Patents by Inventor William Charles Ruff

William Charles Ruff 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).

  • Systems for doppler tracking using photonic mixing detectors
    Patent number: 7573564
    Abstract: Ladar systems are provided. An exemplary ladar system includes a waveform generator for generating an arbitrary waveform, a laser for transmitting a modulated light signal toward a target, and a Doppler tracking loop for tracking the Doppler frequency shift between the transmitted light signal and a received reflected light signal.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: August 11, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William Charles Ruff, Brian C. Redman, Barry Lee Stann
  • Chirped amplitude modulation ladar
    Patent number: 7570347
    Abstract: An imaging method and apparatus using an unmodulated pulsed laser with a chirp modulated receiver is provided for producing 3D plus intensity imagery of targets in heavily cluttered locations The apparatus includes a laser for emitting a laser beam and synchronizing a receiver to receive a reflected laser signal and transform the reflected laser signal into a displayable image that includes intensity information.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: August 4, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William Charles Ruff, Barry L. Stann
  • SYSTEMS FOR DOPPLER TRACKING USING PHOTONIC MIXING DETECTORS
    Publication number: 20090002679
    Abstract: Ladar systems are provided. An exemplary ladar system includes a waveform generator for generating an arbitrary waveform, a laser for transmitting a modulated light signal toward a target, and a Doppler tracking loop for tracking the Doppler frequency shift between the transmitted light signal and a received reflected light signal.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 1, 2009
    Inventors: William Charles Ruff, Brian C. Redman, Barry Lee Stann
  • CHIRPED AMPLITUDE MODULATION LADAR
    Publication number: 20090002680
    Abstract: An imaging method and apparatus using an unmodulated pulsed laser with a chirp modulated receiver is provided for producing 3D plus intensity imagery of targets in heavily cluttered locations The apparatus includes a laser for emitting a laser beam and synchronizing a receiver to receive a reflected laser signal and transform the reflected laser signal into a displayable image that includes intensity information.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 1, 2009
    Inventors: William Charles Ruff, Barry L. Stann
  • Electronically code-multiplexed readout of photo-detector arrays
    Patent number: 7129465
    Abstract: Methods and apparatus for generating a code-multiplexed readout value of photocurrents for a photo-detector array of cells are disclosed. Readout values are determined using a multiplexer and current amplifier for each cell and a current-to-voltage converter for each row of cells. The multiplexer multiplexes a photocurrent in an electrical domain for a respective cell using a code and generates electric currents responsive to the photocurrent. The current amplifier amplifies the electric currents. The current-to-voltage converter for each row generates the readout value for that row of the array responsive to the amplified electric currents.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: October 31, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Jorge Andres Garcia, Fouad Eskender Kiamilev, William Beynon Lawler, William Charles Ruff, Barry Lee Stann