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:
Jan. 22, 2013
Filed:
Jan. 05, 2009
Takashi Matsushita, Yokohama, JP;
Takashi Matsushita, Yokohama, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
A display apparatus able to perform appropriate and accurate focusing. An image displayed on a display unit is stored in a first storage unit, a focus position of the image is moved by a movement unit, and the image obtained after the focus position movement is stored in a second storage unit. The images stored in the first and second storage units are compared by a comparison unit on a pixel basis, and based on a result of the comparison, an image area where there is a change in pixel state is extracted by an extraction unit, a contrast value in the extracted image area is calculated by a calculation unit, and a change in the calculated contrast values is determined by a determination unit. Based on a result of the determination, the attribute of pixels in the extracted image area is changed by a change unit.