Method and apparatus for encoding/decoding

• US 8,271,552 B2
• Filed: 10/13/2006
• Issued: 09/18/2012
• Est. Priority Date: 10/13/2005
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Tae Hyeon, Cha, Hyouk Jean
• Primary Examiner(s): NGUYEN, PHONG H
• Application Number:
  US12/083,381
• Publication Number:
  US 20090154497A1
• Time in Patent Office: 2,167 Days
• Field of Search: 707/736, 707/802, 707/913, 707/915, 707/821, 707/916, 707/955
• US Class Current: 707/821
• 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 encoding/decoding method and apparatus. The encoding method includes generating a data area comprising a plurality of media data areas; generating a plurality of track areas corresponding to the plurality of media data areas, respectively; and generating a meta area comprising a first area comprising identification information on media data and a second area comprising position information on the media data. According to the present invention, the multimedia data encoding/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. A decoding method, implemented by a processor, comprising:

receiving multimedia data, the multimedia data including a file type area having information on a file format, a data area comprising a plurality of media data, and a media information area comprising a slide show area and an audio track area corresponding to image data and audio data in the data area, respectively, the slide show area including a media area and a track meta area, the media area of the slide show area including reproduction duration information, position information, and size information on a plurality of image data, each reproduction duration information, position information, and size information in the media area of the slide show area being allocated for each image data;

parsing the multimedia data, the media information area of the multimedia data being parsed first;

extracting timing information related to the reproduction duration information from the media area of the slide show area of the media information area; and

reproducing the image data and the audio data in the data area, based on the extracted timing information, wherein the image data and the audio data in the data area are dependent on one timeline,

each track meta area of the slide show area and the audio track area includes meta information on the image data and the audio data, respectively, and

each track meta area of the slide show area and the audio track area includes XML format data on the meta information.

2. The decoding method of claim 1, wherein the multimedia data further comprises a meta area and wherein the meta area comprises name and content type information on the plurality of media data.

3. The decoding method of claim 1, wherein the multimedia data further comprises a meta area and wherein the meta area comprises identifications (IDs), position information, and size information on the plurality of media data.

4. The decoding method of claim 1, wherein the slide show area comprises all the timing information on the plurality of media data.

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

6. The decoding method of claim 1, wherein the meta information includes information for distinguishing the media data from each other.

7. The decoding method of claim 1, wherein the track meta area of the slide show area includes information on an animation effect.

8. A decoding apparatus comprising:

a processor coupled to a memory;

a data input unit for receiving multimedia data, via the processor, the multimedia data including a file type area having information on a file format, a data area comprising a plurality of media data, and a media information area comprising a slide show area and an audio track area corresponding to image data and audio data in the data area, respectively, the slide show area including a media area and a track meta area, the media area of the slide show area including reproduction duration information, position information, and size information on a plurality of image data, each reproduction duration information, position information, and size information in the media area of the slide show area being allocated for each image data;

a timing information extractor for parsing the media information area from the received multimedia data and for extracting timing information related to the reproduction duration information from the media area of the slide show area of the media information area; and

a reproducing unit for reproducing the image data and the audio data in the data area, based on the extracted timing information, wherein the image data and the audio data in the data area are dependent on one timeline,

each track meta area of the slide show area and the audio track area includes meta information on the image data and the audio data, respectively, and

each track meta area of the slide show area and the audio track area includes XML format data on the meta information.

9. The decoding apparatus of claim 8, wherein the meta information includes information for distinguishing the media data from each other.

10. The decoding apparatus of claim 8, wherein the track meta area of the slide show area includes information on an animation effect.