Patents by Inventor Donald G. Hayles

Donald G. Hayles 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).

  • Arbitrary raster blanking circuit
    Patent number: 4663618
    Abstract: An apparatus is disclosed for displaying arbitrary forms on a raster-scanned cathode ray tube converting the analog X and Y deflection voltages of the raster signal directly into a digital TTL level blanking signal. The circuit designer, utilizing cartesian or polar coordinates, specifies a desired shape and its location utilizing the appropriate formulas. In this manner, a number of raster cut-out circuits are readily coupled to define a desired number of arbitrary shapes on a raster scanned cathode ray tube.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: May 5, 1987
    Assignee: Rockwell International Corporation
    Inventors: Donald G. Hayles, Mark N. Hepworth