Channel searching method and apparatus for receiving broadcast signal using the same

An apparatus for receiving a broadcast signal, the apparatus comprising:

• a radio frequency (RF) receiving unit receiving a broadcast signal and detecting signal strength of the broadcast signal;
• a demodulating unit setting a first channel in the broadcast signal and generating an automatic gain control signal for the first channel;
• and
• a controlling unit determining whether or not the signal strength and the automatic gain control signal satisfy preset requirements, respectively, and when satisfied, performing controlling to skip demodulation of the first channel.

An apparatus for receiving a broadcast signal, the apparatus comprising:

• a radio frequency (RF) receiving unit receiving a broadcast signal and detecting signal strength of the broadcast signal;
• a demodulating unit generating a plurality of automatic gain control signals for the plurality of respective channels included in the broadcast signal;
• and
• a controlling unit performing controlling to skip demodulation of at least a portion of the plurality of channels using the signal strength and the plurality of automatic control signals.