Method and Apparatus for Encoding/Decoding

• US 20090138512A1
• Filed: 10/13/2006
• Published: 05/28/2009
• Est. Priority Date: 10/13/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Cha, Hyouk Jean, Kim, Tae Hyeon
• Granted Patent: US 8,255,437 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: H04N 21/23412 for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/44012 involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
• CPC Class Codes: H04N 21/8153 comprising still images, e.g. texture, background image
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73
• CPC Class Codes: H04N 21/85406 involving a specific file format, e.g. MP4 format

Abstract

The present invention relates to a multimedia data decoding method and apparatus. The decoding method includes generating a data area comprising a first media data area, a second media data area, and a third media data area, and generating a media information area comprising first, second, and third track areas each corresponding to the first, second, and third media data areas. According to the present invention, the multimedia data decoding method and apparatus has an effect of being capable of constructing a slide show by only a small amount of multimedia data. Thus, a time taken to process and transmit the multimedia data can reduce.

Claims

1. An encoding method comprising:

generating a data area comprising a first media data area, a second media data area, and a third media data area; and

generating a media information area comprising first, second, and third track areas each corresponding to the first, second, and third media data areas,

wherein at least one of the first, second, and third track areas has timing information for reproducing media data comprised in the media data area, and the plurality of media data comprised in the data area are dependent on one timeline.

2. The encoding method of claim 1, wherein the first media data area has a plurality of Joint Photograph Experts Group (JPEG) image data.

3. The encoding method of claim 1, wherein the second media data area has MPEG Audio Layer-3 (MP3) audio data.

4. The encoding method of claim 1, wherein the third media data area has text data in which a character string is distinguished in a line unit.

5. The encoding method of claim 1, wherein a file type area, a media information area comprising the first, second, and third track areas and a meta area having meta information on the media data, and the data area constitute one file, and the file type area has information on a format of the file.

6. The encoding method of claim 1, wherein the first media data area comprises a plurality of image data, and the first track area corresponding to the first media data area comprises timing information for reproducing the plurality of image data.

7. The encoding method of claim 6, wherein the first track area comprises the timing information on the media data comprised in the second and third media data areas.

8. The encoding method of claim 7, wherein the first track area comprises a media area having the timing information on the media data, and a meta area having meta information on the image data.

9. The encoding method of claim 1, wherein the first, second, and third track areas each comprise a media area having the timing information on the media data, and a meta area having meta information on the image data.

10. The encoding method of claim 1, wherein there exists the timing information on each of the plurality of media data.

24. A computer readable recording medium for recording program for executing, by a computer, a method claimed in claim 1.

11. A decoding method comprising:

receiving multimedia data having a data area and a media information area, the data area comprising a first media data area, a second media data area, and a third media data area, and the media information area comprising first, second, and third track areas each corresponding to the first, second, and third media data areas; and

reproducing media data comprised in the media data area, using timing information comprised in at least one of the first, second, and third track areas,

wherein the plurality of media data comprised in the data area are dependent on one timeline.

12. The decoding method of claim 11, wherein the first media data area has a plurality of JPEG image data.

13. The decoding method of claim 11, wherein the second media data area has MP3 audio data.

14. The decoding method of claim 11, wherein the third media data area has text data in which a character string is distinguished in a line unit.

15. The decoding method of claim 11, wherein the first media data area comprises a plurality of image data, and the media information area comprises the timing information for reproducing the plurality of image data.

16. The decoding method of claim 12, wherein there exists the timing information on each of the plurality of media data.

17. An encoding apparatus comprising:

a data area generator for generating a data area comprising a first media data area, a second media data area, and a third media data area;

a media information area generator for generating a media information area comprising first, second, and third track areas each corresponding to the first, second, and third media data areas;

a meta area generator for generating a meta area comprising a first area comprising identification information on the media data and a second area comprising position information on the media data,

wherein at least one of the first, second, and third track areas has timing information for reproducing media data comprised in the media data area, and the plurality of media data comprised in the data area are dependent on one timeline.

18. The encoding apparatus of claim 17, wherein the first media data area has a plurality of JPEG image data.

19. The encoding apparatus of claim 17, wherein the second media data area has MP3 audio data.

20. The encoding apparatus of claim 17, wherein the third media data area has text data in which a character string is distinguished in a line unit.

21. A decoding apparatus comprising:

a data input unit for receiving multimedia data having a data area and a media information area, the data area comprising a first media data area, a second media data area, and a third media data area, and the media information area comprising first, second, and third track areas each corresponding to the first, second, and third media data areas; and

a reproducing unit for reproducing media data comprised in the media data area, using timing information comprised in at least one of the first, second, and third track areas,

wherein the plurality of media data comprised in the data area are dependent on one timeline.

22. The decoding apparatus of claim 21, wherein the first, second, and third media data areas each have a plurality of image data, audio data, and text data.

23. A multimedia data structure comprising:

a data area comprising a first media data area, a second media data area, and a third media data area; and

a media information area comprising first, second, and third track areas each corresponding to the first, second, and third media data areas,

wherein the first, second, and third media data areas each comprise a plurality of image data, audio data, and text data, and the track area comprises timing information for reproducing media data comprised in the media data area.