Abstract: A method of processing video data includes directing the video data set toward a display device. The display device has horizontal resolution h1 and vertical resolution v1. The video data has horizontal resolution h2 and vertical resolution v2. The video data includes a plurality of scan lines. At least one scan line has at least one line span representing the projection onto that scan line of a graphics vector rendered in the video data. The graphics vector has a slope and the line span has a color and a width. The method includes, for a resultant video data set having a horizontal resolution less than h2, determining a color of an edge resultant pixel in a resultant scan line using, at least in part, the slope of the graphics vector at an edge sub-pixel.

Abstract: A method of and apparatus for convolution that provides both scaling and elimination of flicker when displaying computer generated or computer processed information on an interlaced, television monitor. One preferred embodiment includes a bilinear interpolation for scaling combined with a modified three line convolution for flicker reduction. In one preferred embodiment, 8 lines of a source computer image are scaled to 7 lines of a television image for display. The weighted contribution of each input line varies according to which combination of lines contribute to each output line, and the mathematically optimal weighting factors are modified for easier implementation in hardware.