Patent ID: 7501919
Filing Date: 2009-03-10
Classification: H03J,H04B

Abstract:
1. A signal communication system, coupled to a signal source that receives a broadcast spectrum from an electrically or optically conductive medium, to output a filtered representation of a broadcast-frequency video signal corresponding to a selected channel of a plurality of channels of the broadcast spectrum, the system comprising: frequency-selective filter circuitry, coupled to the signal source, to receive the broadcast-frequency video signal and to output the filtered representation of the broadcast-frequency video signal, the frequency-selective filter circuitry includes: control signal generator circuitry, coupled to the frequency-selective filter circuitry, to generate the control signal having a voltage amplitude which is associated with the selected channel, the control signal generator circuitry includes: wherein the control signal generator circuitry determines whether the feedback signal is different from the control signal having the voltage amplitude which is associated with the selected channel, and when the feedback signal is different from the voltage amplitude of the control signal, the control signal generator circuitry responsively adjusts the amplitude of the voltage of the control signal.