closest to the target playback time and smaller than the target playback time is obtained.

  <05> Next, the ESOBU size up to the target ESOB entry is cumulatively added from the address offset ADR_OFS of the stream object (ESOB) to obtain the ESOBU address (step ST411).

  <06> Next, an address at which playback is to be started is obtained from the address of the reference picture in the target ESOBU entry information and the address of the target ESOBU.

  <07> The PCR address is obtained from the PCR information (this is represented by PCR_POS × 2 ^ PCR_POS_SHIFT) (step ST413). However, when the PCR information is in the Packet Group Header, the Packet Group Header is read. The PCR is read and set to STC (step ST418).

  <08> Decoding unit 59 is initially set for decoding (set to decode according to the broadcasting system) (step ST420), and the display start time is set to the target reproduction time.

  <09> The drive unit 51 is instructed to read the recording data from the address obtained in <06>, and data reading is started (step ST422).

  After the reproduction is started, a normal reproduction process (cell reproduction process or the like) is performed thereafter.

  FIG. 51 is a diagram for explaining an example of the contents of APP_NAME shown in FIG. 8, which is used in the VMG creation process (ST1026) in FIG. 52 (disc initialization process) described later. APP_NAME is, for example, a County ID (a code for identifying a country: Example: country code of telephone 01 = US, 81 = Japan ...), Authority ID (broadcasting scheme: 01 = ARIB, 02 = ATSC, 03 = DVB), Packet Format. (Packet format of stream: 01 = MPEG_TS ...), NETWORK type (network type 01 = terrestrial digital, 02 = CS, 03 = BS digital ...), broadcast system version (10 = 1.0, 11 = 1.1) …). Of these, the County ID, Authority ID, and Packet Format need to be provided by default in the device, but other than that, it can also be configured from received data (such as service information SI).

  Here, when APP_NAME is different for each stream object (ESOB), a part of the ESOBI configuration (after TS_ID in FIG. 9) may be changed for each stream object (ESOB).

  FIG. 52 is a flowchart (initialization process flow) for explaining the process of initializing the disk-shaped information storage medium shown in FIG. When the initialization process is started, the medium 100 (RAM disk or the like) is first formatted (step ST1000). After that, a DVD_HDR directory is used in a file system (not shown) to manage the HD-compatible SR object as a file. Is created (step ST1002). Thereafter, management information (RTR_VMG) is created (step ST1026). This management information has an area for recording APP_NAME 132512 in FIG. 8, and the digital broadcasting system scheduled for recording is inserted in this APP_NAME.

  According to various embodiments as described above, fine control operations corresponding to digital broadcasting can be realized.

<Points according to the embodiment>
<01> A PCR_POS shift amount is changed by PCR_POS_SHIFT to prepare for the case where the PCR position is far (“PCR_POS × 2 ^ PCR_POS_SHIFT” or “PCR_POS × 2exp (PCR_POS_SHIFT)” described in (2) of FIG. 12)). This PCR_POS_SHIFT is variable according to the recording rate (ST1504 in FIG. 28).

  When this index display method is used for PCR position display, the numerical value of 2exp (PCR_POS_SHIFT) can be increased even if the number of bits of PCR_POS_SHIFT is small, and a large shift amount can be expressed.

  In the case of <02> MPEG-TS (transport stream), AP_PKT_SZ is set to 0xbc (188 bytes), and PKT_GRP_SZ is set to 8 (for 8 packets; if 1 packet is 2 kbytes, it is equivalent to 16 kbytes) (FIG. 28). ST1508; see data structure in FIG.

  As a result, the stream structure to be decoded can be easily separated.

  <03> The minimum necessary information (such as FIG. 51) of PAT and PMT is included in the management information (VMG) (ST1026 in FIG. 52). Specifically, TS_ID, NETWORK_PID, and PMT_ID (ID of the PMT used in this stream object (ESOB)) in the PAT are stored in the VMG, and SERVICE_ID (Program_number in the PMT) and each elementary stream ( ES) PID is stored in the VMG, more detailed stream information (STI) is created only for video and audio in the ES, and set in the VMG.

  As a result, since there is a minimum amount of information in the VMG, the playback can be started even if there is no PAT and / or PMT at the place where the playback is started.

  <04> The PID constituting each group is set from the event information table (EIT in FIG. 40), and the main group is set in the management information (stream file information SFI or ESFI) (ST1518 in FIG. 28). At this time, it is preferable that a group number (such as Component_Group_Id in ST1710 in FIG. 29) can be designated in the playback order information (program PG).

  Since there is this SFI, for example, when the recorded content includes multi-view information, playback corresponding to multi-view is possible even if EIT does not exist at the playback start location of this multi-view.

  <05> Stream information STI is divided into video and audio, and VSTI and ASTI are prepared (ST1214 and ST1224 in FIG. 27). In digital broadcasting, as the types of video and audio increase, STI is expected to increase.

  If one type of STI covers all types of video and audio, the STI may increase considerably (the number of combinations of video types and audio types becomes enormous). If it is known, it is sufficient to cover only the types of VSTI and ASTI. As a result, various video and audio combinations can be handled with a small number of STIs.

  <06> LAST_MNF_ID (editor ID 13327 in FIG. 15) is set in the management information (ST284 in FIG. 20).

  For example, when a disk first recorded by a T company recorder is later edited (or additional recorded) by a M company recorder, it is recorded in the management information about which manufacturer and which model was edited (or additional recorded). As can be seen from the last_MNF_ID assigned.

  <07> The representative PID / group ID is stored in the cell information (CI) (ST1710 in FIG. 29).

  At the time of reproduction, by determining the PID of the stream to be reproduced based on the stored representative PID / group ID value and service information (SI), reproduction corresponding to multi-view becomes possible.

  The address representation of the <08> PCR position is divided into ADR_OFS132241 (FIG. 10) of logical block accuracy (LB unit) and packet accuracy (packet unit). The target address is represented by PCR_POS multiplied by a value of 2 raised to the power of “PCR_POS_SHIFT” (FIG. 12).

  As a result, the address can be managed efficiently (without allocating a large number of bits for address management).

  <09> Information on various digital broadcasting systems (FIG. 51) is set in APP_NAME 132512 (FIG. 8) in management information (RTR_VMG) (ST1026 in FIG. 52).

  In this way, it is possible to reproduce only the recorded contents (corresponding stream) of the method set in APP_NAME (YES in ST210 in FIG. 32).

<Another expression of the invention according to the embodiment>
(A) It is composed of a management area and a data area. In the data area, data is divided and recorded in one or more objects. One object is composed of one or more data units, and the data unit is 0. .Video and audio to be played back within 4 seconds to 1 second are packetized and recorded in a plurality of packets, and the PGC information for managing the playback order is included in the management area, and the PGC information manages the program CELL management information (CI 1334 in FIG. 15 / ID 13344 to be referred to) in a recordable information recording medium that includes management information to manage and management information to manage CELL, and further includes management information to manage objects. Includes the PID of the stream representative of the stream to be reproduced (representative PID of ST1710 in FIG. 29). Information recording medium characterized and.

  (B) Consists of a management area and a data area. In the data area, data is divided and recorded in one or more objects. One object is composed of one or more data units. .Video and audio to be played back within 4 seconds to 1 second are packetized and recorded in a plurality of packets, and the PGC information for managing the playback order is included in the management area, and the PGC information manages the program CELL management information (CI 1334 in FIG. 15 / ID 13344 to be referred to) in a recordable information recording medium that includes management information to manage and management information to manage CELL, and further includes management information to manage objects. ID of the group of streams to be played back (Component_Group_Id of ST1710 in FIG. 29) Information recording medium, characterized in that it contains.

  (C) In the above (A) or (B), the object management information further includes group information (FIG. 41) for determining a combination of reproduction.

  (D) It consists of a management area and a data area. In the data area, data is divided and recorded in one or more objects. One object is composed of one or more data units, and the data unit is 0. .Video and audio to be played back within 4 seconds to 1 second are packetized and recorded in a plurality of packets, and the PGC information for managing the playback order is included in the management area, and the PGC information manages the program Management information for managing the CELL and management information for managing the CELL, and in the recordable information recording medium including the management information for managing the object, two of the information representing the PCR address from the head of the data unit. The information of the exponent part (PCR_POS_SHIFT) is included in the general information (ESOB_GI132253 in FIG. 9), and each data unit DOO Information Information recording medium, characterized in that the value of the PCR position (PCR_POS) information 132234 is included in (ESOBU_ENT132262 in Figure 12).

  (E) It is composed of a management area and a data area. In the data area, data is divided and recorded in one or more objects. One object is composed of one or more data units, and the data unit is 0. .Video and audio to be played back within 4 seconds to 1 second are packetized and recorded in a plurality of packets, and the PGC information for managing the playback order is included in the management area, and the PGC information manages the program 2 of the information representing the PCR address from the beginning of the data unit in a recordable information recording medium including management information for managing the management information and CELL management information. Information (PCR_POS_SHIFT) in the general information (ESOB_GI132253 in FIG. 9) and each data Knit unit header information recording medium characterized in that it contains a value (position information of the PCR) information 155X to (Packet_Group_Header161 in Figure 16) of (ESOBU 134 in FIG. 16).

(F) Consists of a management area and a data area. In the data area, data is divided and recorded in one or more objects. One object is composed of one or more data units, and the data unit is 0. .Video and audio to be played back within 4 seconds to 1 second are packetized and recorded in a plurality of packets, and the PGC information for managing the playback order is included in the management area, and the PGC information manages the program In a recordable information recording medium that includes management information to manage and management information to manage CELL, and further includes management information to manage objects.
The data length (AP_PKT_SZ in FIG. 9) 13243106 and the number information (see FIG. 9) of the packet included in the data unit (ESOBU in FIGS. 1, 2 and 16) in the object management information (ESOB_GI in FIGS. 9 and 10). 10 ESOB_S_PTK_POS132242 / ESOB_E_PTK_POS132243).

  (G) It is composed of a management area and a data area. In the data area, data is divided and recorded in one or more objects. One object is composed of one or more data units, and the data unit is 0. .Video and audio to be played back within 4 seconds to 1 second are packetized and recorded in a plurality of packets, and the PGC information for managing the playback order is included in the management area, and the PGC information manages the program Management information for managing the CELL and management information for managing the CELL, and further on the recordable information recording medium including the management information for managing the object, the object management information (ESOB_GI in FIG. Information corresponding to Authority ID in FIG. 51 (APP_NAME in FIG. 8) is included. Recording medium.

  (H) In the apparatus using the medium of (G), a method detection unit (main MPU in FIG. 18; ST1116 in FIG. 25) that checks the method of data input from the outside and determines whether the method is compatible. And a determination unit (main MPU in FIG. 18; ST1122 in FIG. 25), and when it is not possible to respond (No in ST1122 in FIG. 25), it displays that fact and ends (ST1124 in FIG. 25). A device characterized by that.

  (I) In the apparatus using the medium of (G) above, a method detection unit (main MPU in FIG. 18; ST209 in FIG. 32 or ST309 in FIG. 46) for examining the method of data in the medium can be reproduced. And a reproducibility determination unit (main MPU in FIG. 18; ST210 in FIG. 32 or ST310 in FIG. 46), and if not compatible (NO in ST210 in FIG. 32 or NO in ST310 in FIG. 46) An apparatus characterized by displaying a message to the effect (ST211 in FIG. 32 or ST311 in FIG. 46).

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment. The present invention also provides computer-readable information recording a program for causing a computer to execute predetermined means (or for causing a computer to function as predetermined means or for causing a computer to realize predetermined functions). It can also be implemented as a recording medium.

The figure explaining the data structure which concerns on one embodiment of this invention. The figure explaining the relationship between the reproduction | regeneration management information layer in the data structure which concerns on one embodiment of this invention, an object management information layer, and an object layer. The figure explaining the storage method of the navigation management information file in the data structure concerning one embodiment of this invention. The figure explaining an example of how a part (RTR_VMGI) of one management information (RTR_VMG) recorded in the AV data management information recording area shown in FIG. 1 is configured. The figure explaining an example of how the other part (ESFIT) of one management information (RTR_VMG) is comprised in the data structure which concerns on one embodiment of this invention. The figure explaining an example of how the content of each component of the other part (ESFIT) of the management information shown in FIG. 5 is comprised. Video attribute information (V_ATR) and audio attribute information (A_ATR) included in the stream information (one of ESOBI_VSTI # 1 to #m and one of ESOBI_ASTI # 1 to #m) included in the management information (ESFIT) shown in FIG. The figure explaining an example of how () is comprised. The figure explaining an example of how the content of ESFI_GI and ESOBI is comprised among each component of the other part (ESFIT) of the management information shown in FIG. The figure explaining an example of how the content of ESOB_GI shown in FIG. 8 is comprised. The figure explaining an example of how the content (especially ESOB elementary stream (ES), ES group, MAP_GI, and ES_MAPI) of ESOB_GI shown in FIG. 8 is comprised. The figure explaining an example of how the content of ES_MAP_GI shown in FIG. 10 is comprised. The figure explaining an example of how the content (especially the content of ESOBU_ENT) of ES_MAP_GI shown in FIG. 10 is comprised. The figure explaining an example of how the content (especially the content of program chain information ORG_PGCI) of the management information recording area | region RTR_ESMG is comprised. The figure explaining an example of how the content of management information recording area | region RTR_ESMG (especially the content of playlist information (or user-defined PGC information table)) is comprised. The figure explaining an example of how the contents (especially the contents of program chain general information, program information, and cell information) shown in FIG. 13 and FIG. 14 are comprised. The figure explaining an example of how the data unit (ESOBU) for stream objects shown in FIG. 1 or FIG. 2 is comprised. Packet arrival time (ATS), validity information (DCI_CCI_SS), display control information (DCI), copy generation management information (or copy control information CCI), and increment of packet arrival time included in the packet group header shown in FIG. The figure explaining an example of how (IAPAT) and PCR position information (PCR_LB number number etc.) are comprised. The block diagram explaining an example of the apparatus which records and reproduces AV information (digital TV broadcast program etc.) on an information recording medium (optical disc, hard disk, etc.) using the data structure which concerns on one embodiment of this invention. The flowchart figure explaining an example of the whole operation | movement of the apparatus of FIG. 18 (whole operation | movement process flow). The flowchart figure explaining an example of the content of the edit process (ST28) shown in FIG. 19 (edit operation process flow). FIG. 19 is a flowchart (recording flow) for explaining an example of a recording operation (part 1) of the apparatus of FIG. 18; FIG. 19 is a flowchart (recording flow) for explaining an example of a recording operation (part 2) of the apparatus of FIG. 18; FIG. 19 is a flowchart for explaining an example of interrupt processing in the operation of the apparatus of FIG. 18 (interrupt processing flow). FIG. 23 is a flowchart for explaining an example of the contents of the buffer fetch process (ST130) shown in FIG. 22 (buffer fetch process flow). FIG. 3 is a flowchart for explaining processing (part 1) before starting recording on the disk-shaped information storage medium shown in FIG. 1 (processing flow before recording). FIG. 3 is a flowchart for explaining a process (part 2) before starting recording on the disk-shaped information storage medium shown in FIG. The flowchart figure (STI setting process flow) explaining an example of the content of the stream information (VSTI and ASTI) creation process (ST120) shown in FIG. FIG. 23 is a flowchart (stream file information creation processing flow) for explaining an example of the contents of stream file information (SFI or ESFI) creation processing in the recording end processing (ST150) shown in FIG. The flowchart figure (program creation process flow) explaining an example of how a program creation including the process (ST1710) which sets ID referred at the time of reproduction | regeneration is permitted when mixing in a program and a playlist unit is permitted. The flowchart figure (program creation process flow) explaining an example of how a program creation including the process (ST1710) which sets ID referred at the time of reproduction | regeneration is performed, when mixing is prohibited in a program chain unit. The flowchart figure (program creation process flow) explaining an example of how a program creation including the process (ST1710) which sets ID referred at the time of reproduction | regeneration is performed, when mixing is permitted per cell. FIG. 19 is a flowchart for explaining an example of the reproduction operation (part 1) of the apparatus in FIG. 18 (overall reproduction operation flow with reference to APP_NAME). FIG. 19 is a flowchart for explaining an example of the reproduction operation (part 2) of the apparatus in FIG. 18 (overall reproduction operation flow); FIG. 19 is a flowchart for explaining an example (part 1) of processing at the time of cell playback in the apparatus of FIG. 18 (processing flow at the time of cell playback using both ADR_OFS in logical block units and packet units); FIG. 19 is a flowchart for explaining an example of a process (part 2) during cell playback in the apparatus of FIG. 18 (process flow during cell playback); The figure explaining the data structure example of the program map table (PMT) which can be used with the apparatus of FIG. The figure which illustrates the contents of the digital copy control descriptor which can be used in PMT of FIG. 36 and others (service description table SDT, event information table EIT, etc.). The figure explaining an example of how digital copy control is operated with respect to video data. The figure explaining an example of how digital copy control is operated with respect to audio data. The figure explaining the example of a data structure of the event information table (EIT) which can be used with the apparatus of FIG. The figure explaining an example of the content of a component group descriptor. The figure which illustrates the content of the component descriptor which can be used by PMT of FIG. 36 and others (event information table EIT of FIG. 40, etc.). The figure explaining an example of the content of the component type shown in FIG. The figure explaining an example of the content of the registration descriptor (Registration descriptor). The figure explaining an example of the content of a short format event descriptor. FIG. 19 is a flowchart for explaining an example of the overall data transfer operation (part 1) in the apparatus of FIG. 18 (overall transfer operation flow with reference to APP_NAME). FIG. 19 is a flowchart for explaining an example of the overall data transfer operation (part 2) in the apparatus of FIG. 18 (overall transfer operation flow); 47 is a flowchart for explaining a specific example (No. 1) of the process (ST320) at the time of cell transfer shown in FIG. 47 (process flow at the time of cell transfer using both ADR_OFS in logical block units and packet units). FIG. 48 is a flowchart for explaining a specific example (part 2) of the cell transfer process (ST320) shown in FIG. 47 (process flow during cell transfer); FIG. 19 is a flowchart for explaining an example of how time search is performed on recorded stream information such as a digital TV broadcast program in the apparatus of FIG. 18 (processing flow at time search). The figure explaining an example of the content of APP_NAME shown in FIG. The flowchart figure explaining the process which initializes the disk-shaped information storage medium shown in FIG. 1 (initialization process flow).

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Information recording medium (DVD-RAM disc etc.); 121 ... AV data recording area; 122 ... VR object group recording area; 130 ... AV data management information recording area; 131 ... Extend stream object group recording area; Stream object (ESOB); 134 ... Extended stream object unit (ESOBU); 140 ... Packet group; 160 ... DVD transport stream Packet recording area; 161 ... Packet group header; 162 ... MPEG transport stream (MPEG-TS) 163 ... Incremental application packet arrival time (IAPAT); 10 ... Playback information management layer; 11 ... Program chain (PGC); 12 ... Program (PG); ... cell; 20 ... stream object management information layer; 21 ... extended stream object information (ESOBI); 22 ... extended stream object unit information (or global information) (ESOBUI); 23 ... video object management information layer; 24 ... video Object information (VOBI); 25 ... Video object unit entry (VOBUUE); 30 ... Stream object (SOB) layer; 35 ... Video object (VOB) layer; 36 ... Video object (VOB); 37 ... Video object unit (VOBU) 38 ... Pack; 51 ... Disk drive part; 59 ... Decoder part; 74 ... Digital interface (IEEE1394 etc.); 79 ... Encoder part; 80 ... Main MPU part (control) ); 83 ... Set-top box portion (satellite digital tuner); 89 ... terrestrial digital tuner; 100 ... information recording medium; 100a ... hard disk drive.

Claims (1)

In an information recording medium configured to record a digital stream signal conforming to a plurality of digital broadcasting systems,
The information recording medium has a management area and a data area,
The management area is configured to record object management information for each of the plurality of object files,
The management area includes stream data management information,
The stream data management information includes medium management information, stream object management information, and program chain information.
The program chain information includes a plurality of program information,
Each program information includes a unique program index,
The stream object management information includes, as information about stream data belonging to the program specified by the program index, a code for identifying a broadcasting system of digital broadcasting, packet identification information of a program map table, packet identification information of a program clock reference, An information recording medium comprising:

Images