Patents by Inventor Pat Richards

Pat Richards 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).

  • Enhanced impedance measurement using CTMU
    Patent number: 11906559
    Abstract: A method and apparatus for measuring an unknown impedance. The apparatus comprises a first input to receive a first signal generated by a first portion of a sensor circuit, the first portion comprising an unknown impedance and a first known resistance, the unknown impedance to vary based upon a phenomenon to be measured by the sensor circuit. The apparatus also comprises a second input to receive a second signal generated by a second portion of the sensor circuit, the second portion of the sensor circuit comprising a known impedance and a second known resistance. And the apparatus comprises control logic to, based on a difference in time at which each of the first input and the second input reach a reference voltage, determine a measurement of the sensor circuit.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: February 20, 2024
    Assignee: Microchip Technology Incorporated
    Inventors: Bogdan Bolocan, Ezana Haile, Pat Richards
  • Enhanced Impedance Measurement using CTMU
    Publication number: 20220413025
    Abstract: A method and apparatus for measuring an unknown impedance. The apparatus comprises a first input to receive a first signal generated by a first portion of a sensor circuit, the first portion comprising an unknown impedance and a first known resistance, the unknown impedance to vary based upon a phenomenon to be measured by the sensor circuit. The apparatus also comprises a second input to receive a second signal generated by a second portion of the sensor circuit, the second portion of the sensor circuit comprising a known impedance and a second known resistance. And the apparatus comprises control logic to, based on a difference in time at which each of the first input and the second input reach a reference voltage, determine a measurement of the sensor circuit.
    Type: Application
    Filed: June 14, 2022
    Publication date: December 29, 2022
    Applicant: Microchip Technology Incorporated
    Inventors: Bogdan Bolocan, Ezana Haile, Pat Richards