Method and apparatus for synchronous reproduction of main contents recorded on an interactive recording medium and additional contents therefor

• US 20050019014A1
• Filed: 04/23/2004
• Published: 01/27/2005
• Est. Priority Date: 04/23/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Alexandre, Limonov, Yoon, Woo Seong, Yoo, Jea Yong, Kim, Byung Jin
• Granted Patent: US 7,907,815 B2
• Time in Patent Office: Days
• US Class Current: 386/217
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal
• CPC Class Codes: H04N 9/8227 the additional signal being at least another television signal
• CPC Class Codes: H04N 9/8233 the additional signal being a character code signal
• CPC Class Codes: H04N 9/8715 involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal

Abstract

A method and apparatus for synchronized reproduction of main contents recorded on an interactive recording medium and additional contents therefor is disclosed. The additional contents related to the main contents include time information for synchronizing the additional contents with a part of the main contents.

Claims

1. A method for reproducing a recording medium, comprising the steps of:

obtaining additional data related to the main data recorded on the recording medium; and

presenting the additional data together with the main data, wherein the additional data includes time information for synchronizing the additional data with the main data.

2. The method set forth in claim 1, wherein the additional data is obtained from an external server through a communications network.

3. The method set forth in claim 1, wherein the additional data comprises a data part to be presented and a document part including control information for the data part.

4. The method set forth in claim 3, wherein the data part is a real-time data stream.

5. The method set forth in claim 4, wherein the real-time data stream is a subtitle stream, a subpicture stream, or a video stream.

6. The method set forth in claim 3, wherein the document part is written in the XML.

7. The method set forth in claim 3, wherein the control information includes the time information for synchronization, presentation attribute information for the corresponding data part, and position information indicating where the corresponding data part can be obtained.

8. The method set forth in claim 7, wherein the control information further includes presentation duration information for the corresponding data part and presentation position information indicative of the position at which the corresponding data part will be presented.

9. The method set forth in claim 1, wherein the time information for synchronization has the same value as the presentation time stamp (PTS) of a data block of the main data to be presented in synchronization with the additional data.

10. The method set forth in claim 9, wherein the data block is a PES packet defined in the MPEG standard.

11. The method set forth in claim 1, wherein the additional data comprises at least one ENAV application.

12. The method set forth in claim 1, further comprising the steps of:

analyzing the obtained additional data;

storing the analyzed information in a storage means other than the recording medium; and

obtaining a separate data file that is not included in the additional data from the recording medium or an external server and storing the separate data file in the storage means.

13. The method set forth in claim 12, further comprising the step of adding information on the storage location and size of the data stored in the storage means to the analyzed information.

14. The method set forth in claim 1, wherein the presenting step presents at least a part of the additional data that has time information identical with the presentation time of the main data, while presenting the main data.

15. An apparatus for reproducing a recording medium comprising:

reproducing means for reproducing data recorded on the recording medium;

communicating means for connecting to and communicating with an external communications network;

a main decoder for decoding main data reproduced by the reproducing means;

a controller for storing additional data that is reproduced by the reproducing means or received through the communicating means in a storage means and controlling the presentation time of the additional data; and

a subdecoder for analyzing and decoding the additional data, wherein the additional data includes time information and the controller determines a data block of the main data to be presented in synchronization with the additional data based on the time information and provides the additional data or a part of the additional data to the subdecoder when the data block is provided to the main decoder.

16. The apparatus set forth in claim 15, wherein the additional data comprises a data part to be presented and a document part including control information for the data part.

17. The apparatus set forth in claim 16, wherein the data part is a real-time data stream.

18. The apparatus set forth in claim 16, wherein the control information includes time information for synchronization, presentation attribute information for the corresponding data part, and position information indicating where the corresponding data part can be obtained.

19. The apparatus set forth in claim 15, wherein the data block is a PES packet defined in the MPEG standard.

20. The apparatus set forth in claim 15, wherein the additional data comprises at least one ENAV application.

21. The apparatus set forth in claim 15, wherein the controller performs the further steps of:

analyzing the stored additional data;

storing the analyzed information in the storage means or another storage means; and

obtaining a separate data file that is not included in the additional data from the recording medium or through the communicating means and storing the separate data file.

22. The apparatus set forth in claim 21, wherein the controller further adds information on the storage location and size of the data to the analyzed information.

23. The apparatus for reproducing a recording medium comprising:

means for obtaining additional data related to main data recorded on the recording medium;

storage means for storing the obtained additional data; and

means for determining a part of the main data to be presented in synchronization with the additional data based on the time information and presenting the part together with the additional data.