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:
Oct. 25, 1977
Filed:
Aug. 26, 1976
Paul Kessler Weimer, Princeton, NJ (US);
RCA Corporation, New York, NY (US);
Abstract
During readout, the signals induced on the columns of a charge transfer array cause currents to flow through respective conduction paths of field effect transistors connected to the columns. The threshold voltage V.sub.th of each transistor is compensated for prior to readout by establishing the gate electrode thereof at a quiescent gate bias level V.sub.c +V.sub.th, where V.sub.c is the quiescent voltage at the source electrode of that transistor. The effects of dark current or other fixed signal level it is desired to discriminate against associated with the respective columns of the array, also may be compensated for by reducing the quiescent bias level on the gate electrode by an amount proportional thereto.