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. 30, 2009
Filed:
Feb. 28, 2005
Suhun Lim, Suwon-si, KR;
Suhun Lim, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A method and circuit for performing Correlated Double Sub-Sampling (CDSS) of pixels in an active pixel sensor (APS) array. The method and the apparatus subsamples a plurality (L) of pixels by: storing Lanalog reset charges output from the Lpixels into a first set of (N) storage capacitors, and combining the (L) reset charges; storing Lanalog image signal charges output from the Lpixels into a second set of (N) storage capacitors, and combining the (L) image charges; and then obtaining a differential voltage (VS-VR) by subtracting (in the analog-domain) the voltage (VR) represented by the combined (L) reset charges from the voltage (VS) represented by the combined (L) image signal charges. When L equals one, the circuit performs conventional Correlated Double Sampling CDS upon the one pixel.