US Patent 7326904 In-pixel kTC noise suppression using circuit techniques

Patent 7326904 was granted and assigned to Micron Technology on February, 2008 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Micron Technology

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7326904

Patent Inventor Names

Eric R. Fossum0

Date of Patent

February 5, 2008

Patent Application Number

11495546

Date Filed

July 31, 2006

Patent Primary Examiner

‌

Kevin Pyo

Patent abstract

A circuit and method for reducing kTC noise in CMOS imagers while minimizing power dissipation is disclosed. Correlated double sampling (CDS) is performed within each pixel such that the reset voltage and the integration voltage are sampled and stored within the pixel until the voltages are forwarded to a differential amplifier for subtraction.

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