Patent ID: 8451376

Claim:
Automatic gain control system for analog television signals, comprising: demodulator circuitry configured to receive a modulated analog television (ATV) signal and to output a demodulated ATV signal; amplitude detector circuitry configured to measure amplitude levels for periodic components within a plurality of horizontal lines for the demodulated ATV signal and to output amplitude level indication signals; feed-forward error correction circuitry configured to compare the amplitude level indication signals to a target feed-forward amplitude level and to generate feed-forward error signals; feed-forward amplitude correction circuitry configured to receive the feed-forward error signals and to generate feed-forward amplitude correction signals; delay circuitry configured to receive the demodulated ATV signal and to output a delayed version of the demodulated ATV signal after a delay amount; and amplifier circuitry configured to receive the delayed version of the demodulated ATV signal, to receive the feed-forward amplitude correction signals, and to amplify the delayed version of the demodulated ATV signal based upon the feed-forward amplitude correction signals such that an amplitude level before the periodic component within each horizontal line is adjusted based upon the periodic component within that horizontal line.