Method and apparatus for recording a multi-component stream and a high-density recording medium having a multi-component stream recorded thereon and reproducing method and apparatus of said recording medium

• US 20040114910A1
• Filed: 11/07/2003
• Published: 06/17/2004
• Est. Priority Date: 11/08/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Um, Soung Hyun, Kim, Byung Jin, Seo, Kang Soo
• Granted Patent: US 8,064,755 B2
• Time in Patent Office: Days
• US Class Current: 386/95
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR 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 27/329 on a disc [VTOC]

Abstract

The present invention records a main stream containing video contents and an auxiliary stream related therewith as logically-separated clip files on a recording medium. The logically-separated clip files, however, are interleaved on a physical recording area. Because the interleaved units of the auxiliary stream can be individually identified by a file system of the recording medium, the auxiliary stream recorded on the recording medium can be replaced with another one during reproduction or presentation.

Claims

1. A method of recording a multi-component data stream on a recording medium, comprising:

recording a first stream and a second stream as logically-separated files while interleaving the first and the second stream on a physical recording area of the recording medium.

2. The method of claim 1, wherein the first stream is a video stream while the second stream is a data stream associated with video of the first stream.

3. The method of claim 1, wherein an interleaved unit of the first stream is a stream section covered by N (≧

1) entry points, each entry point being an information unit to indicate an arbitrary interval of a data stream.

4. The method of claim 1, wherein an interleaved unit of the first stream is a stream section covered by a plurality of entry points, each entry point being an information unit to indicate an arbitrary interval of a data stream.

5. The method of claim 4, wherein every interleaved unit of the first stream is not covered by same number of entry points.

6. The method of claim 4, wherein a last entry point among the plurality of entry points covering each interleaved unit of the first stream has information indicative of a last interval pertaining to the interleaved unit.

7. The method of claim 1, wherein size of each interleaved unit of the first and the second stream is equal to or multiples of an allocation unit defined by FAT (File Allocation Table) of the recording medium.

8. The method of claim 1, wherein the second stream has data of audio, subtitle, script language, or mark-up language document.

9. The method of claim 1, wherein, on the interleaved stream of the first and the second stream, an interleaved unit of the second stream is adjacent to an interleaved unit of the first stream that is associated with the interleaved unit of the second stream.

10. The method of claim 9, wherein the interleaved unit of the second stream is located just before the associated interleaved unit of the first stream.

11. The method of claim 9, wherein the size of an interleaved unit of the first stream is determined so that a buffer underflow does not occur during a jump to another position on the first stream.

12. The method of claim 1, wherein size information about an interleaved unit of the first and the second stream is recorded in any of a related clip information file for play control thereof, a playlist file, or a playitem included in the playlist file.

13. A method of recording a multi-component data stream on a recording medium, comprising:

recording a main stream and at least one auxiliary stream associated therewith as logically-separated files while interleaving the streams alternately on a physical recording area of the recording medium.

14. A method of reproducing a multi-component data stream recorded on a recording medium, comprising:

reproducing the multi-component data stream, where a first stream and a second stream interleaved on a physical recording area of the recording medium, while reading interleaved units of only the first stream and skipping the interleaved units of the second stream, wherein the first and the second stream are recorded as logically-separated files; and

making presentation of the read units of the first stream in conjunction with a third stream that is received from a device other than the recording medium.

15. The method of claim 14, wherein size of each interleaved unit of the first and the second stream is equal to or multiples of an allocation unit defined by FAT (File Allocation Table) of the recording medium.

16. A method of reproducing a multi-component data stream recorded on a recording medium, comprising:

reproducing the multi-component data stream where a first stream and a second stream interleaved on a physical recording area of the recording medium, wherein the first and the second stream are recorded as logically-separated files; and

at a jump request, moving a reproduction point on a current interleaving unit of the first stream to other target interleaving unit after reproduction of the current interleaving unit to the last.

17. The method of claim 16, wherein the reproducing step reads an interleaved unit of the second stream prior to an associated interleaved unit of the first stream.

18. The method of claim 16, wherein each of the interleaved units of the first stream is a stream section covered by a plurality of entry points, each entry point being an information unit to indicate an arbitrary interval of a data stream.

19. The method of claim 18, wherein the moving step conducts the jumping operation after reproducing a stream interval on the current interleaved unit that is indicated by an entry point having information indicative of a last interval pertaining to the current interleaved unit.

20. A recording medium having a multi-component data stream recorded thereon, comprising:

a first stream and a second stream associated with the first stream being interleaved alternately; and

a first file organized by interleaved units of the first stream and a second file organized by interleaved units of the second stream.

21. The recording medium of claim 20, further comprising a plurality of entry points, each being an information unit to indicate an arbitrary interval of the first stream.

22. The recording medium of claim 21, wherein each of the interleaved units of the first stream is a stream section covered by at least one entry point.

23. The recording medium of claim 22, wherein all of the interleaved units of the first stream are respectively covered by same number of entry points.

24. The recording medium of claim 22, wherein a last entry point among entry points covering each interleaved unit of the first stream has information indicative of a last interval pertaining to the interleaved unit.

25. The recording medium of claim 20, wherein size of each interleaved unit of the first and the second stream is equal to or multiples of an allocation unit defined by FAT (File Allocation Table) of the recording medium.

26. The recording medium of claim 20, wherein the first stream has video data and the second stream has data of audio, subtitle, script language, or mark-up language document.

27. The recording medium of claim 20, wherein, on the interleaved stream of the first and the second stream, an interleaved unit of the second stream is adjacent to an interleaved unit of the first stream that is associated with the interleaved unit of the second stream.

28. The recording medium of claim 27, wherein the interleaved unit of the second stream is located just before the associated interleaved unit of the first stream.

29. An apparatus for recording a multi-component data stream on a recording medium, comprising:

a driver for driving an optical recording device to record data stream on the recording medium;

an encoder for encoding the data stream to be recorded; and

a controller for controlling the driver to record a first stream and a second stream as logically-separated files while making the first and the second stream to be interleaved on a physical recording area of the recording medium.

30. An apparatus for reproducing a multi-component data stream recorded on a recording medium, comprising:

a driver for driving an optical reproducing device to reproduce data stream recorded on the recording medium; and

a controller for controlling the driver to reproduce a multi-component data stream, where a first stream and a second stream interleaved on a physical recording area of the recording medium, while reading only interleaved units of the first stream and skipping the interleaved units of the second stream, wherein the first and the second stream are recorded as logically-separated files.

31. An apparatus for reproducing a multi-component data stream recorded on a recording medium, comprising:

a driver for driving an optical reproducing device to reproduce data stream recorded on the recording medium and for moving the optical reproducing device on the recording medium; and

a controller for controlling the driver to reproduce a multi-component data stream where a first stream and a second stream interleaved on a physical recording area of the recording medium, and at a jump request during the reproduction, to move a reproduction point on a current interleaving unit of the first stream to other target interleaving unit after reproduction of the current interleaving unit to the last, wherein the first and the second stream are recorded as logically-separated files.