Color correction circuit

Details Color correction circuit Color correction circuit

1985-08-19

1987-09-15

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, 358 80, H04N 968

Patent

active

046943307

ABSTRACT:
A color correction circuit is disclosed, which includes three video signal lines for supplying red, green and blue signals, respectively, a first circuit for detecting a white color component, a circuit for applying the red, green and blue signals to the first detecting circuit, a second circuit for detecting a predetermined color component, a circuit for applying at least two signals of the red, green and blue signals to the second detecting circuit, a circuit for producing a difference signal between output signals of the first and second detecting circuits and a circuit for controlling at least one of the red, green and blue signals according to the difference signal.

REFERENCES:
patent: 4069432 (1978-01-01), Bazin
patent: 4261009 (1981-04-01), Tomimoto et al.
patent: 4355326 (1982-10-01), Lee
patent: 4356508 (1982-10-01), Okada

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