Patents by Inventor Josef Tkadlec

Josef Tkadlec 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).

  • Foreign object detection method and apparatus
    Patent number: 11581756
    Abstract: A system and method to detect the presence of conductive foreign objects for a multi-coil wireless power system is described. A wireless power receiver resonant circuit quality information may be obtained without any costly hardware or termination of power delivery to the power receiver load. The power receiver free-running coil current or voltage may be measured during a very short time window. In this time window, the measurement may be unaffected by transmitter and receiver load due to the transmitter coil disconnection and because the wireless power receiver has sufficient DC-bus capacitance.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: February 14, 2023
    Assignee: NXP USA, Inc.
    Inventors: Zbynek Mynar, Vojtech Musil, Josef Tkadlec
  • FOREIGN OBJECT DETECTION METHOD AND APPARATUS
    Publication number: 20210083524
    Abstract: A system and method to detect the presence of conductive foreign objects for a multi-coil wireless power system is described. A wireless power receiver resonant circuit quality information may be obtained without any costly hardware or termination of power delivery to the power receiver load. The power receiver free-running coil current or voltage may be measured during a very short time window. In this time window, the measurement may be unaffected by transmitter and receiver load due to the transmitter coil disconnection and because the wireless power receiver has sufficient DC-bus capacitance.
    Type: Application
    Filed: August 5, 2020
    Publication date: March 18, 2021
    Inventors: Zbynek Mynar, Vojtech Musil, Josef Tkadlec