KR100633664B1 - Apparatus and method for recording a multichannel stream and, medium thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-channel stream recording apparatus and method, and a recording medium according to the present invention, comprising a high definition television (HD-TV) or a standard definition television (SD-TV) in a recording medium such as a high density DVD (HD-DVD). ) Recording media such as high-density DVDs by partitioning and recording a multichannel stream such as broadcast data into one record set (HOB), and cooperatively generating and managing navigation information corresponding to the record set. It is a very useful invention to be able to select and reproduce any one channel stream among multi-channel streams recorded in one recording set in the following.

High Density DVD (HD-DVD), Digital Broadcast Data, Multi-Channel Streams, Record Aggregates, Navigation Information

Description

BACKGROUND OF THE INVENTION 1. Apparatus and method for recording a multichannel stream and, medium thereof

1 shows a configuration of a multi-channel stream recording apparatus according to the present invention,

2 is a diagram illustrating a process of separating a multi-channel stream for each channel according to the present invention,

FIG. 3 is a diagram showing a recording set partitioned and recorded by the multi-channel stream recording method according to the first embodiment of the present invention, and navigation information corresponding thereto.

4 to 7 show navigation information that is jointly generated by a multi-channel stream recording method according to the present invention,

FIG. 8 is a diagram showing a recording set partitioned and recorded by the multi-channel stream recording method according to the second embodiment of the present invention, and navigation information corresponding thereto.

9 is a diagram showing a recording set partitioned and recorded by a multi-channel stream recording method according to a third embodiment of the present invention, and navigation information corresponding thereto.

10 is a diagram showing a recording set partitioned and recorded by the multi-channel stream recording method according to the fourth embodiment of the present invention, and navigation information corresponding thereto.

11 is a diagram showing a recording set partitioned and recorded by a multi-channel stream recording method according to a fifth embodiment of the present invention, and navigation information corresponding thereto.

Fig. 12 is a diagram showing a recording set that is partitioned and recorded by the multi-channel stream recording method according to the sixth embodiment of the present invention, and navigation information corresponding thereto.

※ Explanation of the symbols for the main parts of the drawing

10: tuner unit 11: stream selection unit

12: multi-channel stream recording unit 13: optical pickup

14: control unit 100: high-density DVD

The present invention provides a multichannel stream such as HD-TV (High Definition TV) or SD-TV (Standard Definition TV) broadcast data on a recording medium such as a high-density DVD (HD-DVD). A multi-channel stream recording apparatus and method for recording and storing ), and a recording medium according thereto.

In recent years, with the development of digital technologies such as digital image compression and digital modulation/demodulation, standardization for digital television broadcasting is advancing at a rapid pace, and MPEG-2 (Moving Picture) is also used in existing terrestrial, satellite, and cable broadcasting. Experts Group-2).

Meanwhile, the digital broadcasting can provide a high-definition broadcasting service than an analog broadcasting signal service with the development of digital video/audio compression technology and digital transmission technology, and can increase interoperability with digital communication media and digital storage media. There is an advantage in that the digital broadcasting is mostly transmitted in the form of a transport stream encoded based on the MPEG-2 scheme.

Accordingly, an optical disk device, for example, a DVD recorder (DVD-R) for receiving and storing the transport stream encoded based on the MPEG-2 method as described above, and recording and storing it in a digital multi-functional disk, a DVD. It is expected to be developed and widely commercialized.

Meanwhile, in the DVD-R, the transport stream of the digital broadcasting is divided into recording units (VOBUs) having a predetermined recording size, for example, a recording size of 32 sectors, and the plurality of The recording units of are divided and managed as a single recording set (VOB: Video Object) to be reproduced with temporal continuity.

Accordingly, when the transport stream of the digital broadcast is continuously recorded on a DVD, the DVD includes one recording set (VOB) to be reproduced with temporal continuity and a plurality of recording units (VOBU) included in the recording set. ) Are recorded in divisions, and navigation information for searching and reproducing the recording group and the recording unit is generated and recorded, thereby enabling random access to a specific recording group or recording unit.

On the other hand, in recent years, a high-density DVD (HD-DVD), which has significantly improved data recording capacity compared to a general DVD, and an optical disk device capable of recording and storing digital data streams on the high-density DVD, for example, a high-density DVD recorder (HD). -VDR) standardization work is being discussed among related companies. It receives multi-channel streams multiplexed and transmitted on RF channels such as HD-TV or SD-TV digital broadcasting, and is used in high-density DVD (HD-DVD). A specific solution for storing records has not yet been prepared.

Accordingly, the present invention was created in view of the above circumstances, and when recording a multi-channel stream on a recording medium, each digital channel stream can be recorded in a form that can be distinguished at the time of reproduction and/or each digital channel stream can be distinguished. It is an object of the present invention to provide an apparatus and method for generating and recording possible management information, and a recording medium in which a multi-channel stream is recorded accordingly.

In order to achieve the above object, a multi-channel stream recording method according to the present invention includes: a first step of recording a plurality of multiplexed channel streams into a single recording set; A second step of generating and recording one program information corresponding to the recording set and a plurality of cell information respectively corresponding to the plurality of channel streams; And generating a plurality of search information corresponding to each of the plurality of channel streams and recording the plurality of cell information in association, respectively,

The method for recording a multi-channel stream according to the present invention comprises: a first step of partitioning and recording a plurality of multiplexed channel streams into one recording set; A second step of generating and recording one program information corresponding to the recording set and one cell information corresponding to the plurality of channel streams; And generating a plurality of search information corresponding to each of the plurality of channel streams, and linking and recording the one cell information,

The method for recording a multi-channel stream according to the present invention comprises: a first step of partitioning and recording a plurality of multiplexed channel streams into one recording set; A second step of generating and recording program information corresponding to the recording set to correspond to the plurality of channel streams, generating information of a plurality of cells corresponding to the plurality of channel streams, and recording the program information in association with the program information; And generating a plurality of search information corresponding to each of the plurality of channel streams, and linking and recording the plurality of cell information,

The method for recording a multi-channel stream according to the present invention comprises: a first step of partitioning and recording a plurality of multiplexed channel streams into one recording set; A second step of generating and recording one program information corresponding to the recording set, a plurality of cell information corresponding to each of the plurality of channel streams, and another cell information corresponding to all of the plurality of channel streams; And generating a plurality of search information corresponding to each of the plurality of channel streams and another search information corresponding to all of the plurality of channel streams, and recording the cell information in association with each other. And

The method for recording a multi-channel stream according to the present invention comprises: a first step of partitioning and recording a plurality of multiplexed channel streams into one recording set; A second step of generating and recording one program information corresponding to the recording set and one cell information corresponding to the plurality of channel streams; And generating a plurality of search information corresponding to each of the plurality of channel streams and another search information corresponding to all of the plurality of channel streams, and recording the information in association with the one cell information. And

The method for recording a multi-channel stream according to the present invention comprises: a first step of partitioning and recording a plurality of multiplexed channel streams into one recording set; Program information corresponding to each of the plurality of channel streams, and other program information corresponding to all of the plurality of channel streams are generated and recorded, and information of a plurality of cells corresponding to each of the plurality of channel streams, and the plurality of A second step of generating another cell information corresponding to the entire channel stream and recording the information in association with the program information; And generating a plurality of search information corresponding to each of the plurality of channel streams and another search information corresponding to all of the plurality of channel streams, and recording the plurality of cell information in association with each other. Characterized by,

The multi-channel stream recording apparatus according to the present invention comprises: a tuning means for selecting and outputting one or a plurality of broadcasting channels by synchronously receiving digital broadcasting; Selecting means for selecting and outputting a desired multi-channel stream from among a plurality of channel streams included in the selected and output broadcast channel; And recording means for partitioning and recording the plurality of channel streams that are selectively outputted into one recording set, and generating and recording navigation information corresponding thereto,

A recording medium according to the present invention comprises a first area in which a plurality of channel streams are recorded, and a second area in which navigation information for controlling reproduction and control of the plurality of channel streams is recorded. Channel stream. It is characterized in that the recording is divided into one recording set, and navigation information corresponding to the plurality of channel streams is linked and recorded in the one recording set.

Hereinafter, a multi-channel stream recording apparatus and method according to the present invention, and a preferred embodiment of a recording medium according to the same will be described in detail with reference to the accompanying drawings.

First, FIG. 1 shows a configuration of a multi-channel stream recording apparatus according to the present invention. In the multi-channel stream recording apparatus, for example, a high-density DVD recorder (HD-VDR), an HD-TV or SD-TV and A tuner unit 10 for selecting and outputting one or more desired RF channels by synchronously receiving the same digital broadcast; A stream selection unit 11 for selecting and outputting a desired plurality of channel streams from among a plurality of digital transport streams included in the selected RF channel; A multi-channel stream recording unit (12) for separating and recording the plurality of channel streams selected and output for each channel stream into different recording aggregates (HOBs), and generating and recording navigation information corresponding thereto; An optical pickup (13) for recording the multi-channel stream and navigation information output from the multi-channel stream recording unit (12) on a recording medium such as a high-density DVD (HD-DVD) 100 in a pit shape; And, according to the user's request, a control unit 14 for controlling the operation of the component means is included.

Accordingly, one or a plurality of RF channels among multiple channels of digital broadcasting such as HD-TV or SD-TV that are tuned to and received by the tuner unit 10 are selected and output, and the stream selection unit 11 selects the selection. A plurality of different broadcast programs multiplexed on one or a plurality of output RF channels, or selected and multiplexed from the respective RF channels, for example, two different multi-channel streams, as shown in FIG. The two multi-channel streams are selected and output, and the two multi-channel streams are demuxed by the multi-channel stream recording unit 12 to be separated into a first channel stream and a second channel stream to be processed for recording signals.

On the other hand, the multi-channel stream recording unit 12 detects and confirms different packet IDs (PID: Packet IDs) recorded in a transport packet (TP) of the multi-channel stream, and identifies the multi-channel stream, The first channel stream and the second channel stream can be classified and recognized, and the first channel stream and the second channel stream can be classified and recognized in I-picture units, as described above. A detailed description will be given of a method of partitioning and recording a multi-channel stream multiplexed by a plurality of different broadcast programs into a single recording set (HOB) and generating and recording navigation information corresponding thereto.

Fig. 3 shows a recording set that is partitioned and recorded by the multi-channel stream recording method according to the first embodiment of the present invention, and navigation information corresponding thereto. In the multi-channel stream recording unit 12, the stream selection Multi-channel streams selected and output by the unit 11, for example, a first channel stream and a second channel stream, which are different broadcast programs, are divided and recorded into one first recording set (HOB #1).

Meanwhile, in the multi-channel stream recording unit 12, program chain information (PGCI) for linking and reproducing the first recording set (HOB #1) and another second recording set (HOB #2), etc. In this case, in the program chain information (PGCI), one program divided by the first recording group (HOB #1), that is, the first and second channel streams, is multi-recorded. First cell information (Cell #1) and second cell information (Cell #2), which are reproduction control information respectively corresponding to the first program (PG #1), are recorded.

In addition, in the first recording set information (HOBI #1: HOB Information #1) corresponding to the first recording set (HOB #1), a first channel mapping corresponding to the first cell information and the second cell information, respectively. A list (MAPL for Channel 1) and a second channel mapping list (MAPL for Channel 2) are generated and recorded.

Accordingly, as shown in Fig. 3, the multi-channel stream continuously recorded by one recording operation is divided into one recording set, and each cell information linked to one program corresponding to the recording set is In addition, since each channel stream is managed, and each mapping list is correspondingly generated for each cell information, a mapping list as many as the number of the channel streams is required in one recording set in which the multi-channel stream is partitioned and recorded.

In addition, the program for managing the multi-channel stream cannot simultaneously include cell information corresponding to another recording set in which a single channel stream is partitioned, and the navigation information generated and recorded as described above cannot be included in detail. Explained as follows.

4 to 7 show navigation information generated and recorded by the multi-channel stream recording method according to the first embodiment of the present invention. The program chain information (PGCI) includes program chain general information (PGC_GI) and , A plurality of program information (PGI #1 to #n), and a plurality of cell information search pointers (CI_SRP #1 to #n) and cell information (CI #1 to #n) are recorded, the program information ( In the PGI), as shown in Fig. 4, program type information (PG_TY) and cell number information (C_Ns) are included and recorded.

On the other hand, the program type information (PG_TY), as shown in Fig. 5, can be recorded in a recording size of 8 bits, 1 bit for indicating whether the program (PG) can be erased (Erase) A protect flag (Protect) and 3-bit channel number information (Channel_Ns) for indicating the number of broadcast channels corresponding to the corresponding program are recorded. For example, as shown in FIG. 3, two channel streams are recorded. In the case of the multi-recorded first program (PG #1), '010b' is recorded in the 3-bit channel number information (Channel_Ns), and the two channel streams are multi-recorded in the cell number information (C_Ns). The number of generated two cells corresponding to the first program PG #1 is recorded.

In the cell information (CI), as shown in FIG. 4, cell type information (C_TY), recording aggregate search pointer number information (HOBI_SRPN), playback time map number information (PTMAPN: Presentation MAP Number), and cell start. Reproduction time information (C_V_S_PTM) and end-of-cell reproduction time information (C_V_E_PTM) are recorded, and the cell type information (C_TY) may be recorded in a recording size of 8 bits, as shown in FIG. 2-bit cell type identification information (C_TY1) for indicating whether the cell corresponds to a movie cell, etc., and 3-bit cell channel number information for indicating a broadcast channel number corresponding to the corresponding cell ( C_CH_N) is included and recorded. For example, as shown in FIG. 3, when two channel streams are first cell information and second cell information corresponding to a multi-recorded first program (PG #1), In the 2-bit cell type identification information (C_TY1), '00b' for indicating that each cell is a video cell is recorded, and in the 3-bit cell channel number information (C_CH_N), corresponding to the first and second channel streams The channel number is recorded.

On the other hand, as shown in Fig. 7, the record set general information (HOBI_GI) in the record set information (HOBI) generated and recorded in association with the record set search pointer number information (HOBI_SRPN) recorded included in the cell information (CI). Wow, a plurality of reproduction time map search pointers (PTMAP_SRP #1 to #n), and a plurality of reproduction time map information (PTMAPI #1 to #n) are recorded including, in the recording aggregate general information (HOBI_GI), Record set type information (HOB_TY), record set record time information (HOB_REC_TM), record set start and play time information (HOB_V_S_PTM), record set end play time information (HOB_V_E_PTM), play time map number information (PTMAP_Ns) and i-th play Time map start address information (PTMAP_SA #i) is included and recorded.

In addition, in the playback time map information (PTMAPI), playback time map general information (PTMAP_GI) and a plurality of recording unit entries (HOBU_ENT #1 to #n) are recorded. Video packet ID (V_PID) and audio packet ID (A_PID) corresponding to the playback time map information, the number of recording aggregate stream information (HOBI_STIN), the number of recording unit entries (HOBU_ENT_Ns), and start playback time information of the corresponding playback time map information (PTMAP_S_PTM) and end time information (PTMAP_E_PTM) are included and recorded.

Therefore, since the program information (PGI) and cell information (CI) managed included in the program chain information (PGCI), and the playback time map information (PTMAPI) managed included in the recording aggregate information (HOBI) are managed in association with each other, As shown in Fig. 3, in the case of reproducing a multi-channel stream program (PG #1) partitioned by one recording set (HOB #1), each cell generated corresponding to the program (PG #1) By searching for (Cell #1, Cell #2) information and reproduction time map information (PTMAPI) linked to the cell information, it is possible to selectively read and reproduce the first channel stream or the second channel stream.

8 shows navigation information generated and recorded by the multi-channel stream recording method according to the second embodiment of the present invention. As described above, in the multi-channel stream recording unit 12, the stream selection unit ( The first channel stream and the second channel stream, which are different broadcast programs selected and output by 11), are divided and recorded into one first recording set (HOB #1), and the first recording set (HOB #1) and It is possible to generate and record program chain information (PGCI) for linking and reproducing another second recording set (HOB #2) or the like.

On the other hand, in the program chain information (PGCI), one program corresponding to the first recording set (HOB #1), that is, a first program (PG #1) in which the first and second channel streams are multi-recorded, and First cell information (Cell #1), which is reproduction control information corresponding to the first program, is included and recorded, and in the first recording set information (HOBI #1) corresponding to the first recording set (HOB #1), A first channel mapping list (MAPL for Channel 1) and a second channel mapping list (MAPL for Channel 2) respectively corresponding to the first cell information are generated and recorded.

Therefore, the multi-channel stream continuously recorded by one recording operation is divided into one recording set (HOB #1), and one cell linked to one program (PG #1) corresponding to the recording set. In the information (Cell #1), first and second mapping lists for the first channel stream and the second channel stream are correspondingly generated.

Meanwhile, in the program type information (PG_TY) recorded in the program information (PGI) described above with reference to FIGS. 4 to 7, 3 for indicating that two channel streams are multi-recorded in one program. '010b', which is the number of bits of channel information (Channel_Ns), is recorded, and in the cell number information (C_Ns), one cell generated corresponding to the first program (PG #1) in which the two channel streams are multi-recorded The number is recorded.

In addition, in the cell type information (C_TY) included in the cell information (Cell #1) and recorded, 2-bit cell type identification information ( C_TY1) and 3-bit cell channel number information (C_CH_N) for indicating a broadcast channel number corresponding to the corresponding cell are recorded, so that, as described above, program information managed by the program chain information (PGCI) ( PGI), cell information (CI), and reproduction time map information (PTMAPI) included in the recording aggregate information (HOBI) and managed in association with each other.

Therefore, in the case of reproducing the multi-channel stream program (PG #1) partitioned by one recording group (HOB #1) as described above, one cell (Cell #1) generated corresponding to the program (PG #1) is reproduced. 1) By searching for information and reproduction time map information (PTMAPI) recorded in association with the cell information, it is possible to selectively read and reproduce the first channel stream or the second channel stream.

9 shows navigation information generated and recorded by the multi-channel stream recording method according to the third embodiment of the present invention. As described above, in the multi-channel stream recording unit 12, the stream selection unit ( The first channel stream and the second channel stream, which are different broadcast programs selected and output by 11), are divided and recorded into one first recording set (HOB #1), and the first recording set (HOB #1) and It is possible to generate and record program chain information (PGCI) for linking and reproducing another second recording set (HOB #2) or the like.

Meanwhile, in the program chain information (PGCI), first and second programs corresponding to the first recording set (HOB #1), that is, first programs (PG #1) corresponding to the first and second channel streams, respectively. ) And the second program (PG #2), and the first cell information (Cell #1) and the second cell information (Cell #2), which are reproduction control information corresponding to the first program and the second program, respectively. And, in the first recording set information (HOBI #1) corresponding to the first recording set (HOB #1), a first channel mapping list (MAPL for Channel) corresponding to the first cell information and the second cell information, respectively. 1) and a second channel mapping list (MAPL for Channel 2) are generated and recorded.

Accordingly, the multi-channel stream continuously recorded by one recording operation is divided into one first recording set (HOB #1), and first and second programs (PG #) respectively corresponding to the first recording set are recorded. In the first cell information (Cell #1) and the second cell information (Cell #2) respectively linked to 1 and PG #2), first and second mapping lists for the first channel stream and the second channel stream, respectively Is created correspondingly.

On the other hand, program information (PGI) corresponding to each of the first program (PG #1) and the second program (PG #2) includes program type information, respectively, and the program type information (PG_TY) includes: Each of the 1 program and the second program includes '001b', which is 3-bit channel number information (Channel_Ns) for indicating that 1 channel stream is recorded, respectively, and the cell number information (C_Ns) includes 1 The number of cells generated corresponding to the first program (PG #1) and the second program (PG #2) in which the channel stream is recorded is recorded.

In addition, the cell type information (C_TY) included in the first and second cell information (Cell #1, Cell #2) indicates whether the corresponding cell corresponds to a movie cell, etc. 2 bits of cell type identification information (C_TY1) for the corresponding cell and 3 bits of cell channel number information (C_CH_N) for indicating a broadcast channel number corresponding to the corresponding cell are recorded. As described above, the program chain information ( Program information (PGI) and cell information (CI) included in PGCI), and reproduction time map information (PTMAPI) included and managed in the recording aggregate information (HOBI) are managed in association with each other.

Therefore, in the case of reproducing multi-channel stream programs (PG #1, PG #2) divided into one recording group (HOB #1) as described above, each program (PG #1, PG #2) is By searching and confirming the corresponding generated cell (Cell #1, Cell #2) information and playback time map information (PTMAPI) recorded in association with the cell information, the first channel stream or the second channel stream can be selectively read and reproduced. There will be.

10 shows navigation information generated and recorded by the multi-channel stream recording method according to the fourth embodiment of the present invention. As described above, in the multi-channel stream recording unit 12, the stream selection unit ( The first channel stream and the second channel stream, which are different broadcast programs selected and output by 11), are divided and recorded into one first recording set (HOB #1), and the first recording set (HOB #1) and It is possible to generate and record program chain information (PGCI) for linking and reproducing another second recording set (HOB #2) or the like.

Meanwhile, in the program chain information (PGCI), a first program corresponding to the first recording set (HOB #1), that is, a first program (PG #1) corresponding to each of the first and second channel streams, and , The first cell information (Cell #1), the second cell information (Cell #2), and the third cell information (Cell #3), which are reproduction control information corresponding to the first program, are recorded. Cell information (Cell #1) is generated corresponding to the first and second streams, and the second cell information (CEll #2) is the first channel stream, and the third cell information (CEll #3) May be generated corresponding to the second channel stream, and in the first recording set information (HOBI #1) corresponding to the first recording set (HOB #1), the first cell information and the second cell information, In addition, first and second channel mapping lists (MAPL for Channel 1 & 2), a first channel mapping list (MAPL for Channel 1), and a second channel mapping list (MAPL for Channel 2) respectively corresponding to the third cell information. Is created and recorded.

Accordingly, the multi-channel stream continuously recorded by one recording operation is divided into one first recording set (HOB #1), and is linked to the first and second channels respectively corresponding to the first recording set. In the first, second, and third cell information (Cell #1, #2, #3), a mapping list for a first and a second channel stream, a mapping list for a first channel stream, and a second channel, respectively. Mapping lists for streams are generated correspondingly.

Meanwhile, in the program information (PGI) corresponding to the first program (PG #1), the program type information is recorded, and in the program type information (PG_TY), two channel streams of the first program are recorded, respectively. '010b', which is 3 bits of channel number information (Channel_Ns), is recorded to indicate that it has been recorded, and in the cell number information (C_Ns), the number of three cells generated corresponding to the first program (PG #1) is recorded. do.

In addition, in the cell type information (C_TY) included in the first, second, and third cell information (Cell #1, #2, #3), a corresponding cell is a movie cell or the like. Since 2 bits of cell type identification information (C_TY1) for indicating whether the corresponding cell is applicable and 3 bits of cell channel number information (C_CH_N) for indicating a broadcast channel number corresponding to the corresponding cell are recorded, as described above, Program information (PGI) and cell information (CI) included in the program chain information (PGCI) and managed reproduction time map information (PTMAPI) included in the recording aggregate information (HOBI) are managed in association with each other.

Therefore, in the case of reproducing the multi-channel stream program (PG #1) divided into one recording group (HOB #1) as described above, three cells (Cell) generated corresponding to the program (PG #1) are reproduced. #1, Cell #2, Cell #3) information and reproduction time map information (PTMAPI) linked to the cell information are searched and confirmed, and the first channel stream or the second channel stream can be read and reproduced.

11 shows navigation information generated and recorded by the multi-channel stream recording method according to the fifth embodiment of the present invention. As described above, in the multi-channel stream recording unit 12, the stream selection unit ( The first channel stream and the second channel stream, which are different broadcast programs selected and output by 11), are divided and recorded into one first recording set (HOB #1), and the first recording set (HOB #1) and It is possible to generate and record program chain information (PGCI) for linking and reproducing another second recording set (HOB #2) or the like.

Meanwhile, in the program chain information (PGCI), a first program corresponding to the first recording set (HOB #1), that is, a first program (PG #1) corresponding to each of the first and second channel streams, and , First cell information (Cell #1), which is reproduction control information corresponding to a first program, is included and recorded, wherein the first cell information (Cell #1) is generated corresponding to the first and second streams, In the first recording set information (HOBI #1), first and second channel mapping lists (MAPL for Channel 1 & 2) and a first channel mapping list (MAPL for Channel 1) corresponding to the first cell information, In addition, a second channel mapping list (MAPL for Channel 2) is generated and recorded.

Therefore, the multi-channel stream continuously recorded by one recording operation is divided into one first recording set (HOB #1), and is divided into a first program (PG #1) corresponding to the first recording set. In the associated first cell information (Cell #1), a mapping list for the first and second channel streams, a mapping list for the first channel stream, and a mapping list for the second channel stream are correspondingly generated.

Meanwhile, in the program information (PGI) corresponding to the first program (PG #1), the program type information is recorded, and in the program type information (PG_TY), two channel streams of the first program are recorded, respectively. '010b', which is 3 bits of channel number information (Channel_Ns), is recorded to indicate that it has been recorded, and in the cell number information (C_Ns), the number of one cell generated corresponding to the first program (PG #1) is recorded. do.

And, in the cell type information (C_TY) included in the first cell information (Cell #1) and recorded, a 2-bit cell type identification for indicating whether the corresponding cell corresponds to a movie cell or the like. Since information (C_TY1) and 3-bit cell channel number information (C_CH_N) for indicating a broadcast channel number corresponding to the cell are included and recorded, as described above, a managed program included in the program chain information (PGCI) Information (PGI), cell information (CI), and reproduction time map information (PTMAPI) included in the recording aggregate information (HOBI) are managed in association with each other.

Therefore, in the case of reproducing the multi-channel stream program (PG #1) partitioned by one recording set (HOB #1) as described above, one cell (Cell #1) generated corresponding to the program (PG #1) is reproduced. 1) It is possible to read and reproduce the first channel stream or the second channel stream by searching and confirming the information and reproduction time map information (PTMAPI) recorded in association with the cell information.

12 shows navigation information generated and recorded by the multi-channel stream recording method according to the sixth embodiment of the present invention. As described above, in the multi-channel stream recording unit 12, the stream selection unit ( The first channel stream and the second channel stream, which are different broadcast programs selected and output by 11), are divided and recorded into one first recording set (HOB #1), and the first recording set (HOB #1) and It is possible to generate and record program chain information (PGCI) for linking and reproducing another second recording set (HOB #2) or the like.

Meanwhile, in the program chain information (PGCI), a first program corresponding to the first recording set (HOB #1), that is, a first program (PG #1) corresponding to each of the first and second channel streams, and A second program (PG #2) corresponding to the first channel stream, and a third program (PG #3) corresponding to the second channel stream are recorded. 1 cell information (Cell #1), second cell information (Cell #2) corresponding to the second program, and third cell information (Cell #3) corresponding to the third program are recorded. In the first recording aggregate information (HOBI #1) corresponding to the recording aggregate (HOB #1), first and second channel mapping lists corresponding to the first cell information, the second cell information, and the third cell information, respectively. (MAPL for Channel 1 & 2), a first channel mapping list (MAPL for Channel 1), and a second channel mapping list (MAPL for Channel 2) are generated and recorded.

Accordingly, the multi-channel stream continuously recorded by one recording operation is divided into one first recording set (HOB #1), and first, second and third programs corresponding to the first recording set, respectively. In the first, second, and third cell information (Cell #1, #2, #3) linked to (PG #1, #2, #3), respectively, mapping lists for the first and second channel streams, respectively And, a mapping list for a first channel stream and a mapping list for a second channel stream are correspondingly generated.

Meanwhile, in the program information (PGI) corresponding to the first program (PG #1), the program type information is recorded, and in the program type information (PG_TY), two channel streams of the first program are recorded, respectively. '010b', which is 3 bits of channel number information (Channel_Ns), is recorded to indicate that it has been recorded, and in the cell number information (C_Ns), the number of one cell generated corresponding to the first program (PG #1) is recorded. do.

In addition, in the program type information (PG_TY) of the program information (PGI) corresponding to the second and third programs (PG #2, PG #3), respectively, one channel stream is recorded in the second and third programs. '001b', which is 3 bits of channel number information (Channel_Ns) to indicate that it has been recorded, is recorded, and in the cell number information (C_Ns), generated corresponding to the second and third programs (PG #2, #3) The number of cells is recorded.

In addition, in the cell type information (C_TY) included in the first, second, and third cell information (Cell #1, #2, #3), a corresponding cell is a movie cell or the like. Since 2 bits of cell type identification information (C_TY1) for indicating whether the corresponding cell is applicable and 3 bits of cell channel number information (C_CH_N) for indicating a broadcast channel number corresponding to the corresponding cell are recorded, as described above, Program information (PGI) and cell information (CI) included in the program chain information (PGCI) and managed reproduction time map information (PTMAPI) included in the recording aggregate information (HOBI) are managed in association with each other.

Therefore, in the case of reproducing the multi-channel stream programs (PG #1, #2, #3) partitioned by one recording set (HOB #1) as described above, three cells generated corresponding to each program ( Cell #1, Cell #2, Cell #3) information and playback time map information (PTMAPI) recorded in association with the cell information are searched and confirmed, and the first channel stream or the second channel stream can be read and reproduced. .

Above, the preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art improve and change various other embodiments within the technical spirit and scope of the present invention disclosed in the appended claims below. , Substitution or addition may be possible.

The above-described multi-channel stream recording apparatus and method according to the present invention improves the convenience of use of a digital recorder user since the multi-channel stream can be searched or reproduced by dividing it for each channel even after recording the multi-channel stream on a recording medium.

Claims (13)

A recording medium having a data structure for reproducing and managing at least video data representing multiple reproduction paths, the method comprising: A data area for storing at least a transport stream of video data, the transport stream being separated into transport packets, each transport packet being associated with one multiple reproduction path, the transport packet In each reproduction path of this field, transport packets of different reproduction paths are interpolated, and A navigation area for storing at least one navigation data item is included, wherein the navigation data item provides navigation information for playing one or more of the multiple playback paths, wherein the navigation area is separated from a map associated with each playback path. And wherein each map provides position data of video data associated with a playback path. The method of claim 1, And the navigation data item includes a multiple reproduction path indicator indicating a navigation data item for providing navigation information for the multiple reproduction paths. The method of claim 2, The navigation data item includes a plurality of reproduction path indicators indicating a plurality of multiple reproduction paths. The method of claim 1, The navigation data item includes a plurality of reproduction path indicators indicating a plurality of multiple reproduction paths. The method of claim 1, And the navigation area includes a navigation list including at least navigation data items. The method of claim 5, The navigation data item includes a multiple playback indicator for indicating a navigation data item that provides navigation information for multiple playback paths. The method of claim 6, The navigation data item includes a plurality of reproduction path indicators indicating a plurality of multiple reproduction paths. The method of claim 1, Wherein each reproduction path corresponds to a digital channel. The method of claim 1, Wherein each reproduction path corresponds to a sub channel of an RF channel. A method of recording a data structure for reproduction management of at least video data representing multiple reproduction paths, the method comprising: Recording at least a transport stream of video data on a record carrier, said transport stream being separated into transport packets, each transport packet being associated with one multiple reproduction path, each reproduction of said transport packets In the path, transport packets of other reproduction paths are interpolated, Record at least one navigation data item, the navigation data item providing navigation information for playing one or more of the multiple playback paths, and And separately recording a map associated with each reproduction path, wherein each map provides position data of video data associated with the reproduction path. A method of reproducing a data structure for reproducing and managing at least video data representing multiple reproduction paths, the method comprising: Reproduces a transport stream of at least video data recorded on a recording medium, the transport stream being separated into transport packets, each transport packet being associated with one multiple reproduction path, In each reproduction path, transport packets of different reproduction paths are interpolated, Play back at least one navigation data item, the navigation data item providing navigation information for playing one or more of the multiple playback paths, and Play a separate map associated with each playback path, each map providing position data of video data associated with the playback path. An apparatus for recording a data structure for reproducing and managing at least video data representing multiple reproduction paths, the apparatus comprising: Driving means for driving an optical reproducer for reproducing data recorded on the recording medium; Control means for operating the driving means to record at least a transport stream of video data from the recording medium, The transport stream is separated into transport packets, each transport packet is associated with one multiple reproduction path, and in each reproduction path of the transport packets, transport packets of different reproduction paths are interpolated, The control means controls the driving means to record at least one navigation data item, the navigation data item provides navigation information for reproducing one or more multiple reproduction paths, and the control means includes the driving means. Means for operatively controlling means to record a separate map associated with each reproduction path, each map providing positional data of video data associated with the reproduction path. An apparatus for reproducing a data structure for reproducing and managing at least video data representing multiple reproduction paths, the apparatus comprising: Driving means for driving an optical reproducer for reproducing data recorded on the recording medium; Control means for operating the driving means to reproduce at least a transport stream of video data from the recording medium, The transport stream is separated into transport packets, each transport packet is associated with one multiple reproduction path, and in each reproduction path of the transport packets, transport packets of different reproduction paths are interpolated, The control means controls the driving means to reproduce at least one navigation data item, the navigation data item provides navigation information for reproducing one or more multiple reproduction paths, and the control means includes the driving means. Control means for reproducing a separate map associated with each reproduction path, each map providing positional data of video data associated with the reproduction path.

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