Patents by Inventor John Pretzer

John Pretzer 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).

  • Patent number: 7136513
    Abstract: This is a security and identification system designed to obtain improved images for use by real-time facial recognition and identification systems for screening individuals passing through secure entry or checkpoints such as airport passenger terminals, government offices, and other secure locations. The system detects the presence of a subject at the checkpoint, interactively instructs the subject to stop and move into position for proper identification and recognition, analyzes the facial features of the subject as (s)he passes through the checkpoint, and compares the features of the subject with those in a database. The system then generates different signals depending upon whether or not the subject is recognized. In one aspect of the invention, different methods and apparatus are provided for compensating for low ambient light so as to improve the quality of the facial image of the subject that is obtained.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: November 14, 2006
    Assignee: Pelco
    Inventors: Glenn Waehner, Erik Henry Tews, David L. A. Toste, Shane Compton, Joshua Cockrum, Sam Grigorian, Matthew Larson, John Pretzer, Joshua Houser, James Arbuckle, William S. Arbuckle, David McDonald
  • Publication number: 20030142853
    Abstract: This is a security and identification system designed to obtain improved images for use by real-time facial recognition and identification systems for screening individuals passing through secure entry or checkpoints such as airport passenger terminals, government offices, and other secure locations. The system detects the presence of a subject at the checkpoint, interactively instructs the subject to stop and move into position for proper identification and recognition, analyzes the facial features of the subject as (s)he passes through the checkpoint, and compares the features of the subject with those in a database. The system then generates different signals depending upon whether or not the subject is recognized. In one aspect of the invention, different methods and apparatus are provided for compensating for low ambient light so as to improve the quality of the facial image of the subject that is obtained.
    Type: Application
    Filed: October 25, 2002
    Publication date: July 31, 2003
    Applicant: Pelco
    Inventors: Glenn Waehner, Erik Henry Tews, David L. A. Toste, Shane Compton, Joshua Cockrum, Sam Grigorian, Matthew Larson, John Pretzer, Joshua Houser, James Arbuckle, William S. Arbuckle, David McDonald
  • Patent number: 6566839
    Abstract: The present invention is a method and apparatus that allows the torque of an electric motor to be increased allowing the motor to be operated at higher speeds and at higher torque without raising the supply voltage, thus allowing for a wider dynamic range of speed and torque to be realized. This is accomplished by connecting one or more capacitors in series with each motor winding, and selectively activating the capacitors at higher speeds where the frequency of the motor resonates with that of the capacitor(s). Switching a capacitor into the circuit with the motor in a particular frequency range allows higher currents to flow through the motor windings resulting in higher torque.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: May 20, 2003
    Assignee: Pelco
    Inventors: Daniel Robert DaSilva, John Pretzer, Glenn Waehner
  • Publication number: 20030001532
    Abstract: The present invention is a method and apparatus that allows the torque of an electric motor to be increased allowing the motor to be operated at higher speeds and at higher torque without raising the supply voltage, thus allowing for a wider dynamic range of speed and torque to be realized. This is accomplished by connecting one or more capacitors in series with each motor winding, and selectively activating the capacitors at higher speeds where the frequency of the motor resonates with that of the capacitor(s). Switching a capacitor into the circuit with the motor in a particular frequency range allows higher currents to flow through the motor windings resulting in higher torque.
    Type: Application
    Filed: June 28, 2001
    Publication date: January 2, 2003
    Applicant: Pelco
    Inventors: Daniel Robert DaSilva, John Pretzer, Glenn Waehner