Radiant energy – Infrared-to-visible imaging – Including means for scanning field of view
Patent
1997-02-07
1998-04-14
Glick, Edward J.
Radiant energy
Infrared-to-visible imaging
Including means for scanning field of view
25037008, H01L 27146, H01L 3100
Patent
active
057395314
ABSTRACT:
A signal processing in the element (SPRITE) thermal imaging system (20) is provided which has automatic gain control, level control, and delining. An array of SPRITE detectors (22) generate a plurality of analog signals which are proportional to the flux of infrared light received by each of the detectors (22). A digital scan converter (137) processes the analog signals and generates a resultant digital output (188) which contains digital image data for image production. A first plurality of sample-servo control loops (278, 280, 282, 284) provides automatic gain control using the digital output (188) and a second plurality of sample-servo control loops (286, 288, 290, 292) provides automatic level control using the digital output (188). A deliner is provided for normalizing differences which result from variations between detectors (22). The deliner normalizes the differences by utilizing one pair of the first and second sample-servo control loops as a reference pair (236) to provide gain and level references to the other pairs of the first (278, 280, 282) and second (286, 288, 290) sample-servo control loops.
REFERENCES:
patent: 4467201 (1984-08-01), Blackburn et al.
patent: 4868389 (1989-09-01), Moore
patent: 4883962 (1989-11-01), Elliott
Denson-Low W. K.
Glick Edward J.
HE Holdings Inc.
Schubert W. C.
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