Circuit for automatic gamma balancing

Details Circuit for automatic gamma balancing Circuit for automatic gamma balancing

1975-09-16

1976-08-10

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 10, 178DIG16, H04N 953

Patent

active

039745210

ABSTRACT:
In gamma balancing several color camera channels, a test signal replaces the normal signal from the pick-up tube and the resulting gamma-corrected signals in the channels are compared. Differences noted in the comparison are used to adjust the gamma correction stages in all but one of the channels.

REFERENCES:
patent: 3272916 (1966-09-01), James et al.
patent: 3752905 (1973-08-01), Schneider
patent: 3919713 (1975-11-01), Nakamura

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