An automatic gain control arrangement is provided for an analog to digital (A/D) converter in a television signal processing system. A gain-controlled source of analog signals applies a video information signal to the input of an A/D converter. The A/D converter produces digitized video signal samples...http://www.google.fr/patents/US4434439?utm_source=gb-gplus-shareBrevet US4434439 - Digital television AGC arrangement
