Ambient light contrast and color control circuit

Details Ambient light contrast and color control circuit Ambient light contrast and color control circuit

1976-05-26

1978-05-16

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, 358 39, 358161, H04N 9535

Patent

active

040902161

ABSTRACT:
Contrast and color levels in a color television receiver are automatically varied with ambient light variations by an RC circuit AC coupling an ambient light responsive device to a luminance signal channel and DC coupling the ambient light responsive device to a DC potential source and a chrominance signal channel.

REFERENCES:
patent: 3755619 (1973-08-01), Lovezy et al.
patent: 3814852 (1974-06-01), Mierzwinski
patent: 3953883 (1976-04-01), Grewe
patent: 3983575 (1976-09-01), Nagai et al.

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