Patents by Inventor Konstantin V. Grigoryan

Konstantin V. Grigoryan 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).

  • Parallel arc detection using discrete wavelet transforms
    Patent number: 8170816
    Abstract: An apparatus to perform parallel arc fault current interruption (AFCI) is provided. The apparatus includes a current sensing device disposed in the electrical circuit, a detection unit configured to receive an output signal produced by the current sensing device and to output a secondary signal based on the output signal, a microcontroller coupled to the detection unit, configured to receive and to decompose the secondary signal via discrete wavelet transforms to thereby obtain discrete wavelet coefficients, to compute a sum of the discrete wavelet coefficients, and to compare the sum of the discrete wavelet coefficients to a predetermined threshold, and to generate a trip signal when the sensed load current is above a predetermined threshold and the sum of the discrete wavelet coefficients cooperatively indicate that predetermined threshold conditions are satisfied.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: May 1, 2012
    Assignee: General Electric Company
    Inventors: Sriram Changali, John Kenneth Hooker, Konstantin V. Grigoryan, Scott Jeffrey Hall
  • PARALLEL ARC DETECTION USING DISCRETE WAVELET TRANSFORMS
    Publication number: 20100165521
    Abstract: An apparatus to perform parallel arc fault current interruption (AFCI).
    Type: Application
    Filed: December 29, 2008
    Publication date: July 1, 2010
    Inventors: Sriram CHANGALI, John Kenneth Hooker, Konstantin V. Grigoryan, Scott Jeffrey Hall