Patent · US Active

Active pixel sensor with reduced fixed pattern noise

US7973843B2 · kind B2 · utility

1Cited by

21References

4Claims

0Family size

Assignee

Aptina Imaging Corporation · KY

Inventors

Anders Andersson · Vaggeryd, SE
Sandor L. Barna · Los Altos, US

Key dates

Filing date	Mar 27, 2009
Grant date	Jul 5, 2011
Priority date	—
Expiry date	Jul 25, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH10F39/1865
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An image sensor includes pixels each of which is designed to transfer charge, accumulated in a photoactive region of the pixel during a first period, through a second active region of the pixel to a power supply node, and to transfer charge, accumulated in the photoactive region during a second period, through the second active region to a sense node in the pixel. Passing charge through the second active region prior to transferring it either to the power supply node or the sense node can help reduce fixed pattern noise. The image sensor can be operated in snap-shot mode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.