Patents Assigned to Lexidata Corporation
  • Patent number: 4609917
    Abstract: A display system for displaying a three-dimensional image on a two-dimensional raster display screen wherein a host processor supplies input information on the geometric elements, e.g. polygons, which make up the image to a local display processor which processes said input information and provides data concerning the location, color, intensity and depth of the points which make up the surfaces of the polygon. The depth data is stored in a depth buffer which is a part of the display processor and the color and intensity data is also stored directly in a frame buffer or as color index data in the frame buffer which is used to address the desired color and intensity stored in a color look-up table. The color and intensity video data is supplied to a suitable display means, such as a cathode ray tube.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: September 2, 1986
    Assignee: Lexidata Corporation
    Inventor: Tsu Y. Shen
  • Patent number: 4475104
    Abstract: A display system for displaying a three-dimensional image on a two-dimensional raster display screen wherein a host processor supplies input information on the geometric elements, e.g. polygons, which make up the image to a local display processor which processor said input information and provides data concerning the location, color, intensity and depth of the points which make up the surfaces of the polygon. The depth data is stored in a depth buffer which is a part of the display processor and the color and intensity data is also stored directly in a frame buffer or as color index data in the frame buffer which is used to address the desired color and intensity stored in a color look-up table. The color and intensity video data is supplied to a suitable display means, such as a cathode ray tube.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: October 2, 1984
    Assignee: Lexidata Corporation
    Inventor: Tsu Y. Shen