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:
Jun. 03, 2008
Filed:
Nov. 26, 2003
Tianbing Brian Teng, Portland, OR (US);
Mike Callahan, Tualatin, OR (US);
Tianbing Brian Teng, Portland, OR (US);
Mike Callahan, Tualatin, OR (US);
Pixelworks, Inc., Tualatin, OR (US);
Abstract
The invention relates to a semiautomatic keystone correction system and method. The system includes an interface and a controller. A user selects a plurality of corners within an image projected on a projection surface using the interface and the controller predistorts the image responsive to the selected plurality of corners where the predistorted image exhibits no distortion when re projected on the projection surface. The user further aligns a center of the image with a center of the projection surface, also using the interface. The controller predistorts the image by scaling the image in vertical and horizontal directions using vertical and horizontal scalars, respectively.