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:
Dec. 06, 1994
Filed:
Mar. 04, 1993
Peide Jeng, Tucson, AZ (US);
Photometrics, Ltd., Tucson, AZ (US);
Abstract
A transverse filler for use in a CCD camera eliminates KTC noise even at very fast pixel rates with relatively relaxed constraints on component accuracy and timing control, The circuit includes summation, divider and subtraction circuits which add the plural outputs of a tapped delay line to which a video signal is applied and generate average KTC noise and KTC noise plus signal representations. The output of the circuits is applied to the input of an capacitor and the output of the capacitor is connected to an electronic switch and to a Sample-and-Hold amplifier. The capacitor is operative to subtract the average KTC noise from the average KTC plus Video signal, The circuit is able to run on-board binning and does not have pixel feedthrough problems.