Patent ID: 8619196
Filing Date: 2013-12-31
Classification: H03G,H04B,H04N

Abstract:
1. A television receiver equipped with a signal-power increasing/decreasing section between an antenna and a tuner, the signal-power increasing/decreasing section being configured to amplify and attenuate a signal power to be input to the tuner, the television receiver comprising: a reception state detecting section that detects AGC, C/N, and BER based on an output signal from the tuner; and a control section that determines, based on a detection result of the reception state detecting section, if a signal of a corresponding channel can be normally received, and performs, based on a determination result, a feedback control for amplifying or attenuating the signal power in the signal-power increasing/decreasing section, wherein the signal-power increasing/decreasing section includes a switch section that switches between an amplifier and an attenuator, and said control section further comprises a counter section for counting a number of receivable channels on each of an attenuator side and an amplifier side in a channel search, where said counter section counts the number of receivable channels on each of the attenuator side and the amplifier side in a channel search based on reception state information detected with the reception state detecting section, wherein if each channel is normally receivable is determined based on the reception state information, if a channel is determined to be normally receivable, the counter on one of the attenuator side and the amplifier side is incremented, and upon termination of the channel search, values of the counters on both sides are compared so that the switch section is fixed to the side on which more channels can be normally received.