METHOD AND APPARATUS FOR GENERATING AND ACCESSING METADATA IN MEDIA FILE FORMAT

• US 20090046597A1
• Filed: 04/15/2008
• Published: 02/19/2009
• Est. Priority Date: 08/13/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: YOUM, Sun-hee, CHO, Kyung-sun, PARK, Jeong-hoon
• Granted Patent: US 8,838,638 B2
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: G06F 16/41 Indexing; Data structures therefor; Storage structures
• CPC Class Codes: G11B 2020/1267 Address data
• CPC Class Codes: G11B 27/329 on a disc [VTOC]

Abstract

Provided are a method and apparatus for generating and accessing metadata in a media file format. The method of generating metadata in a media file format includes generating a time-track map composed of a plurality of map nodes that are distinguished according to track and unit time, and generating media objects corresponding to each of the map nodes, in which each of the map nodes includes position information of the corresponding media objects, thereby facilitating real-time reproduction and modification of content.

Claims

1. A method of generating metadata in a media file format, the method comprising:

generating a time-track map comprising a plurality of map nodes that are distinguished according to track and unit time; and

generating media objects corresponding to each of the map nodes,

wherein each of the map nodes includes position information of the corresponding media objects.

2. The method of claim 1, wherein each of the map nodes has a predetermined fixed data size.

3. The method of claim 1, wherein each of the map nodes includes time offset information or data size information of the corresponding media objects.

4. The method of claim 1, further comprising generating object description data corresponding to each of the map nodes,

wherein each of the map nodes includes position information of the object description data.

5. The method of claim 4, further comprising generating object handling data corresponding to each of the map nodes,

wherein each of the map nodes includes position information of the object handling data.

6. A method of generating metadata in a media file format, the method comprising:

generating a time-track map comprising a plurality of map nodes that are distinguished according to track and unit time;

generating individual unit data comprising link structures, each of which corresponds to each of the map nodes and includes a plurality of individual unit data nodes; and

generating media objects corresponding to each of the individual unit data nodes,

wherein each of the map nodes includes position information of the corresponding link structure and each of the individual unit data nodes includes position information of the corresponding media objects.

7. The method of claim 6, wherein each of the map nodes and each of the individual unit data nodes have predetermined fixed data sizes.

8. The method of claim 6, wherein each of the map nodes includes time offset information or data size information of the corresponding link structure.

9. The method of claim 6, wherein each of the individual unit data nodes further includes time offset information or data size information of the corresponding media objects.

10. The method of claim 6, further comprising generating object description data corresponding to each of the map nodes,

wherein each of the individual unit data nodes includes position information of the object description data.

11. The method of claim 10, further comprising generating object handling data corresponding to each of the map nodes,

wherein each of the individual unit data nodes includes position information of the object handling data.

12. A method of accessing metadata in a media file format, the method comprising:

accessing a map node corresponding to track and unit time that are selected by a user in a time-track map;

extracting position information of media objects corresponding to the map node; and

accessing the media objects according to the position information.

13. The method of claim 12, wherein each of the map nodes has a predetermined fixed data size.

14. The method of claim 12, wherein each of the map nodes includes time offset information or data size information of the corresponding media objects.

15. The method of claim 12, further comprising accessing object description data corresponding to each of the map nodes,

wherein each of the map nodes includes position information of the object description data.

16. The method of claim 15, further comprising accessing object handling data corresponding to each of the map nodes,

wherein each of the map nodes includes position information of the object handling data.

17. A method of accessing metadata in a media file format, the method comprising:

accessing a map node corresponding to track and unit time that are selected by a user in a time-track map;

extracting position information of a link structure corresponding to the map node;

accessing the link structure and individual unit data nodes included in the link structure according to the position information of the link structure;

extracting position information of media objects corresponding to the individual unit data nodes; and

accessing the media objects according to the position information of the media objects.

18. The method of claim 17, wherein each of the map nodes and each of the individual unit data nodes have predetermined fixed data sizes.

19. The method of claim 17, wherein each of the map nodes includes time offset information or data size information of the corresponding link structure.

20. The method of claim 17, wherein each of the individual unit data nodes further includes time offset information or data size information of the corresponding media objects.

21. The method of claim 17, further comprising accessing object description data corresponding to each of the map nodes,

wherein each of the individual unit data nodes includes position information of the object description data.

22. The method of claim 21, further comprising accessing object handling data corresponding to each of the map nodes,

wherein each of the individual unit data nodes includes position information of the object handling data.

23. A computer-readable recording medium having recorded thereon a program for executing a method of generating metadata in a media file format, the method comprising:

generating a time-track map comprising a plurality of map nodes that are distinguished according to track and unit time; and

generating media objects corresponding to each of the map nodes,

wherein each of the map nodes includes position information of the corresponding media objects.