Recording medium having data structure for managing reproduction of multiple reproduction path video data recorded thereon and recording and reproducing methods and apparatuses

• US 20040091241A1
• Filed: 11/07/2003
• Published: 05/13/2004
• Est. Priority Date: 11/12/2002
• 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 7,570,866 B2
• Time in Patent Office: Days
• US Class Current: 386/241
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• 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]
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction
• 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 recording medium has a data structure for managing reproduction of at least multiple reproduction path video data recorded on the recording medium. A data area of the recording medium has more than one reproduction path of video data recorded therein. Each reproduction path is recorded as at least one file, and each file associated with one reproduction path is separate from each file associated with another reproduction path such that portions of each file are not interleaved with portions of other flies.

Claims

1. A recording medium having a data structure for managing reproduction of at least multiple reproduction path video data recorded on the recording medium, comprising:

a data area having more than one reproduction path of video data recorded therein, each reproduction path recorded as at least one file, and each file associated with one reproduction path being separate from each file associated with another reproduction path such that portions of each file are not interleaved with portions of other files, and each file being divided into a number of jumping units.

2. The recording medium of claim 1, wherein each of the separate files is a clip file.

3. The recording medium of claim 2, further comprising:

one or more management areas storing at least one entry point map associated with each reproduction path, each entry point map identifying entry points in the video data for the associated reproduction path.

4. The recording medium of claim 3, wherein each jumping unit is defined as data between two consecutive entry points in the entry point map.

5. The recording medium of claim 4, wherein the entry point map includes a flag associated with each entry point, the flag identifying whether a change in reproduction path is permitted in relation to the entry point.

6. The recording medium of claim 5, wherein the flags of the entry points of the clip files are set to indicate a change in reproduction path is permitted.

7. The recording medium of claim 1, further comprising:

one or more management areas storing at least one entry point map associated with reach reproduction path, each entry point map identifying entry points in the video data for the associated reproduction path.

8. The recording medium of claim 7, wherein each jumping unit is defined as data between two consecutive entry points in the entry point map.

9. The recording medium of claim 8, wherein the entry point map includes a flag associated with each entry point, the flag identifying whether a change in reproduction path is permitted in relation to the entry point.

10. The recording medium of claim 9, wherein the flags of the entry points of the clip files are set to indicate a change in reproduction path is permitted.

11. The recording medium of claim 1, wherein each jump unit includes a single entry point of at least video data.

12. The recording medium of claim 1, wherein boundaries between entry points define where changes between reproduction paths are permitted.

13. The recording medium of claim 1, wherein the reproduction paths of video data are different camera angles of video data.

14. The recording medium of claim 1, wherein each unit of video data starts with an I-picture.

15. The recording medium of claim 14, wherein each unit of video data starts with a closed group of pictures (GOP).

16. A recording medium having a data structure for managing reproduction of at least multiple reproduction path video data recorded on the recording medium, comprising:

one or more management areas storing at least one entry point map associated with each reproduction path, each entry point map identifying entry points in a clip file that at least includes video data, the clip file being associated with one of the multiple reproduction paths, and each entry point indicating a path change point in the associated reproduction path.

17. The recording medium of claim 16, wherein the entry point map includes a flag associated with each entry point, the flag identifying whether a change in reproduction path is permitted in relation to the entry point, and the flags of the entry points of the clip files are set to indicate a change in reproduction path is permitted.

18. The recording medium of claim 16, further comprising:

a data area storing at least one clip file associated with each reproduction path, portions of each clip file not being interleaved with portions of other clip files.

19. A method of recording a data structure for managing reproduction of at least multiple reproduction path video data on a recording medium, comprising:

recording more than one reproduction path of video data in a data area of the recording medium, each reproduction path recorded as at least one file, and each file associated with one reproduction path being separate from each file associated with another reproduction path such that portions of each file are not interleaved with portions of other files, and each file being divided into a number of jumping units.

20. A method of reproducing a data structure for managing reproduction of at least multiple reproduction path video data recorded on a recording medium, comprising:

reproducing more than one reproduction path of video data from a data area of the recording medium, each reproduction path recorded as at least one file, and each file associated with one reproduction path being separate from each file associated with another reproduction path such that portions of each file are not interleaved with portions of other files, and each file being divided into a number of jumping units.

21. An apparatus for recording a data structure for managing reproduction of at least multiple reproduction path video data on a recording medium, comprising:

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

an encoder for encoding at least multiple reproduction path video data; and

a controller for controlling the driver to record the multiple reproduction path video data in a data area of the recording medium, each reproduction path recorded as at least one file, and each file associated with one reproduction path being separate from each file associated with another reproduction path such that portions of each file are not interleaved with portions of other files, and each file being divided into a number of jumping units.

22. An apparatus for reproducing a data structure for managing reproduction of at least multiple reproduction path video data recorded on a recording medium, comprising:

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

a controller for controlling the driver to reproduce more than one reproduction path of video data from a data area of the recording medium, each reproduction path recorded as at least one file, and each file associated with one reproduction path being separate from each file associated with another reproduction path such that portions of each file are not interleaved with portions of other files, and each file being divided into a number of jumping units.