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. 02, 2008
Filed:
Jul. 01, 2004
Masanobu Kobayashi, Suwa, JP;
Masanobu Kobayashi, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projector includes a calibration image information generation section, an image projection section which projects a calibration image, a sensing section which senses a region including the projected calibration image and a projection target through a sensing plane to generate sensing information, a projection target region information generation section which generates projection target region information which indicates coordinates of four corners of the projection target in a sensing region based on the sensing information, a projection area information generation section which generates projection area information which indicates coordinates of four corners of the calibration image in the sensing region based on the sensing information, a correction information generation section which generates image distortion correction information based on the projection target region information and the projection area information, and a distortion correction section which corrects image distortion based on the image distortion correction information.