Patent ID: 8125572

Claim:
A system for configuring a video circuit into a relatively low power consumption mode or a relatively high power consumption mode, comprising: an input signal detection circuit, coupled to an input of the video circuit, the input signal detection circuit receives an input video signal from the input of the video circuit and generates a first signal indicative of whether the input video signal is present at the input of said video circuit; an output load detection circuit, coupled to an output of the video circuit, the output load detection circuit receives an output video signal from the output of the video circuit and generates a second signal indicative of whether a load is connected to the output of said video circuit; and a control device, coupled to the input signal detection circuit and the output load detection circuit, the control device generates a third signal responsive to said first and second signals; wherein said third signal controls whether said video circuit is in said relatively low power consumption mode or in said relatively high power consumption mode; wherein the input signal detection circuit and the output load detection circuit are distinct from each other.