Receiving device, receiving method, signal processing device, and signal processing method
The present technology relates to a receiving device, a receiving method, a signal processing device, and a signal processing method that enable presentation of emergency alert information more appropriately. Provided is a receiving device including: a receiving part that receives a broadcast signal; and a processing part that processes the broadcast signal that has been received, in which the receiving part instructs the processing part in a standby state to start on the basis of emergency alert start information included in the broadcast signal that has been received, and in a case of being instructed by the receiving part to start, the processing part controls presentation of emergency alert information on the basis of signaling including the emergency alert information acquired from the broadcast signal that has been received, and receiving setting information related to a receiving setting of the emergency alert information set by a user. The present technology can be applied to, for example, a television receiver.
1. A receiving device comprising:
receive circuitry configured to receive a broadcast signal; and
processing circuitry configured to:
process the broadcast signal that has been received,
when in a standby state, enter an active state on a basis of emergency alert wakeup information included in the broadcast signal that has been received, and
in the active state, control presentation of emergency alert information on a basis of signaling acquired from the broadcast signal that has been received, and setting information related to the emergency alert information, the signaling including information associated with the emergency alert information, including identification of the emergency alert information, and an indication that the emergency alert information is new, updated, or cancelled,
wherein:
the setting information includes at least one of a setting related to an audience, a type, a priority, an event type, a language, or a relevant area of the emergency alert information, and
the processing circuitry is configured to cause the emergency alert information to be presented if the information associated with the emergency alert information and the setting information match.
2. The receiving device according to claim 1 , wherein the processing circuitry is configured to:
acquire history information associated with the emergency alert information received in the past, and
control presentation of the emergency alert information on a basis of the signaling, the setting information, and the history information.
3. The receiving device according to claim 2 , wherein:
the receiving device has a first mode corresponding to operation at normal start, and a second mode corresponding to operation at emergency alert, and
the processing circuitry is configured to control the presentation of the emergency alert information on a basis of the signaling, the receiving setting information, and the history information, in a case of the second mode.
4. The receiving device according to claim 2 , wherein the history information includes at least a state and a display content of the emergency alert information received in the past.
5. The receiving device according to claim 2 , further comprising recording circuitry that records the setting information and the history information, wherein the processing circuitry is configured to:
compare the information associated with the emergency alert information and the recorded history information, and
if the comparison result is a match, cause the emergency alert information to be presented.
6. The receiving device according to claim 2 , wherein the history information includes at least a state or a display content of the emergency alert information received in the past.
7. The receiving device according to claim 1 , wherein the processing circuitry is configured to:
identify a series of the emergency alert information on a basis of identification information included in the signaling, and
control the presentation of the emergency alert information for the identified series.
8. The receiving device according to claim 1 , wherein the emergency alert wakeup information is included in a frame of a physical layer, and the signaling is included in an upper layer.
9. The receiving device according to claim 1 comprising a display and a speaker.
10. The receiving device according to claim 1 , wherein the setting information is settable by a user.
11. The receiving device according to claim 1 , wherein the signaling includes text of the emergency alert information.
12. The receiving device according to claim 1 , wherein:
the signaling includes access information for obtaining a media resource associated with the emergency alert information, and
the processing circuitry is configured to obtain and control presentation of the media resource.
13. The receiving device according to claim 1 , wherein the processing circuitry is configured to control presentation of the emergency alert information based on a change in the wakeup information.
14. The receiving device according to claim 1 , wherein power consumption of the receiving device in the standby state is suppressed.
15. A method of a receiving device comprising:
receiving a broadcast signal;
processing the broadcast signal that has been received;
when in a standby state, entering an active state on a basis of emergency alert wakeup information included in the broadcast signal that has been received;
in the active state, controlling presentation of emergency alert information on a basis of signaling acquired from the broadcast signal that has been received, and setting information related to the emergency alert information, the signaling including information associated with the emergency alert information, including identification of the emergency alert information, and an indication that the emergency alert information is new, updated, or cancelled, wherein the setting information includes at least one of a setting related to an audience, a type, a priority, an event type, a language, or a relevant area of the emergency alert information; and
causing the emergency alert information to be presented if the information associated with the emergency alert information and the setting information match.
16. The method according to claim 15 comprising acquiring history information associated with the emergency alert information received in the past, wherein controlling the presentation of the emergency alert information includes controlling the presentation of the emergency alert information on a basis of the signaling, the receiving setting information, and the history information.
17. The method according to claim 16 , further comprising:
recording the setting information and the history information,
comparing information associated with the emergency alert information and the recorded history information, and
if the comparison result is a match, causing the emergency alert information to be presented.
18. The method according to claim 15 , wherein:
the signaling includes identification information identifying a series of emergency alert information, and
controlling presentation of the emergency alert information includes controlling presentation for each series that has been identified.
19. The method according to claim 15 , wherein the emergency alert wakeup information is included in a frame of a physical layer, and the signaling is included in an upper layer.
20. The method according to claim 15 , wherein power consumption of the receiving device in the standby state is suppressed.