Patent ID: 7239360
Filing Date: 2007-07-03
Classification: H04N

Abstract:
1. A projection system for displaying a distortion corrected optical image on a projection screen based on input image data, comprising: (a) an electronic correction unit for receiving the input image data and generating pre-distorted image data; (b) an image projector coupled to the electronic correction unit for receiving the pre-distorted image data and providing an pre-distorted optical image that corresponds to the pre-distorted image data; (c) said electronic correction unit being adapted to pre-distort the geometry of the input image data such that when said pre-distorted optical image based on said pre-distorted image data provided through the image projector, the optical, geometric, and alignment distortions associated with said image projector are eliminated in the displayed optical image; and, (d) said electronic correction unit being further adapted to independently pre-distort the geometry of each primary color represented by the input image data and generate a pre-distorted primary color image data to compensate for differences in the optical refraction of each color, such that when the pre-distorted primary color image associated with the pre-distorted primary color image data is projected through the image projector to the projection screen, the optical and geometric distortions associated with each primary color optical image are eliminated.