Transmission device, transmission method, reception device, and reception method

1. A transmission device comprising:

processing circuitry configured to

generate a number of audio streams including coded data of a plurality of groups,

insert configuration information into a first data packet of a first type in a main stream of the number of audio streams, and

provide a command insertion area for a receiver to insert a command specifying a group from the plurality of groups to be decoded in at least one audio stream among the number of audio streams,

wherein the receiver independently creates the command to be inserted in a second data packet of a second type, the second data packet being included in the at least one audio stream.

2. The transmission device according to claim 1 , wherein

the processing circuitry is configured to insert the second data packet including command information into an audio frame of the main stream of the number of audio streams, and

the command information indicates correspondence relationships of the command with the groups, or a correspondence relationship of the command with a preset group made up of a combination of the plurality of groups.

3. The transmission device according to claim 1 , wherein

the number of audio streams is made up of the main stream and a number of sub-streams, or only of the main stream; and

the processing circuitry is further configured to

insert command information into the main stream and/or a container position corresponding to the main stream.

4. A transmission method comprising:

generating a number of audio streams including coded data of a plurality of groups;

inserting configuration information into a first data packet of a first type in a main stream of the number of audio streams; and

providing a command insertion area for a receiver to insert a command specifying a group from the plurality of groups to be decoded in at least one audio stream among the number of audio streams,

wherein the receiver independently creates the command to be inserted in a second data packet of a second type, the second data packet being included in the at least one audio stream.

5. A reception device comprising:

processing circuitry configured to

receive a number of audio streams including coded data of a plurality of groups and a first data packet of a first type including configuration information of the number of audio streams;

control display of a user interface that includes selection information for at least one group from among the plurality of groups based on the configuration information;

receive a user selection operation of a group of the at least one group to be decoded;

fetch audio streams including the group to be decoded from the number of audio streams and obtain one audio stream constructed by integrating the fetched audio streams; and

insert a command to selectively decode the coded data of the group from among the plurality of groups included in the one audio stream into a second data packet of a second type, the second data packet being included in the one audio stream, the command being based on the user selection operation of the group.

6. The reception device according to claim 5 , wherein the processing circuitry is further configured to

decode the coded data of the group specified by the command from among the plurality of groups included in the one audio stream.

7. The reception device according to claim 5 , wherein the processing circuitry is further configured to

supply the one audio stream to a decoder.

8. The reception device according to claim 5 , wherein the processing circuitry is further configured to

create the command according to the user selection operation of a user via the user interface.

9. The reception device according to claim 5 , wherein

command information for creating the command specifying the group to be decoded from among the plurality of groups is inserted into some of the number of audio streams and/or a container that includes the number of audio streams, and

the processing circuitry is further configured to create the command with reference to the command information.

10. The reception device according to claim 5 , wherein

the one audio stream has a command insertion area for inserting the command for specifying the group to be decoded, and

the processing circuitry is further configured to insert the command into the command insertion area of the one audio stream.

11. The reception device according to claim 5 , wherein the processing circuitry is further configured to control availability of user selection of the selection information for the at least one group based on the configuration information.

12. The reception device according to claim 5 , wherein the plurality of groups includes at least one of sound of overall situation, effect, dialog, audio description, or background music.

13. A reception method comprising:

receiving a number of audio streams including coded data of a plurality of groups and a first data packet of a first type including configuration information of the number of audio streams;

controlling display of a user interface that includes selection information for at least one group from among the plurality of groups based on the configuration information;

receiving a user selection operation of a group of the at least one group to be decoded;

fetching audio streams including the group to be decoded from the number of audio streams and obtaining one audio stream constructed by integrating the fetched audio streams; and

inserting, by processing circuitry of a reception apparatus, a command to selectively decode the coded data of the group from among the plurality of groups included in the one audio stream into a second data packet of a second type, the second data packet being included in the one audio stream, the command being based on the user selection operation of the group.

14. A non-transitory computer-readable storage medium storing instructions which when executed by a computer cause the computer to perform a reception method, the reception method comprising:

receiving a number of audio streams including coded data of a plurality of groups and a first data packet of a first type including configuration information of the number of audio streams;

controlling display of a user interface that includes selection information for at least one group from among the plurality of groups based on the configuration information;

receiving a user selection operation of a group of the at least one group to be decoded;

fetching audio streams including the group to be decoded from the number of audio streams and obtaining one audio stream constructed by integrating the fetched audio streams; and

inserting a command to selectively decode the coded data of the group from among the plurality of groups included in the one audio stream into a second data packet of a second type, the second data packet being included in the one audio stream, the command being based on the user selection operation of the group.

15. The transmission device according to claim 1 , wherein the command insertion area is provided in the second data packet of the at least one audio stream among the number of audio streams.

16. The reception device according to claim 5 , wherein the processing circuitry is configured to insert the second data packet into the one audio stream.