Gamma correction circuit

Details Gamma correction circuit Gamma correction circuit

1992-04-30

1993-11-02

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307263, 307268, 307494, H03K 501, H03K 512

Patent

active

052586588

ABSTRACT:
A gamma correction circuit including a differential amplifier for generating a current which decreases as an input voltage increases; a current control circuit for generating a current which is zero when the input voltage is below a first set value, increases as the input voltage increases when the input voltage is in a range from the first set value and a second set value, and becomes constant when the input value exceeds the second set value; and a circuit for generating a voltage proportional to a sum of the above-mentioned currents.

REFERENCES:
patent: 5136184 (1992-08-01), Deevy
patent: 5177374 (1993-01-01), Carpenter et al.
patent: 5189313 (1993-02-01), Garuts

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