Patents Represented by Attorney, Agent or Law Firm Eric James Whitesell
  • Patent number: 6313713
    Abstract: A matched pair circulator antenna isolation circuit provides isolation between an antenna and one or more receivers and transmitters and may also be applied to other RF devices. A portion of the transmit signal is extracted by a first RF circulator and divided into two phase-inverted signals. The first phase-inverted signal is coupled through a first directional coupler to cancel most of the transmit signal present in the receive signal. The second phase-inverted signal is coupled through a second directional coupler to cancel remaining transmit signal in the output of the first directional coupler. The output of the second directional coupler is coupled to the input of the receiver.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: November 6, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Thinh Q. Ho, Stephen M. Hart, Willard I. Henry, Gregory A. Kosinovsky
  • Patent number: 6301552
    Abstract: A radar target simulator outputs multiple video and timing signals for a selected radar type from a single computer bus card slot. Several targets including cluster targets may be simulated at conveniently selectable signal-to-noise ratios. Multiple radar types may be simulated concurrently using additional bus card slots in a single desktop computer.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: October 9, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Aldan D. Gomez, Weldon J. Dahlke, David B. Schmiedeberg, Dwight R. Wilcox, Peter N. Pham
  • Patent number: 6285249
    Abstract: A controlled stochastic resonance circuit applies stochastic resonance to bias a nonlinear device with a control signal having a selected amplitude, frequency, and phase to enhance or suppress the response of the device to a periodic signal embedded in noise.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: September 4, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Adi R. Bulsara, Frank E. Gordon, Mario E. Inchiosa, Markus Loecher, Luca Gammaitoni, Peter Haenggi, Kurt Arn Wiesenfeld, William Ditto, Joseph Neff
  • Patent number: 6281901
    Abstract: An interactive overlay for displaying 3-D data of the present invention provides a method for analyzing 3-D data by superimposing an adjustable, semi-transparent bounding surface on a display of the 3-D data. The bounding surface makes visually apparent nulls on the 3-D data surface that fall below the selected value of the bounding surface. The bounding surface also provides a visual reference for estimating relative magnitudes.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: August 28, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Carl M. Firman, Linda C. Russell
  • Patent number: 6275509
    Abstract: A masked signal transceiver of the present invention comprises a transmitter for transmitting a combined signal of a primary communications signal and an attenuated secondary communications signal occupying substantially the same frequency band concurrently. A receiver receives the combined signal and demodulates the primary communications signal to extract the primary communications signal information. An adaptive locally optimum processor separates the secondary communications signal from the combined signal. The secondary communications signal is then demodulated to extract the secondary communications signal information.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: August 14, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Thomas W. Schlosser, James W. Bond
  • Patent number: 6259560
    Abstract: A continuously variable beam combiner combines multiple input beams of different wavelengths into a single output beam in which the power of each input beam may be varied continuously.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: July 10, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard Scheps
  • Patent number: 6229847
    Abstract: A signal quality measurement device of the present invention comprises a deviation function for determining a measured deviation value from envelope amplitude samples of a communications signal and a table function of deviation values versus signal-to-noise ratios computed from a statistical model of atmospheric noise for finding a signal-to-noise ratio that corresponds to the measured deviation value.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: May 8, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas W. Schlosser
  • Patent number: 6218985
    Abstract: A method for steering a beam of an antenna array minimizes a least squares approximation of an error function of a desired radiation pattern relative to an antenna array pattern calculated from a known radiation pattern for each antenna element.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: April 17, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard C. Adams
  • Patent number: 6204160
    Abstract: A method for making electrical contacts and junctions in silicon carbide that concurrently incorporates and activates dopants from a gaseous ambient. The low temperature processing of the present invention prevents the formation of crystalline defects during annealing and preserves the quantitative chemical properties of the silicon carbide. Improved activation of dopants incorporated in a silicon carbide sample is provided for making the electrical contacts and junctions.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: March 20, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen D. Russell, Ayax D. Ramirez
  • Patent number: 6176922
    Abstract: A method is presented for crystallizing a thin film on a substrate by generating a beam of pulsed optical energy, countouring the intensity profile of the beam, and illuminating the thin film with the beam to crystallize the thin film into a single crystal lattice structure.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: January 23, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Monti E. Aklufi, Stephen D. Russell
  • Patent number: 6177913
    Abstract: A volumetric display comprises complementary segments made of a transparent material. An optical scattering layer is formed on a surface between adjoining segments. The segments are joined to form a display volume that may be rotated to cause the scattering layer to sweep out the entire display volume each revolution. A scanning beam may be used to illuminate points on the scattering layer at selected rotation angles to create a three-dimensional image.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: January 23, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Eric James Whitesell
  • Patent number: 6165801
    Abstract: A method for the fabrication of active semiconductor and high-temperature perconducting devices on the same substrate to form a monolithically integrated semiconductor-superconductor (MISS) structure is disclosed. A common insulating substrate, preferably sapphire or yttria-stabilized zirconia, is used for deposition of semiconductor and high-temperature superconductor substructures. Both substructures are capable of operation at a common temperature of at least 77 K. The separate semiconductor and superconductive regions may be electrically interconnected by normal metals, refractory metal silicides, or superconductors. Circuits and devices formed in the resulting MISS structures display operating characteristics which are equivalent to those of circuits and devices prepared on separate substrates.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: December 26, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael J. Burns, Paul R. de la Houssaye, Graham A. Garcia, Stephen D. Russell, Stanley R. Clayton, Andrew T. Barfknecht
  • Patent number: 6147754
    Abstract: A LIBS cone penetrometer comprises a decoupling mirror to separate an excitation signal and a response signal, an optical fiber arranged with the decoupling mirror for receiving the excitation signal from an energy source and transmitting the response signal from a sample surface, and a cone penetrometer probe connected to the distal end of the optical fiber. The probe further comprises a collimating lens arranged with the optical fiber for collimating the excitation signal and for directing the response signal into the optical fiber. An internally reflecting prism is aligned with the collimating lens to deflect the excitation signal and the response signal between the collimating lens and the sample surface through a window in the side of the probe. A focusing lens is aligned with the prism and the window to reduce the spot size of the excitation signal and to collimate the response signal.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: November 14, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gregory A. Theriault, Stephen H. Lieberman, David S. Knowles, Leonard J. Martini
  • Patent number: 6137609
    Abstract: An optical communications transceiver comprises a transmitter for transming a communications signal having at least two wavelengths and a receiver for concurrently detecting the communications signal on each wavelength. The receiver compares the data content of the communications signal received on each wavelength and detects errors in the received data. A display displays valid received data.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: October 24, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard Scheps
  • Patent number: 6105504
    Abstract: Actuating circuitry which may be used with a contact exploder, useful on a orpedo, for example, which is sensitive not only to direct hits but also to abrasive damage or sea water exposure caused by grazing contact, but insensitive to changes in its velocity or momentum or unwanted environmental background, such as shock, vibration and electromagnetic field variation. The exploder includes a normally insulated and shielded wire which traverses that part of the surface of the missile which is most likely to make contact with a target. The wire is so connected into associated actuating circuitry that it will cause explosion if: (1) even grazing contact with a target causes removal of even a small amount of the insulation and shielding of the wire, which causes grounding of the circuitry at the wire; or (2) even grazing contact opens or breaks the wire at any point.
    Type: Grant
    Filed: June 30, 1969
    Date of Patent: August 22, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Dwight T. Ayres, Carroll L. Key, Jr., Miles T. Pigott, George F. Wislicenus
  • Patent number: 6107632
    Abstract: A microminiature neutron radiation detector includes an ionization well fed in an electrically conductive substrate for coupling to a bias voltage to establish an electric field, a pressurized atmosphere substantially filling the ionization well for generating ions inside the ionization well from neutron collisions, and a collection electrode coupled to the ionization well for collecting the ions driven to the collection electrode by the electric field.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: August 22, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Eric J. Lind
  • Patent number: 6088295
    Abstract: A feature imaging and adaptive focusing synthetic aperture processing met provides improved sharpness and easier classification of images derived from radar and sonar echo data by applying adaptive focusing and feature imaging to a sequence of echo data.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: July 11, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Richard A. Altes
  • Patent number: 6078111
    Abstract: An optoelectronic switch for switching an input signal comprises two PIN des connected in series with opposed polarity, an input signal choke connected to the PIN diodes for presenting a high impedance to the input signal and a low impedance to a PIN diode bias, and a photovoltaic cell connected to the PIN diodes and the input signal choke for generating the PIN diode bias to switch the PIN diodes between a substantially conductive state while the photovoltaic cell receives optical energy from a light source and a substantially non-conductive state while the photovoltaic cell does not receive optical energy from the light source.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: June 20, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Chen-Kuo Sun, Ching T. Chang, Richard Nguyen, Donald J. Albares
  • Patent number: 6076174
    Abstract: A scheduling framework for a heterogeneous computer network comprises a task performance predictor for estimating computation time on each computer in a network for each job input to the network, a performance characteristics database for recording information about each component of the network including the performance history of each computer in the network for each job, an administrative interface for entering scheduling information, editing the performance characteristics database, selecting real-time or simulated operation, and for monitoring network performance, a user interface for specifying constraints on the execution of a particular job, a scheduler for assigning the jobs to the computers in the network, and a controller for responding to network events and for relaying scheduling information to the network and network status messages from the network.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: June 13, 2000
    Assignee: United States of America
    Inventor: Richard F. Freund
  • Patent number: H1878
    Abstract: The automated charting system of the present invention comprises a computer program for inputting current position from the Global Positioning Syst accessing the Digital Nautical Chart database (DNC), selecting the best available nautical chart data for the current position, and displaying the current position on the selected nautical chart.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: October 3, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert A. Greer, Miroslav Stamenkovich