Television receiver automatic color temperature adjusting system

Details Television receiver automatic color temperature adjusting system Television receiver automatic color temperature adjusting system

1987-05-06

1988-05-31

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 65, 358 74, 358243, H04N 973, H04N 916

Patent

active

047484977

ABSTRACT:
An automatic color temperature adjusting system for a television receiver which is capable of eliminating an unstable picture condition during the turn on transition period. The automatic color temperature adjusting system has a gain control circuit associated with a feedback loop for controlling the amplifier characteristics of an amplifier in each color channel. The gain control circuit is responsive to the turning on of the power supply to lower the gain of each amplifier to a given level. The gain control circuit adjusts the gain of the amplifier to gradually increase the gain to reach a normal gain level after a given period of time.

REFERENCES:
patent: 4340904 (1982-07-01), Wingrove
patent: 4342048 (1982-07-01), Falater et al.
patent: 4450476 (1984-05-01), Tallant, II
patent: 4506292 (1985-03-01), Newton et al.
patent: 4587566 (1986-05-01), Hinn
patent: 4660093 (1987-04-01), Craig et al.
patent: 4692793 (1987-09-01), Tamura et al.

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