Transmission device, transmission method, reception device, and reception method
The present technology relates to a transmission device, a transmission method, a reception device, and a reception method with each of which it becomes possible to perform transmission of control information according to an operation form. The reception device receives first data that includes control information, which includes information necessary for channel selection of a service, and transmission sequence information indicating a sequence in which the control information is transmitted and that is transmitted in a transmission sequence corresponding to the transmission sequence information, and controls processing on second data, which includes data of a component included in the service, on the basis of the control information acquired according to the transmission sequence information. The present technology can be applied, for example, to a television receiver.
1. A transmission device comprising:
processing circuitry configured to generate (i) first data including control information, which includes information necessary for channel selection of a service, and (ii) a transmission sequence information item indicating a sequence in which the control information is transmitted, the transmission sequence information including:
(a) a class ID for identification of a sequence of the control information, the class ID including a provider ID for identification of a provider of the service and a delivery class ID for identification of transmission sequences with different time sequences, and
(b) version information indicating a version of the control information in each sequence; and
transmission circuitry configured to transmit the first data according to the transmission sequence.
2. The transmission device according to claim 1 , wherein the class ID is for identification of the control information in each transmission cycle as a different transmission sequence, and
the transmission circuitry transmits the first data in such a manner that the control information is transmitted in a transmission cycle corresponding to a transmission sequence.
3. The transmission device according to claim 2 , wherein the class ID indicates that control information to be updated dynamically in a reception device configured to perform channel selection of the service and control information to be updated statically in the reception device are in different transmission sequences, and
the transmission circuitry transmits the first data in such a manner that a transmission cycle of the control information to be updated dynamically becomes shorter than a transmission cycle of the control information to be updated statically.
4. The transmission device according to claim 1 , wherein the control information includes, for each service, one or a plurality of pieces of information to provide various functions, and
the one or the plurality of pieces of information is associated to each sequence of the control information.
5. The transmission device according to claim 1 , wherein the control information includes, for each service, one or a plurality of pieces of information to provide various functions,
the one or the plurality of pieces of information is associated to sequences of the control information, and
priority in updating according to the class ID is assigned to the sequences of the control information.
6. A transmission method in a transmission device, comprising:
generating, by circuitry of the transmission device, first data including (i) control information, which includes information necessary for channel selection of a service, and (ii) a transmission sequence information item indicating a sequence in which the control information is transmitted, the transmission sequence information including:
(a) a class ID for identification of a sequence of the control information, the class ID including a provider ID for identification of a provider of the service and a delivery class ID for identification of transmission sequences with different time sequences, and
(b) version information indicating a version of the control information in each sequence; and
transmitting, by the circuitry of the transmission device, the first data according to the transmission sequence information.
7. A reception device comprising:
a receiver configured to receive first data that includes control information, which includes information necessary for channel selection of a service, and transmission sequence information indicating a sequence in which the control information is transmitted in a transmission sequence corresponding to the transmission sequence information; and
processing circuitry configured to control processing on second data, which includes data of a component included in the service, based on the control information acquired according to the transmission sequence information,
wherein the transmission sequence information includes:
(a) a class ID for identification of a sequence of the control information, the class ID including a provider ID for identification of a provider of the service and a delivery class ID for identification of transmission sequences with different time sequences, and
(b) version information indicating a version of the control information in each sequence.
8. The reception device according to claim 7 , wherein the class ID is for identification of the control information in each transmission cycle as a different transmission sequence, and
the receiver receives the first data transmitted in such a manner that the control information is transmitted in a transmission cycle corresponding to a transmission sequence.
9. The reception device according to claim 8 , wherein it is identified with the class ID that control information to be updated dynamically in a reception device configured to perform channel selection of the service and control information to be updated statically in the reception device are in different transmission sequences, and
the receiver receives the first data transmitted in such a manner that a transmission cycle of the control information to be updated dynamically becomes shorter than a transmission cycle of the control information to be updated statically.
10. The reception device according to claim 7 , wherein the control information includes, for each service, one or a plurality of pieces of information to provide various functions, and
the one or the plurality of pieces of information is associated to each sequence of the control information.
11. The reception device according to claim 7 , wherein the control information includes, for each service, one or a plurality of pieces of information to provide various functions,
the one or the plurality of pieces of information is associated to sequences of the control information, and
priority in updating according to the class ID is assigned to the sequences of the control information.
12. A reception method in a reception device, comprising:
receiving, by circuitry of the reception device, first data that includes control information, which includes information necessary for channel selection of a service, and transmission sequence information indicating a sequence in which the control information is transmitted and that is transmitted in a transmission sequence corresponding to the transmission sequence information; and
controlling, with the circuitry of the reception device, processing on second data, which includes data of a component included in the service, based on the control information acquired according to the transmission sequence information,
wherein the transmission sequence information includes:
(a) a class ID for identification of a sequence of the control information, the class ID including a provider ID for identification of a provider of the service and a delivery class ID for identification of transmission sequences with different time sequences, and
(b) version information indicating a version of the control information in each sequence.
13. The transmission device of claim 1 , wherein the transmission sequence is an N-bit number segmented into consecutive first and second parts, the first part corresponding to the class ID, and the second part corresponding to the version information.
14. The transmission device of claim 1 , wherein the first data is transmitted in an IP packet of an L1 frame, and a header of the L1 frame includes information indicating that the L1 frame includes the first data.
15. The transmission device of claim 1 , wherein the first data is transmitted along with second data including data of a component included in the service.
16. The transmission device according to claim 1 , wherein the delivery class ID is a delivery group ID.