Receiver, reception method, transmitter, and transmission method
The present technology relates to a receiver for efficiently acquiring a component configuring a service, a reception method, a transmitter, and a transmission method. The receiver acquires first signaling data distributed on a broadcast wave of digital broadcasting in an IP transmission system, acquires broadcast signaling data as second signaling data, acquires communication signaling data as the second signaling data when flag information included in the broadcast signaling data indicates that the communication signaling data is provided from a server over the Internet together with the broadcast signaling data, and connects to a stream of a broadcast component or a stream of a communication component thereby to control reproduction of the component on the basis of at least one of the broadcast signaling data and the communication signaling data. The present technology is applicable to TV receivers, for example.
1. A receiver, comprising:
processing circuitry configured to
receive low layer signaling (LLS) data that is service-independent, the LLS data includes location information of communication signaling data,
in response to receiving a selected service for display,
acquire broadcast signaling data of the selected service distributed via broadcast,
when information included in the broadcast signaling data indicates that the communication signaling data of the selected service is available over the Internet, acquire, based on the location information indicated in the LLS data, the communication signaling data, the communication signaling data includes service layer signaling (SLS) data that is service-based signaling data,
receive a video stream and a first audio stream as broadcast components and a second audio stream as a communication component of the selected service, and
control reproduction of the broadcast components and the communication component of the selected service on the basis of the broadcast signaling data or the communication signaling data.
2. The receiver according to claim 1 , wherein the processing circuitry is further configured to acquire the communication signaling data from a server according to the location information included in the LLS data.
3. The receiver according to claim 2 , wherein
the LLS data includes bootstrap information for connecting to a stream of the broadcast signaling data, and the processing circuitry is further configured to
acquire the broadcast signaling data of the selected service according to the bootstrap information included in the LLS data.
4. The receiver according to claim 2 , wherein
the processing circuitry is further configured to
connect to a stream of the broadcast components or the communication component representing the selected service.
5. The receiver according to claim 1 , wherein
the LLS data is transmitted in a lower hierarchy than an IP layer in a protocol stack in an IP transmission system,
the broadcast signaling data is service level signaling data transmitted in a higher hierarchy than the IP layer in the protocol stack in the IP transmission system, and
the communication signaling data is service layer signaling data transmitted in a higher hierarchy than the IP layer in the protocol stack in the IP transmission system.
6. The receiver according to claim 1 , wherein
streams of the broadcast component and the broadcast signaling data are transmitted in a real-time object delivery over unidirectional transport session as extended file delivery over unidirectional transport.
7. The receiver according to claim 1 , wherein
the broadcast components and the communication component include information representing the selected service, the selected service being an edited program produced by a broadcaster and identified by identification information for uniquely specifying the selected service.
8. A reception method in a receiver, the method comprising:
receiving, by processing circuitry, low layer signaling (LLS) data that is service-independent that includes location information of communication signaling data;
in response to receiving a selected service for display,
acquiring, by the processing circuitry, broadcast signaling data of the selected service distributed via broadcast;
when information included in the broadcast signaling data indicates that the communication signaling data of the selected service is available over the Internet, acquiring, by the processing circuitry and based on the location information indicated in the LLS data, the communication signaling data in which the communication signaling data includes service layer signaling (SLS) data that is service-based signaling data;
receiving, by the processing circuitry, a video stream and a first audio stream as broadcast components and a second audio stream as a communication component of the selected service, and
controlling, by the processing circuitry, reproduction of the broadcast components and the communication component of the selected service on the basis of the broadcast signaling data or the communication signaling data.
9. A transmitter comprising:
processing circuitry configured to
generate low layer signaling (LLS) data that is service-independent that includes location information of communication signaling data of one or more services,
generate broadcast signaling data for each of the one or more services including information indicating whether the communication signaling data for the respective service is available over the Internet, and
transmit a video stream and a first audio stream as broadcast components, a second audio stream as a communication component, and the LLS data and the broadcast signaling data to a receiver,
wherein, when the information indicates the communication signaling data for a selected service is available over the Internet, reproduction of the broadcast components and the communication component of the selected service is controlled in the receiver on the basis of the broadcast signaling data, the communication signaling data acquired based on the location information indicated in the LLS data, and the capability information included in the LLS data, the communication signaling data includes service layer signaling (SLS) data that is service-based signaling data.
10. The transmitter according to claim 9 ,
wherein the LLS data includes bootstrap information for connecting to a stream of the broadcast signaling data for each of one or more services.
11. The transmitter according to claim 9 , wherein
the LLS data is transmitted in a lower hierarchy than an IP layer in a protocol stack in an IP transmission system,
the broadcast signaling data is service level signaling data transmitted in a higher hierarchy than the IP layer in the protocol stack in the IP transmission system, and
the communication signaling data is service level signaling data transmitted in a higher hierarchy than the IP layer in the protocol stack in the IP transmission system.
12. The transmitter according to claim 9 ,
wherein streams of the broadcast components and the broadcast signaling data for each of one or more services are transmitted in a real-time object delivery over unidirectional transport session as extended file delivery over unidirectional transport.
13. The transmitter according to claim 9 ,
wherein the broadcast components and the communication component include information representing the selected service, the selected service being an edited program produced by a broadcaster and identified by identification information for uniquely specifying the selected service.
14. A transmission method in a transmitter, comprising:
generating, by processing circuitry, low layer signaling (LLS) data that includes location information of communication signaling data of one or more service;
generating, by the processing circuitry, broadcast signaling data for each of the one or more services including information indicating whether the communication signaling data for the respective service is available over the Internet; and
transmitting, by the processing circuitry, a video stream and a first audio stream as broadcast components, a second audio stream a communication component, and the LLS data and the broadcast signaling data to a receiver,
wherein, when the information indicates the communication signaling data for a selected service is available over the Internet, reproduction of the broadcast components and the communication component of the selected service is controlled in the receiver on the basis of the broadcast signaling data, the communication signaling data acquired based on the location information indicated in the LLS data, and the capability information included in the LLS data, the communication signaling data includes service layer signaling (SLS) data that is service-based signaling data.
15. The receiver according to claim 1 , wherein
the broadcast signaling data is received in a broadcast signaling data stream, and
the communication signaling data is received in a communication signaling data stream.
16. The receiver according to claim 1 , wherein the LLS data including the capability information comprises a Fast Information Channel (FIC) required for tuning to a service.
17. The receiver according to claim 2 , wherein
the LLS data includes the location information of the communication signaling data in association with the selected service, and
the processing circuitry is further configured to, in response to the receiving the selected service for display, acquire the communication signaling data from the server according to the location information included in the LLS data in association with the selected service.