Patents Represented by Attorney, Agent or Law Firm David E. Franklin
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Patent number: 6798910Abstract: An apparatus, program product and method detect region boundaries, or edge, of an arbitrary number of pixels in width in a digital image that has coarse resolution, high noise levels and/or significant blur. A self-optimizing kernel generator detects edges of arbitrary thickness. In addition, combining results of multi-resolution edge detection provides significant noise tolerance, such as a 10 dB improvement over conventional techniques. Moreover, the edge detection preserves the precise location of a blurred edge and quantifies image clarity.Type: GrantFiled: May 17, 2001Date of Patent: September 28, 2004Assignee: The United States of America as represented by the Secretary of the Air ForceInventor: Kelce S. Wilson
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Patent number: 6111641Abstract: The purpose of the nonlinear spectrophotometer is to provide a simple instrument that can be used on a routine basis to accurately measure the two-photon absorption (TPA) coefficient and cross-section on a wide variety of materials. The instrument is capable of measuring: (1) both organic and inorganic materials, (2) solutions and thin film materials forms, and (3) materials which are fluorescent and nonfluorescent.Type: GrantFiled: March 23, 1998Date of Patent: August 29, 2000Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Anadi Mukherjee, Nandini Mukherjee, Conrad S. Sarvis, Bruce A. Reinhardt
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Patent number: 5991021Abstract: The purpose of the nonlinear spectrophotometer is to provide a simple instrument that can be used on a routine basis to accurately measure the two-photon absorption (TPA) coefficient and cross-section on a wide variety of materials. The instrument is capable of measuring: (1) both organic and inorganic materials, (2) solutions and thin film materials forms, and (3) materials which are fluorescent and nonfluorescent.Type: GrantFiled: February 1, 1999Date of Patent: November 23, 1999Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Anadi Mukherjee, Nandini Mukherjee, Conrad S. Sarvis, Bruce A. Reinhardt
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Patent number: 5903473Abstract: A computer implemented method and system for preparing a description of an electromagnetic scattering net approximating an actual scattering net for analyzing effect on sensor imagery is comprised of: (1) inputting a basic tent configuration comprising a number of tent poles, spacing of tent poles, a covering net, an amount of net sag, and plurality of locations of ground anchor points, representing the design variables selected by an operator from which a net can be modeled; (2) dividing the overall net shape into a plurality of large facets that describe the overall shape conforming to the basic net configuration; (3) subdividing each large facet into a plurality of small facets in accordance with the input number of small facets per large facets chosen so that the small facets correspond in wavelength to the scattering of an actual scattering net; (5) rotating each small facet to achieve an approximation of the signature reduction of an actual scattering net; and (6) outputting a description of rotated smaType: GrantFiled: January 27, 1997Date of Patent: May 11, 1999Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Gilbert G. Kuperman, Kenneth S. Crum
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Patent number: 5608255Abstract: A photo FET device having a large area backside optical energy reception surface is disclosed. The photo FET device is fabricated in the source gate and drain upward configuration using a lattice determining surrogate substrate and a mesa-forming deep etch processing sequence and then inverted onto a new permanent substrate member and the surrogate substrate member removed in order to expose the active area backside optical energy reception surface. Fabrication of the device from two possible indium-inclusive semiconductor materials and a particular gate metal alloy is also disclosed.Type: GrantFiled: May 17, 1995Date of Patent: March 4, 1997Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Eric A. Martin, Kenneth Vaccaro, William Waters, Joseph P. Lorenzo, Stephen Spaziani
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Patent number: 5594262Abstract: The incorporation of an aluminum arsenide (AlAs) buffer layer in a gallium arsenide (GaAs) field effect transistor (FET) structure is found to improve the overall device performance, particularly in the high temperature operating regime. Similar characteristics may be obtained from devices fabricated with an Al.sub.x Ga.sub.1-x As 0.2.ltoreq.x.ltoreq.1 barrier layer. At temperatures greater than 250.degree. C., the semi-insulating gallium arsenide substrate begins to conduct significant amounts of current. The highly resistive AlAs buffer layer limits this increased conduction, thus permitting device operation at temperatures where parasitic leakage currents would impede or prevent device operation. Devices fabricated with AlAs buffer layers exhibited lower drain parasitic leakage currents and showed improved output conductance characteristics at 350.degree. C. ambient temperature.Type: GrantFiled: April 7, 1995Date of Patent: January 14, 1997Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Hyong Y. Lee, Belinda Johnson, Rocky Reston, Chris Ito, Gerald Trombley, Charles Havasy
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Patent number: 5592850Abstract: A test system for evaluating the performance of a seeking missile's guidance system under realistic but laboratory-controlled conditions wherein the guidance system is segregated from an actual missile but used to control a multiple degrees of freedom seeker capturing apparatus. The multiple degrees of freedom seeker capturing apparatus is allowed to respond to the seeker's commands in simultaneous of the actual missile's responses to such commands. The test system also provides for the introduction of countermeasures information to the seeker's input field. The test systems may be embodied with the addition of movable elements, e.g., infrared sources to a five-axis flight table apparatus and may employ computer control of the test conditions and results evaluation. Use of the disclosed system to test improved countermeasures devices against known seeker capabilities is also contemplated.Type: GrantFiled: June 27, 1994Date of Patent: January 14, 1997Assignee: The United States of America as represented by the Secretary of the Air ForceInventor: Herman K. Rowan