The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 1994
Filed:
Dec. 10, 1992
Kevin L Soch, Pauma Valley, CA (US);
Scott Evans, Encinitas, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
Individual processing cells are provided in close proximity to each detector element in an infrared detector array. Signals generated by the detectors in response to incident infrared radiation are converted to amplified voltages by their respective processing cells, with all of the cells sampling and holding their respective amplified signals simultaneously. The signals held by the various cells are then read out serially during the next cycle of alternating exposures and shadings by a rotating chopper. The amplified signals of all the cells are simultaneously reset at the beginning of each chopper cycle. The simultaneous sampling and holding allows all of the held pixel signals to represent equal periods of exposure or shading, while the local voltage conversion and signal amplification at each processing cell substantially improves the final signal-to-noise ratio.