Patent Document ID: 20020047933
Application ID: 09054955
Patent Status: 0

Claim One:
1. A method for improving the quality of an enhanced video image, while simultaneously maintaining or improving image sharpness, by clipping the RGB levels of said enhanced video image, at the points of enhancement, to upper and lower level bounds representing the signal levels of said video signal prior to its enhancement, where said method comprises the steps of; a) generating for each pixel on each horizontal scan line, said pixel located at position x, an upper bound and a lower bound for that pixel's signal levels using the RGB levels at x−s and at x&plus;s, respectively, as those upper and lower bounds, where x is a pixel position on the scan line and s is a predetermined pixel position offset from position x. b) clipping the RGB levels of the pixel at x to the RGB levels of said lower bound when the RGB levels of the pixel at x are lower than said lower bound, c) clipping the RGB levels of the pixel at x to the RGB levels of said upper bound when the RGB levels of the pixel at x are greater than said upper bound.