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

• US 7,623,758 B2
• Filed: 06/20/2002
• Issued: 11/24/2009
• 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
• Primary Examiner(s): BOCCIO, VINCENT F
• Application Number:
  US10/176,364
• Publication Number:
  US 20020196361A1
• Time in Patent Office: 2,714 Days
• Field of Search: 386125-126, 386/124, 386/95, 386/98, 386/46, 386/92
• US Class Current: 386/248
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/216 Rewritable discs
• CPC Class Codes: G11B 2220/218 Write-once discs
• 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 21/2365 Multiplexing of several video streams
• CPC Class Codes: H04N 21/42646 for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams
• CPC Class Codes: H04N 21/440209 for formatting on an optical medium, e.g. DVD
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

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 separates a multi-channel stream composed of substreams belonging to a plurality of channels into individual substreams, records the individual substreams separately by channel in plural stream objects allocated in a recording medium, creates a piece of search information every a 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 recording medium having a data structure for managing reproduction of at least video data representing multiple reproduction paths, the recording medium comprising:

a data area storing a transport stream of at least video data, the transport stream being divided into transport packets; and

a navigation area storing at least a first navigation data item and a second navigation data item, and the navigation area storing a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data,

wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files.

2. The recording medium of claim 1, wherein the first navigation data item includes an indicator indicating that the first navigation data item provides navigation information for multiple reproduction paths.

3. The recording medium of claim 2, wherein the second navigation data item includes an indicator indicating that the second navigation data item provides navigation information for the single reproduction path.

4. The recording medium of claim 1, wherein the first navigation data item includes an indicator indicating a number of the reproduction paths.

5. The recording medium of claim 1, wherein the navigation area includes a navigation list, the navigation list including at least the navigation data item.

6. The recording medium of claim 1, wherein each reproduction path represents a digital channel.

7. The recording medium of claim 1, wherein the transport packets of each reproduction path area interleaved with one another.

8. A method of recording a data structure for managing reproduction of at least video data representing multiple reproduction paths, the method comprising:

recording a transport stream of at least video data on a recording medium, the transport stream being divided into transport packets;

recording at least a first navigation data item and a second navigation data item; and

recording a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data,

wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files.

9. The method of claim 8, wherein the first navigation data item includes an indicator indicating that the first navigation data item provides navigation information for multiple reproduction paths.

10. The method of claim 8, wherein the first navigation data item includes an indicator indicating a number of the reproduction paths.

11. A method of reproducing at least video data representing multiple reproduction paths, the method comprising:

reproducing at least a first navigation data item and a second navigation data item from a navigation area of a recording medium;

reproducing a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data, wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files; and

reproducing a transport stream of at least video data from the recording medium according to the navigation data item and the separate file, the transport stream being divided into transport packets.

12. The method of claim 11, wherein the first navigation data item includes an indicator indicating that the first navigation data item provides navigation information for multiple reproduction paths.

13. The method of claim 11, wherein the first navigation data item includes an indicator indicating a number of the reproduction paths.

14. An apparatus for recording a data structure for managing reproduction of at least video data representing multiple reproduction paths, the apparatus comprising:

a recording unit being configured to record data on a recording medium; and

a controller, operably coupled to the recording unit, being configured to control the recording unit to record a transport stream of at least video data on a data area of the recording medium, the transport stream being divided into transport packets, the controller being configured to further control the recording unit to record at least a first navigation data item and a second navigation data item on a navigation area of the recording medium, and the controller being configured to further control the recording unit to record a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data,

wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files.

15. The apparatus of claim 14, wherein the controller is configured to further control the recording unit to record an indicator on the navigation area of the recording medium, the indicator indicating that the first navigation data item provides navigation information for multiple reproduction paths.

16. The apparatus of claim 14, wherein the controller is configured to further control the recording unit to record an indicator on the navigation area of the recording medium, the indicator indicating a number of the reproduction paths.

17. An apparatus for reproducing at least video data representing multiple reproduction paths, the apparatus comprising:

a reproducing unit being configured to reproduce data recorded on a recording medium; and

a controller, operably coupled to the reproducing unit, being configured to control the reproducing unit to reproduce at least a first navigation data item and a second navigation data item from a navigation area of the recording medium, and the controller being configured to further control the reproducing unit to reproduce a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data, wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files, and the controller being configured to further control the reproducing unit to reproduce a transport stream of at least video data from a data area of the recording medium according to the navigation data items and the separate files, the transport stream being divided into the transport packets.

18. The apparatus of claim 17, wherein the controller is configured to further control the reproducing unit to reproduce an indicator from the navigation area of the recording medium, the indicator indicating that the first navigation data item provides navigation information for multiple reproduction paths.

19. The apparatus of claim 17, wherein the controller is configured to further control the reproducing unit to reproduce an indicator from the navigation area of the recording medium, the indicator indicating a number of the reproduction paths.

20. The apparatus of claim 17, wherein the reproducing unit includes a pickup unit.