Noise immune infrared readout circuitry

Details Noise immune infrared readout circuitry Noise immune infrared readout circuitry

1984-12-20

1988-03-22

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250370, G01J 100, G01T 122

Patent

active

047330775

ABSTRACT:
A new technique, and output encoding circuits using that technique, are disclosed for interfacing between a semiconductor IR detector 23 and associated output electronics 24, 25, 26 which technique and circuits transfer a charge packet onto a sense capacitor 22 that previously stored a reset level signal. The resulting stepped signal change, or delta, in the voltage present on that capacitor 22 is employed as the output signal.

REFERENCES:
patent: 4225883 (1980-09-01), Van Atta et al.
patent: 4242706 (1980-12-01), McCormack et al.
patent: 4360732 (1982-11-01), Chapman et al.
patent: 4523326 (1985-06-01), Hewitt et al.

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