Patent ID: 7557861

Claim:
An apparatus comprising: one or more circuits operative for, at least: first computing vertical approximations of luminance values for one or more absent pixels in a field phase of one or more video frames, said approximations performed using one or more present pixels; second computing one or more first differences between each of said vertical approximations and corresponding luminance values of pixels in one or more adjacent fields of said field phase of said one or more video frames; categorizing said one or more first differences into a first set of high values and a second set of said low values for said field phase; and subtracting a second value from a maximum of said second set of low values to generate a second difference, said second value computed by taking an average of said first set of high values, said first computing, second computing, categorizing, and subtracting performed to detect and correct pixels that do not conform to expected luminance values when performing a reverse pull-down of video.