Bolometer infrared image sensor with an improved compensation ci

Details Bolometer infrared image sensor with an improved compensation ci Bolometer infrared image sensor with an improved compensation ci

1997-04-21

2000-01-04

Hannaher, Constantine

Radiant energy

Calibration or standardization methods

250332, G12B 1300, G01J 520

Patent

active

060112573

ABSTRACT:
An image sensor includes a plurality of pixels, each of which includes a bolometer infrared image sensor; a feed back circuit connected to the infrared image sensor for controlling at a constant value a current flowing through each the pixels of the infrared image sensor and for generating output voltage signals for each the pixels by apply the current controlled constant to each the pixels; detecting circuit connected to the feed back circuit for detecting variations in the resistance of each the pixels as fixed pattern noises based upon the output voltage signals from the feed back circuit to generate compensation signals which are to be fed back to the feed back circuit for feed-back control of the current flowing through the infrared image sensor.

REFERENCES:
patent: 5420421 (1995-05-01), Lindgren et al.
patent: 5608213 (1997-03-01), Punkus et al.
patent: 5631466 (1997-05-01), Botti et al.
patent: 5693940 (1997-12-01), Botti et al.
patent: 5811808 (1998-09-01), Cannata et al.

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