Receiving device, receiving method, transmission device, and transmission method
The present technology relates to a receiving device, a receiving method, a transmission device, and a transmission method for operation of various services. The receiving device acquires trigger information for providing various functions, the trigger information containing type information indicating the type of trigger information and channel information indicating a series for each function provided by the trigger information. The receiving device performs processing corresponding to each function on the basis of the trigger information identified by the type information and the channel information. The present technology is applicable to a television receiver being able to receive a digital broadcast signal, for example.
1. A receiving device, comprising:
circuitry configured to:
acquire trigger information embedded in video data or audio data, the trigger information corresponding to a piece of function information and including
version information of the trigger information,
type information specifying a type of the trigger information indicating that the piece of function information corresponds to one of service signaling information, emergency alerting information, electronic service guide information, viewing history information, and application control information, and
location information indicating a location of an external server corresponding to the piece of function information;
manage the trigger information based on the version information;
access the external server based on the location information via Internet; and
acquire the service signaling information from the external server when the type information indicates that the piece of function information corresponds to the service signaling information.
2. The receiving device according to claim 1 , wherein
the version information indicates update of content of the trigger information.
3. The receiving device according to claim 1 , wherein
the type information indicates that the piece of function information corresponds to the service signaling information,
the service signaling information is transmitted at a level higher than an Internet Protocol (IP) layer in a protocol hierarchy in digital broadcasting using an IP transmission method, and
the circuitry is configured to perform, on the basis of the trigger information, processing corresponding to a function for the service signaling information.
4. The receiving device according to claim 1 , wherein
the circuitry is further configured to acquire the electronic service guide information from the external server when the type information indicates that the piece of function information corresponds to the electronic service guide information.
5. The receiving device according to claim 1 , wherein
the circuitry is further configured to acquire the emergency alerting information when the type information indicates that the piece of function information corresponds to the emergency alerting information.
6. The receiving device according to claim 1 , wherein
the circuitry is further configured to provide the viewing history information to the external server when the type information indicates that the piece of function information corresponds to the viewing history information.
7. The receiving device according to claim 1 , wherein
the location information is a universal resource identifier (URI) of the external server.
8. The receiving device according to claim 1 , wherein
the service signaling information is media presentation description (MPD) according to a Moving Picture Expert Group Dynamic Adaptive Streaming over HTTP (MPEG-DASH) standard and includes a Period element, an AdaptationSet element, and a Representation element;
the type information indicates that the piece of function information corresponds to the MPD; and
the circuitry is configured to acquire the MPD from the external server and acquire contents including broadband contents based on the MPD.
9. The receiving device according to claim 1 , wherein
the circuitry is configured to acquire the application control information from the external server when the type information indicates that the piece of function information corresponds to the application control information.
10. A receiving method of a receiving device, comprising:
acquiring, by the receiving device, trigger information embedded in video data or audio data, the trigger information corresponding to a piece of function information and including
version information of the trigger information,
type information specifying a type of the trigger information indicating that the piece of function information corresponds to one of service signaling information, emergency alerting information, electronic service guide information, viewing history information, and application control information, and
location information indicating a location of an external server corresponding to the piece of function information;
managing the trigger information based on the version information;
accessing the external server based on the location information via Internet; and
acquiring the service signaling information from the external server when the type information indicates that the niece of function information corresponds to the service signaling information.
11. The receiving method according to claim 10 , further comprising:
acquiring the electronic service guide information from the external server when the type information indicates that the piece of function information corresponds to the electronic service guide information.
12. A transmission device, comprising:
circuitry configured to:
generate trigger information corresponding to a piece of function information and including
version information of the trigger information,
type information specifying a type of the trigger information indicating that the piece of function information corresponds to one of service signaling information, emergency alerting information, electronic service guide information, viewing history information, and application control information, and
location information indicating a location of an external server corresponding to the piece of function information;
embed the generated trigger information in video data or audio data; and
transmit the video data or audio data having the generated trigger information embedded therein to a receiving device,
wherein the trigger information is configured to cause management of the trigger information by the receiving device based on the version information.
13. The transmission device according to claim 12 , wherein
the version information indicates update of content of the trigger information.
14. The transmission device according to claim 12 , wherein
the type information indicates that the piece of function information corresponds to the service signaling information transmitted at a level higher than an Internet Protocol (IP) layer in a protocol hierarchy in digital broadcasting using an IP transmission method.
15. The transmission device according to claim 12 , wherein
the type information indicates that the piece of function information corresponds to the electronic service guide information, and
the trigger information is configured to cause acquirement of the electronic service guide information from the external server by the receiving device.
16. The transmission device according to claim 12 , wherein
the type information indicates that the piece of function information corresponds to the emergency alerting information, and
the trigger information is configured to cause acquirement of the emergency alerting information by the receiving device.
17. The transmission device according to claim 12 , wherein
the type information indicates that the piece of function information corresponds to the viewing history information, and
the trigger information is configured to cause provision of the viewing history information to the external server by the receiving device.
18. The transmission device according to claim 12 , wherein
the service signaling information is media presentation description (MPD) according to a Moving Picture Expert Group Dynamic Adaptive Streaming over HTTP (MPEG-DASH) standard and includes a Period element, an AdaptationSet element, and a Representation element;
the type information indicates that the piece of function information corresponds to the MPD; and
the trigger information is configured to cause acquirement of the MPD from the external server by the receiving device and acquirement of contents including broadband contents based on the MPD.
19. The transmission device according to claim 12 , wherein
the type information indicates that the piece of function information corresponds to the application control information, and
the trigger information is configured to cause acquirement of the application control information from the external server by the receiving device.
20. A transmission method of a transmission device, comprising:
generating, by the transmission device, trigger information corresponding to a piece of function information and including
version information of the trigger information,
type information specifying a type of the trigger information indicating that the piece of function information corresponds to one of service signaling information, emergency alerting information, electronic service guide information, viewing history information, and application control information, and
location information indicating a location of an external server corresponding to the piece of function information;
embedding the generated trigger information in video data or audio data; and
transmitting, by the transmission device, the video data or audio data having the generated trigger information embedded therein to a receiving device,
wherein the trigger information is configured to cause management of the trigger information by the receiving device based on the version information.