Patents by Inventor Geoffrey C. Yerem

Geoffrey C. Yerem 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).

  • Normalization of inductive vehicle detector outputs
    Patent number: 6988052
    Abstract: Methods for a determining a normalized lane occupancy and for monitoring signal quality for a vehicle detection system. Such methods include, in one embodiment, measuring a speed of a vehicle with an inductive vehicle detector, measuring an on-time for the vehicle crossing a wire loop sensor of the inductive vehicle detector, determining an inductive length of the vehicle from the measured speed, and computing a normalized on-time by subtracting a longitudinal length of the wire loop sensor from the inductive length and dividing the difference by the measured speed.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: January 17, 2006
    Assignee: Inductive Signature Technologies, Inc.
    Inventors: Steven R. Hilliard, Geoffrey C. Yerem
  • Inductive signature measurement circuit
    Patent number: 6911829
    Abstract: An apparatus for measuring the inductance of a wire-loop with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus measures the effective change in inductance induced in a wire-loop as a vehicle passes over the wire-loop to produce an inductive signature corresponding to a vehicle.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: June 28, 2005
    Assignee: Inductive Signature Technologies, Inc.
    Inventors: Steven R. Hilliard, Michael J. Roberts, Geoffrey C. Yerem
  • Normalization of inductive vehicle detector outputs
    Patent number: 6876949
    Abstract: Methods and apparatus for such that a measurement made for a given vehicle by a given detector is substantially repeatable using either the same detector from one time to another, or using a different detector. In one embodiment, normalization coefficients are determined by measuring one or more common probe vehicles and standardizing the outputs of the detector(s) to give a consistent output. In another embodiment, normalization coefficients are determined by measuring one or more operating or circuit parameters of the detector circuit(s), and compensating the outputs of the detector(s) for variations in these measured parameters.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: April 5, 2005
    Assignee: Inductive Signature Technologies, Inc.
    Inventors: Steven R. Hilliard, Geoffrey C. Yerem
  • Inductive signature measurement circuit
    Publication number: 20040095148
    Abstract: An apparatus for measuring the inductance of a wire-loop with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus measures the effective change in inductance induced in a wire-loop as a vehicle passes over the wire-loop to produce an inductive signature corresponding to a vehicle.
    Type: Application
    Filed: July 7, 2003
    Publication date: May 20, 2004
    Applicant: Inductive Signature Technologies, Inc.
    Inventors: Steven R. Hilliard, Michael J. Roberts, Geoffrey C. Yerem
  • Normalization of inductive vehicle detector outputs
    Publication number: 20030174071
    Abstract: Methods and apparatus for such that a measurement made for a given vehicle by a given detector is substantially repeatable using either the same detector from one time to another, or using a different detector. In one embodiment, normalization coefficients are determined by measuring one or more common probe vehicles and standardizing the outputs of the detector(s) to give a consistent output. In another embodiment, normalization coefficients are determined by measuring one or more operating or circuit parameters of the detector circuit(s), and compensating the outputs of the detector(s) for variations in these measured parameters.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 18, 2003
    Applicant: Inductive Signature Technologies, Inc.
    Inventors: Steven R. Hilliard, Geoffrey C. Yerem
  • Inductive signature measurement circuit
    Patent number: 6590400
    Abstract: An apparatus for measuring the inductance of a wire-loop with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus measures the effective change in inductance induced in a wire-loop as a vehicle passes over the wire-loop to produce an inductive signature corresponding to a vehicle.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: July 8, 2003
    Assignee: Inductive Signature Technologies
    Inventors: Steven R. Hilliard, Michael J. Roberts, Geoffrey C. Yerem
  • Inductive signature measurement circuit
    Publication number: 20030038624
    Abstract: An apparatus for measuring the inductance of a wire-loop with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus measures the effective change in inductance induced in a wire-loop as a vehicle passes over the wire-loop to produce an inductive signature corresponding to a vehicle.
    Type: Application
    Filed: June 28, 2002
    Publication date: February 27, 2003
    Applicant: Inductive Signature Technologies, Inc.
    Inventors: Steven R. Hilliard, Michael J. Roberts, Geoffrey C. Yerem