Transmission device, transmission method, reception device and reception method

Abstract

A processing load of a reception side is reduced when a plurality of types of audio data is transmitted. A predetermined format container is transmitted having a predetermined number of audio streams including a plurality of group encoded data. For example, the plurality of group encoded data includes either or both of channel encoded data and object encoded data. Attribute information indicating an attribute of each of the plurality of group encoded data is inserted into a layer of the container. For example, stream correspondence information indicating an audio stream including each of the plurality of group encoded data is further inserted into the layer of the container.

1 . A transmission device comprising:
 a transmission unit for transmitting a predetermined format container having a predetermined number of audio streams including a plurality of group encoded data; and   an information insertion unit for inserting attribute information indicating an attribute of each of the plurality of group encoded data, into a layer of the container.   
     
     
         2 . The transmission device according to  claim 1 , wherein
 the information insertion unit further inserts stream correspondence information indicating an audio stream including each of the plurality of group encoded data, into the layer of the container.   
     
     
         3 . The transmission device according to  claim 2 , wherein
 the stream correspondence information is information indicating a correspondence between a group identifier for identifying each of the plurality of group encoded data and a stream identifier for identifying each of the predetermined number of audio streams.   
     
     
         4 . The transmission device according to  claim 3 , wherein
 the information insertion unit further inserts stream identifier information indicating a stream identifier of each of the predetermined number of audio streams, into the layer of the container.   
     
     
         5 . The transmission device according to  claim 4 , wherein
 the container is an MPEG2-TS, and   the information insertion unit inserts the stream identifier information into an audio elementary stream loop corresponding to each of the predetermined number of audio streams existing under a program map table.   
     
     
         6 . The transmission device according to  claim 2 , wherein
 the stream correspondence information is information indicating a correspondence between the group identifier for identifying each of the plurality of group encoded data and a packet identifier to be attached during packetizing of each of the predetermined number of audio streams.   
     
     
         7 . The transmission device according to  claim 2 , wherein
 the stream correspondence information is information indicating a correspondence between the group identifier for identifying each of the plurality of group encoded data and type information indicating a stream type of each of the predetermined number of audio streams.   
     
     
         8 . The transmission device according to  claim 2 , wherein
 the container is an MPEG2-TS, and   the information insertion unit inserts the attribute information and the stream correspondence information, into an audio elementary stream loop corresponding to any one audio stream of the predetermined number of audio streams existing under the program map table.   
     
     
         9 . The transmission device according to  claim 1 , wherein
 the plurality of group encoded data includes either or both of channel encoded data and object encoded data.   
     
     
         10 . A transmission method comprising:
 a transmission step for transmitting a predetermined format container having a predetermined number of audio streams including a plurality of group encoded data, from a transmission unit; and   an information insertion step for inserting attribute information indicating an attribute of each of the plurality of group encoded data, into a layer of the container.   
     
     
         11 . A reception device comprising:
 a reception unit for receiving a predetermined format container having a predetermined number of audio streams including a plurality of group encoded data, attribute information indicating an attribute of each of the plurality of group encoded data being inserted into a layer of the container; and   a processing unit for processing the predetermined number of audio streams included in the container received, on the basis of the attribute information.   
     
     
         12 . The reception device according to  claim 11 , wherein
 stream correspondence information indicating an audio stream including each of the plurality of group encoded data is further inserted into the layer of the container, and   the processing unit processes the predetermined number of audio streams on the basis of the stream correspondence information, besides the attribute information.   
     
     
         13 . The reception device according to  claim 12 , wherein
 the processing unit selectively performs decoding processing to an audio stream including group encoded data holding an attribute conforming to a speaker configuration and user selection information, on the basis of the attribute information and the stream correspondence information.   
     
     
         14 . The reception device according to  claim 11 , wherein
 the plurality of group encoded data includes either or both of channel encoded data and object encoded data.   
     
     
         15 . A reception method comprising:
 a reception step for receiving a predetermined format container having a predetermined number of audio streams including a plurality of group encoded data, by a reception unit, attribute information indicating an attribute of each of the plurality of group encoded data being inserted into a layer of the container; and   a processing step for processing the predetermined number of audio streams included in the container received, on the basis of the attribute information.   
     
     
         16 . A reception device comprising:
 a reception unit for receiving a predetermined format container having a predetermined number of audio streams including a plurality of group encoded data, attribute information indicating an attribute of each of the plurality of group encoded data being inserted into a layer of the container;   a processing unit for selectively acquiring predetermined group encoded data on the basis of the attribute information from the predetermined number of audio streams included in the container received, and reconfiguring an audio stream including the predetermined group encoded data; and   a stream transmission unit for transmitting the audio stream reconfigured in the processing unit to an external device.   
     
     
         17 . The reception device according to  claim 16 , wherein
 stream correspondence information indicating an audio stream including each of the plurality of group encoded data is further inserted into the layer of the container, and   the processing unit selectively acquires the predetermined group encoded data from the predetermined number of audio streams on the basis of the stream correspondence information, besides the attribute information.   
     
     
         18 . A reception method comprising:
 a reception step for receiving a predetermined format container having a predetermined number of audio streams including a plurality of group encoded data, by a reception unit, attribute information indicating an attribute of each of the plurality of group encoded data being inserted into a layer of the container;   a processing step for selectively acquiring predetermined group encoded data on the basis of the attribute information from the predetermined number of audio streams included in the container received, and reconfiguring an audio stream including the predetermined group encoded data; and   a stream transmission step for transmitting the audio stream reconfigured in the processing step to an external device.