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:
Feb. 03, 2009
Filed:
Oct. 26, 2007
Applicants:
Shiro Tsunai, Kawasaki, JP;
Kosei Tamiya, Tokyo, JP;
Tetsuo Kikuchi, Tokyo, JP;
Inventors:
Assignees:
NEC Electronics Corporation, Kanagawa, JP;
Olympus Corporation, Tokyo, JP;
Olympus Imaging Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/146 (2006.01); G01J 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an autofocus image sensor, monitoring pixels are disposed adjacent to a pixel array over a length equal to that of the pixel array in each of a standard portion and a reference portion. Signals from the monitoring pixels of both of the standard portion and the reference portion are subjected to arithmetic operation to control accumulation of electric charges. Thus, an error in position detection is minimized.