Patents by Inventor Sebastian Walser

Sebastian Walser 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).

  • MEMS microphone and method for self-calibration of the MEMS microphone
    Patent number: 10506356
    Abstract: In a capacitively operating MEMS microphone, by varying the BIAS voltage, the pull-in point is determined and the present pull-in voltage and the corresponding pull-in capacitance between membrane and back electrode are ascertained. From the deviation of the present pull-in point from the values of a first pull-in point, these values being determined after an end test and stored in an internal memory of the MEMS microphone, and the likewise stored values at a first operating point a recalibrated BIAS voltage is determined and set in order thereby to bring the sensitivity closer again to that at the original first operating point.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: December 10, 2019
    Assignee: TDK Corporation
    Inventors: Sebastian Walser, Christian Siegel, Matthias Winter
  • MEMS MICROPHONE AND METHOD FOR SELF-CALIBRATION OF THE MEMS MICROPHONE
    Publication number: 20190132693
    Abstract: In a capacitively operating MEMS microphone, by varying the BIAS voltage, the pull-in point is determined and the present pull-in voltage and the corresponding pull-in capacitance between membrane and back electrode are ascertained. From the deviation of the present pull-in point from the values of a first pull-in point, these values being determined after an end test and stored in an internal memory of the MEMS microphone, and the likewise stored values at a first operating point a recalibrated BIAS voltage is determined and set in order thereby to bring the sensitivity closer again to that at the original first operating point.
    Type: Application
    Filed: March 30, 2017
    Publication date: May 2, 2019
    Inventors: Sebastian Walser, Christian Siegel, Matthias Winter