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

• US 7,826,720 B2
• Filed: 06/30/2003
• Issued: 11/02/2010
• Est. Priority Date: 06/28/2002
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Um, Soung Hyun, Cho, Sung Ryun, Kim, Mi Hyun, Park, Sung Wan, Kim, Byung Jin, Seo, Kang Soo
• Primary Examiner(s): Tran; Thai
• Assistant Examiner(s): Zhao; Daquan
• Application Number:
  US10/607,984
• Publication Number:
  US 20040001700A1
• Time in Patent Office: 2,682 Days
• Field of Search: 386/1, 386/45, 386/95, 386125-126, 386105-106
• US Class Current: 386/334
• 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 27/3027 used signal is digitally coded
• 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

Abstract

The recording medium includes at least one navigation area storing navigation management information for managing reproduction of the multiple reproduction path video data recorded on the recording medium. The navigation area has a plurality of angle change recording information corresponding to each of a plurality of data blocks.

Claims

1. A recording medium storing a data structure for managing reproduction of at least video data having multiple reproduction paths by a reproducing apparatus, comprising:

one or more information files for managing reproduction of the video data having multiple reproduction paths, the video data being stored in one or more clip files, each information file associated with one of the clip files, each clip file of the multiple reproduction paths being associated with one of the multiple reproduction paths, said information file including at least one entry point map, the entry point map mapping a presentation time stamp to an address in the video data for at least one entry point,

wherein the entry point map includes an entry point fine table including fine information of the at least one entry point and an entry point coarse table including coarse information of the at least one entry point, the fine information and coarse information identifying the presentation time stamp and the address, and the coarse information including identification information for referencing a corresponding fine information, the entry point map having angle change information associated with the entry point,

wherein said angle change information indicates whether an angle change is permitted or not, and the angle change information further indicates where the angle change is permitted if the angle change is permitted, the angle change from a current angle to a requested angle is performed if the angle change is permitted, and the current angle is maintained until a position at which exit of the current angle is permitted.

2. The recording medium of claim 1, wherein the angle change information corresponds to each of a plurality of video data blocks, each video data block including at least one entry point, said information file includes a start point of a presentation time stamp, said start point of a presentation time stamp is corresponding to one of said plurality of video data blocks.

3. The recording medium of claim 1, wherein said information file includes source packet identification information for a corresponding one of plurality of video data blocks including at least one entry point.

4. The recording medium of claim 1, wherein said information file includes an indicator for indicating a stream type information of the video data.

5. The recording medium of claim 1, wherein said information file includes offset information regarding I-picture pointing to an address of a last I-picture contained.

6. The recording medium of claim 1, wherein said angle change information corresponds to each of a plurality of video data blocks and the angle change information includes the address of the last interleaved video unit in the corresponding video data block, each video data block including at least one entry point.

7. The recording medium of claim 1, wherein the fine information identifies least significant bits of the presentation time stamp and the address of the entry point and the coarse information identifies most significant bits of the presentation time stamp and the address of the entry point.

8. The recording medium of claim 1, wherein the entry point map includes the entry point fine table and the entry point coarse table to reduce the size of the entry point map and to improve searching performance while reproducing the video data, and the number of entries in the entry point coarse table is less than the number of entries in the entry point fine table.

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

generating one or more information files for managing reproduction of the video data having multiple reproduction paths, the video data being stored in one or more clip files, each information file associated with one of the clip files, each clip file of the multiple reproduction paths being associated with one of the multiple reproduction paths, said information file including at least one entry point map, the entry point map mapping a presentation time stamp to an address in the video data for at least one entry point,

wherein the entry point map includes an entry point fine table including fine information of the at least one entry point and an entry point coarse table including coarse information of the. at least one entry point, the fine information and coarse information identifying the presentation time stamp and the address, and the coarse information including identification information for referencing a corresponding fine information, the entry point map having angle change information associated with the entry point,

wherein said angle change information indicates whether an angle change is permitted or not, and

said angle change information further indicates where the angle change is permitted if the angle change is permitted, the angle change from a current angle to a requested angle is performed if the angle change is permitted and the current angle is maintained until a position at which exit of the current angle is permitted; and

recording the information file on the recording medium.

10. The method of claim 9, wherein said generating step includes encoding at least video data and multiplexing at least video data to create a transport stream.

11. The method of claim 10, wherein said generating step further includes packetizing the transport stream into source packets in accordance with a format of optical disk.

12. 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:

reproducing one or more information files from the recording medium, the information file for managing reproduction of the video data having multiple reproduction paths, the video data being stored in one or more clip files, each information file associated with one of the clip files, each clip file of the multiple reproduction paths being associated with one of the multiple reproduction paths, said information file including at least one entry point map, the entry point map mapping a presentation time stamp to an address in the video data for at least one entry point,

wherein the entry point map includes an entry point fine table including fine information of the at least one entry point and an entry point coarse table including coarse information of the at least one entry point, the fine information and coarse information identifying the presentation time stamp and the address, and the coarse information including identification information for referencing a corresponding fine information, the entry point map having angle change information associated with the entry point,

wherein said angle change information indicates whether an angle change is permitted or not, and

said angle change information further indicates where the angle change is permitted if the angle change is permitted; and

controlling reproduction of the video data having multiple reproduction paths according to the information file, the angle change from a current angle to a requested angle is performed if the angle change is permitted and the current angle is maintained until a position at which exit of the current angle is permitted.

13. The method of claim 12, wherein the controlling step includes analyzing the angle change information if the angle change is requested via an interface, and selectively changing the reproduction path based on the analyzed angle change information.

14. The method of claim 12, wherein the controlling step includes ignoring the request for the angle change, if the request for the angle change is not permitted.

15. 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 configured to record data on the recording medium; and

a controller, operably coupled to the recording unit, configured to control the recording unit to record one or more information files on the recording medium, the information file for managing reproduction of the video data having multiple reproduction paths, the video data being stored in one or more clip files, each information file associated with one of the clip files, each clip file of the multiple reproduction paths being associated with one of the multiple reproduction paths, said information file including at least one entry point map, the entry point map mapping a presentation time stamp to an address in the video data for at least one entry point,

wherein the entry point map includes an entry point fine table including fine information of the at least one entry point and an entry point coarse table including coarse information of the at least one entry point, the fine information and coarse information identifying the presentation time stamp and the address, and the coarse information including identification information for referencing a corresponding fine information, the entry point map having angle change information associated with the entry point, wherein

said angle change information indicates whether an angle change is permitted or not, and

said angle change information further indicates where the angle change is permitted if the angle change is permitted,

wherein the angle change from a current angle to a requested angle is performed if the angle change is permitted and the current angle is maintained until a position at which exit of the current angle is permitted.

16. The apparatus of claim 15, wherein the angle change information corresponds to each of a plurality of video data blocks, each video data block including at least one entry point, the entry point map for accessing the corresponding video block, the entry point map having one or more entry points corresponding to one of said plurality of video data blocks, the video data block including at least one entry point.

17. The apparatus of claim 15, said recording unit comprising:

a recording unit including a pickup unit to record the data on the recording medium.

18. The apparatus of claim 17, wherein said recording unit further comprises:

an encoder configured to encode at least video data;

a multiplexer configured to multiplex at least video data to create a transport stream; and

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

19. 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 configured to reproduce data recorded on the recording medium; and

a controller, operably coupled to the reproducing unit, configured to control the reproducing unit to reproduce one or more information files from the recording medium, and to control the reproducing unit to reproduce the video data based on the information file,

wherein the information file is for managing reproduction of the video data having multiple reproduction paths, the video data are stored in one or more clip files, each information file is associated with one of the clip files, each clip file of the multiple reproduction paths is associated with one of the multiple reproduction paths,

wherein said information file includes at least one entry point map, and the entry point map maps a presentation time stamp to an address in the video data for at least one entry point,

wherein the entry point map includes an entry point fine table including fine information of the at least one entry point and an entry point coarse table including coarse information of the at least one entry point, the fine information and coarse information identifying the presentation time stamp and the address, and the coarse information including identification information for referencing a corresponding fine information, the entry point map having angle change information associated with the entry point,

said angle change information indicates whether an angle change is permitted or not, and

said angle change information further indicates where the angle change is permitted if the angle change is permitted,

wherein, the controller is configured to further control the reproducing unit to reproduce a requested angle based on the angle change information, if the angle change from a current angle to the requested angle is permitted, after reproducing the current angle until a position at which exit of the current angle is permitted.

20. The apparatus of claim 19, wherein said controller is configured to analyze the angle change information if the angle change is requested via an interface, and control the reproducing unit to selectively change the reproduction path based on the analyzed angle change information, the angle change information including at least one indicator for indicating whether the angle change is permitted or not.

21. The apparatus of claim 19, wherein said controller is configured to reference the entry point map within the information file to determine if a request for the angle change is permitted or not, the entry point map including one or more entry points.

22. The apparatus of claim 19, wherein said controller is configured to control the reproducing unit to ignore a request for the angle change, if the request for the angle change is not permitted.

23. The apparatus of claim 19, wherein the angle change information corresponds to each of a plurality of video data blocks,

the controller is configured to control the reproducing unit to delay the angle change until a reproduction position reaches to the end of the video data block.

24. The apparatus of claim 19, further comprises a user interface for receiving the request for the angle change from a user,

wherein the controller operably coupled to the user interface, is configured to perform the angle change based on the received request through the user interface.

25. The apparatus of claim 19, wherein the reproducing unit includes a pickup unit to reproduce the data from the recording medium.