Wide band chrominance demodulator with color noise reduction fun

Details Wide band chrominance demodulator with color noise reduction fun Wide band chrominance demodulator with color noise reduction fun

1982-01-07

1983-11-22

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

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358 36, H04N 537

Patent

active

044172702

ABSTRACT:
A video circuit is responsive to a TV radio wave with a given field strength. The video circuit provides a composite color video signal contained in the TV radio wave and generates a control signal corresponding to the field strength of TV radio wave. A signal separator is coupled to the video circuit. The signal separator separates I and Q signals from the composite color video signal. A color decoder is coupled to the signal separator and responsive to the I and Q signals. The color decoder generates color difference signals. The chrominance demodulator includes an I signal processor coupled to the video circuit, signal separator and color decoder. The chrominance demodulator composes a controlled I signal from the control signal and I signal and provides the color decoder with the controlled I signal. The frequency response characteristic between the I signal and controlled I signal is changed according to the control signal.

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