Patents by Inventor Edward F. Asam

Edward F. Asam 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).

  • Patent number: 4633415
    Abstract: A method and a circuit for producing an independent scrollable display region (sometimes referred to as a "window") on the face of a cathode-ray tube (CRT) in a bit-mapped data display system is disclosed. Circuitry is provided to detect the presence of the window along a vertical axis and to detect the presence of the window along a horizontal axis. When both a vertical and a horizontal presence are detected simultaneously, a window is deemed to be present. When the window is deemed to be present a memory address selection circuit selects memory addresses from one memory address circuit and when the window is deemed to be not present, the memory address selection circuit selects memory addresses from another memory address circuit.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: December 30, 1986
    Assignee: Northern Telecom Limited
    Inventors: Anthony B. Vink, Edward F. Asam, Dewayne J. Ferris