Method and apparatus for delivery of metadata synchronized to multimedia contents

• US 20080212672A1
• Filed: 05/01/2008
• Published: 09/04/2008
• Est. Priority Date: 01/30/2001
• Status: Abandoned Application

• Current Assignee: Jin-Soo Choi, Jin-Woong Kim, Mun-Churl Kim, Sang-Woo Ahn, Yong-Suk Kim
• Original Assignee: Jin-Soo Choi, Jin-Woong Kim, Mun-Churl Kim, Sang-Woo Ahn, Yong-Suk Kim
• Inventors: Kim, Jin-Woong, Kim, Yong-Suk, Choi, Jin-Soo, Ahn, Sang-Woo, Kim, Mun-Churl
• Application Number:
  US12/150,779
• Publication Number:
  US 20080212672A1
• Time in Patent Office: Days
• US Class Current: 375/240.01
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References] arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]
• 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 21/854 Content authoring

Abstract

A metadata transmitter synchronized with multimedia contents comprises: a multimedia contents authoring unit for generating and editing multimedia contents; a multimedia contents format converter for compressing the multimedia contents, converting them into a transmission format, and outputting them; a metadata authoring unit for generating and editing metadata for describing the multimedia contents, the metadata including transmission types and transmission information; a metadata format converter for converting the metadata into binary codes, converting the converted metadata into a synchronization format for synchronization with the multimedia contents and a transmission format, and outputting them; and a multiplexer for multiplexing the multimedia contents format and the metadata format respectively output from the multimedia contents format converter and the metadata format converter into a stream, and outputting it.

Claims

1. A method for transmitting metadata synchronized with MPEG-2 multimedia content, the method comprising:

(a) converting the metadata into binary codes;

(b) converting the binary codes into a synchronization format suitable for synchronization with the MPEG-2 multimedia content; and

(c) packetizing the synchronization format into a metadata MPEG-2 packetized elementary stream (PES) packet, wherein the metadata MPEG-2 PES packet includes a metadata access unit (AU) and a stream ID for representing the metadata.

2. The method of claim 1, wherein the metadata MPEG-2 PES packet further includes a presentation time stamp (PTS) and a decoding time stamp (DTS).

3. The method of claim 2, wherein the PTS is established referring to an output time of the metadata AU.

4. The method of claim 3, wherein the PTS is made by adding a synchronization initial value (Offset) to the output time of the metadata AU.

5. The method of claim 3, wherein the PTS is identical to the output time of the metadata AU.

6. The method of claim 1, further comprising:

(d) converting the metadata MPEG-2 PES packet into a metadata MPEG-2 transport stream (TS); and

(e) multiplexing the metadata MPEG-2 TS and a MPEG-2 audio/video TS into a single TS.

7. The method of claim 6, wherein the metadata MPEG-2 PES packet further includes a presentation time stamp (PTS) and a decoding time stamp (DTS).

8. The method of claim 7, wherein the PTS is established referring to an output time of the metadata AU.

9. The method of claim 8, wherein the PTS is made by adding a synchronization initial value (Offset) to the output time of the metadata AU.

10. The method of claim 8, wherein the PTS is identical to the output time of the metadata AU.

11. A method for decoding a transport stream which is multiplexed by a MPEG-2 multimedia content and a metadata synchronized with the MPEG-2 multimedia content, the method comprising:

(a) receiving the transport stream and converting it into a metadata MPEG-2 packetized elementary stream (PES) packet, wherein the metadata MPEG-2 PES packet includes a metadata access unit (AU) and a stream ID for representing the metadata, and a presentation time stamp (PTS); and

(b) decoding the metadata referring to the metadata MPEG-2 PES to be synchronized with the MPEG-2 multimedia content.

12. The method of claim 11, wherein the PTS is used to generate an output time of the metadata AU.

13. The method of claim 12, wherein the output time of the metadata AU is generated by offsetting the PTS with a synchronization initial value (offset value).

14. The method of claim 12, wherein the PTS is identical to the output time of the metadata AU.

24. The method of claim 11, wherein the metadata MPEG-2 PES packet further includes a decoding time stamp (DTS) which is used for decoding the metadata.

15. A MPEG-2 packetized elementary stream (PES) packet comprising:

a metadata access unit (AU);

a stream ID for representing a metadata;

a presentation time stamp (PTS); and

a decoding time stamp (DTS).

16. The MPEG-2 PES packet of claim 15, wherein the PTS is established referring to an output time of the metadata AU.

17. The MPEG-2 PES packet of claim 16, wherein the PTS is made by adding a synchronization initial value (Offset) to the output time of the metadata AU.

18. The MPEG-2 PES packet of claim 17, wherein the PTS is identical to the output time of the metadata AU.

19. A method for transmitting metadata synchronized with MPEG-2 multimedia content, the method comprising:

(a) converting the metadata into a synchronization format suitable for synchronization with the MPEG-2 multimedia content, wherein the synchronization format is MPEG-2 packetized elementary stream (PES) packet including a metadata access unit (AU) and a stream ID for representing the metadata; and

(b) converting the synchronization format into a transport format, wherein the transport format is MPEG-2 Transport Stream (TS) packet.

20. The method of claim 19, wherein the PTS is established referring to an output time of the metadata AU.

21. A method for decoding a MPEG-2 transport stream which includes a metadata synchronized with a MPEG-2 multimedia content, the method comprising:

(a) converting the MPEG-2 transport stream into MPEG-2 packetized elementary stream (PES) packet, wherein the MPEG-2 PES packet includes a metadata access unit (AU) and a stream ID for representing the metadata, and a presentation time stamp (PTS); and

(b) decoding the metadata based upon the PTS.

22. The method of claim 21, wherein the PTS is used to generate an output time of the metadata AU.

23. The method of claim 21, wherein the MPEG-2 PES packet further includes a decoding time stamp (DTS) which is used for decoding the metadata.