Patent ID: 7688385

Claim:
A video signal processing apparatus comprising: a front stage unit configured to process a first video signal; and a rear stage unit configured process a progressive signal output from the front stage unit, wherein the front stage unit has a first control circuit which determines the image characteristic of the first video signal, and outputs a first image processing control signal determining which of dynamic image adaptive processing and static image adaptive processing is to be performed for the first video signal; and a first video signal processing circuit which provides a progressive signal that is formed by performing the dynamic image adaptive processing or static image adaptive processing for the first video signal in response to the first image processing control signal, the rear stage unit has a second control circuit which determines the image characteristic of the progressive signal as information to generate an interpolation frame signal for doubling the frame frequency of the progressive signal from the first video signal processing circuit, and outputs a second image processing control signal determining which of dynamic image adaptive processing and static image adaptive processing is to be performed for the progressive signal; and a second video signal processing circuit which provides the interpolation frame signal that is formed by performing the dynamic image adaptive processing or static image adaptive processing for the progressive signal in response to the second image processing control signal, and provides a frame rate conversion output signal by using the interpolation frame signal and progressive signal, and an arithmetic circuit is connected between the front stage unit and rear stage unit, the arithmetic circuit providing a transmission control signal, which controls the second image processing control signal not to shift to an output state of dynamic image adaptive processing, and corrects to shift to an output state of static image adaptive processing, when the first image processing control signal indicates static image adaptive processing, and releases the control when the first image processing control signal indicates dynamic image adaptive processing, the transmission control signal being applied to the second control circuit.