Patents by Inventor William F. Hartwig

William F. Hartwig 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 graphics generation system
    Patent number: 4272808
    Abstract: A real time digital graphics display system is disclosed for generating circles, arcs and vectors. The system utilizes Taylor's formula to determine the successive coordinates of the points along the image of the character displayed. The system is able to display a given graphical character once given the coordinates of a start point, an end point and the number of increments to be displayed if an arc is to be displayed.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: June 9, 1981
    Assignee: Sperry Corporation
    Inventor: William F. Hartwig