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:
Jun. 28, 2011
Filed:
Oct. 24, 2007
Applicant:
Vladimir Koifman, Rishon-Lezion, IL;
Inventor:
Vladimir Koifman, Rishon-Lezion, IL;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/235 (2006.01); H04N 5/335 (2006.01); H04N 5/228 (2006.01); H04N 3/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for accessing a pixel, the method includes: providing a fixed reference current to a readout circuit that is coupled to a pixel, wherein the fixed reference current is indifferent to changes in a pixel output current drained by the pixel; wherein a value of the pixel output current is responsive to light impinging on the pixel during an integration period; and sampling a difference signal that is responsive to a different between the fixed reference current and the pixel output current while providing the fixed reference current to the readout circuit.