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:
May. 13, 2014
Filed:
May. 18, 2012
Miyako Nakamoto, Kawasaki, JP;
Miyako Nakamoto, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The image pickup apparatus includes a first detector detecting a first in-focus position by a phase difference detection method using paired image signals, a controller controlling position of a focus lens a basis of the first in-focus position to perform focusing, a second detector detecting a second in-focus position by a contrast detection method, a calculating part calculating a correction value for correcting the first in-focus position in image capturing on a basis of difference between the first and second in-focus positions, and a determining part determining a level of reliability of the first in-focus position. The controller calculates the correction value when the level of reliability is a first level, and to restrict the calculation of the correction value when the level of reliability is a second level lower than the first level.