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:
Dec. 20, 2011
Filed:
Oct. 09, 2008
Takafumi Kishi, Kawasaki, JP;
Koji Oshima, Yokohama, JP;
Takafumi Kishi, Kawasaki, JP;
Koji Oshima, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image pickup apparatus capable of accurately detecting a flicker in a short time period without regard to a state of object and a photography scene. A signal processing circuit reads out an n-th line of an image subjected to collective reset/collective transfer readout, reads out an n-th line of an image subjected to rolling readout, and subtracts an output of a pixel section of a particular column of the n-th line of the image subjected to the rolling readout from an output of a corresponding pixel section of the image subjected to the collective reset/collective transfer readout. The signal processing circuit determines that a flicker is generated, if there is a differential value not less than a predetermined threshold value between each pair of outputs from the pixel sections of the same line and if there is a periodicity in an image vertical direction.