Automatic gain control circuit

Details Automatic gain control circuit Automatic gain control circuit

1974-06-03

1976-07-06

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

325409, 330 29, H04N 9535

Patent

active

039685160

ABSTRACT:
An automatic chrominance gain control circuit for a color television receiver distinguishes between lower frequency chrominance variations (large color objects) and higher frequency chrominance variations (small objects) to minimize gain control for large color objects and to emphasize gain control for highly saturated contrasting colors in small objects across the picture field.

REFERENCES:
patent: 2802939 (1957-08-01), Klehfoth
patent: 3141064 (1964-07-01), Macovski
patent: 3624296 (1971-11-01), Slavik et al.
patent: 3708613 (1973-01-01), Nakabe et al.
patent: 3735037 (1973-05-01), Baker et al.
patent: 3763491 (1973-10-01), Ishman

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