Patents by Inventor Boon Loong Woo

Boon Loong Woo 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).

  • Methods and systems for adaptive touchscreen control
    Patent number: 11822746
    Abstract: A method for operating a display includes receiving a horizontal synchronization (HSYNC) signal from a display driver of the display, the HSYNC signal including a plurality of pulses; measuring a parameter of the HSYNC signal within a frame; and initiating a touch scan on a touch sensing panel of the display based on the measured parameter.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: November 21, 2023
    Assignee: STMicroelectronics Asia Pacific Pte Ltd.
    Inventors: Min Sang Kim, Kien Beng Tan, Eng Jye Ng, Boon Loong Woo, Tong Tee Tan
  • METHOD OF IMPROVED COMPUTATION OF TOUCH COORDINATES FOR FOUR-WIRE RESISTIVE TOUCH SCREENS
    Publication number: 20100164905
    Abstract: A method for calculating coordinates and touch pressure on a four-wire resistive touch screen includes applying a voltage gradient across a flexible resistive sheet in a touch screen and measuring the voltage where the screen comes in contact with another screen via analog to digital couplings to the other screen. The touch pressure is acquired by applying a higher voltage potential to one resistive sheet and a lower voltage potential to the other sheet so that current flows between the sheets at the point of contact between the sheets. A voltage on each sheet is then measured at the point of contact shared by the sheets. The measured voltages are used to calculate the touch pressure.
    Type: Application
    Filed: December 29, 2009
    Publication date: July 1, 2010
    Applicant: STMICROELECTRONICS ASIA PACIFIC PTE, LTD.
    Inventors: Boon Loong Woo, Gopalakrishnan Srinivasan