Color temperature control circuit

Details Color temperature control circuit Color temperature control circuit

1981-02-04

1982-08-24

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 65, H04N 9535

Patent

active

043463991

ABSTRACT:
A color temperature control circuit for a color television receiver having a color decoder circuit supplied with a composite video signal and for generating red, green and blue primary color signals at its output terminals, a video output circuit for amplifying the three primary color signals, a tri-color cathode ray tube having three control electrodes adapted to receive the three primary color signals from the video output circuit, and a circuit arrangement connected between the color decoder circuit and the video output circuit, in which the circuit arrangement has the same transfer function for all three primary color signals when the input signals are below a predetermined level and a transfer function for the blue primary color signal larger than that for the red primary color signal when input signal levels of the blue and red primary color signals are larger than the predetermined level.

REFERENCES:
patent: 4127868 (1978-11-01), Nagaoka et al.
"Switching circuit gives whiter white and truer colors on TV screen", Electronics, vol. 50, No. 17, Aug. 18, 1977, pp. 7E-8E.

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