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Antialiased pixel based display system for lines and solids

  • US 5,140,315 A
  • Filed: 04/16/1990
  • Issued: 08/18/1992
  • Est. Priority Date: 04/16/1990
  • Status: Expired due to Term
First Claim
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1. In a pixel based display system having a display device defining a multiplicity of pixels, and control means to control the intensity displayed in said pixels to display an image, said control means including antialiasing means to reduce aliasing distortion by controlling the intensity of pixels bridging boundaries between objects in said image to be blends of the intensities in said image on each side of such boundaries, wherein the percentage of the intensity used in the blends is determined by mix values represented by binary words;

  • the improvement wherein said control means includes line drawing means to control the intensity of said pixels to represent diagonal lines one pixel wide and wherein said antialiasing means controls the blends in each pair of adjacent horizontal pixels bridging the leading and trailing edge of a diagonal line in accordance with the same mix value represented by a single binary word.

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