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:
Jul. 09, 2013
Filed:
Sep. 23, 2011
Nam-ryeol Kim, Chungeheongbuk-do, KR;
Song-yl Kim, Chungcheongbuk-do, KR;
Chang-min Bae, Chungcheongbuk-do, KR;
Hack-soo OH, Chungcheongbuk-do, KR;
Nam-Ryeol Kim, Chungeheongbuk-do, KR;
Song-Yl Kim, Chungcheongbuk-do, KR;
Chang-Min Bae, Chungcheongbuk-do, KR;
Hack-Soo Oh, Chungcheongbuk-do, KR;
Intellectual Ventures II LLC, Wilmington, DE (US);
Abstract
A CMOS image sensor includes: a plurality of CDS/PGAs (correlating double sampling/programmable gain amplifiers) for processing output signals of pixels corresponding to same colors on different paths; and an offset difference removing part for removing offset difference that occurs when the same color signals are processed on the different paths, wherein the offset difference removing part includes: a dummy pixel array where light is shielded; a unit for reading signals of the dummy pixel array through the CDS/PGAs and storing average offset values for each path; and a signal synthesizing unit for synthesizing the average offset values and signals of an effective pixel array, which are read through the respective CDS/PGAs, and outputting signals of which offset difference is removed.