Patent ID: 8558955

Claim:
A system to provide automatic compensation for frequency attenuation of a video signal transmitted over a cable, comprising: an equalizer that receives a video signal that was transmitted over a cable, provides compensation for frequency attenuation that occurred during the transmission over the cable, and outputs a compensated video signal, wherein the equalizer includes a high band equalizer that compensates for high frequency attenuation caused by the cable; a low band equalizer that compensates for low frequency attenuation caused by the cable; and a DC gain controller that fine tunes DC gain of the equalizer; and a compensation controller that automatically adjusts the compensation provided by the equalizer based on comparisons of one or more portions of the compensated video signal to one or more reference voltage levels; wherein the compensation controller automatically adjusts the compensation provided by the equalizer by automatically controlling the high band equalizer, the low band equalizer and the DC gain controller; and wherein the compensation controller locks the compensation provided by the high band equalizer, the low band equalizer and the DC gain controller in response to detecting a lock condition.