Patents by Inventor Jiacong Zhang

Jiacong Zhang 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).

  • Electronic device, control method for electronic device, touch system, and chip system
    Patent number: 12197674
    Abstract: A touch detection drive circuit in an electronic device inputs a touch excitation signal to a touch electrode, and receives a detection signal of the touch electrode. An isolation power supply circuit receives the touch excitation signal and a primary power supply voltage; based on the touch excitation signal in a non-touch detection phase, short-circuits a first reference ground and a second reference ground, stores the primary power supply voltage, and transmits the primary power supply voltage to the touch detection drive circuit; and in a touch detection phase, disconnects the first reference ground from the second reference ground and discharges to the touch detection drive circuit.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: January 14, 2025
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhengyuan Hu, Fengxin Wang, Jiacong Zhang
  • Electronic Device, Control Method for Electronic Device, Touch System, and Chip System
    Publication number: 20230367421
    Abstract: A touch detection drive circuit in an electronic device inputs a touch excitation signal to a touch electrode, and receives a detection signal of the touch electrode. An isolation power supply circuit receives the touch excitation signal and a primary power supply voltage; based on the touch excitation signal in a non-touch detection phase, short-circuits a first reference ground and a second reference ground, stores the primary power supply voltage, and transmits the primary power supply voltage to the touch detection drive circuit; and in a touch detection phase, disconnects the first reference ground from the second reference ground and discharges to the touch detection drive circuit.
    Type: Application
    Filed: September 14, 2021
    Publication date: November 16, 2023
    Inventors: Zhengyuan Hu, Fengxin Wang, Jiacong Zhang