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:
Jan. 07, 1997
Filed:
Apr. 12, 1994
David M Masarik, Laguna Beach, CA (US);
Robert S Hayes, Lawndale, CA (US);
Frank N Cheung, Agoura, CA (US);
Robert W Klatt, Rancho Palos Verdes, CA (US);
Hughes Electronics, Los Angeles, CA (US);
Abstract
An analog signal processor for use with an array of uncooled detectors. Each detector has an amplifier associated therewith and each amplifier provides gain. A first circuit (212, 294, 300, 220) is included for compensating for a DC offset of each detector/amplifier pair of the array. A second circuit (250, 294, 300) corrects for variations in the sensitivity of each detector/amplifier pair. As a result, the outputs each of the detector/amplifier pairs in response to a common input signal are equalized. In a specific implementation, additional circuits are included providing global automatic DC level control across the array (270, 280, 294, 300), global automatic gain control across the array (250, 262, 294, 300) and frame-to-frame offset adjustment (212, 230).