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:
Mar. 13, 2012
Filed:
Oct. 05, 2007
Hideyuki Rengakuji, Tokyo, JP;
Hideyuki Rengakuji, Tokyo, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
An image defect correction apparatus capable of satisfactorily correcting a white vertical line caused by point defects on the same vertical CCD. A first correction value is determined from a difference between an average value of luminance signals obtained by a vertical CCD including one or more point defects and an average value of luminance signals obtained by the vertical CCDs when light-receiving elements face a predetermined ineffective signal region. It is determined to which of regions divided by Y addresses of point defects on the same vertical CCD each of Y-directional positions of luminance signals outputted from a horizontal CCD is positioned. The first correction value is multiplied by a predetermined coefficient corresponding to the determined region to calculate a second correction value with which the luminance signals from the horizontal CCD are corrected.