Digital signal processing system for removing DC bias in the out

Details Digital signal processing system for removing DC bias in the out Digital signal processing system for removing DC bias in the out

1994-04-12

1996-06-18

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250332, 348165, G01J 506

Patent

active

055280358

ABSTRACT:
A digital signal processing system (100) removes DC bias in the output of a pyroelectric detector and similar types of detectors by adding together a first output signal which is inverted and a second output signal which is not inverted. The system (100) also removes offsets in the detector signal introduced by electronic circuits (readouts, amplifiers, drivers, etc.) between the detector and the system (100).

REFERENCES:
patent: 4705945 (1987-11-01), Worcester
patent: 4795904 (1989-01-01), Richards

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