Color television receiver

Details Color television receiver Color television receiver

1976-11-24

1978-07-18

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 10, H04N 9535, H04N 962

Patent

active

041019288

ABSTRACT:
A color television receiver hue-control system that produces two sets of color-generating signals, one set being differentially controllable and the other not, to produce two kinds of reference color areas on the screen of a color cathode ray tube to be visible simultaneously. The hue of the first reference color in a first area is fixed, and the hue of the second reference color in an adjacent area is varied by the same hue adjustment control as that used to vary the hue in the reproduced television picture. The hue adjustment is achieved by adjusting the control to produce differential modification of the amplitude of one set of color-generating signals, either by direct amplitude modification or by phase shifting a demodulating carrier if the set of color-generating signals is modulated on a carrier, to produce coincidence of the hue of the two reference colors.

REFERENCES:
patent: 2854505 (1958-09-01), Davis
patent: 3763310 (1973-10-01), Sagishima et al.

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