Patents by Inventor Chua Tiong Kee

Chua Tiong Kee 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).

  • Capacitive sensor circuit
    Patent number: 9618367
    Abstract: A capacitive sensor circuit includes a sensor for providing a sensing voltage, a pre-processing circuit electrically connected to the sensor via an input connection line, and an impedance transformation circuit electrically connected between the input connection line and a bias point. The impedance transformation circuit includes a first impedance unit and a second impedance unit. The first impedance unit includes a first current mirror, and the second impedance unit includes a second current mirror configured as an invented matching current mirror of the first current mirror. The first current mirror is electrically connected to the input connection line, and the second current mirror is electrically connected to the bias point to receive a bias voltage.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: April 11, 2017
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Tan Siew Seong, Chua Tiong Kee
  • Capacitive Sensor Circuit
    Publication number: 20150145527
    Abstract: A capacitive sensor circuit includes a sensor for providing a sensing voltage, a pre-processing circuit electrically connected to the sensor via an input connection line, and an impedance transformation circuit electrically connected between the input connection line and a bias point. The impedance transformation circuit includes a first impedance unit and a second impedance unit. The first impedance unit includes a first current mirror, and the second impedance unit includes a second current mirror configured as an invented matching current mirror of the first current mirror. The first current mirror is electrically connected to the input connection line, and the second current mirror is electrically connected to the bias point to receive a bias voltage.
    Type: Application
    Filed: November 27, 2014
    Publication date: May 28, 2015
    Applicant: AAC Technologies Pte. Ltd.
    Inventors: Tan Siew Seong, Chua Tiong Kee