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:
Jul. 13, 1999
Filed:
Feb. 06, 1996
Applicant:
Inventors:
R Daniel McGrath, Andover, MA (US);
Vincent S Clark, Arlington, MA (US);
Lisa G Dron, Lexington, MA (US);
Adolphus Kearney, Billerica, MA (US);
James R Toker, Cambridge, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382312 ; 257291 ; 257292 ; 25037001 ;
Abstract
An image sensing device comprising active pixels is disclosed, each pixel having a charge accumulation region for collecting charges generated by a photosensitive element such as a photodiode. Fixed pattern noise is minimized by utilizing a reference current to reset the pixels and to generate an output current signal.