Method and apparatus of recording a multi-channel stream, and a recording medium containing a multi-channel stream recorded by said method

• US 20020197059A1
• Filed: 06/20/2002
• Published: 12/26/2002
• Est. Priority Date: 06/21/2001
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yoo, Jea Yong, Kim, Byung Jin, Cho, Jang Hui, Seo, Kang Soo
• Granted Patent: US 7,636,512 B2
• Time in Patent Office: Days
• US Class Current: 386/239
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 2220/2579 HD-DVDs [high definition DVDs]; AODs [advanced optical discs]
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8045 using predictive coding
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal
• CPC Class Codes: H04N 9/8227 the additional signal being at least another television signal

Abstract

The present invention relates to method and apparatus of recording a multi-channel data stream on a recording medium in such a manner that substreams of digital channels constituting the multi-channel data stream can be distinguished each other in reproduction. The present recording method records a multi-channel stream composed of substreams belonging to plural selected channels in a single stream object while grouping every partial stream of same channel to a data block and interleaving the data blocks of different channels each other, creates a piece of search information for each substream contained in the recorded multi-channel stream, and records the created plural pieces of search information on the recording medium. The present method makes it possible to selectively search and reproduce each substream among a multi-channel stream recorded on a recording medium, thereby improving use convenience of a recording machine such as a digital video recorder.

Claims

1. A method of recording a multi-channel on a recording medium, comprising the steps of:

(a) recording a multi-channel stream composed of substreams belonging to a plurality of channels in a single stream object while grouping every partial stream of same channel to a data block and interleaving the data blocks of different channels each other; and

(b) creating search information for each substream contained in the recorded multi-channel stream in the single stream object and recording the created search information on a recording medium.

2. The method of claim 1, wherein said step (b) further creates a single piece of program information and as many pieces of cell information as the number of substreams for the single stream object, and records on the recording medium.

3. The method of claim 2, wherein said step (b) further creates a piece of cell information for the recorded multi-channel stream besides pieces of cell information for every substream.

4. The method of claim 3, wherein the search information includes a type field indicating whether an associated stream is a single substream or a multi-channel stream.

5. The method of claim 2, wherein the piece of program information includes a field for writing the number of the plurality of channels.

6. The method of claim 2, wherein the piece of program information includes a field for writing the number of the created pieces of cell information.

7. The method of claim 1, wherein said step (b) further creates a single piece of program information and a single piece of cell information for the single stream object, and records on the recording medium.

8. The method of claim 7, wherein the single piece of cell information includes information about every search information created in said step (b).

9. The method of claim 8, wherein the single piece of cell information further includes information about search information created for not the substream but the multi-channel stream in said step (b).

10. The method of claim 9, wherein the search information includes a type field indicating whether an associated stream is single substream or a multi-channel stream.

11. The method of claim 7, wherein the piece of cell information includes a field for writing the number of the plurality of channels contained in the multi-channel stream.

12. The method of claim 1, wherein said step (b) further creates a couple of pieces of program information and cell information for each substream contained in the single stream object, and records on the recording medium.

13. The method of claim 12, wherein said step (b) further creates a couple of pieces of program information and cell information for the recorded multi-channel stream besides pieces of program information and cell information for every substream.

14. The method of claim 13, wherein the search information includes a type field indicating whether an associated stream is a single substream or a multi-channel stream.

15. The method of claim 1, wherein the data block is equivalent to a random accessible GOP (Group of Pictures) defined by MPEG standard.

16. The method of claim 1, wherein the data block has same size with a stream object unit constituting the single stream object.

19. The apparatus of claim 1, wherein said recording means further creates a single piece of program information and as many pieces of cell information as the number of substreams for the single stream object, and records on the recording medium.

20. The apparatus of claim 19, wherein said recording means further creates a piece of cell information for the recorded multi-channel stream besides pieces of cell information for every substream.

21. The apparatus of claim 18, wherein said recording means further creates a single piece of program information and a single piece of cell information for the single stream object, and records on the recording medium.

22. The apparatus of claim 18, wherein said recording means further creates a couple of pieces of program information and cell information for each substream contained in the single stream object, and records on the recording medium.

23. The apparatus of claim 22, wherein said recording means further creates a couple of pieces of program information and cell information for the recorded multi-channel stream besides pieces of program information and cell information for every substream.

17. A method of recording a multi-channel on a recording medium, comprising the steps of:

(a) recording a multi-channel stream composed of substreams belonging to a plurality of channels in a single stream object while grouping every partial stream of same channel to a data block and interleaving the data blocks of different channels each other; and

(b) creating a single piece of search information and as many pieces of cell information as the number of channels for all substreams of the recorded multi-channel stream in the single stream object and recording the created search information and cell information on a recording medium.

18. An apparatus of recording a multi-channel on a recording medium, comprising:

a data receiver receiving at least one RF channel of a digital broadcast signal to output a multi-channel stream composed of substreams belonging to selected plural sub-channels; and

a recording means recording the multi-channel stream in a single stream object while grouping every partial stream of same channel to a data block and interleaving the data blocks of different channels each other, creating search information for each substream contained in the recorded stream, and recording the created search information on the recording medium.

24. A recording medium for recording digital data stream, comprising:

a single stream object in which a multi-channel stream composed of substreams belonging to a plurality of channels has been recorded, the recorded multi-channel stream consisting of successive data blocks which are interleaved each other by channel;

plural pieces of search information created for each of the substreams contained in the stream object; and

at least one piece of program information and at least one piece of cell information created for the multi-channel stream in the single stream object.