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. 28, 2010
Filed:
Dec. 21, 2006
Koji Oshima, Yokohama, JP;
Koji Oshima, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image sensing apparatus includes an image sensing device having a plurality of pixels, a smoothing unit that smoothes a dark image signal acquired with the image sensing device shielded from light; a subtraction unit that subtracts a second dark image signal from the dark image signal; an extraction unit that extracts, as a defective pixel of the image sensing device, a pixel of which an obtained difference is outside a preset range; and a correction unit that corrects, out of subject image signals output from the image sensing device, an image signal of the defective pixel extracted by the extracting unit, using an image signal of a pixel peripheral to the defective pixel.