Automatic gain control

Details Automatic gain control Automatic gain control

2006-02-21

2006-02-21

Miller, John (Department: 2614)

Television

Receiver circuitry

Television receiver adapted to receive radio broadcast or in...

C348S731000, C348S678000, C348S738000

Reexamination Certificate

active

07002638

ABSTRACT:
In a method of automatic gain control for both TV and FM radio signals, the TV and FM radio signals are controllably amplified (AGC-AMP) to obtain amplifier output signals, the amplifier output signals are tuner processed (F, MIX, IF-AMP) to obtain tuner output signals, the tuner output signals are applied as control signals (T-AGC) to the controllable amplifier (AGC-AMP), a bandwidth of a thus formed AGC loop being wide enough for a TV channel, and the tuner output signals are narrow-band filtered (CF) to obtain narrow-band filtered signals having a bandwidth substantially corresponding to a bandwidth of an FM radio channel.

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