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:
Apr. 17, 2007
Filed:
May. 18, 2005
Applicant:
Alexander Krymski, La Crescenta, CA (US);
Inventor:
Alexander Krymski, La Crescenta, CA (US);
Assignee:
Alexander Krymski D. B. A Alexima, Pasadena, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 27/00 (2006.01); H01J 40/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pixel circuit for an image sensor uses a common reset transistor for resetting both of a photodiode node and a memory node. Respective transfer gates connect the common reset transistor to the photodiode node and to the memory node, and connect photodiode node and the memory node to each other. A source follower enabled with a row select gate provides a readout signal from the memory node. The use of the common reset transistor and the operational timing of the circuit elements improves fixed pattern noise arising from transistor feedthroughs in the pixel circuit.