Modulated fleshtone and tint correction circuitry

Details Modulated fleshtone and tint correction circuitry Modulated fleshtone and tint correction circuitry

1975-06-09

1977-10-04

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

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H04N 9535

Patent

active

040527352

ABSTRACT:
A fleshtone and tint correction detector DC coupled to at least two of the first, second, and third demodulator stages of a color television receiver provides a control signal in response to a shift in differential potential output from the demodulator stages to effect a shift in phase angle of reference signals applied in the demodulators whereby fleshtone and other color errors are reduced with a minimum deleterious effect on other colors.

REFERENCES:
patent: 3663744 (1972-05-01), Harwood
patent: 3668306 (1972-06-01), Hansen et al.
patent: 3882534 (1975-05-01), Srivastava
patent: 3916438 (1975-10-01), Portoulas
patent: 3950781 (1976-04-01), Miyamoto

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