Patents by Inventor Lionel Nicolas Portmann

Lionel Nicolas Portmann 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).

  • DIGITAL-TO-ANALOG CONTROLLER-REFERENCED TOUCH SENSING SYSTEM, AND RELATED SYSTEMS, METHODS, AND DEVICES
    Publication number: 20220100309
    Abstract: Some disclosed embodiments relate, generally, to shaping a waveform of a reference signal used by a driver of a touch sensor to limit electromagnetic emissions (EME) emitted by a touch sensor during a sensing operation. Some disclosed embodiments relate, generally, to a DAC referenced touch sensor driver and controlling an amount of EME emitted at a touch sensor using shapes of reference signals used by a touch detector to detect touches at the touch sensor. Some disclosed embodiments relate, generally, to compensating for effects of foreign noise at a touch sensor. And more specifically, to changing a shape of a reference signal based on a change to a sampling rate made to compensate for foreign noise.
    Type: Application
    Filed: December 9, 2021
    Publication date: March 31, 2022
    Inventors: Fredrik Jonsson, Richard P. Collins, Lionel Nicolas Portmann
  • Digital-to-analog controller-referenced touch sensing system, and related systems, methods, and devices
    Patent number: 11221708
    Abstract: Some disclosed embodiments relate, generally, to shaping a waveform of a reference signal used by a driver of a touch sensor to limit electromagnetic emissions (EME) emitted by a touch sensor during a sensing operation. Some disclosed embodiments relate, generally, to a DAC referenced touch sensor driver and controlling an amount of EME emitted at a touch sensor using shapes of reference signals used by a touch detector to detect touches at the touch sensor. Some disclosed embodiments relate, generally, to compensating for effects of foreign noise at a touch sensor. And more specifically, to changing a shape of a reference signal based on a change to a sampling rate made to compensate for foreign noise.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: January 11, 2022
    Assignee: Microchip Technology Incorporated
    Inventors: Fredrik Jonsson, Richard P. Collins, Lionel Nicolas Portmann
  • DIGITAL-TO-ANALOG CONTROLLER-REFERENCED TOUCH SENSING SYSTEM, AND RELATED SYSTEMS, METHODS, AND DEVICES
    Publication number: 20200210016
    Abstract: Some disclosed embodiments relate, generally, to shaping a waveform of a reference signal used by a driver of a touch sensor to limit electromagnetic emissions (EME) emitted by a touch sensor during a sensing operation. Some disclosed embodiments relate, generally, to a DAC referenced touch sensor driver and controlling an amount of EME emitted at a touch sensor using shapes of reference signals used by a touch detector to detect touches at the touch sensor. Some disclosed embodiments relate, generally, to compensating for effects of foreign noise at a touch sensor. And more specifically, to changing a shape of a reference signal based on a change to a sampling rate made to compensate for foreign noise.
    Type: Application
    Filed: April 9, 2019
    Publication date: July 2, 2020
    Inventors: Fredrik Jonsson, Richard P. Collins, Lionel Nicolas Portmann