Combined video processing circuit and image enhancer

Details Combined video processing circuit and image enhancer Combined video processing circuit and image enhancer

1989-10-24

1990-11-13

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 28, 358 37, H04N 964

Patent

active

049705830

ABSTRACT:
A circuit for splitting a video signal into a chroma signal and a luminance signal comprises a resistor and a bandpass filter connected to the resistor. The bandpass filter passes a frequency component at the frequency of the color pilot burst. A chroma switch receives the frequency component passed by the bandpass filter, and is provided with a feedback transistor for reducing the input impedance of the chroma switch.

REFERENCES:
patent: 3877067 (1975-04-01), Furrey
patent: 4030121 (1977-06-01), Faroudja
patent: 4402006 (1983-08-01), Karlock
patent: 4533938 (1985-08-01), Hurst
patent: 4604646 (1986-08-01), Karlock
patent: 4814859 (1989-03-01), Kimura et al.

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