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

• US 7,570,866 B2
• Filed: 11/07/2003
• Issued: 08/04/2009
• Est. Priority Date: 11/12/2002
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Um, Soung Hyun, Kim, Byung Jin, Seo, Kang Soo
• Primary Examiner(s): Tran; Thai
• Assistant Examiner(s): Dunn; Mishawn
• Application Number:
  US10/702,596
• Publication Number:
  US 20040091241A1
• Time in Patent Office: 2,097 Days
• Field of Search: 386/49, 386/55, 386/95, 386/125
• 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 files.

Claims

1. A recording medium having an executable data structure for managing reproduction by reproducing apparatus of at least video data having multiple reproduction path recorded on the recording medium, comprising:

a plurality of data files, each data filed including video data for one of the multiple reproduction paths,

each data file associated with one reproduction path being separate from each data file associated with another reproduction path such that portions of each data file are not interleaved with portions of other data files, and

each data file having at least two entry points for jumping to another reproduction path;

one or more management files, managing reproduction operations performed by the reproducing apparatus, and including at least one entry point map,

the at least one entry point map mapping a presentation time stamp to an address for a corresponding entry point of the data file, being associated with one of the reproduction paths and identifying entry points in the data file for the associated reproduction path, and further including information associated with each entry point, the information identifying whether a change in reproduction path is permitted in relation to the entry point and including information associated with the entry point indicating a position at which a change in reproduction path is permitted; and

the one or more management files being separate from the at least one data file.

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

3. The recording medium of claim 2, wherein the information further includes, at least one flag associated with an entry points of the clip file, that is set to indicate a change in the reproduction path is permitted.

4. The recording medium of claim 2, wherein the clip file is a stream file including at least video data, the stream file having a plurality of source packets, each source packet including a source packet number.

5. The recording medium of claim 1, wherein each data file is divided into a number of jumping units, a jumping unit being defined as data between two consecutive entry points in an entry point map.

6. The recording medium of claim 5, wherein each jumping unit includes a single entry point of the data file.

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

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

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

10. The recording medium of claim 9, wherein each unit of video data starts with a closed group of pictures (GOP).

11. The recording medium of claim 1, wherein the information indicating a position for a change in reproduction path is a source packet number of the video data.

12. The recording medium of claim 1, wherein if the change in reproduction path is not permitted, a user operation to change reproduction paths is ignored.

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

a playlist file, the playlist file being a collection of playing intervals in a clip of the video data.

14. A recording medium having an executable data structure for managing reproduction by a reproducing apparatus of at least video data having multiple reproduction paths recorded on the recording medium, comprising:

one or more management files, managing reproducing operations performed by the reproducing apparatus, and including at least one entry point map,

the at least one entry point map mapping a presentation time stamp to an address for a corresponding entry point of the video data, being associated with one of the reproduction paths, indicating at least one path change point in the associated reproduction path and identifying a plurality of 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

and wherein the entry point map further includes, information associated with each entry point, the information identifying whether a path change in the reproduction path is permitted and including information associated with the entry point indicating a position at which the path change is permitted; and

the one or more management file being separate from the clip files.

15. The recording medium of claim 14, wherein the information includes at least one flag associated with an entry points of the clip file, that is set to indicate a change in the reproduction path is permitted.

16. The recording medium of claim 14, further comprising:

at least one clip file associated with each reproduction path, wherein portions of each clip file are not interleaved with portions of other clip files.

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

recording video data having reproduction paths in data files of the recording medium,

each data file associated with one reproduction path being separate from each data file associated with another reproduction path such that portions of each data file are not interleaved with portions of other data files, and

each data file having at least two entry points for jumping to another reproduction path; and

recording at least one entry point map associated with each reproduction path in one or more management files of the recording medium,

the at least one entry point map mapping a presentation time stamp to an address for a corresponding entry point of the video data, and identifying entry points in the video data for the associated reproduction path, and further wherein the entry point maps includes information associated with each entry point identifying whether a change in reproduction path is permitted in relation to the entry point and including information associated with the entry point indicating a position at which the change in reproduction path is permitted; and

the one or more management files being separate from the data files.

18. The recording method of claim 17, wherein each of the separate data files is a clip file, and the information includes at least one flag associated with at least one of the entry points of the clip file, that is set to indicate a change in the reproduction path is permitted.

19. The method of claim 17, wherein the information indicating a position at which a change in reproduction path is permitted and the address used by the entry point map is a source packet number of the video data.

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

reading at least one entry point map associated with each reproduction path from one or more management files of the recording medium,

the entry point map mapping a presentation time stamp to an address for a corresponding entry point of the video data, and identifying entry points in the video data for the associated reproduction path; and

reproducing video data from data files of the recording medium according to the entry point map,

each reproduction path of the multiple reproduction paths recorded as at least one data file,

each data file associated with one reproduction path being separate from each data file associated with another reproduction path such that portions of each data file are not interleaved with portions of other data files, and

each data file having at least two entry points for jumping to another reproduction path,

wherein the at least one entry point map includes information associated with each entry point identifying whether a change in reproduction path is permitted in relation to the entry point, and including information associated with the entry point indicating a position at which the change in reproduction path is permitted; and

the one or more management file being separate from the data files.

21. The reproducing method of claim 20, further comprising;

changing a reproduction path between multiple reproduction paths at an entry point at which the change in reproduction path is permitted, if a request for changing a reproduction path is generated.

22. The reproducing method of claim 20, wherein each of the separate data files is a clip file, and the information includes at least one flag associated with at least one of the entry points of the clip file, that is set to indicate a change in the reproduction path is permitted.

23. The method of claim 20, wherein the information indicating a position at which a change in reproduction path is permitted and the address used by the entry point map is a source packet number of the video data.

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

an optical pickup configured to record data on the recording medium; and

a controller, operatively coupled to the optical pickup, configured to control the optical pickup to record the video data having multiple reproduction paths in a plurality of data files of the recording medium,

each data file associated with one reproduction path being separate from each data file associated with another reproduction path such that portions of each data file are not interleaved with portions of other data files, and

each data file having at least two entry points for jumping to another reproduction path;

said controller further configured to control the optical pickup to record at least one entry point map associated with each reproduction path in one or more management files of the recording medium,

the at least one entry point map mapping a presentation time stamp to an address for a corresponding entry point of the video data, and identifying entry points in the video data for the associated reproduction path, and further including information associated with each entry point identifying whether a change in reproduction path is permitted in relation to the entry point, and including information associated with the entry point indicating a position at which the change in reproduction path is permitted; and

the one or more management files being separate from the data files.

25. The recording apparatus of claim 24, further comprising;

an encoder configured to encode at least video data;

a multiplexer configured to multiplex at least video data to create a transport stream according to control information of the controller.

26. The recording apparatus of claim 25, further comprising:

a packetizer configured to packetize the transport stream from the multiplexer into source packets in accordance with a format of an optical disk, wherein said packetizer is controlled by the controller.

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

an optical pickup configured to reproduce data recorded on the recording medium;

a controller, operatively coupled to the optical pickup, configured to control the optical pickup to read at least one entry point map associated with each reproduction path from one or more management files of the recording medium,

the entry point map mapping a presentation time stamp to an address for a corresponding entry point of the video data, and identifying a plurality of entry points in the video data for the associated reproduction path;

said controller further configured to control the optical pickup to reproduce more than one reproduction path of video data from data files of the recording medium, wherein each reproduction path is recorded as at least one data file,

each data file associated with one reproduction path being separate from each data file associated with another reproduction path such that portions of each data file are not interleaved with portions of other data files, and

each data file having at least two entry points for jumping to another reproduction path;

wherein the entry point maps include information associated with each entry point identifying whether a change in reproduction path is permitted in relation to the entry point, and including information associated with the entry point indicating a position at which the change in reproduction path is permitted; and

the one or more management files being separate from the data files.

28. The reproducing apparatus of claim 27, wherein said controller is configured to change a reproduction path between multiple reproduction paths at each entry point if a request for changing a reproduction path is generated.

29. The reproducing apparatus of claim 27, wherein each of the separate data files is a clip file, and the information includes at least one flag associated with at least one of the entry points of the clip file, that is set to indicate a change the in reproduction path is permitted.