KR20050023373A - Apparatus and method for recording a multichannel stream and, medium thereof - Google Patents

Abstract

PURPOSE: A multichannel stream recording device and method, and a recording medium in accordance with the device and the method are provided to divide a multichannel stream into one video object, and to generate navigation information corresponding to the video object to manage the generated information, thereby selectively reproducing a random channel stream. CONSTITUTION: A data area for storing a transport stream of at least video data is included. The transport stream is separated into transport packets. Each transport packet is associated with one multi reproduction path. To each reproduction path of the transport packets, transport packets of other reproduction path are interleaved, and a navigation area for storing at least one navigation data item is included. The navigation data item supplies navigation information for reproducing more than one of the multi reproduction paths. The navigation area separately stores maps associated with each reproduction path. Each map provides position data of video data associated with the reproduction paths.

Description

Apparatus and method for recording a multichannel stream and medium, etc.

The present invention provides a multichannel stream such as HD-TV (High Definition TV) or SD-TV (Standard Definition TV) broadcast data in a recording medium such as HD-DVD (High Density Digital Versatile Disc). And a multi-channel stream recording apparatus and method for recording and storing the same, and a recording medium accordingly.

Recently, with the development of digital technologies such as digital image compression and digital modulation / demodulation, the standardization of digital television broadcasting is rapidly progressing, and MPEG-2 (Moving Picture) is also used in conventional terrestrial, satellite, and cable broadcasting. It is becoming digitized based on Experts Group-2).

Meanwhile, the digital broadcasting can provide a higher quality broadcasting service than the analog broadcasting signal service according to the development of digital video / audio compression technology and digital transmission technology, and improve interoperability with digital communication media and digital storage media. The digital broadcast is mostly transmitted in the form of a transport stream encoded based on the MPEG-2 scheme.

Therefore, an optical disk device, for example, a DVD recorder (DVD-R) for receiving a transport stream encoded based on the MPEG-2 scheme and recording and storing it on a digital multi-function disk (DVD), It is expected to be developed and widely commercialized.

Meanwhile, in the DVD recorder (DVD-R), the transport stream of the digital broadcast is partitioned and recorded in recording object units (VOBU: Video Object Units) having a predetermined recording size, for example, a recording size of 32 sectors. The recording units of are divided into one recording object (VOB: Video Object) to be reproduced with temporal continuity.

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

On the other hand, in recent years, a high-density DVD (HD-DVD) with a significantly improved data recording capacity compared to a general DVD (DVD), and an optical disk device capable of recording and storing digital data streams on the high-density DVD, such as a high-density DVD recorder (HD) (VDR) standardization work is being discussed among related companies to receive a high-density DVD (HD-DVD) by receiving a multi-channel stream multiplexed on an RF channel such as HD-TV or SD-TV digital broadcasting. There is no specific solution for storing records.

Accordingly, the present invention was created in view of the above circumstances, and when recording a multichannel 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 management information, and a recording medium on which a multichannel stream is recorded.

According to an aspect of the present invention, there is provided a multichannel stream recording method comprising: partitioning and recording a plurality of multiplexed channel streams into a single record set; Generating and recording one program information corresponding to the recording aggregate and a plurality of cell information respectively corresponding to the plurality of channel streams; And generating a plurality of pieces of search information corresponding to the plurality of channel streams, respectively, and linking and recording the plurality of pieces of information to the plurality of cell information.

The multi-channel stream recording method according to the present invention comprises the steps of partitioning and recording a plurality of multiplexed channel streams into one record set; Generating and recording one program information corresponding to the recording aggregate and one cell information corresponding to the plurality of channel streams; And generating a plurality of pieces of search information corresponding to the plurality of channel streams, and linking and recording the plurality of pieces of search information to the one cell information.

The multi-channel stream recording method according to the present invention comprises the steps of partitioning and recording a plurality of multiplexed channel streams into one record set; Generating and recording program information corresponding to the recording aggregate so as to correspond to the plurality of channel streams, and generating a plurality of cell information corresponding to the plurality of channel streams and cooperatively recording the program information; And generating a plurality of pieces of search information corresponding to the plurality of channel streams, respectively, and linking and recording the plurality of pieces of cell information.

The multi-channel stream recording method according to the present invention comprises the steps of partitioning and recording a plurality of multiplexed channel streams into one record set; Generating and recording one program information corresponding to the recording aggregate, a plurality of cell information respectively corresponding to the plurality of channel streams, and another cell information corresponding to the entire plurality of channel streams; And generating a plurality of pieces of search information corresponding to each of the plurality of channel streams and another piece of search information corresponding to the whole of the plurality of channel streams, and linking and recording the respective pieces of information with the cell information. ,

The multi-channel stream recording method according to the present invention comprises the steps of partitioning and recording a plurality of multiplexed channel streams into one record set; Generating and recording one program information corresponding to the recording aggregate and one cell information corresponding to the plurality of channel streams; And generating a plurality of pieces of search information corresponding to each of the plurality of channel streams and another piece of search information corresponding to the whole of the plurality of channel streams, and linking and recording the information with one cell information. ,

The multi-channel stream recording method according to the present invention comprises the steps of partitioning and recording a plurality of multiplexed channel streams into one record set; Generating and recording program information corresponding to each of the plurality of channel streams, another program information corresponding to the entirety of the plurality of channel streams, and a plurality of cell information corresponding to each of the plurality of channel streams; Generating another cell information corresponding to the entire channel stream and cooperatively recording the program information; And generating a plurality of pieces of search information corresponding to the plurality of channel streams and another piece of search information corresponding to the whole of the plurality of channel streams and linking and recording the plurality of pieces of cell information. Features,

According to an aspect of the present invention, there is provided a multichannel stream recording apparatus, comprising: tuning means for tuning and receiving digital broadcasting to selectively output one or a plurality of broadcasting channels; Selection means for selectively outputting a desired multi-channel stream among a plurality of channel streams included in the selective output broadcast channel; And recording means for partitioning and recording the selectively outputted plurality of channel streams into one recording set, and generating and recording navigation information corresponding thereto.

In the recording medium according to the present invention, the recording medium includes a first area in which a plurality of channel streams are recorded, and a second area in which navigation information for reproducing and controlling the plurality of channel streams is recorded. Channel stream. The navigation information is divided into one record set, and navigation information corresponding to the plurality of channel streams is recorded in association with the one record set.

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

First, FIG. 1 illustrates 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 an SD-TV may be used. A tuner unit 10 for tuning to receive the same digital broadcast and selectively outputting one or more desired RF channels; A stream selector (11) for selectively outputting a plurality of desired channel streams among a plurality of digital transport streams included in the selected RF channel; A multi-channel stream recording unit (12) for dividing the selectively outputted plurality of channel streams into respective recording streams (HOBs) by dividing the selected channel streams into different recording aggregates (HOBs), and generating and recording navigation information corresponding thereto; An optical pickup (13) for recording the multi-channel stream and the navigation information output from the multi-channel stream recording unit (12) on a recording medium such as a high density DVD (HD-DVD) 100; And at the request of the user, the control unit 14 for controlling the operation of the configuration means is included.

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

On the other hand, the multi-channel stream recording unit 12 detects and checks different packet IDs (PIDs) included in transport packets (TPs) of the multi-channel streams, and identifies the multi-channel streams. The first channel stream and the second channel stream can be distinguished and recognized. Also, the first channel stream and the second channel stream can be distinguished and recognized in an I-picture unit. A method of partitioning and recording a multiplexed multi-channel stream into which a plurality of different broadcast programs is divided into one record assembly (HOB) and generating and recording navigation information corresponding thereto will be described in detail as follows.

FIG. 3 shows a recording assembly partitioned 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 section 12, the stream selection is performed. The multi-channel stream selectively outputted by the unit 11, for example, the first channel stream and the second channel stream, which are different broadcast programs, is partitioned and recorded into one first recording assembly HOB # 1.

On the other hand, in the multi-channel stream recording unit 12, program chain information (PGCI) for connecting and reproducing the first recording assembly HOB # 1 and another second recording assembly HOB # 2 or the like. In this case, the program chain information (PGCI) includes a single program divided into the first recording assembly (HOB # 1), that is, a first recording of multiple first and second channel streams. The first cell information Cell # 1 and the second cell information Cell # 2, which are reproduction control information corresponding to one program PG # 1, are recorded.

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

Therefore, as shown in FIG. 3, multi-channel streams continuously recorded by one recording operation are partitioned and recorded into one recording set, and respective cell information associated with one program corresponding to the recording set is recorded. Since each channel stream is managed, and each mapping list is generated correspondingly to each cell information, one recording aggregate in which the multichannel stream is partitioned and recorded requires as many mapping lists as the number of channel streams.

In addition, the program managing the multi-channel stream cannot simultaneously include cell information corresponding to another recording aggregate in which a single channel stream is partitioned and recorded. The navigation information generated and recorded as described above is described in detail. The explanation is 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. PGI) includes program type information PG_TY and cell number information C_Ns as shown in FIG. 4.

Meanwhile, as shown in FIG. 5, the program type information PG_TY may be recorded with an 8-bit recording size, and the 1-bit value indicating whether the corresponding program PG is an erasable program can be recorded. A protection flag and three bits of channel number information Channel_Ns for indicating the number of broadcast channels corresponding to the corresponding program are recorded. For example, as illustrated in FIG. 3, two channel streams are stored. 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 two cells corresponding to the generated first program PG # 1 is recorded.

As shown in Fig. 4, the cell information CI includes cell type information C_TY, record set search pointer number information HOBI_SRPN, presentation time map number information (PTMAPN), and cell start. The play time information C_V_S_PTM and the cell end play time information C_V_E_PTM are included and recorded. The cell type information C_TY may be recorded with an 8-bit recording size, as shown in FIG. 2-bit cell type identification information C_TY1 for indicating whether a cell corresponds to a movie cell, etc., and 3-bit cell channel number information for indicating a broadcast channel number corresponding to the cell. C_CH_N) is recorded including, for example, as shown in FIG. 3, when the two channel streams are the first cell information and the second cell information corresponding to the multi-recorded first program PG # 1, Each of the two bits of cell type identification information C_TY1 indicates a video cell. And '00b' is recorded for the other bet, in the cell, the channel number information (C_CH_N) of said 3 bits, the channel number corresponding to the first and second channel streams are recorded.

On the other hand, in the record aggregation information HOBI generated and recorded in association with the record aggregation search pointer number information HOBI_SRPN included in the cell information CI, as shown in Fig. 7, the record aggregation general information HOBI_GI is shown. And a plurality of playback time map search pointers (PTMAP_SRP # 1 to #n) and a plurality of playback time map information (PTMAPI # 1 to #n) are recorded, and 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 play time information (HOB_V_S_PTM), Record set end play time information (HOB_V_E_PTM), Number of play time maps (PTMAP_Ns) and i th playback The time map start address information (PTMAP_SA #i) is recorded.

The reproduction time map information (PTMAPI) includes the reproduction time map general information (PTMAP_GI) and a plurality of recording unit entries (HOBU_ENT # 1 to #n), and the reproduction time map general information corresponds to the corresponding reproduction time map information (PTMAPI). Video packet ID (V_PID) and audio packet ID (A_PID) corresponding to the play time map information, the number of record unit stream information (HOBI_STIN), the number of record unit entries (HOBU_ENT_Ns), and the start play time information of the play time map information. (PTMAP_S_PTM) and end time information (PTMAP_E_PTM) are recorded.

Therefore, the program information PGI and cell information CI and the playback time map information PTMAPI included and managed in the record aggregation information HOBI are managed in the program chain information PGCI. As shown in FIG. 3, when the multi-channel stream program PG # 1 partitioned and recorded by one recording group HOB # 1 is reproduced, each cell corresponding to the corresponding program PG # 1 is generated. (Cell # 1, Cell # 2) information and playback time map information (PTMAPI) recorded in association with the cell information can be searched and confirmed to selectively read and reproduce the first channel stream or the second channel stream.

FIG. 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, the multi-channel stream recording unit 12 uses the stream selection unit ( And separately recording the first channel stream and the second channel stream, which are different broadcast programs selected and outputted by 11), into one first recording set HOB # 1, and the first recording set HOB # 1. It is possible to generate and record program chain information (PGCI) for connection reproduction of another second recording assembly (HOB # 2) or the like.

In the program chain information PGCI, one program corresponding to the first recording assembly HOB # 1, that is, a first program PG # 1 having multiple recordings of first and second channel streams, First cell information (Cell # 1), which is reproduction control information corresponding to the first program, is recorded and recorded, and in the first recording assembly information (HOBI # 1) corresponding to the first recording assembly (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 partitioned and recorded 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 generated correspondingly.

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

In addition, the cell type information C_TY recorded in the cell information Cell # 1 includes two bits of cell type identification information for indicating whether the corresponding cell corresponds to a movie cell or the like. C_TY1) and three-bit cell channel number information C_CH_N for indicating a broadcast channel number corresponding to the corresponding cell are recorded and recorded. As described above, the program information (managed in the program chain information PGCI) is recorded. PGI), cell information (CI), and playback time map information (PTMAPI) included in the record aggregation information (HOBI) are managed in association with each other.

Therefore, when the multi-channel stream program PG # 1 partitioned and recorded by one recording assembly HOB # 1 is reproduced as described above, one cell corresponding to the corresponding program PG # 1 is generated. 1) The information and the playback time map information (PTMAPI) recorded in association with the cell information are searched and confirmed, so that the first channel stream or the second channel stream can be selectively read out and reproduced.

FIG. 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, the multi-channel stream recording unit 12 uses the stream selection unit ( And separately recording the first channel stream and the second channel stream, which are different broadcast programs selected and outputted by 11), into one first recording set HOB # 1, and the first recording set HOB # 1. It is possible to generate and record program chain information (PGCI) for connection reproduction of another second recording assembly (HOB # 2) or the like.

Meanwhile, the program chain information PGCI includes first and second programs corresponding to the first recording assembly HOB # 1, that is, first programs PG # 1 respectively corresponding to the first and second channel streams. ) 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, are recorded. The first recording set information HOBI # 1 corresponding to the first recording set HOB # 1 includes a first channel mapping list 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.

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

Meanwhile, program type information is recorded in the program information PGI corresponding to the first program PG # 1 and the second program PG # 2, respectively, and the program type information PG_TY is recorded. Each of the first program and the second program includes '001b', which is three bits of channel number information (Channel_Ns) for indicating that one channel stream is recorded, and each of the cell number information (C_Ns) includes one. 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 recorded in the first and second cell information Cell # 1 and Cell # 2 indicates whether the corresponding cell corresponds to a movie cell or the like. 2 bits of cell type identification information (C_TY1) 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 ( The program information PGI and cell information CI included in the PGCI and the reproduction time map information PTMAPI included and managed in the record aggregation information HOBI are managed in association with each other.

Therefore, when the multi-channel stream programs PG # 1 and PG # 2 partitioned and recorded by one recording assembly HOB # 1 as described above are reproduced, the respective programs PG # 1 and PG # 2 are respectively reproduced. Correspondingly generated cell (Cell # 1, Cell # 2) information and playback time map information (PTMAPI) recorded in association with the cell information can be searched and checked to selectively read and reproduce the first channel stream or the second channel stream. Will be.

FIG. 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, the multi-channel stream recording unit 12 uses the stream selection unit ( And separately recording the first channel stream and the second channel stream, which are different broadcast programs selected and outputted by 11), into one first recording set HOB # 1, and the first recording set HOB # 1. It is possible to generate and record program chain information (PGCI) for connection reproduction of another second recording assembly (HOB # 2) or the like.

In the program chain information PGCI, a first program corresponding to the first recording assembly 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 to correspond to the second channel stream, and the first recording set information HOBI # 1 corresponding to the first recording set HOB # 1 may include the first cell information and the second cell information; The first and second channel mapping lists MAPL for Channel 1 & 2, the first channel mapping list MAPL for Channel 1, and the second channel mapping list corresponding to the third cell information, respectively. The agent (MAPL for Channel 2) are recorded generation.

Therefore, multi-channel streams continuously recorded by one recording operation are partitioned and recorded in one first recording set (HOB # 1), and are connected to first and second channels respectively corresponding to the first recording set. The first, second, and third cell information Cell # 1, # 2, # 3 includes a mapping list for the first and second channel streams, a mapping list for the first channel stream, and a second channel, respectively. Mapping lists for the stream are generated correspondingly.

On the other hand, the program type information is recorded in the program information PGI corresponding to the first program PG # 1, and the program type information PG_TY records two channel streams in the first program. '010b', which is three bits of channel number information (Channel_Ns), is recorded and included, and the number of three cells generated corresponding to the first program (PG # 1) is recorded in the cell number information (C_Ns). do.

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

Accordingly, when the multi-channel stream program PG # 1 partitioned and recorded by one recording assembly HOB # 1 is reproduced as described above, three cells corresponding to the corresponding program PG # 1 are generated. 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 out and reproduced.

FIG. 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, the multi-channel stream recording unit 12 uses the stream selection unit ( And separately recording the first channel stream and the second channel stream, which are different broadcast programs selected and outputted by 11), into one first recording set HOB # 1, and the first recording set HOB # 1. It is possible to generate and record program chain information (PGCI) for connection reproduction of another second recording assembly (HOB # 2) or the like.

In the program chain information PGCI, a first program corresponding to the first recording assembly 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 recorded and recorded. The first cell information (Cell # 1) is generated corresponding to the first and second streams. The first record aggregation information HOBI # 1 includes first and second channel mapping lists MAPL for Channel 1 & 2 and first channel mapping list MAPL for Channel 1 corresponding to the first cell information. 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 recorded in the first program PG # 1 corresponding to the first recording set, respectively. In the associated first cell information Cell # 1, mapping lists for the first and second channel streams, mapping lists for the first channel streams, and mapping lists for the second channel streams are generated correspondingly.

On the other hand, the program type information is recorded in the program information PGI corresponding to the first program PG # 1, and the program type information PG_TY records two channel streams in the first program. '010b', which is three bits of channel number information Channel_Ns for indicating that the data is recorded, is recorded and included, and the number of cells generated corresponding to the first program PG # 1 is recorded in the cell number information C_Ns. do.

In addition, in the cell type information C_TY recorded in the first cell information Cell # 1, two-bit cell type identification for indicating whether the cell corresponds to a movie cell or the like is included in the first cell information Cell # 1. Information C_TY1 and three-bit cell channel number information C_CH_N for indicating a broadcast channel number corresponding to the corresponding cell are recorded and recorded, and as described above, the program included in the program chain information PGCI is managed. The information PGI, the cell information CI, and the reproduction time map information PTMAPI included in the record aggregation information HOBI are managed in association with each other.

Therefore, when the multi-channel stream program PG # 1 partitioned and recorded by one recording group HOB # 1 is reproduced as described above, one cell corresponding to the program PG # 1 is generated. 1) The information and the playback time map information (PTMAPI) recorded in association with the cell information are searched and confirmed to read and reproduce the first channel stream or the second channel stream.

FIG. 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, the multi-channel stream recording unit 12 uses the stream selection unit ( And separately recording the first channel stream and the second channel stream, which are different broadcast programs selected and outputted by 11), into one first recording set HOB # 1, and the first recording set HOB # 1. It is possible to generate and record program chain information (PGCI) for connection reproduction of another second recording assembly (HOB # 2) or the like.

The program chain information PGCI includes a first program corresponding to the first recording assembly HOB # 1, that is, a first program PG # 1 corresponding to the first and second channel streams, respectively. 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 and recorded, and are reproduction control information corresponding to the first program. The first cell information (Cell # 1), the second cell information (Cell # 2) corresponding to the second program, and the third cell information (Cell # 3) corresponding to the third program are recorded. In the first recording set information HOBI # 1 corresponding to the recording set HOB # 1, first and second channel mapping lists corresponding to the first cell information, the second cell information, and the third cell information, respectively, are included. (MAPL for Channel 1 & 2), the first channel mapping list (MAPL for Channel 1), and the second channel mapping list (MAPL for Channel 2) It is.

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

On the other hand, the program type information is recorded in the program information PGI corresponding to the first program PG # 1, and the program type information PG_TY records two channel streams in the first program. '010b', which is three bits of channel number information Channel_Ns for indicating that the data is recorded, is recorded and included, and the number of cells generated corresponding to the first program PG # 1 is recorded in the cell number information C_Ns. do.

In addition, one channel stream is recorded in each of the second and third programs in the program type information PG_TY of the program information PGI corresponding to the second and third programs PG # 2 and PG # 3, respectively. '001b', which is three bits of channel number information Channel_Ns to indicate that the data is generated, is recorded and included in the cell number information C_Ns, which are generated corresponding to the second and third programs PG # 2 and # 3. One cell number is recorded.

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

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

As mentioned above, preferred embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

The above-described multi-channel stream recording apparatus and method according to the present invention can improve the user's convenience of using the digital recorder since the multi-channel stream can be searched or reproduced by each channel even after the multi-channel stream is recorded on the recording medium.

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

2 illustrates a channel-specific separation process of a multichannel stream according to the present invention.

FIG. 3 shows a recording assembly partitioned by the multi-channel stream recording method according to the first embodiment of the present invention and navigation information corresponding thereto.

4 to 7 illustrate navigation information cooperatively generated by the multi-channel stream recording method according to the present invention.

FIG. 8 illustrates a recording assembly partitioned by the multi-channel stream recording method according to the second embodiment of the present invention and navigation information corresponding thereto.

FIG. 9 shows a recording assembly partitioned by the multi-channel stream recording method according to the third embodiment of the present invention and navigation information corresponding thereto.

FIG. 10 shows a recording assembly partitioned by the multi-channel stream recording method according to the fourth embodiment of the present invention and navigation information corresponding thereto.

FIG. 11 shows a recording aggregate partitioned by the multi-channel stream recording method according to the fifth embodiment of the present invention and navigation information corresponding thereto.

FIG. 12 shows a recording assembly partitioned by the multi-channel stream recording method according to the sixth embodiment of the present invention and navigation information corresponding thereto.

※ Explanation of code for main part of drawing

10: tuner section 11: stream selection section

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

14: control unit 100: high density DVD

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.