Patents by Inventor Pi-Tsang Chang

Pi-Tsang Chang 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 SYSTEM, OPERATION METHOD, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM
    Publication number: 20200387247
    Abstract: A touch system includes a processor and a touch array. The touch array includes touch units. Each of the touch units includes a driving electrode, a first sensing electrode, and a second sensing electrode. A first capacitor is formed between the first sensing electrode and the driving electrode. A second capacitor is formed between the second sensing electrode and the driving electrode. The processor is configured to: determine whether the touch array operates in an underwater mode according to the first original capacitance value and the second original capacitance value; determine whether a conductor touch event occurs according to a first threshold value and a voltage across the first capacitor when the touch array operates in the underwater mode; and determine whether a non-conductor touch event occurs according to a second threshold value and a voltage across the second capacitor when the touch array operates in the underwater mode.
    Type: Application
    Filed: July 17, 2019
    Publication date: December 10, 2020
    Inventors: Hsien-Ying CHOU, Chun-Ta CHEN, Chih-Lin LIAO, Fu-Cheng WEI, Fu-Chiang CHUANG, Pi-Tsang CHANG
  • Touch system, operation method, and non-transitory computer readable storage medium
    Patent number: 10860150
    Abstract: A touch system includes a processor and a touch array. The touch array includes touch units. Each of the touch units includes a driving electrode, a first sensing electrode, and a second sensing electrode. A first capacitor is formed between the first sensing electrode and the driving electrode. A second capacitor is formed between the second sensing electrode and the driving electrode. The processor is configured to: determine whether the touch array operates in an underwater mode according to the first original capacitance value and the second original capacitance value; determine whether a conductor touch event occurs according to a first threshold value and a voltage across the first capacitor when the touch array operates in the underwater mode; and determine whether a non-conductor touch event occurs according to a second threshold value and a voltage across the second capacitor when the touch array operates in the underwater mode.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: December 8, 2020
    Assignees: INTERFACE TECHNOLOGY (CHENGDU) CO., LTD., INTERFACE OPTOELECTRONICS (SHENZHEN) CO., LTD., GENERAL INTERFACE SOLUTION LIMITED
    Inventors: Hsien-Ying Chou, Chun-Ta Chen, Chih-Lin Liao, Fu-Cheng Wei, Fu-Chiang Chuang, Pi-Tsang Chang