JP2004328800A - Information storage medium and information recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information storage medium which stores a stream adaptive to a digital TV broadcast and the management information suited to the management of the stream. <P>SOLUTION: The storage medium includes a management area (6) for recording the management information and a data area (7) for recording content data, the content data to be recorded in the data area include a plurality of object data, and each of the object data includes a plurality of data units. Each of the data units includes a plurality of packs, each of the packs includes a plurality of packets, and the management information to be recorded in the management area includes program chain information for managing the reproduction order of data contained in the object data. The program chain information includes cell information, and the cell information includes information for specifying a target to be reproduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an information storage medium for storing video / audio signals distributed by digital broadcasting. In addition, the present invention relates to an information recording device that records a video / audio signal or the like distributed by digital broadcasting on an information storage medium.

  In recent years, TV broadcasting has entered the age of digital broadcasting. Therefore, there is a need for a streamer for recording digital TV broadcasts.

  In addition, MPEG-TS (Transport Stream) defined by the MPEG (Moving Picture Image Coding Experts Group) standard is mainly used as the data transfer format of digital TV broadcasting currently being broadcast in Japan, the United States, and Europe. This is the situation. In the field of digital broadcasting using moving images, the MPEG-TS system is expected to become the standard in the future.

  As a device for recording digital broadcast data transmitted by MPEG-TS, D (Digital) -VHS (Video Home System) using a tape as a recording medium is currently on the market. However, in consideration of accessibility and the like, it is a situation where it is desired to release a device using an optical disk as a recording medium.

  Digital TV broadcasting is broadcast from a broadcasting station through a communication satellite, and is received and reproduced by an STB (Set Top Box). The STB is a device that performs expansion / reproduction processing on scrambled data based on a key code distributed from a broadcasting station. The data is scrambled to prevent unauthorized reception by a user who has not made a contract with a broadcasting station.

  Within the STB, digital data is received by the tuner system. When the received data is reproduced as it is, the digital data is descrambled by the digital expansion unit, the data is decoded by the MPEG decoder unit, converted into a TV signal by the video encoder unit, and displayed on the TV.

  When streaming the broadcast data, the digital data received from the tuner system is recorded in the D-VHS through the IEEE 1394 (the Institute of Electrical and Electronics Engineers) I / F. Here, IEEE 1394 is an interface standard for exchanging commands and transmitting and receiving data.

  When reproducing recorded broadcast data, D-VHS data is read and sent to a data decompression unit in the STB for reproduction.

  However, in the D-VHS streamer, the broadcasted bit stream is recorded as it is on a tape. Therefore, a plurality of programs are multiplexed and recorded on the tape. As a result, at the time of reproduction, even when reproducing from the beginning or in the middle, all data is sent as it is, and the STB selects and reproduces a desired program.

  Also, random access is not possible because recording is performed on a tape medium. Therefore, it is difficult to quickly jump to a desired position in a desired program for reproduction.

  For this reason, a streamer standard that uses a large-capacity disk medium such as a DVD (Digital Versatile Disk) -RAM currently on the market is conceivable.

  In addition, terrestrial digital broadcasting is scheduled to start in a few years, so that free digital broadcasting will start. In that case, it is conceivable that the broadcast is performed without scrambling.

  Since the streamer standard targets scrambled broadcasts and broadcasts performed by various broadcasting stations around the world, the minimum playback unit in video content is determined by the data amount based on the ECC block. Therefore, in the case of trick play, even if data is read from a target address, there is no I picture that can be played, and the start of playback may be greatly shifted. In other words, it is a standard that makes it difficult to perform trick play.

  Here, a standard that starts with a PAT (Program Association Table) and a PMT (Program Map Table) in video content is described in JP-A-2000-268537. However, in Japanese Unexamined Patent Application Publication No. 2000-268537 and the streamer standard, since there is no TMAP information similar to that of DVD-VR, the processing with DVD-VR cannot be unified.

  In a streamer system compatible with digital TV broadcasting, there is a disadvantage that detailed management cannot be performed in special reproduction of video content data.

  An object of the present invention is to provide a stream compatible with digital TV broadcasting and an information storage medium for storing management information suitable for managing the stream. Another object of the present invention is to provide an information recording apparatus for recording a stream compatible with digital TV broadcasting and management information suitable for managing the stream.

  In order to solve the above problems and achieve the object, an information storage medium and an information recording device of the present invention are configured as follows.

  (1) An information storage medium of the present invention includes a management area for recording management information and a data area for recording content data, and the content data recorded in the data area includes a plurality of objects. Data, each object data includes a plurality of data units, each data unit includes a plurality of packs, each pack includes a plurality of packets, the management information recorded in the management area, The program chain information for managing the reproduction order of the data included in the object data is included. The program chain information includes cell information, and the cell information includes information for specifying a reproduction target.

  (2) The present invention is an information recording apparatus that records information on an information storage medium including a management area and a data area, and records management information in the management area and object data in the data area. Recording means for performing, reading means for reading object data management information for managing the object data included in the management information, and identification information of object data to be reproduced based on the object data management information read by the reading means. Determining means for determining.

  According to the present invention, it is possible to provide an information storage medium for storing a stream compatible with digital TV broadcasting and management information suitable for managing this stream. Further, according to the present invention, it is possible to provide an information recording apparatus for recording a stream compatible with digital TV broadcasting and management information suitable for managing this stream.

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

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

  The present invention is based on ARIB (Association of Radio Industries and Businesses) STANDARD, which is a standard of domestic digital broadcasting, based on TS packets such as PAT, PMT, and SI as the minimum playback unit in video content, By making it compatible with the streamer standard, it is easy to perform trick play and the like.

  Therefore, the present invention provides a DVD-Streamer format in which the smallest playback unit in video content is the smallest unit of video content starting with a TS packet such as PAT, PMT, or SI, and more detailed information on the minimum unit is stored. A recording function is added to make it easier to perform special playback.

  In DVD, management data is formatted based on the currently formatted DVD-Video format. However, DVD-Video is not formatted for satellite broadcasting or the like. For this reason, it is considered impossible to perform special reproduction or the like.

  FIG. 1 is an example of a schematic configuration of an information recording / reproducing apparatus that records a digital TV broadcast compatible stream on an information storage medium 100 and reproduces a digital TV broadcast compatible stream stored in the information storage medium 100. FIG.

  As shown in FIG. 1, the information recording / reproducing apparatus includes an MPU unit 10, an encoder unit 20, a decoder unit 30, a disk drive unit 50, a D-PRO unit 51, a temporary storage unit 52, an A / V input unit 53, a terrestrial digital Tuner unit 54, satellite antenna 55, STB unit 56, STC (System Time Counter) unit 57, V mixing unit 58, frame memory unit 59, D / A unit 60, TV 61, speaker 62, key input unit 63, display unit 64 It has.

  The MPU unit 10 includes a support management information detection unit 11, a management data creation unit 12, a support information addition unit 13, and a work RAM 14. The encoder unit 20 includes an A / D unit 21, a selector 22, a video encoding unit 23, an audio encoding unit 24, a formatter unit 25, and a buffer memory unit 26. The decoder unit 30 includes a separation unit 31, a memory 32, a TS packet transfer unit 33, a video decoding unit 34, an SP decoding unit 35, an audio decoding unit 36, a memory 37, a memory 38, a reduced image generation unit 39, and a V-PRO unit 40. , D / A unit 41.

  FIG. 3 is a diagram showing an example of the data structure of the information storage medium of the present invention. As shown in FIG. 3, the information storage medium includes a lead-in area 1, a volume and file manager information area 2, a data area 3, and a lead-out area 4. The data area 3 has a DVD area 5. The DVD area 5 has a control information area 6 and a video object area 7. In the control information area 6, for example, management information is stored. In the video object area 7, for example, the SOBS shown in FIG. 2 is stored.

  FIG. 2 is a diagram illustrating an example of the data structure of SOBS.

  The SOBS includes a plurality of SOBs (stream objects). Each SOB includes a plurality of SOBUs (Stream Object Units). Each SOBU includes a plurality of S_PACKs in which TS streams are recorded. Each S_PACK includes a pack header, a packet header, a substream ID, a packet access pointer, an arrival time (APAT: Application Packet Arrival Time) at the time of recording, a TS packet, and a padding packet.

  The packet access pointer indicates the address of the first TS packet in the pack by the address in the pack. When the packet access pointer is 2034, it means that the head of the packet does not exist in one pack.

  However, as shown in FIG. 9, the pack at the head of the SOBU must always be aligned with the head of the packet. This makes it possible to cope with a case where the packet size does not fit in one pack. One SOBU is configured to include n PATs and PMTs with PAT, PMT or SI at the head. Here, n is an integer of 1 or more. FIG. 10 shows the contents of the PAT, and FIG. 11 shows the contents of the PMT.

  Next, the management data structure will be described with reference to FIGS.

  First, the flow of signals during recording will be described. The TS packet data received by the STB unit 56 is packed and recorded by the formatter unit 25. At this time, the presence or absence of each piece of information is detected, stored in the work RAM 14, and recorded as management information at the end of recording.

  When the broadcast is not the STB unit 56 but a digital terrestrial wave, a signal is received from the tuner 54 in the set. In this case, it is assumed that the terrestrial wave has not been scrambled this time, and it can be directly reproduced (decoded). Basically, this is the same as recording via the STB unit 56, but the fact that it has been received by the internal tuner is recorded in the management information.

  In addition, at the time of reproduction, the pack data read from the information storage medium is analyzed by the separation unit 31, and in the case of a pack containing TS packets, the pack data is sent to the TS packet transfer unit 33. It is checked whether the data is more fetched data. In the case of the STB unit 56, the TS packet transfer unit 33 transfers only the TS packet at the same time interval as when the data arrives.

  The STB unit 56 performs decoding, generates an AV signal, and displays the AV signal on the TV 61 through the video encoder unit 20 in the streamer.

  In the case of a digital terrestrial wave, the digital terrestrial signal is sent to each of the internal decoding units 34, 35, and 36 to perform decoding processing (reproduction). At this time, the TS packet transfer unit 33 sends the data to each decoder as elementary data.

  In a system for broadcasting (distributing) a compressed moving image such as a digital TV broadcast or a broadcast using a wire such as the Internet, a TS stream, which is a common basic format, is divided into a packet management data portion and a payload.

  The payload contains the data to be reproduced in a scrambled state. According to ARIB, PAT (Program Association Table), PMT (Program Map Table), and SI (Service Information) are not scrambled.

  The reproduction target is MPEG video data, Dolby AC3 audio data, MPEG audio data, and the like. Further, information such as PAT, PMT, and SI that are not directly related to the reproduction target but are necessary for reproduction. EPG (program information) and the like.

  The PAT contains the PID (Packet Identification) of the PMT for each program, and the PMT records the PID of video data and audio data.

  Thus, as a normal reproduction procedure of the STB, when the user determines a program based on the EPG 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. Determine, read the target PMT according to the PID, determine the PID of the video and audio packets to be included in the PMT, read the video and audio attributes by the PMT and SI, and set them to each decoder. The video and audio data are cut out and reproduced according to the PID. Here, PAT, PMT, SI, etc. are transmitted every several hundred ms in order to be used for intermediate reproduction.

  When these data are recorded on a disk medium (information recording medium 100) such as a DVD-RAM, it is more advantageous to record the broadcast data as it is as digital data.

  However, at present, the highest bit rate of DVD-RAM is 10.08 Mbps, so that it is impossible to record a satellite broadcast (20 Mbps or more) in which all channels are multiplexed. Therefore, when recording, it is necessary to select and record one program.

  However, since the next generation DVD has 30 Mbps or more, it can be recorded as it is.

  If a plurality of streams are to be recorded at the same time, the SOBI has the number of streams to be recorded, the PMT corresponding to each stream is stored, and the number of the stream to be reproduced (channel number or PMT PID) is recorded in C_PBI. .

  Furthermore, when recording on a disk medium, data for managing the recorded data is required in order to satisfy the desire that the user wants to start playback of a desired program from a desired time or to perform fast forward. Come.

  However, if the data to be reproduced is scrambled, it is difficult to create the management data from the data to be reproduced itself.

  Therefore, management data can be created using data in a packet header that is control data in a TS stream packet, PAT packets that are PSI (Program Specific Information) data in a TS stream, and data of a PMT packet. Conceivable.

  The problem to be noted here is that there is a possibility that there is information that is not supported in the contents of these packet headers depending on the type of satellite broadcasting.

  Therefore, when the management data is suddenly created by the above-described method, there is a case where the management data cannot be created and cannot be recorded for each satellite broadcast.

  Therefore, according to the present invention, at the time of recording, information of a packet header used by satellite broadcasting and information indicating whether there is a PAT or PMT are stored in the management information, and management data is created and reproduced according to the supported information. At times, the service contents are changed according to the support information, and only possible services are provided.

  First, a method for detecting support information is disclosed in JP-A-2000-268537.

  Next, the management methods are described below.

  This is a PAT and PMT packet, in which the PID of each data for reproducing a program is recorded.

  This is inserted at intervals of several 100 ms to several seconds. When a program is viewed from the middle, reproduction is started from this data.

  Therefore, by utilizing this, it can be used as a data delimiter as shown in FIG.

  However, since the recording may not be started from PAT, PMT or SI at the start of recording, a flag indicating whether PAT, PMT or SI exists at the beginning of SOBI is provided, and the PID is set in advance by the EPG or the broadcasting station. If such information is known, the PAT and PMT are created from the information, and the management information is stored. If there is no such information, the PAT and PMT closest to the top are copied and stored. If the position of an I-picture such as a random access indicator can be specified in the recorded TS packet, information indicating the position, an application packet arrival time (APAT) (IAPAT: Incremental APAT) from the beginning of the previous SOBU. ), The address from the beginning of the target SOB in the SRO file is stored in SOBI.

  In the SOBU separation process, as shown in FIG. 9, the SOBU can be reproduced halfway for each SOBU by matching the head of the SOBU with the head of a PAT packet or a PMT packet. However, the problem here is that the video data after the PAT or PMT does not always start from an I picture, so that a slight time lag may occur until an I picture is found.

  Next, with reference to FIGS. 12, 13, 14, 15, and 20, data processing during recording will be described.

  (1) When the MPU unit 10 receives a recording command from the key input unit 63, the MPU unit 10 reads management data from the drive unit 50 and determines an area to write. At this time, as a pre-recording process (ST101), the disc is checked to determine whether it is a next-generation DVD disc (a high-capacity, high-rate recordable next-generation DVD-RAM disc). Is set so that recording of multiple streams is permitted, and otherwise (in the case of the current DVD-RAM or DVD-RW), multiple streams are prohibited. In addition, the file system is checked to determine whether or not recording is possible. If recording is possible, a recording position is determined (ST103). If recording is not possible, the user is informed of the fact and processing is stopped. .

  (2) The determined area is set in the management area to be written, the write start address of the video data is set in the drive unit 50, and preparation for recording data is performed.

  (3) The STB 56 issues an instruction to read an EPG (Electronic Program Guide) (ST104). The STB unit 56 prepares the latest EPG at that time (received or EPG data stored in the work memory in the STB unit 56), and returns the data to the MPU unit 10. In the case of terrestrial digital, an EPG screen is created from data of data broadcasting inserted in digital broadcasting, and the data is stored in a work.

  (4) The MPU unit 10 displays the EPG data and allows the user to select a program to be recorded. When a program to be recorded is determined (ST105), support information is fetched from the STB unit 56 (ST106). At this time, if the support information does not exist in the STB unit 56, it is checked whether or not the corresponding information is present during recording, and is used as a substitute. Also, in the case of terrestrial digital, support information is configured by the broadcast station of the program to be broadcast based on support information determined in advance (ST108).

  (5) The time is reset in the STC unit 57 (ST109). Here, the STC unit 57 performs recording and playback using a timer of the system based on this value.

  (6) A target program to be recorded is designated in the STB unit 56, and reception is started. In the case of terrestrial broadcasting, after a normal channel selection operation, the PAT is read, the PID for capturing the PMT of the target program is determined, the target PMT is read, and each data (to be recorded) to be decoded (recorded) is read. Video, audio). At this time, the PAT and PMT are stored in the work RAM unit 14 of the MPU unit 10 and are written in the management information. Here, in the case of a system without PAT and PMT, since the PID is determined in advance, the PMT is created according to the PID and written in the management information.

  (7) Write the data of the VMG file to the file system and write the necessary information to the VMGI (ST110). At this time, if the support information is known, the information is also written.

  (8) Recording settings are made for each unit (ST111). At this time, the setting of the division of each data and the setting of receiving the TS packet are performed in the formatter unit 25. At this time, the PID of the data to be recorded is set, and only the target video stream is recorded.

  (9) The stream data to be recorded is received from the STB unit 56 or the terrestrial digital tuner unit 54, taken into the encoder unit 20, and packed. If it is detected at the start of recording that the recording does not start with PAT or PMT, a flag is set in the VOBI of the management information, and the first PAT or PMT after the start of recording is stored in the work RAM 14, and Write.

  (10) During recording, periodically (before the buffer memory unit 26 of the formatter unit 25 becomes full), the division information is stored in the work RAM 14 of the MPU unit 10 (ST112 to 113). The segmentation information here is the segmentation information of the SOBU. The start address of the SOBU, the pack length of the SOBU, and if the address of the I-picture are known, the start address, the end address, and the arrival time of the SOBU (APAT). And so on.

  (11) The remaining capacity is checked (ST115). If the remaining capacity is reduced by a certain amount or more (ST116), the remaining capacity reduction process (ST117) is executed.

  (12) It is checked whether or not the recording is completed (whether the recording end key is input or the remaining capacity is exhausted) (ST118), and at the end, the remaining separation information is taken from the formatter unit and added to the work RAM. Then, the data is recorded in the management data (VMGI), and the remaining information is recorded in the file system (ST119).

  (13) If the processing is not to be ended, the process proceeds to ST112, and data capture and reproduction are continuously performed.

  The flow of the video signal is as follows. First, the TS packet input from the STB unit 56 is input to the formatter unit 25. In the case of terrestrial digital broadcasting, TS packet data is read from the terrestrial digital tuner unit 54 and input to the formatter unit 25. Here, the time from the start of the transfer is read from the value of the STC 57 and stored in the buffer RAM as management information. This information is sent to the MPU unit 10 together with the separation information, and is recorded in the management information. Also, SOBU isolation information is created as isolation information, and is sent to the MPU unit 10 periodically. The formatter unit 25 temporarily stores the TS packet data in the buffer memory unit 26, then packs the input TS packet data, formats it into a pack sequence shown in FIG. 7, and sends it to the D-PRO unit 51. input.

  Here, when scramble such as terrestrial digital broadcasting is not applied, the data is sent to the decoder unit 30 at the same time as the D-PRO unit 51 so as to be displayed on the TV, and is reproduced. However, in this case, the MPU unit 10 makes settings for reproduction in the decoder unit 30, and thereafter, the decoder unit 30 automatically performs reproduction.

  The D-PRO unit 51 puts ECCs together in 16 packs as an ECC group and sends them to the drive unit 50. However, when the drive unit 50 is not ready for recording on the disc, the data is transferred to the temporary storage unit 52 and waits until data is ready to be recorded, and recording is started when the preparation is completed. Here, the temporary storage unit 52 is assumed to be a large-capacity memory in order to hold recording data for several minutes or more by high-speed access.

  However, the microcomputer can read and write the D-PRO unit 51 through the microcomputer bus to read and write the file management area and the like.

  When recording a plurality of streams that are broadcast simultaneously, the number of streams to be recorded, PAT, and PMT (for the number of streams) are recorded at the number of SOBI streams when a plurality of recordings are started. At this time, the CELL creates the number of streams to be recorded, and the C_PBI stores the program number of the stream to be reproduced and the start time and end time of the CELL using the APAT. At this time, it is conceivable that the PID of the PMT is directly stored instead of the program number. Furthermore, it is conceivable to record the PID of the video stream and the audio stream of the stream to be reproduced.

  With reference to FIGS. 16 and 17, data processing at the time of reproduction will be described.

  (1) The disc is checked (ST401), and it is checked whether the disc is a rewritable disc (DVD-R, DVD-RW, DVD-RAM). If the disc is not a rewritable disc, this fact is returned and the process ends (ST402).

  (2) The file system of the disc is read, and it is checked whether there is a volume structure (ST403). If there is no volume structure, "not recorded" is displayed and the process ends (ST405).

  (3) It is checked whether there is a DVD_RTR directory (ST404). If there is no DVD_RTR directory, "not recorded" is displayed and the process ends (ST405).

  (4) It is checked whether or not there is an SRO file (ST410). If there is no SRO file, "No recorded" is displayed and the process ends (ST412).

  (5) The VMG file is read (ST409), the program and cell to be reproduced are determined (let the user select it) (ST411), and the file pointer (logical address) to start reproduction is determined. Here, when the reproduction in the recording order is selected, the reproduction is performed according to ORG_PGCI, and when the reproduction is performed for each program, the reproduction is performed according to UD_PGC of the number corresponding to the program to be reproduced.

  (6) Perform processing at the start of playback.

  (7) Initialization of each decoder is performed (ST413).

  (8) Cell playback processing (described later) is performed (ST414), and it is checked whether or not playback has been completed (ST415). If the playback has been completed, an error check is performed. If an error has occurred, the fact is displayed ( If no error is found in ST422, a reproduction end process is performed (ST423), and this operation ends.

  (9) The next cell is determined from the PGCI (ST417), and it is checked whether the setting of the decoder has been changed (ST418). If the setting has been changed, the decoder is set to the next sequence end code (at the end of VOB). Are set in the decoder such that the setting of is changed (ST419).

  (10) It is checked whether or not the setting (resolution, etc.) in the video decoder unit has been changed. If the setting has been changed, the setting change to the decoder is performed after the last sequence end code of CELL (VOB). The changed attribute to the decoder as described above.

  The cell reproduction process will be described with reference to FIGS.

  (1) The start file pointer (logical block address) and end address file pointer (logical block address) of the cell are determined by PGCI and TMAPI, the start FP of the cell is substituted as the read FP, and the final file pointer is set to the remaining cell length. Set the value obtained by subtracting the start file pointer.

  (2) From the SOBI to be read, it is determined whether the source of the stream to be reproduced is from the STB unit 56 or a terrestrial digital tuner. In the case of the STB unit 56, a playback start command is sent to the STB unit 56, and when playback preparation is completed, a TS packet transmission command, a program number to be played back, and a start APAT are newly received from the STB unit 56, According to the instruction, the TS packet is transmitted to the STB unit 56 according to the APAT. Further, the video mixing unit is set to display the video signal from STB unit 56 (ST501).

  Also, in the case of terrestrial digital, it is set not to send to STB section 56 but to perform decoding processing inside the decoder section (ST501). At this time, a PID is set for the TS packet to be reproduced, and a decoding target is determined. Here, the PID is read and set from the PMT in the SOBI. Further, in the case of SOB of a plurality of streams, PID is determined using the program number in C_PBI (ST503).

  (3) A read process during playback is executed, and a read address and a read size are determined from a start file pointer.

  (4) The read unit size to be read is compared with the remaining cell length (ST504). If the remaining cell length is large, a value obtained by subtracting the read unit size from the remaining cell length to the remaining cell length is set (ST505). If smaller, the read length is set to the remaining cell length, and the remaining cell length is set to 0 (ST506).

  (5) Set the read length to the length of the read unit.

  (6) A read address, a read length, and a read command are set in the drive unit (ST507). In the decoder unit 30, the read-out pack data is received and packetized by the separation unit 31, and the video packet data (MPEG video data) is transferred to the video decoding unit according to the stream ID and the substream ID, and the audio packet data is converted to the audio data. Transfer to the decoding unit, the sub-picture packet data to the SP decoding unit, and the TS packet to the STB unit 56 (ST508). When the source is terrestrial digital, the TS packet is converted into an element stream, sent to each decoder via an internal bus, and subjected to decoding processing. The TS packet data sent to the STB unit 56 is reproduced by the STB unit 56, and the video data is converted into a TV signal via the V mixing unit and displayed on the TV. The audio signal is also sent to the D / A unit and is converted into audio.

  (7) During playback, the contents of the STC are displayed as the playback time (ST509). However, if the STB unit 56 can display the reproduction time based on the PTS in the video data, it is used.

  (8) It is checked whether or not the transfer is completed (ST510). If the transfer is not started, the process moves to ST507.

  (9) A value obtained by adding the read FP and the read length set in (5) is substituted for the read FP.

  (10) It is checked whether or not the transfer is completed. If the transfer is completed, the remaining cell length is checked. If the remaining cell length is not "00", the process proceeds to (2). finish.

  (11) If the transfer is not completed, the key input is checked (ST512). If the special reproduction is performed, the direction is set (ST513, ST514), and the read FP is calculated using TMAPI. Then, the reading process at the time of the special reproduction is performed, and the process ends.

For the purpose FP of the special reproduction, the FP is obtained from TMAPI so as to skip a certain time. At this time, a method is also conceivable in which the FP is obtained by skipping a certain number of SOBUs instead of a certain time. At this time, when the operation is performed to the end of the cell, the next cell information is read out by the PGCI, a TMAPI is selected from the SOB number used by the cell (1 TMAPI is present in one SOB), and the read FP is similarly read. Ask. When there are no more cells, the process ends. (In this example, the speed is 10 times.)
Here, the format of the present invention based on the management data of the RTR_DVD is as follows.

  A program number (or PMT, PID) of a program is provided in C_PBI.

  Record PAT and PMT in SOBI. However, if it is not in the stream, a PMT is created and recorded from the default value of the broadcasting station. When recording starts from a place where there is no PAT or PMT at the start of recording, the nearest PAT or PMT after the start of recording is stored.

  If there is no PMT at the head of the SOBU at the head of the SOB, a flag indicating this is recorded. Every 10 SOBU information is stored as Time_Entry.

  The average arrival time of each element of TMAP is provided in TMAPI.

  Further, for simultaneous recording of a plurality of streams, a flag indicating a plurality of streams is recorded in SOBI, and PMT information corresponding to the number of recorded streams is recorded.

  As described above, a fine-grained control operation corresponding to digital broadcasting can be realized. According to the present invention, it is possible to record the support information, thereby obtaining an effect that more detailed data management can be performed.

  The information storage medium and the information recording device of the present embodiment described above are summarized below.

  (1) The information recording medium includes a management area for recording management information and a data area for recording content data, and the content data recorded in the data area includes a plurality of object data. , Each object data includes a plurality of data units, each data unit includes a plurality of packs, each pack includes a plurality of packets, and the management information recorded in the management area is The information includes program chain information for managing the reproduction order of the included data, the program chain information includes cell information, and the cell information includes information for specifying a reproduction target.

  (2) In the information storage medium according to the above (1), the information for specifying the reproduction target is a program number.

  (3) The information storage medium according to (1), wherein the management information includes a first table and a second table, and the first table is a packet of a packet including the second table. The second table includes identification information, and the second table includes identification information of the packet, and the information identifying the reproduction target is identification information of a packet including the second table.

  (4) The information storage medium according to (1), wherein the management information includes object data management information for managing the object data, and the object data management information includes a first table and a second table. A first table including identification information of the packet including the second table, and the second table including identification information of the packet.

  (5) The information storage medium according to (4), wherein the object data management information includes the second table generated based on default identification information included in the content data.

  (6) The information storage medium according to (4), wherein the object data management information is information indicating whether a first table or a second table exists at the beginning of the data unit at the beginning. including.

  (7) The information storage medium according to (1), wherein the management information includes object data management information for managing the object data, and the object data management information relates to the integer number of the data units. Includes time entry information.

  (8) An information recording apparatus for recording information on an information storage medium including a management area and a data area, comprising: recording means for recording management information in the management area and recording object data in the data area; Reading means for reading object data management information for managing the object data included in the management information, and determining means for determining identification information of object data to be reproduced based on the object data management information read by the reading means. Prepare.

(9) The management information recorded for the management area includes object data management information for managing the object data, the object data management information includes a first table and a second table, A table including identification information of the packet including the second table, wherein the second table includes identification information of the packet;
An information recording apparatus that records information on an information storage medium including a management area and a data area, a recording unit that records the management information in the management area, and records object data in the data area, And a determination unit for determining the identification information of the second table to be reproduced based on the management information read by the reading unit.

(10) The management information recorded in the management area includes object data management information for managing the object data, the object data management information includes a first table and a second table, and the first A table including identification information of the packet including the second table, wherein the second table includes identification information of the packet;
An information recording apparatus that records information on an information storage medium including a management area and a data area, a recording unit that records management information on the management area and an object data on the data area, Reading means for reading, first determining means for determining identification information of the second table to be reproduced based on the management information read by the reading means, and identification information determined by the first determining means Second determining means for determining the identification information of each object data based on the information.

  (11) An information recording apparatus for recording information on an information storage medium including a management area and a data area, comprising: recording means for recording management information on the management area and recording object data on the data area; Reading means for reading object data management information for managing the object data included in the management information; and searching means for performing a time search based on the arrival time of a packet based on the object data management information read by the reading means. ing.

  (12) An information recording apparatus for recording information on an information storage medium including a management area and a data area, comprising: recording means for recording management information on the management area and recording stream data on the data area; The information processing apparatus includes a determination unit that determines the type of the information recording medium, and a control unit that permits recording of a plurality of stream data based on the determination result of the determination unit.

  It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified in an implementation stage without departing from the spirit of the invention. In addition, the embodiments may be implemented in appropriate combinations as much as possible, in which case the combined effects can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriate combinations of a plurality of disclosed constituent elements. For example, even if some components are deleted from all the components shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effects described in the column of the effect of the invention can be solved. Is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.

FIG. 2 is a diagram illustrating an example of a schematic configuration of an information recording / reproducing device. FIG. 3 is a diagram illustrating an example of a data structure of SOBS. FIG. 3 is a diagram illustrating an example of a data structure of an information storage medium, particularly illustrating an example of data included in PGC_GI. It is a figure showing an example of support information contained in PGC_GI. FIG. 4 is a diagram illustrating an example of data included in C_PBI. FIG. 11 is a diagram illustrating an example of data included in SOBI_GI. FIG. 4 is a diagram illustrating an example of data included in SOBU_ENTRY. FIG. 4 is a diagram illustrating an example of data included in TMAPI. FIG. 4 is a diagram illustrating an example of SOBU segmentation. FIG. 4 is a diagram illustrating an example of data included in a PAT. FIG. 3 is a diagram illustrating an example of data included in a PMT. 9 is a flowchart illustrating a recording process 1; 9 is a flowchart showing a recording process 2; It is a flowchart which shows an interruption process. It is a flowchart which shows the monitoring process of a remaining capacity. 9 is a flowchart showing an entire reproduction process 1; 13 is a flowchart showing a second reproduction process. 13 is a flowchart showing a cell reproduction process 1; 11 is a flowchart showing a cell reproduction process 2; It is a flowchart which shows a pre-recording process.

Explanation of reference numerals

10 MPU unit 20 Encoder unit 30 Decoder unit 50 Disk drive unit 51 D-PRO unit 52 Temporary storage unit 53 A / V input unit 54 Terrestrial digital tuner unit 55 Satellite antenna 56 STB unit 57 STC (System Time Counter) unit 58 V mixing unit 59 Frame memory unit 60 D / A unit 61 TV
62 speaker 63 key input unit 64 display unit

Claims (2)

A management area for recording management information;
A data area for recording content data,
With
The content data recorded in the data area includes a plurality of object data,
Each object data includes a plurality of data units,
Each data unit contains multiple packs,
Each pack contains multiple packets,
The management information recorded in the management area includes program chain information for managing a reproduction order of data included in the object data,
The program chain information includes cell information,
The cell information includes information for identifying a reproduction target,
The information for specifying the reproduction target is a program number.
An information storage medium characterized by the above-mentioned. An information recording device that records information on an information storage medium including a management area and a data area,
First recording means for recording management information in the management area;
Second recording means for recording content data in the data area;
With
The content data recorded in the data area includes a plurality of object data,
Each object data includes a plurality of data units,
Each data unit contains multiple packs,
Each pack contains multiple packets,
The management information recorded in the management area includes program chain information for managing a reproduction order of data included in the object data,
The program chain information includes cell information,
The cell information includes information for identifying a reproduction target,
The information for specifying the reproduction target is a program number.
An information recording device, characterized in that:

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