Recording medium having data structure for managing random/shuffle reproduction of video data recorded thereon and recording and reproducing methods and apparatuses

• US 7,912,338 B2
• Filed: 02/27/2004
• Issued: 03/22/2011
• Est. Priority Date: 02/28/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Mi Hyun, Kim, Byung Jin, Seo, Kang Soo
• Primary Examiner(s): ATALA, JAMIE JO
• Application Number:
  US10/787,160
• Publication Number:
  US 20040170388A1
• Time in Patent Office: 2,580 Days
• Field of Search: 386125-126, 386 68- 70, 386/82, 386/95, 386/94, 386/96, 386/83, 386/1, 386/46, 703/11
• US Class Current: 386/241
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/213 Read-only 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]
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• 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

Abstract

A recording medium having data structures for managing random/shuffle reproduction of video data recorded thereon is disclosed. The recording medium in accordance with the present invention comprises at least one piece of title management information, a playlist directory area storing at least one playlist including at least one playitem, and a stream directory area storing at least one clip of video data associated with the playlist. The title management information includes at least one segment that is associated with at least one playlist in the playlist directory area, and each playitem in the playlist is a unit to be randomized or shuffled during random/shuffle reproduction mode.

Claims

1. A recording medium having a data structure for managing random/shuffle reproduction of video data, the recording medium comprising:

a stream area storing at least one stream file including the video data;

a playlist area storing at least one playlist file including a plurality of playitems, a playitem representing a playing interval of a clip of the video data and indicating a presentation start time and a presentation end time of the playing interval; and

a management area storing at least one title management information file including at least one segment, the segment including a command executing the playlist file, the title management information file being separate and having a different file extension from the playlist file,

wherein the playing interval represented by the playitem is a unit to be randomized or shuffled during random/shuffle reproduction.

2. The recording medium of claim 1, wherein a title managed by the title management information file is a logical unit of the video data that is regarded as a reproduction unit by users.

3. The recording medium of claim 1, wherein the segment is assigned to a reproduction path of the video data.

4. The recording medium of claim 1, wherein the playitem is associated with a whole clip or a portion of clip based on clip information stored in a clip information area of the recording medium.

5. A method for recording a data structure for managing random/shuffle reproduction of video data on a recording medium, the method comprising:

recording with a recording device at least one stream file including the video data in the recording medium;

recording at least one playlist file in the recording medium, the playlist file including a plurality of playitems, a playitem representing a playing interval of a clip of the video data and indicating a presentation start time and presentation end time of the playing interval; and

recording a title management information file in the recording medium, the title management information being separate and having a different file extension from the playlist file, the title management information file including at least one segment, the segment including a command executing the playlist file,

wherein the playing interval represented by the playitem is a unit to be randomized or shuffled during random/shuffle reproduction.

9. The method of claim 5, wherein a title managed by the title management information file is a logical unit of the video data managed by the title management information file as a reproduction unit.

10. The method of claim 5, further comprising associating the playitem with a whole clip or a portion of clip based on clip information stored in the recording medium.

6. A method for reproducing video data recorded on a recording medium having a data structure for managing random/shuffle reproduction of the video data thereon, the method comprising:

reproducing with a reproducing device at least one title management information file including at least one segment from the recording medium, the title management information file including at least one segment, the segment including a command executing a playlist file;

reproducing the playlist file executed by the segment from the recording medium, the playlist file being separate and having a different file extension from the title management information file, the playlist file including a plurality of playitems, a playitem representing a playing interval of a clip of the video data and indicating a presentation start time and a presentation end time of the playing interval; and

reproducing a stream file including the video data from the recording medium;

wherein the playing interval represented by the playitem is a unit to be randomized or shuffled during random shuffle reproduction.

11. The apparatus of claim 6, wherein a title managed by the title management information file is a logical unit of video data that is regarded as a reproduction unit by users.

12. The apparatus of claim 6, further comprising associating the playitem with a whole clip or a portion of clip based on clip information stored in the recording medium.

7. An apparatus for recording a data structure for managing random/shuffle reproduction of video data on a recording medium, the apparatus comprising:

a recording device configured to record data in the recording medium; and

a controller, operably coupled to the recording device to,

record a stream file including the video data on the recording medium,

record at least one playlist file in the recording medium, the playlist file including a plurality of playitems, a playitem representing a playing interval of a clip of the video data and indicating a presentation start time and a presentation end time of the playing interval, the playitems in the playlist being a unit to be randomized or shuffled during random/shuffle reproduction, and

record a title management information file in the recording medium, the title management information file being separate and having different file extension from the playlist file, the title management information file including at least one segment, the segment including a command executing a playlist file.

13. The apparatus of claim 7, wherein a title managed by the title management information file is a logical unit of video data that is regarded as a reproduction unit by users.

14. The apparatus of claim 7, wherein the controller controls the reproducing device to reproduce the playitem associated with a whole clip or a portion of clip based on clip information stored in the recording medium.

17. The apparatus of claim 7, further comprising a source packetizer configured to packetize the video data.

8. An apparatus for reproducing video data recorded on a recording medium having a data structure for managing random/shuffle reproduction of the video data thereon, the apparatus comprising:

a reproducing device configured to reproduce data from the recording medium; and

a controller operably coupled to the reproducing device to,

reproduce a title management information file including at least one segment, the segment including a command executing a playlist file, from the recording medium,

reproduce a playlist file executed by the segment from the recording medium, the playlist file being separate and having a different file extension from the title management information file, the playlist file including a plurality of playitems, a playitem representing a playing interval of a clip of the video data and indicating a presentation start time and a presentation end time of the playing interval, and

reproduce a stream file including the video data from the recording medium,

wherein the playing interval represented by the playitem is a unit to be randomized or shuffled during the random/shuffle reproduction.

15. The apparatus of claim 8, wherein a title managed by the title management information file is a logical unit of video data that is regarded as a reproduction unit by users.

16. The apparatus of claim 8, wherein the controller controls the reproducing device to reproduce the playitem associated with a whole clip or a portion of clip based on clip information stored in the recording medium.

18. The apparatus of claim 8, further comprising a source depacketizer configured to depacketize a packet of the video data.