Patents by Inventor Yaoguo Zhang

Yaoguo 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).

  • Publication number: 20250068272
    Abstract: The present application discloses a capacitive screen, a method for its interaction with a stylus, and a storage medium. The capacitive screen includes a touch control chip and a screen coil. The touch chip generates a first current signal, which the screen coil, integrated as a metal coil, converts into a first electromagnetic signal. This signal is sent to the stylus, which then returns a second electromagnetic signal to the screen coil. The screen coil converts this into a second current signal for the touch chip, which calculates the distance between the screen and stylus. This invention enables real-time distance monitoring and interaction between the screen and stylus with low cost and power consumption.
    Type: Application
    Filed: October 16, 2024
    Publication date: February 27, 2025
    Inventors: Yaoguo Zhang, Haifeng Shen, Bo Xia, Bo Nie, Congqing Yu, Guofan Cheng, Ruiming Ni
  • Publication number: 20240411205
    Abstract: The present application discloses an anti-shake motor, a camera module, and electronic equipment. The anti-shake motor includes a base, an anti-shake bracket, a circuit board, and a conductive electrode plate. The anti-shake bracket is movably set on the base within a predetermined plane and has a conductive magnetic component. The circuit board is set on the base with a coil that drives the magnetic component to move the anti-shake bracket within the predetermined plane. The conductive electrode plate is set on the circuit board, forming a capacitor with the magnetic component, which is electrically connected to the circuit board to output the capacitive signal formed with the conductive electrode plate. The anti-shake motor, camera module, and electronic equipment provided in this embodiment can achieve closed-loop control of the anti-shake motor while minimizing internal space occupation.
    Type: Application
    Filed: August 18, 2024
    Publication date: December 12, 2024
    Inventors: Yulin Zhang, Yaoguo Zhang, Bo Xia, Bo Nie
  • Publication number: 20240272214
    Abstract: The present invention relates to the microelectronics domain, specifically to a capacitance measurement circuit and method designed to enhance precision in capacitance measurements. The circuit comprises a capacitor under test, which is connected at one end to the output of an excitation circuit and at the other end to the input of an adjustment circuit. It includes a first timing switch circuit connected between the input of a first amplification circuit and the output of the adjustment circuit, and a second timing switch circuit connected between the input of a second amplification circuit and the output of the adjustment circuit, with the first and second timing switch circuits operating alternately. The invention also features a capacitance detection circuit that consists of a differential amplifier and a comparator.
    Type: Application
    Filed: April 18, 2024
    Publication date: August 15, 2024
    Inventors: Yaoguo Zhang, Bo Xia, Bo Nie, Yulin Zhang
  • Publication number: 20240146169
    Abstract: The invention provides a focusing motor, a closed-loop control method for the focusing motor, and a camera device. The focusing motor includes a mover bracket and a mover plate mounted thereon, a stator and first stator plates and second stator plates mounted thereon, and a processing unit connected to the mover pole plate, the first stator plate and the second stator plate. The mover pole plate is positioned opposite the first stator plate and the second stator plate, and the facing areas change with the movement of the mover bracket. The processing unit controls the movement of the mover bracket in the focusing direction based on the capacitance signals formed by the mover pole plate and the first stator plate as well as the capacitance signals formed by the second stator plate.
    Type: Application
    Filed: December 30, 2023
    Publication date: May 2, 2024
    Inventors: Yaoguo Zhang, Bo Xia, Yulin Zhang
  • Patent number: 11671709
    Abstract: In accordance with the present disclosure, a method for controlling an anti-vibration actuator is provided such that the position of the applied opposite rotation in a gyro stabilization process can be measured using capacitance sensing. In some embodiments, a rotor plate attached to a rotor and a stator plate attached to a stator can be used to create a capacitance. When the rotor moves, a distance change value of the rotor can be calculated based on the capacitance measured between the rotor plate and the stator plate. In these embodiments, the cost and the form factor of the aforementioned anti-vibration actuator are reduced compared to implementation of magnetic field sensors in the anti-vibration actuator.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: June 6, 2023
    Assignee: CHIPSEMI SEMICONDUCTOR (NINGBO) CO., LTD.
    Inventors: Yaoguo Zhang, Bo Xia, Yulin Zhang
  • Patent number: 11658604
    Abstract: Embodiments provide controlling an actuator such that inaccurate actuator control caused by the heat created when the actuator moves can be compensated. In some embodiments, a temperature sensor is implemented in an actuator controller outside of the actuator, and the temperature sensor is connected to the actuator through heat conductive materials. In these embodiments, the cost and the form factor of the aforementioned actuator is reduced compared to implementation of temperature sensors within the actuator.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: May 23, 2023
    Assignee: CHIPSEMI SEMICONDUCTOR (NINGBO) CO., LTD.
    Inventor: Yaoguo Zhang
  • Publication number: 20220187563
    Abstract: In accordance with the present disclosure, a method for controlling an autofocus actuator is provided such that the actual position of the autofocus actuator can be measured using capacitance sensing. In some embodiments, a rotor plate attached to a rotor and a stator plate attached to a stator in the autofocus actuator can be used to create a capacitance. When the rotor moves, a capacitance change value between the rotor plate and the stator plate can be measured. In these embodiments, the cost and the form factor of the aforementioned autofocus actuator are reduced compared to implementation of magnetic field sensors in the autofocus actuator.
    Type: Application
    Filed: December 14, 2021
    Publication date: June 16, 2022
    Inventors: Yaoguo Zhang, Bo Xia, Yulin Zhang
  • Publication number: 20220191373
    Abstract: In accordance with the present disclosure, a method for controlling an anti-vibration actuator is provided such that the position of the applied opposite rotation in a gyro stabilization process can be measured using capacitance sensing. In some embodiments, a rotor plate attached to a rotor and a stator plate attached to a stator can be used to create a capacitance. When the rotor moves, a distance change value of the rotor can be calculated based on the capacitance measured between the rotor plate and the stator plate. In these embodiments, the cost and the form factor of the aforementioned anti-vibration actuator are reduced compared to implementation of magnetic field sensors in the anti-vibration actuator.
    Type: Application
    Filed: December 14, 2021
    Publication date: June 16, 2022
    Inventors: Yaoguo Zhang, Bo Xia, Yulin Zhang
  • Publication number: 20220166367
    Abstract: Embodiments provide controlling an actuator such that inaccurate actuator control caused by the heat created when the actuator moves can be compensated. In some embodiments, a temperature sensor is implemented in an actuator controller outside of the actuator, and the temperature sensor is connected to the actuator through heat conductive materials. In these embodiments, the cost and the form factor of the aforementioned actuator is reduced compared to implementation of temperature sensors within the actuator.
    Type: Application
    Filed: November 19, 2021
    Publication date: May 26, 2022
    Inventor: Yaoguo Zhang