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:
Sep. 23, 2014
Filed:
Dec. 08, 2011
Hiroyasu Katagawa, Tokyo, JP;
Takeshi Ogawa, Tokyo, JP;
Hiroyasu Katagawa, Tokyo, JP;
Takeshi Ogawa, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image pickup apparatusincludes an image pickup elementthat includes a plurality of pixels that function as both imaging pixels and focus detection pixels, which is configured so that an image pickup signal that is obtained by performing photoelectric conversion in a first direction, an evaluation value generating unitthat generates an evaluation value of the image pickup signal, a flicker detecting unitthat detects variation information of illumination intensity based on the evaluation value, a flicker correction value generating unitthat generates a flicker correction value for performing a flicker correction for the image pickup signal based on the variation information, a multiplierthat performs the flicker correction for the image pickup signal based on the flicker correction value, and a vertical correlation calculating unitthat performs a correlation calculation in the first direction after the flicker correction is performed.