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

• US 20030026597A1
• Filed: 07/23/2002
• Published: 02/06/2003
• Est. Priority Date: 07/24/2001
• 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 7,643,727 B2
• Time in Patent Office: Days
• US Class Current: 386/111
• 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 27/3027 used signal is digitally coded
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 5/781 on disks or drums
• CPC Class Codes: H04N 9/7921 for more than one processing mode
• 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 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 a single or plural stream objects allocated in a recording medium, and creates as many files as the number of channels for the single or plural stream objects. The present method makes it possible to selectively search and reproduce each substream among a recorded multi-channel stream through file selection, thereby improving use convenience of a recording machine such as a digital video recorder.

Claims

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

(a) recording a multi-channel stream composed of substreams belonging to a plurality of channels on a recording medium; and

(b) creating as many files as the number of the plural channels, each file being associated with each substream.

7. The method of claim 1, wherein said step (a) separates the multi-channel stream into individual substreams and records the individual substreams separately in plural stream objects.

2. The method of claim 2, wherein said step (a) records the multi-channel stream in a single stream object.

3. The method of claim 2, wherein said step (a) records the multi-channel stream in the 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.

4. The method of claim 3, wherein the data block is equivalent to a random accessible GOP (Group of Pictures) defined by MPEG standard.

5. The method of claim 3, wherein size of the data block is equal to or larger than that of data allocation unit of the recording medium.

6. The method of claim 5, wherein said each file has size information of the data block.

8. An apparatus of recording a multi-channel stream 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

recording means recording the multi-channel stream in at least one stream object allocated on a recording medium, and creating as many files as the number of substreams to associate each substream with each file.

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

at least one stream object including a multi-channel stream composed of substreams belonging to a plurality of channels; and

plural files associated with the plural substreams one to one.