Brightness control circuit for a television receiver

Details Brightness control circuit for a television receiver Brightness control circuit for a television receiver

1986-12-23

1988-01-05

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 39, 358168, 358172, H04N 557, H04N 972, H04N 977

Patent

active

047179538

ABSTRACT:
In a television receiver, the brightness of a displayed image is controlled in response to a reference voltage having a magnitude related both to the magnitude of a voltage derived from a viewer adjustable brightness control, and to the magnitude of the DC level of color information signals during image blanking intervals.

REFERENCES:
patent: 3374310 (1968-03-01), Beers
patent: 3921205 (1975-11-01), Fujiwara et al.
patent: 4110790 (1978-08-01), Wheeler
patent: 4197557 (1980-04-01), Tuma et al.
patent: 4554577 (1985-11-01), Shanley et al.

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