Reception apparatus, reception method, transmission apparatus, and transmission method
The present technique relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method capable of supporting various service modes. The reception apparatus obtains first meta data including class information for providing, in multiple modes, a service transmitted via a digital broadcast signal using an IP transmission method, and controls reproduction of a component of the service by processing a stream including the component of the service for each of the multiple modes based on the class information included in the first meta data. The present technique can be applied to, for example, a fixed receiver such as a television receiver, a mobile receiver such as a smartphone, and the like.
1. A reception apparatus comprising:
circuitry configured to
obtain first meta data including a service identifier of a program including at least one of an audio component and a video component, service category information, location information for obtaining service-specific signaling for the program, and class information, the class information indicating at least one video resolution capability required for presenting the program, the program is transmitted via a digital broadcast signal using an Internet Protocol (IP) transmission method, the first meta data indicating whether any component of the program is delivered separately from the digital broadcast signal, and the service-specific signaling is required to reproduce the program from the digital broadcast signal; and
control reproduction of the program by processing at least one component of the program based on the at least one video resolution capability indicated in the class information included in the first meta data, wherein the circuitry is further configured to
obtain the service-specific signaling, which is required to reproduce the program from the digital broadcast signal, based on the location information, and
process the at least one component based on the service-specific signaling, which is required to reproduce the program from the digital broadcast signal.
2. The reception apparatus according to claim 1 , wherein
the program is a program providing layered coding, and
the class information includes information for providing a base layer and information for providing an enhancement layer.
3. The reception apparatus according to claim 1 , wherein
the first meta data includes signaling scope information indicating whether each of plural video component streams of the program can be obtained by using only the service-specific signaling distributed via broadcast, and
the circuitry is configured to obtain the service-specific signaling based on the signaling scope information.
4. The reception apparatus according to claim 1 , wherein
the first meta data includes shortcut information indicating whether each of plural video component streams of the program is a basic service that can be individually identified by a Multipurpose Internet Mail Extension (MIME) type, or a service other than the basic service, and
the circuitry is configured to obtain the service-specific signaling based on the shortcut information.
5. The reception apparatus according to claim 1 , wherein
the first meta data includes hybrid information indicating whether each of plural video component streams of the program is distributed only via broadcast or distributed via the broadcast and via communication, and
the circuitry is configured to obtain the service-specific signaling based on the hybrid information.
6. The reception apparatus according to claim 1 , wherein each of plural video component streams of the program is distributed via broadcast or via communication, and
the service-specific signaling is distributed via the broadcast or via the communication.
7. The reception apparatus according to claim 1 , wherein
the first meta data is data in a binary format, and is first signaling data transmitted in a lower layer than an IP layer in a protocol stack of the IP transmission method, and
the service-specific signaling is data in a text format, and is second signaling data transmitted in a parent layer with respect to the IP layer in the protocol stack of the IP transmission method.
8. The reception apparatus according to claim 7 , wherein the video component of the program and the second signaling data are transmitted in a Real-time Object Delivery over Unidirectional Transport (ROUTE) session obtained by expanding File Delivery over Unidirectional Transport (FLUTE).
9. A reception method for a reception apparatus, the reception method comprising:
obtaining first meta data including a service identifier of a program including at least one of an audio component and a video component, service category information, location information for obtaining service-specific signaling for the program, and class information, the class information indicating at least one video resolution capability required for presenting the program, the program is transmitted via a digital broadcast signal using an Internet Protocol (IP) transmission method, the first meta data indicating whether any component of the program is delivered separately from the digital broadcast signal, and the service-specific signaling is required to reproduce the program from the digital broadcast signal; and
controlling reproduction of the program by processing at least one component of the program based on the at least one video resolution capability indicated in the class information included in the first meta data, wherein the reception method further comprises:
obtaining the service-specific signaling, which is required to reproduce the program from the digital broadcast signal, based on the location information; and
processing the at least one component based on the service-specific signaling, which is required to reproduce the program from the digital broadcast signal.
10. A transmission apparatus comprising:
circuitry configured to
generate first meta data including a service identifier of a program including at least one of an audio component and a video component, service category information, location information for obtaining service-specific signaling for the program, and class information, the class information indicating at least one video resolution capability required for presenting the program, the program is transmitted via a digital broadcast signal using an Internet Protocol (IP) transmission method, the first meta data indicating whether any component of the program is delivered separately from the digital broadcast signal, the service-specific signaling is required to reproduce the program from the digital broadcast signal, and the service-specific signaling, which is required to reproduce the program from the digital broadcast signal, is to he obtained based on the location information; and
transmit the generated first meta data.
11. The transmission apparatus according to claim 10 , wherein
the program is a program providing layered coding, and
the class information includes information for providing a base layer and information for providing an enhancement layer.
12. The transmission apparatus according to claim 10 , wherein the first meta data includes signaling scope information indicating whether each of plural video component streams of the program can be obtained by using only the service-specific signaling distributed via broadcast.
13. The transmission apparatus according to claim 10 , wherein the first meta data includes shortcut information indicating whether each of plural video component streams of the program is a basic service that can be individually identified by a Multipurpose Internet Mail Extension (MIME) type, or a service other than the basic service.
14. The transmission apparatus according to claim 10 , wherein the first meta data includes hybrid information indicating whether each of plural video component streams of the program is distributed only via broadcast or distributed via the broadcast and via communication.
15. The transmission apparatus according to claim 10 , wherein each of plural video component streams of the program is distributed via broadcast or via communication, and
the service-specific signaling is distributed via the broadcast or via the communication.
16. The transmission apparatus according to claim 10 , wherein
the first meta data is data in a binary format, and is first signaling data transmitted in a lower layer than an IP layer in a protocol stack of the IP transmission method, and
the service-specific signaling is data in a text format, and is second signaling data transmitted in a parent layer with respect to the IP layer in the protocol stack of the IP transmission method.
17. The transmission apparatus according to claim 16 , wherein plural video component streams of the program and the second signaling data are transmitted in a Real-time Object Delivery over Unidirectional Transport (ROUTE) session obtained by expanding File Delivery over Unidirectional Transport (FLUTE).
18. A transmission method for a transmission apparatus, the transmission method comprising:
generating first meta data including a service identifier of a program including at least one of an audio component and a video component, service category information, location information for obtaining service-specific signaling for the program, and class information, the class information indicating at least one video resolution capability required for presenting the program, the program is transmitted via a digital broadcast signal using an Internet Protocol (IP) transmission method, the first meta data indicating whether any component of the program is delivered separately from the digital broadcast signal, the service-specific signaling is required to reproduce the program from the digital broadcast signal, and the service-specific signaling, which is required to reproduce the program from the digital broadcast signal, is to be obtained based on the location information; and
transmitting the generated first meta data.
19. The reception apparatus according to claim 1 , wherein
the service identifier included in the first meta data is of a program transmitted via a digital broadcast signal using an IP transmission method.
20. The reception apparatus according to claim 1 , wherein the audio component and the video component of the program are transmitted via a Real-time Object Delivery over Unidirectional Transport (ROUTE) session.