Patent Number: 6,305,805

Title: System, method and software for correcting keystoning of a projected image

Abstract: A presentation system, method and software for displaying an image on a screen and correcting image keystoning caused by a projection lens of a projector not being centered on the screen. The presentation system comprises a computer including a processor and memory and a projector interfaced with the computer to project an image A stored in the computer's memory. A program of instructions stored in the computer's memory includes instructions configured to correct keystoning of the image projected by the projector without centering the projector on the screen. The program provides a software solution to avoid hardware modifications to the computer or projector to correct keystoning. The program also includes instructions configured to input right/left and upward/downward projection angles to correct keystoning caused by some combination of the angles being greater than or less than 90.degree..

Inventors: Liebenow; Frank (Dakota Dunes, SD)

Assignee: Gateway, Inc.

International Classification: G06T 5/00 (20060101); H04N 3/233 (20060101); H04N 3/22 (20060101); H04N 5/74 (20060101); G03B 021/00 ()

Expiration Date: 10/23/2018