Recording medium having data structure for managing reproduction of multiple reproduction path video data for at least a segment of a title recorded thereon and recording and reproducing methods and apparatuses

• US 7,889,968 B2
• Filed: 06/17/2003
• Issued: 02/15/2011
• Est. Priority Date: 06/24/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Hyun, Eun Sil, Um, Soung Hyun, Park, Sung Wan, Yoo, Jea Yong, Kim, Byung Jin, Seo, Kang Soo
• Primary Examiner(s): Tran; Thai
• Assistant Examiner(s): Dang; Hung Q
• Application Number:
  US10/462,714
• Publication Number:
  US 20040156621A1
• Time in Patent Office: 2,800 Days
• Field of Search: 386/69, 386/95, 386/112, 386/125, 386/126
• US Class Current: 386/241
• CPC Class Codes: G11B 20/1251 for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
• 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 recording medium includes at least one data area storing video data for at least one segment of a title. The video data is recorded as video data packets and at least a portion of the video data packets associated with different reproduction paths for the segment are multiplexed. In one exemplary embodiment, the multiplexed video data packets are multiplexed on a video data packet basis. In another exemplary embodiment, the video data packets associated with each reproduction path for the segment are recorded as one or mores groups and the groups are multiplexed.

Claims

1. A non-transitory computer-readable recording medium having a data structure for managing reproduction of at least video data having multiple reproduction paths recorded thereon, comprising:

at least one clip file storing the video data for a title, the title including a first segment for a single reproduction path and a second segment for multiple reproduction paths, wherein the video data are recorded as video data packets, and the video data packets for the second segment are interleaved; and

at least one management information including reproduction path information corresponding to the segments and at least one entry point map,

wherein the reproduction path information includes information indicating the number of the reproduction paths of the second segment and an identifier identifying a reproduction path ID of the multiple reproduction paths of the second segment, and each reproduction path of the multiple reproduction paths is associated with one of the at least one clip files of the multiple reproduction paths, each of the multiple reproduction paths being associated with a different entry point map, the entry point map mapping a presentation time stamp to an address for a corresponding entry point of the video data, the entry point map including information identifying where changing a reproduction path among the multiple reproduction paths is permitted, the information identifying an entry point at which entry to an associated reproduction path from another reproduction path is permitted,

wherein at least one playlist is included in the reproduction path information, the playlist is a collection of a plurality of playitems, each playitem including an in-time and an out-time for identifying a playing interval of the video data, and the multiple reproduction paths of the second segment are associated with one playitem, a file name extension of the clip file is different from a file name extension of the management information.

2. The non-transitory computer-readable recording medium of claim 1, wherein the entry point maps are aligned in-time.

3. The non-transitory computer-readable recording medium of claim 1, wherein

each video data packet has a packet number that differentiates one video data packet from another;

and

the at least one entry point map identifies the video data for the associated reproduction path by identifying the packet numbers of the video data packets.

4. The non-transitory computer-readable recording medium of claim 1, wherein

the video data packets associated with one or more reproduction paths for the segment are recorded as one or more groups and the groups are multiplexed.

5. The non-transitory computer-readable recording medium of claim 4, wherein each group of the video data packets represents at least an intra-coded picture.

6. The non-transitory computer-readable recording medium of claim 5, wherein a first video data packet in each group is a start of an intra-coded picture.

7. The non-transitory computer-readable recording medium of claim 1, wherein the multiple reproduction paths of the video data for the segment are multiple camera angles of the video data for the segment.

8. The non-transitory computer-readable recording medium of claim 1, wherein the management information comprises at least one clip information file and at least one playlist file.

9. The non-transitory computer-readable recording medium of claim 8, wherein the playlist file is configured to store at least one playitem having the number of the reproduction paths.

10. The non-transitory computer-readable recording medium of claim 1, wherein the entry point maps are configured so that when a user switches from a first reproduction path associated with a first video data packet to a second reproduction path associated with a second video data packet, the second data packet is not reproduced until the reproduction of the first video data packet is complete.

11. 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 at least one clip file storing the video data for a title in a data area such that the video data is recorded as video data packets, the title including a first segment for a single reproduction path and a second segment for multiple reproduction paths, the video data packets for the second segment being interleaved; and

generating management information, the management information including reproduction path information corresponding to the segments and at least one entry point map,

wherein the reproduction path information includes information indicating the number of the reproduction paths of the second segment and an identifier identifying a reproduction path ID of the multiple reproduction paths of the second segment, and each reproduction path of the multiple reproduction paths is associated with one of the at least one clip file of the multiple reproduction paths, each of the multiple reproduction paths being associated with a different entry point map such that the entry point map maps a presentation time stamp to an address for a corresponding entry point of the video data,

wherein the entry point map includes information identifying where changing a reproduction path among the multiple reproduction paths is permitted, the information identifying an entry point at which entry to an associated reproduction path from another reproduction path is permitted, and

wherein at least one playlist is included in the reproduction path information, the playlist is a collection of a plurality of playitems, each playitem including an in-time and an out-time for identifying a playing interval of the video data, and the multiple reproduction paths of the second segment are associated with one playitem, a file name extension of the clip file is different from a file name extension of the management information.

12. The method of claim 11, wherein the entry point maps are aligned in-time.

13. A method of claim 11, wherein each video data packet has a packet number that differentiates one video data packet from another;

and

the entry point map identifies the video data for the associated reproduction path by identifying the packet numbers of the video data packets.

14. The method of claim 11, wherein the management information comprises at least one clip information file and at least one playlist file, the playlist file including at least one playitem having the number of the reproduction paths.

15. 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 management information, the management information including reproduction path information and at least one entry point map from the recording medium, the reproduction path information corresponding to a title in the recording medium, the title including a first segment for a single reproduction path and a second segment for multiple reproduction paths, the reproduction path information including information indicating the number of reproduction paths of the second segment and an identifier identifying a reproduction path ID of the multiple reproduction paths of the second segment, and the entry point map being configured to map a presentation time stamp to an address for a corresponding entry point of the video data, the video data being stored in at least one clip file,

wherein the entry point map includes information identifying where changing a reproduction path among the multiple reproduction paths is permitted, the information identifying an entry point at which entry to an associated reproduction path from another reproduction path is permitted, and each reproduction path of the multiple reproduction paths are associated with one of the at least one clip file of the multiple reproduction paths, each of the multiple reproduction paths being associated with a different entry point map,

wherein at least one playlist is included in the reproduction path information, the playlist is a collection of a plurality of playitems, each playitem including an in-time and an out-time for identifying a playing interval of the video data, and the multiple reproduction paths of the second segment are associated with one playitem; and

reproducing the video data for the segments of a title, the video data being recorded as video data packets, and the video data packets for the second segment being interleaved, a file name extension of the clip file is different from a file name extension of the management information.

16. The method of claim 15, wherein the entry point maps are aligned in-time.

17. The method of claim 15, wherein each video data packet has a packet number that differentiates one video data packet from another;

and

the entry point map identifies the video data for the associated reproduction OCRZone path by identifying the packet numbers of the video data packets.

18. The method of claim 15, wherein the management information comprises at least one clip information file and at least one playlist file, the playlist file including at least one playitem having the number of the reproduction paths.

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

a recording unit being configured to record data on the recording medium;

an encoder being configured to encode at least video data having the multiple reproduction paths; and

a controller, operably coupled to the recording unit, being configured to control the recording unit to record at least one clip file including the encoded video data having the multiple reproduction paths on the recording medium such that the video data for a title, the title including a first segment for a single reproduction path and a second segment for multiple reproduction paths, is recorded on the recording medium, the video data being recorded as video data packets, and the video data packets for the second segment being interleaved, and the controller being configured to control the recording unit to record at least one management information including reproduction path information corresponding to the segments and at least one entry point map,

wherein the reproduction path information includes information indicating the number of the reproduction paths of the second segment and an identifier identifying a reproduction path ID of the multiple reproduction paths of the second segment, and each reproduction path of the multiple reproduction paths is associated with each one of the at least one clip file of the multiple reproduction paths, each of the multiple reproduction paths being associated with a different entry point map, the entry point map being configured to map a presentation time stamp to an address for a corresponding entry point of the video data, the entry point map including information identifying where changing a reproduction path among the multiple reproduction paths is permitted, the information identifying an entry point at which entry to an associated reproduction path from another reproduction path is permitted,

wherein at least one playlist is included in the reproduction path information, the playlist is a collection of a plurality of playitems, each playitem including an in-time and an out-time for identifying a playing interval of the video data, and the multiple reproduction paths of the second segment are associated with one playitem, a file name extension of the clip file is different from a file name extension of the management information.

20. The apparatus of claim 19, wherein the entry point maps are aligned in-time.

21. The apparatus of claim 19, wherein each video data packet has a packet number that differentiates one video data packet from another;

and

each entry point map identifies the video data for the associated reproduction path by identifying the packet numbers of the video data packets.

22. The apparatus of claim 19, wherein the management information comprises at least one clip information file and at least one playlist file, the playlist file including at least one playitem having the number of the reproduction paths.

23. The apparatus of claim 19, wherein the recording unit includes a pickup unit to record the clip file and the management information on the recording medium.

24. 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:

a reproducing unit being configured to reproduce data recorded on the recording medium;

a controller, operably coupled to the reproducing unit, being configured to control the reproducing unit to reproduce at least one clip file including the video data for a title from a data area, the title including a first segment for a single reproduction path and a second segment for multiple reproduction paths, the video data being recorded as video data packets, and the video, data packets for the second segment being interleaved, and the controller being configured to control the reproducing unit to read at least one management information from the recording medium, the management information including reproduction path information and at least one entry point map, the reproduction path information corresponding to the segments of the title in the recording medium, the reproduction path information including information indicating the number of the reproduction paths of the second segments, and an identifier identifying a reproduction path ID of the multiple reproduction paths of the second segment, each reproduction path of the multiple reproduction paths being associated with one of the at least one clip file of the multiple reproduction paths, each of the multiple reproduction paths being associated with a different entry point map, the entry point map being configured to map a presentation time stamp to an address for a corresponding entry point of the video data,

wherein the entry point map includes information identifying where changing a reproduction path among the multiple reproduction paths is permitted, the information identifying an entry point at which entry to an associated reproduction path from another reproduction path is permitted, and

wherein at least one playlist is included in the reproduction path information, the playlist is a collection of a plurality of playitems, each playitem including an in-time and an out-time for identifying a playing interval of the video data, and the multiple reproduction paths of the second segment are associated with one playitem, a file name extension of the clip file is different from a file name extension of the management information.

25. The apparatus of claim 24, wherein the entry point maps are aligned in-time.

26. The apparatus of claim 24, wherein each video data packet has a packet number that differentiates one video data packet from another;

and

the entry point map identifies the video data for the associated reproduction path by identifying the packet numbers of the video data packets.

27. The apparatus of claim 24, wherein the management information comprises at least one clip information file and at least one playlist file, the playlist file including at least one playitem having the number of the reproduction paths.

28. The apparatus of claim 24, wherein the reproducing unit includes a pickup unit to reproduce the clip file and the management information.