Patents by Inventor Kaichin Li

Kaichin Li 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).

  • Touch panel apparatus and method for detecting distance between touch input points on touch panel
    Patent number: 8803842
    Abstract: There are provided a touch panel apparatus and a method for detecting a distance between touch input points of a touch panel, with which it is possible to detect the distance between two points with accuracy, when two points are touched on the touch panel. Whether or not two points are touched on the touch panel TP is determined based upon a resistance value between terminals opposing each other. When it is determined that two points are touched, the distances between touched two points XDual and YDual are detected. In this situation, the distances between touched two points XDual and YDual are detected based upon the resistance value of the opposing terminals and a pressing force (contact resistance value) of the touch input points.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: August 12, 2014
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Junichi Wakasugi, Kaichin Li
  • TOUCH PANEL APPARATUS AND METHOD FOR DETECTING DISTANCE BETWEEN TOUCH INPUT POINTS ON TOUCH PANEL
    Publication number: 20120262417
    Abstract: There are provided a touch panel apparatus and a method for detecting a distance between touch input points of a touch panel, with which it is possible to detect the distance between two points with accuracy, when two points are touched on the touch panel. Whether or not two points are touched on the touch panel TP is determined based upon a resistance value between terminals opposing each other. When it is determined that two points are touched, the distances between touched two points XDual and YDual are detected. In this situation, the distances between touched two points XDual and YDual are detected based upon the resistance value of the opposing terminals and a pressing force (contact resistance value) of the touch input points.
    Type: Application
    Filed: November 26, 2010
    Publication date: October 18, 2012
    Inventors: Junichi Wakasugi, Kaichin Li