Patents by Inventor David J. Grucza

David J. Grucza 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).

  • Programmable delay line using laser diode taps
    Patent number: 5641954
    Abstract: A series of taps are created within an acousto-optic cell by imaging an array of LEDs within the cell. The illuminated tap regions are selectively changed by energizing selected LEDs. The electrical input signal produces a travelling acoustic wave within the cell and when the wave crosses illuminated tap regions, electrical output signals are produced having delays proportional to the positions of illuminated LEDs in the array. The magnitude of the output signal is proportional to the LED light intensity which is varied to produce a weighted output signal.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: June 24, 1997
    Assignee: The United States of American as represented by the Secretary of the Air Force
    Inventors: Christopher W. Keefer, Michael J. Ward, David J. Grucza