Patents by Inventor Joseph Comparetto

Joseph Comparetto 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).

  • METHOD OF MONITORING THE POSITION OF A VALVE
    Publication number: 20130305825
    Abstract: A method of detecting a valve position includes imparting a vibration-inducing energy to a valve, detecting vibration of the valve and producing a sensor signal corresponding to the vibration of the valve, processing the sensor signal determining a measured response of the valve, and comparing the measured response to one or more predetermined characteristic frequencies for selected valve positions to determine the position of the valve.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 21, 2013
    Inventors: Joseph Comparetto, Kenneth Wilson
  • Mixed-mode (current-voltage) audio amplifier
    Patent number: 7053705
    Abstract: A method and system for providing a mixed-mode (current- and voltage-source) audio amplifier is disclosed. The mixed-mode amplifier includes a voltage sensing feedback path including a first network comprising at least one circuit; and a current sensing feedback path including a second network comprising at least one circuit. According to the method and system disclosed herein, the first and second networks vary an output impedance or transconductance of the amplifier as a function of frequency of the input voltage signal, such that at a first frequency range, the amplifier operates substantially as a current amplifier, and at a second frequency range, the amplifier operates substantially as a voltage amplifier, thereby inheriting distortion reduction of the current amplifier and stability of the voltage amplifier.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 30, 2006
    Assignee: Tymphany Corporation
    Inventors: John J. Hench, Joseph Comparetto
  • Mixed-mode (current-voltage) audio amplifier
    Publication number: 20050134374
    Abstract: A method and system for providing a mixed-mode (current- and voltage-source) audio amplifier is disclosed. The mixed-mode amplifier includes a voltage sensing feedback path including a first network comprising at least one circuit; and a current sensing feedback path including a second network comprising at least one circuit. According to the method and system disclosed herein, the first and second networks vary an output impedance or transconductance of the amplifier as a function of frequency of the input voltage signal, such that at a first frequency range, the amplifier operates substantially as a current amplifier, and at a second frequency range, the amplifier operates substantially as a voltage amplifier, thereby inheriting distortion reduction of the current amplifier and stability of the voltage amplifier.
    Type: Application
    Filed: December 23, 2003
    Publication date: June 23, 2005
    Inventors: John Hench, Joseph Comparetto