Patents Assigned to SENMATRIX SEMICONDUCTOR, INC.
  • Patent number: 9063619
    Abstract: A touch sensing method suitable for a voltage-based capacitive touch device is disclosed. The voltage-based capacitive touch device includes a conductive sensing plane and a plurality of electrodes. The touch sensing method includes steps of: providing pre-determined driving signals to the electrodes, so as to form various types of voltage fields on the conductive sensing plane; measuring, at different time points, the charge quantity stored on the conductive sensing plane for each of the voltage fields, so as to provide a plurality of charge-storage measurement results; estimating whether or not a touch event occurs according to the charge-storage measurement results; and, calculating coordinates of touch inputs according to the charge-storage measurement results if the touch event occurs.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: June 23, 2015
    Assignee: Senmatrix Semiconductor, Inc.
    Inventor: Shih-Tsung Yang
  • Publication number: 20130135248
    Abstract: A touch sensing method suitable for a voltage-based capacitive touch device is disclosed. The voltage-based capacitive touch device includes a conductive sensing plane and a plurality of electrodes. The touch sensing method includes steps of: providing pre-determined driving signals to the electrodes, so as to form various types of voltage fields on the conductive sensing plane; measuring, at different time points, the charge quantity stored on the conductive sensing plane for each of the voltage fields, so as to provide a plurality of charge-storage measurement results; estimating whether or not a touch event occurs according to the charge-storage measurement results; and, calculating coordinates of touch inputs according to the charge-storage measurement results if the touch event occurs.
    Type: Application
    Filed: March 15, 2012
    Publication date: May 30, 2013
    Applicant: SENMATRIX SEMICONDUCTOR, INC.
    Inventor: Shih-Tsung YANG