Patent ID: 6738098
Filing Date: 2004-05-18
Classification: H04N

Abstract:
An apparatus for controlling a DC level of a video signal within a video signal receiver, said apparatus comprising:a first amplifier for amplifying the video signal to produce a first amplified video signal; a first DC level control coupled to the first amplifier and responsive to a first control signal for controlling a DC level of the first amplified video signal control means for providing the first control signal; and a second amplifier for amplifying the first amplified video signal to produce a second amplified video signal, wherein the second amplifier comprises: an input buffer for producing a buffered signal in response to the first amplified video signal; a non-inverting amplifier coupled to said input buffer for amplifying the buffered signal to produce the second amplified video signal; and a second DC level control circuit coupled to said non-inverting amplifier and responsive to a second control signal generated by the control means for controlling a DC level of the second amplified video signal for aligning the second amplified video signal with other signals within the receiver.