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

• US 20020196361A1
• 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 7,623,758 B2
• Time in Patent Office: Days
• US Class Current: 348/388.1
• 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 method of recording a multi-channel on a recording medium, comprising the steps of:

(a) separating a multi-channel stream composed of substreams belonging to a plurality of channels into individual substreams and recording the individual substreams separately in plural stream objects allocated in a recording medium; and

(b) creating search information every a substream contained in the multi-channel stream recorded in the plural stream objects and recording the created search information on the 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 plural stream objects, and records on the recording medium.

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

4. 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.

5. 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 plural stream objects, and records on the recording medium.

6. The method of claim 5, wherein the single piece of cell information includes information about every search information created in said step (b).

7. The method of claim 5, wherein the piece of cell information includes a field for writing the number of the plurality of channels contained in the multi-channel stream.

8. The method of claim 1, wherein said step (b) further creates a couple of pieces of program information and cell information every a substream contained in one of the plural stream objects, and records on the recording medium.

9. The method of claim 8, wherein the piece of cell information includes channel number of a corresponding substream.

10. 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 separating the multi-channel stream into individual substreams, recording the individual substreams separately in plural stream objects allocated in a recording medium, creating search information every a substream contained in the multi-channel stream distributed into the plural stream objects by sub-channel, and recording the created search information on the recording medium.

11. The apparatus of claim 10, 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 plural stream objects, and records on the recording medium.

12. The apparatus of claim 10, wherein said recording means further creates a single piece of program information and a single piece of cell information for the plural stream objects, and records on the recording medium.

13. The apparatus of claim 10, wherein said recording means further creates a couple of pieces of program information and cell information every a substream contained in one of the plural stream objects, and records on the recording medium.

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

a multi-channel stream composed of substreams belonging to a plurality of channels, the multi-channel stream being distributed into plural stream objects by channel;

plural pieces of search information created every a substream of the multi-channel stream; and

at least one piece of program information and at least one piece of cell information created for the multi-channel stream distributed in the plural stream objects.