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:
Oct. 07, 2014
Filed:
Feb. 13, 2012
Keiji Nagata, Yokohama, JP;
Keiji Nagata, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image pickup apparatus includes an image pickup elementthat includes unit cells capable of individually reading signals from pixels that receive light beams transmitting through different pupil positions of an image pickup lens, a detectorthat generates a pair of image signals in a pupil division direction using a signal from a pixel corresponding to each of the unit cells to perform focus detection based on a phase difference, a defective pixel storage unitthat stores defective pixel information, and a defective pixel compensating unitthat compensates a signal of a defective pixel based on an output of the defective pixel storage unit. The defective pixel compensating unitcompensates the signal of the defective pixel using a signal obtained from a pixel disposed in a direction different from the pupil division direction with respect to the defective pixel.