Amplitude compression and frequency compensation system

Details Amplitude compression and frequency compensation system Amplitude compression and frequency compensation system

1979-05-03

1981-11-24

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

307556, 328171, 330145, 330277, 333 28R, 358166, H04N 533

Patent

active

043027741

ABSTRACT:
A system is disclosed for frequency compensation and amplitude compression of signals from a scene having targets which radiate infrared energy. The system uses at least two combinations, where each combination consists of an operational amplifier and a variable resistance element. These combinations are electrically coupled to each other. A circuit connected to one of the amplifiers provides high frequency compensation for radiated energy by small targets in the infrared scene. The system also utilizes a reference source which is coupled to the input of another of the amplifiers.

REFERENCES:
patent: 3778722 (1973-12-01), Stein
patent: 3898573 (1975-08-01), Sherman
patent: 3904975 (1975-09-01), Satoh
patent: 3967209 (1976-06-01), Skoures et al.
patent: 4038688 (1977-07-01), Chow et al.
patent: 4085340 (1978-04-01), Salesky et al.
patent: 4091414 (1978-05-01), Chow
patent: 4121183 (1978-10-01), Murphy
patent: 4181896 (1980-01-01), Schroder
Pogge-Simulate Analog Circuits With Digital Filtering Circuits EDN-Oct. 5, 1976, vol. 21, No. 18, pp. 93-97.

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