Patents by Inventor Thomas K. McFarland

Thomas K. McFarland has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Digital shade control for color CRT background and cursors
    Patent number: 4467322
    Abstract: A color cathode ray tube is provided in a color monitor of a video display terminal. The red, green and blue color video input lines are connected to novel control circuits which permit the selection of several different shades of colors for the background or cursor. The circuits which control the background colors are pulse modulated to provide digital shade control of the background color selected and automatically control the color of the cursor so that a contrasting color is provided.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: August 21, 1984
    Assignee: Sperry Corporation
    Inventors: Wayne D. Bell, Thomas K. McFarland