Patents by Inventor Chia-Tai Wu

Chia-Tai Wu 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).

  • Micro electro-mechanical system circuit capable of compensating capacitance variation and method thereof
    Patent number: 8665011
    Abstract: A micro electro-mechanical system (MEMS) circuit includes a MEMS differential capacitor, a read-out circuit, a control circuit, and a compensation circuit. The MEMS differential capacitor includes a first capacitor and a second capacitor. The read-out circuit is coupled to the MEMS differential capacitor for reading a difference between the first capacitor and the second capacitor in a zero-G condition, and generating an output signal according to the difference. The control circuit is coupled to the read-out circuit for receiving the output signal and generating a control signal. The compensation circuit is coupled to the control circuit for compensating the MEMS differential capacitor according to the control signal.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: March 4, 2014
    Assignee: RichWave Technology Corp.
    Inventor: Chia-Tai Wu
  • MICRO ELECTRO-MECHANICAL SYSTEM CIRCUIT CAPABLE OF COMPENSATING CAPACITANCE VARIATION AND METHOD THEREOF
    Publication number: 20130049809
    Abstract: A micro electro-mechanical system (MEMS) circuit includes a MEMS differential capacitor, a read-out circuit, a control circuit, and a compensation circuit. The MEMS differential capacitor includes a first capacitor and a second capacitor. The read-out circuit is coupled to the MEMS differential capacitor for reading a difference between the first capacitor and the second capacitor in a zero-G condition, and generating an output signal according to the difference. The control circuit is coupled to the read-out circuit for receiving the output signal and generating a control signal. The compensation circuit is coupled to the control circuit for compensating the MEMS differential capacitor according to the control signal.
    Type: Application
    Filed: November 8, 2011
    Publication date: February 28, 2013
    Inventor: Chia-Tai Wu