Color difference compressor

Details Color difference compressor Color difference compressor

1990-02-15

1991-12-31

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, 358174, H04N 9077, H04N 968

Patent

active

050776029

ABSTRACT:
A color difference compressor operating in a color difference baseband system compensates for illumination overload in the output of a color sensor by switching a pair of multiplexers between the active video portion of the color difference signals and a predetermined blanking level. The output signal from the sensor is separated into three colors by a sample/hold circuit prior to generations of the color difference signals and a signal overload in any one of the three colors triggers an overload control signal that switches the multiplexers.

REFERENCES:
patent: 4069432 (1978-01-01), Bazin
patent: 4754321 (1988-06-01), Srivastava
patent: 4754323 (1988-06-01), Kaji
patent: 4814861 (1989-03-01), Hieda
patent: 4816917 (1989-03-01), Yamamoto et al.
patent: 4821100 (1989-04-01), Yamamoto
patent: 4862251 (1989-08-01), Belmares-Sarabia
patent: 4962417 (1990-10-01), Schultz

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