Reception apparatus, reception method, transmission apparatus, and transmission method
The present technology relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method, by which channel selection information can be acquired more efficiently. Provided is a reception apparatus, including: a reception unit that receives a broadcast wave of digital broadcasting using an IP (Internet Protocol) transmission system; a communication unit that receives first signaling information for acquiring broadcast content transmitted by the broadcast wave through communication with a server via a network; an acquisition unit that acquires, on the basis of the first signaling information, a physical parameter used in a physical layer in a hierarchy of a protocol of the IP transmission system; and a control unit that controls, on the basis of the physical parameter, operations of respective units that perform channel selection processing. The present technology is applicable to a portable receiver that is movable, for example.
1. A reception apparatus, comprising:
a receiver configured to receive a digital broadcast signal via a first communication path using an IP (Internet Protocol) transmission system;
a communication interface configured to access a server via a second communication path different from the first communication path; and
circuitry coupled to the receiver and the communication interface, the circuitry configured to:
receive first signaling information for acquiring broadcast content transmitted by the digital broadcast signal;
acquire second signaling information relating to characteristics of at least one service included in the broadcast content on the basis of the first signaling information, the second signaling information received from the server via the communication interface;
acquire, on the basis of pointer information included in the first signaling information, channel selection information included in the second signaling information transmitted in a second layer, the second layer being a different layer from a first layer in the hierarchy of the protocol of the IP transmission system, the first signaling information being transmitted in the first layer; and
control, on the basis of the second signaling information, operations of respective units that perform channel selection processing, wherein
the pointer information is information for accessing the channel selection information in a particular service in accordance with a channel selection operation, and
the pointer information includes a first identifier assigned to each broadcaster as a unique value, a second identifier assigned to each stream as a unique value, and a third identifier assigned to each service as a unique value.
2. The reception apparatus according to claim 1 , wherein
the first signaling information is an SDP (Session Description Protocol), and
the second signaling information is an SCD (Service Configuration Description).
3. The reception apparatus according to claim 1 , wherein the circuitry is configured to acquire the channel selection information included in the first signaling information.
4. The reception apparatus according to claim 3 , wherein the channel selection information includes a center frequency, an identifier for identifying a PLP (Physical Layer Pipe), and a value of a preamble included in a frame defined in the IP transmission system.
5. The reception apparatus according to claim 3 , wherein the channel selection information includes a center frequency, a value of an L1-pre signaling constituting a preamble included in a frame defined in the IP transmission system, and a value of a target PLP (Physical Layer Pipe) of Li-post signaling constituting the preamble.
6. The reception apparatus according to claim 3 , wherein the first signaling information is an SDP (Session Description Protocol).
7. A reception method for a reception apparatus, comprising the steps of, by the reception apparatus:
receiving a digital broadcast signal via a first communication path using an IP (Internet Protocol) transmission system;
receiving first signaling information for acquiring broadcast content transmitted by the digital broadcast signal;
acquiring second signaling information relating to characteristics of at least one service included in the broadcast content on the basis of the first signaling information, the second signaling information received from a server via a communication interface configured to access the server via a second communication path different from the first communication path;
acquiring, on the basis of pointer information included in the first signaling information, channel selection information included in the second signaling information transmitted in a second layer, the second layer being a different layer from a first layer in the hierarchy of the protocol of the IP transmission system, the first signaling information being transmitted in the first layer; and
controlling, on the basis of the second signaling information, operations of respective units that perform channel selection processing, wherein
the pointer information is information for accessing the channel selection information in a particular service in accordance with a channel selection operation, and
the pointer information includes a first identifier assigned to each broadcaster as a unique value, a second identifier assigned to each stream as a unique value, and a third identifier assigned to each service as a unique value.
8. A transmission apparatus, comprising:
circuitry configured to:
generate second signaling information relating to characteristics of at least one service included in broadcast content transmitted via a first communication path by a digital broadcast signal using an IP (Internet Protocol) transmission system, the second signaling information being acquirable based upon first signaling information, the first signaling information for acquiring the broadcast content transmitted by the digital broadcast signal; and
a transmitter coupled to the circuitry and configured to transmit the second signaling information to a receiver via a second communication path different from the first communication path in response to a request from the receiver, wherein
the first signaling information includes pointer information for accessing channel selection information included in the second signaling information transmitted in a second layer, the second layer being a different layer from a first layer in the hierarchy of the protocol of the IP transmission system, the first signaling information being transmitted in the first layer.
the pointer information is information for accessing the channel selection information in a particular service in accordance with channel selection operation, and
the pointer information includes a first identifier assigned to each broadcaster as a unique value, a second identifier assigned to each stream as a unique value, and a third identifier assigned to each service as a unique value.
9. The transmission apparatus according to claim 8 wherein
the first signaling information is an SDP (Session Description Protocol), and
the second signaling information is an SCD (Service Configuration Description).
10. The transmission apparatus according to claim 8 , wherein the first signaling information includes the channel selection information.
11. The transmission apparatus according to claim 10 , wherein the channel selection information includes a center frequency, an identifier for identifying a PLP (Physical Layer Pipe), and a value of a preamble included in a frame defined in the IP transmission system.
12. The transmission apparatus according to claim 10 , wherein the channel selection information includes a center frequency, a value of L1-pre signaling constituting a preamble included in a frame defined in the IP transmission system, and a value of a target PLP (Physical Layer Pipe) of L1-post signaling constituting the preamble.
13. The transmission apparatus according to claim 10 , wherein the first signaling information is an SDP (Session Description Protocol).
14. A transmission method for a transmission apparatus, comprising the steps of, by the transmission apparatus:
generating second signaling information relating to characteristics of at least one service included in broadcast content transmitted via a first communication path by a digital broadcast signal using an IP (Internet Protocol) transmission system, the second signaling information being acquirable based upon first signaling information, the first signaling information for acquiring the broadcast content transmitted by the digital broadcast signal; and
transmitting the first signaling information to a receiver via a second communication path different from the first communication path in response to a request from the receiver, wherein
the first signaling information includes pointer information for accessing channel selection information included in the second signaling information transmitted in a second layer, the second layer being a different layer from a first layer in the hierarchy of the protocol of the IP transmission system, the first signaling information being transmitted in the first layer,
the pointer information is information for accessing the channel selection information in a particular service in accordance with channel selection operation, and
the pointer information includes a first identifier assigned to each broadcaster as a unique value, a second identifier assigned to each stream as a unique value, and a third identifier assigned to each service as a unique value.