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:
Sep. 15, 1987
Filed:
Dec. 24, 1985
Hans R Bucher, Boulder, CO (US);
Donald E Hodd, Niwot, CO (US);
Xedar Corporation, Boulder, CO (US);
Abstract
A system and method are disclosed for pyroelectric camera signal processing, which processing includes compensating for the effects of pedestal level variations. The pyroelectric videcon tube generates an electrical output signal component indicative of target signal information based upon the sensed thermal energy emitted from the target, and also generates a pedestal component around which the target signal information is centered. A line-by-line DC restorer is provided to re-establish the DC level of the video signal, with the DC level of the restorer being automatically controlled to thereby compensate for variations in pedestal levels due to drift, tube aging, and/or generated by shutter to scene temperature differences.