Patent · US Active

Method and pixel for performing correlated double sampling

US7973845B2 · kind B2 · utility

0Cited by

13References

20Claims

0Family size

Assignee

ON Semiconductoc Trading, Ltd. · BM

Inventors

Bart Dierickx · Mortsel, BE
Jan Bogaerts · Sint-Katelijne-Waver, BE

Key dates

Filing date	May 25, 2005
Grant date	Jul 5, 2011
Priority date	—
Expiry date	Sep 30, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04N25/771
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method and apparatus for performing correlated double sampling to remove low frequency noise. The method and apparatus includes an active pixel of an array of active pixels comprising a sensor circuit for collecting radiation induced charges and transducing them to a measurement signal corresponding to the amount of charge collected, two memory elements for storing the measurement signal at the beginning and the end of a first integration period respectively, and at least one further memory element for storing at least the measurement signal at the beginning of a next integration period.

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