Broadcast receiver and channel searching method using the same
AssigneeLG Innotek Co., Ltd.
InventorHyun Woo Lim
Life of this patent
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Abstract
Disclosed is a broadcast receiver. The broadcast receiver comprises a signal receiver for tuning and outputting a Q channel of a digital broadcasting signal, a demodulator for demodulating a signal of the received channel and checking a lock state M or an unlock state of a gain control signal and a timing control signal of the channel, and a demodulation controller for controlling o an operation of the demodulator and detecting a lock state of the channel based on the lock state of the gain control signal and the timing control signal.
Claims20
A broadcast receiver comprising:
- a signal receiver for tuning and outputting a channel of a digital broadcasting signal;
- a demodulator for demodulating a signal of the received channel and checking a lock state or an unlock state of a gain control signal and a timing control signal of the channel;
- and
- a demodulation controller for controlling an operation of the demodulator and detecting a lock state of the channel based on the lock state of the gain control signal and the timing control signal.
A broadcast receiver comprising:
- a signal receiver for tuning a signal of a digital cable broadcasting channel and converting the signal into an intermediate frequency;
- a demodulator for demodulating a signal of the channel and checking a lock state of the channel by using AGC and TRL signals of the received channel;
- a storage unit for storing channel information;
- and
- a demodulation controller for storing channel information, which is generated by the demodulator based on the lock state of the channel, in the storage unit.
A channel search method of a broadcast receiver, the method comprising the steps of:
- tuning a channel of a digital broadcasting signal;
- demodulating a signal of the channel;
- checking a lock state or an unlock state of the channel according to signal intensity of the tuned channel and signal timing;
- storing one channel of a digital broadcasting format when the channel is in a lock state;
- and
- skipping the channel and searching for a subsequent channel when the channel is not in the lock state.
Dependencies are inferred from the claim text.