Apparatus and method for providing additional information using extension subtitles file

1. An apparatus for providing additional information using an extensible caption file, the apparatus comprising:

a data input unit to receive a multimedia file, a caption data file and an additional information data file as separate files;

an inverse multiplexing unit to separate video and audio data from the multimedia data file;

an XML parser to parse the caption data file and the additional information data file;

video and audio data processing units to decode the video and audio data input from the inverse multiplexing unit, and convert the decoded video and audio data into processed video and audio information;

a caption processing unit to process the caption data file parsed and input by the XML parser to generate processed caption information;

an additional information data processing unit to process the additional information data file parsed and input by the XML parser, and to generate user interface information based on the processed additional information data file; and

a data output unit to display the processed video, audio, caption and user interface information,

wherein the user interface information is located in a layer upper than layers in which the caption and the video are located when the user interface information is displayed, and

wherein the user interface information comprises a non-text type object.

2. The apparatus of claim 1 , wherein the data output unit sets priority values for the video, the caption, and the user interface information and locates them in respective layers of the screen according to the set priority values, and

wherein the user interface information has first priority.

3. The apparatus of claim 1 , wherein the additional information data file includes video, audio and caption information.

4. The apparatus of claim 1 , wherein the character information comprises gender and expression information.

5. The apparatus of claim 1 , wherein the additional information data file comprises information linked to a predetermined website.

6. The apparatus of claim 1 , wherein the user interface information is a character with a predetermined shape that represents additional information on the caption information and the audio information.

7. A method of providing additional information using an extensible caption file, the method comprising:

receiving a multimedia file, a caption data file and an additional information data file as separate files;

parsing the caption data file and the additional information data file input;

generating user interface information by processing the parsed additional information data file; and

displaying the multimedia data, the caption data and the user interface information synchronously,

wherein the user interface information is located in a layer upper than layers in which the caption and the video are located when the user interface information is displayed, and

wherein the user interface information comprises a non-text type object.

8. The method of claim 7 further comprising:

setting priorities for the multimedia data, the caption data file and the user interface information; and

displaying them based on the set priority, and

wherein the user interface information has first priority.

9. The method of claim 7 , wherein the user interface information comprises video, audio and caption information.

10. The method of claim 7 , wherein the additional information overlaps the multimedia data and the caption data.

11. The method of claim 7 , wherein the additional information data file comprises information linked to a predetermined website.

12. The method of claim 7 , wherein the user interface information is a character with a predetermined shape that represents additional information on the caption information and the audio information.

13. An apparatus, comprising:

a data input unit to receive a multimedia file, a caption data file and an additional information data file as separate files;

a caption processing unit configured to process caption information;

an additional data processing unit configured to process the additional information data file and to generate user interface information based on the additional information data file; and

a data output unit configured to combine for display multimedia information of the multimedia data, the caption information, and the user interface information,

wherein the user interface information is located in a layer upper than layers in which the caption and the video are located when the user interface information is displayed, and

wherein the user interface information comprises a non-text type object.

14. The apparatus of claim 13 , further comprising an XML parser configured to parse a caption data file to provide the caption information, and to parse an additional information file to provide the additional data.

15. The apparatus of claim 14 , further comprising:

an inverse multiplexing unit configured to separate video and audio data from the multimedia data; and

video and audio processing units configured to decode, respectively, the video and audio data separated from the multimedia data and to generate video and audio information, wherein the video and audio information is the multimedia information of the multimedia data.

16. The apparatus of claim 13 , wherein the data output unit sets priority values for the video, the caption, and the user interface information and locates them in respective layers of the screen according to the set priority values, and

wherein the user interface information has first priority.

17. The apparatus of claim 13 , wherein the additional information data file comprises information linked to a predetermined website.

18. The apparatus of claim 13 , wherein the user interface information is a character with a predetermined shape that represents additional information on the caption information and the audio information.