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. 07, 2012
Filed:
Mar. 04, 2009
Applicants:
Takashi Ichimiya, Yokohama, JP;
Masanori Ohtsuka, Yokohama, JP;
Inventors:
Takashi Ichimiya, Yokohama, JP;
Masanori Ohtsuka, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 3/00 (2006.01); G03B 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention includes accumulation units () which accumulate signals obtained by sensing units (), an area determination unit () which sets the size of an area of a sensing unit to be segmented into a plurality of areas on the basis of the information of a lens to be focus-detected, accumulation control units (-) which control, for each of the areas, accumulation of signals obtained in a plurality of areas by the accumulation units, and a defocus detection unit () which detects defocus states in the respective areas from accumulated signals from a plurality of areas.