Method of processing broadcast signal associated with emergency alert system in terrestrial broadcasting and broadcast receiver for the same
A broadcast signal associated with an emergency alert system in terrestrial broadcasting, a processing method thereof, and a broadcast receiver for the same are disclosed, by which information on a channel for carrying emergency alert news can be completely prevented from being overlapped with information on other general channels in a terrestrial broadcasting environment.
1. A method of receiving a digital broadcasting signal, the method comprising:
receiving the digital broadcasting signal including an emergency alert table,
wherein the emergency alert table includes a descriptor, and the descriptor includes frequency information of an emergency alert channel and program number information of the emergency alert channel; wherein the emergency alert table further includes details_major_channel_number, details_minor_channel_number, exception_major_channel_number, and exception_minor_channel_number;
parsing the frequency information and the program number information from the descriptor of the emergency alert table; and
tuning to the emergency alert channel in accordance with the parsed frequency information and the program number information.
2. The method of claim 1 , wherein the descriptor further includes major channel number information of the emergency alert channel and minor channel number information of the emergency alert channel.
3. The method of claim 1 , wherein the descriptor further includes channel transport stream ID information of the emergency alert channel.
4. The method of claim 1 , wherein the frequency information identifies a carrier frequency band of the emergency alert channel.
5. A digital broadcast receiver comprising:
a tuner configured to receive the digital broadcasting signal including an emergency alert table,
wherein the emergency alert table includes a descriptor, and the descriptor includes frequency information of an emergency alert channel and program number information of the emergency alert channel; wherein the emergency alert table further includes details_major_channel_number, details_minor_channel_number, exception_major_channel_number, and exception_minor_channel_number;
a decoder configured to parse the frequency information and the program number information from the descriptor of the emergency alert table; and
a controller configured to control the tuner to tune to the emergency alert channel in accordance with the parsed frequency information and the program number information.
6. The digital broadcast receiver of claim 5 , wherein the descriptor further includes major channel number information of the emergency alert channel and minor channel number information of the emergency alert channel.
7. The digital broadcast receiver of claim 5 , wherein the descriptor further includes channel transport stream ID information of the emergency alert channel.
8. The digital broadcast receiver of claim 5 , wherein the frequency information identifies a carrier frequency band of the emergency alert channel.