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:
Jan. 05, 2010
Filed:
Apr. 04, 2007
Applicant:
Ali E. Zadeh, Sierra Madre, CA (US);
Inventor:
Ali E. Zadeh, Sierra Madre, CA (US);
Assignee:
Aptina Imaging Corporation, George Town, KY;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 27/00 (2006.01); H01J 40/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
The various embodiments disclose capacitor multiplier circuits that may be integrated into imaging devices, such as for semiconductor Complimentary Metal Oxide Semiconductor (CMOS) image sensors, to create an effective capacitance in response to a low frequency, such as row-wise temporal noise, that may be generated along a row of image sensor pixels. The created effective capacitance from any one of the capacitor multiplier circuits along with a small signal resistance created by a trans-conductance of a current biasing transistor form a low pass filter that will attenuate the low frequency noise.