US2008212672A1PendingUtilityA1

Method and apparatus for delivery of metadata synchronized to multimedia contents

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Assignee: AHN SANG-WOOPriority: Jan 30, 2001Filed: May 1, 2008Published: Sep 4, 2008
Est. expiryJan 30, 2021(expired)· nominal 20-yr term from priority
Inventors:Sang Woo AhnMun Churl KimYong Suk KimJin Soo ChoiJin Woong Kim
G06F 16/48H04L 65/611G11B 27/034H04L 65/70G06F 16/40H04N 21/6437G11B 27/10H04N 21/854H04N 21/242H04N 21/2362H04N 21/84H04N 21/23614G06F 15/16
52
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Claims

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

exact text as granted — not AI-modified
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. 
     
     
         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. 
     
     
         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.

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