Patents Assigned to Spectra Research, Inc.
  • Patent number: 7107144
    Abstract: A traffic monitoring system including a non-intrusive lane monitor is provided. The lane monitor comprises one or more laser channels, a user interface, and a programmable controller in communication with the laser channels and the user interface. In accordance with one embodiment of the present invention, a pair of laser channels are provided. The first laser axis is substantially parallel to the second laser axis and the first and second laser axes lie substantially in a common horizontal plane. The programmable controller is configured to generate reflected laser pulse count corresponding to reflection of a pulsed laser signal from a target positioned along one of the laser axes and identify the reflected signal as a valid or invalid target by comparing the pulse count to a predetermined valid target count.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: September 12, 2006
    Assignee: Spectra Research, Inc.
    Inventors: Jerry V. Capozzi, Michael R. Johnson, Gordon R. Little, Paul D. Zidek
  • Patent number: 6946963
    Abstract: An information storage disc, a method of disc manufacture, and a scheme for improved disc surveillance are provided. Generally, the present invention utilizes the geometry and conductivity of a disc's information storage medium to establish an electrically resonant circuit in the disc body. The electrically resonant circuit may be used to detect, locate, and/or monitor the disc. In accordance with 37 CFR 1.72(b), the purpose of this abstract is to enable the United States Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract will not be used for interpreting the scope of the claims.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: September 20, 2005
    Assignee: Spectra Research, Inc.
    Inventors: John W. Sellers, Jr., Eugene E. Mayle, Jr.
  • Patent number: 6767568
    Abstract: A method and apparatus for processing meat is provided. According to the method, a meat product is positioned within an interior volume of a decompression chamber. A pressure differential is created across a gas output in communication with the interior volume of the decompression chamber. The decompression chamber is then rapidly decompressed by transferring gas from the interior volume of the decompression chamber through the gas output. The pressure differential and the rate of the rapid decompression are selected to be suitable for processing the meat product positioned within the interior volume of the decompression chamber. Typically, the pressure differential and the rate of rapid decompression are selected to be suitable for tenderizing the meat product, killing microorganisms in the meat product, or both.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: July 27, 2004
    Assignee: Spectra Research, Inc.
    Inventors: Stanley Eugene Tate, John William Sellers, Jr., Morse Bartt Solomon, Bradford William Berry
  • Patent number: 6439891
    Abstract: A shock wave generator is provided incorporating a compressed gas reservoir, a high speed valve assembly, and a shock tube. The high speed valve assembly is arranged to open and close selectively a gas passage extending from the compressed gas reservoir to the shock tube. The high speed valve assembly comprises a valve sleeve, a valve seat, and a valve sleeve driving assembly. The valve sleeve is arranged to extend across the gas passage between a first side of the gas passage and a second side of the gas passage. The valve seat is arranged on the second side of the gas passage and is positioned to receive the valve sleeve upon extension of the valve sleeve across the gas passage. The valve sleeve driving assembly is arranged to cause extension and retraction of the valve sleeve across the gas passage. The valve sleeve defines a circular cross section and an epicentral valve sleeve axis and includes a valve sleeve flange arranged on a leading edge thereof.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: August 27, 2002
    Assignee: Spectra Research, Inc.
    Inventors: Stanley Eugene Tate, John William Sellers, Jr.
  • Patent number: 6100840
    Abstract: The RF tag system of the present invention minimizes the effect of the RF tag on the overall radar cross section (RCS) of the object with which it is associated, tailors the signal reflected from the tag to match the actual RCS of the object with which it is associated, utilizes an RF tag design that reduces degenerative RF coupling at the tag, and is designed to exploit the operational features of conventional pulse Doppler radars. In accordance with one embodiment of the present invention, a radio frequency tag system is provided including an interrogator and a tag. The tag is secured to an object. The interrogator is configured to generate a transmitted electromagnetic interrogation signal at a predetermined interrogation frequency. The tag comprises an antenna array including a plurality of receiver antennas and a plurality of transmitter antennas.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: August 8, 2000
    Assignee: Spectra Research, Inc.
    Inventors: Paul Donald Zidek, John William Sellers, Jr., Gary A. Thiele, Eugene Edwin Mayle, Jr., Ronald George Riechers
  • Patent number: 6064903
    Abstract: A system for and method of electromagnetically detecting an embedded dielectric region within a target object are provided. The method includes the steps of: (i) selecting a target object including a plurality of discrete scattering mediums, wherein the plurality of discrete scattering mediums include the embedded dielectric region and an adjacent dielectric region, and wherein the plurality of discrete scattering mediums define at least one dielectric interface between the embedded dielectric region and the adjacent dielectric region; (ii) directing electromagnetic radiation at the target object, wherein the electromagnetic radiation is characterized by a diagnostic frequency that is varied incrementally over a diagnostic frequency band; (iii) detecting electromagnetic radiation reflected by the target object over the predetermined frequency band such that there are M measurements of a reflected electromagnetic signal at frequencies f.sub.1, f.sub.2, . . . , f.sub.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: May 16, 2000
    Assignee: Spectra Research, Inc.
    Inventors: Ronald George Riechers, Krishna Murthy Pasala
  • Patent number: 5511978
    Abstract: An explosion simulator generates bang, smoke and flash cues. Pressurized gas is released into a shock tube to generate a shock wave and, thereby produce the bang cue. The pressurized gas is released from a gas reservoir into the shock tube through a diaphragm which is broken by a firing pin in response to a control circuit. A smoke powder packet containing a smoke powder is positioned in the shock tube. The pressurized gas travelling in the shock tube bursts the smoke powder packet and the smoke powder is dispersed to produce a smoke cue, or cloud. A flashtube generates the flash cue to illuminate the smoke cloud. An audio/visual explosion simulation system is also disclosed for generating multiple bang, smoke and flash cues from a single shock tube. Immediately prior to generating a bang cue, a gas supply fills a gas reservoir with pressurized gas. A reusable valve opens to release the pressurized gas from the reservoir into the shock tube and closes to seal the reservoir for refilling by the gas supply.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: April 30, 1996
    Assignee: Spectra Research, Inc.
    Inventors: John W. Sellers, Jr., Stanley E. Tate