Patents by Inventor Zhanghui LI

Zhanghui 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).

  • PWM generation circuit, processing circuit and chip
    Patent number: 11791813
    Abstract: Disclosed are a Pulse Width Modulation (PWM) generation circuit, a processing circuit and a chip. The PWM generation circuit is used for controlling a rotation speed of an external motor system. The PWM generation circuit includes a second clock prescaler and a PWM signal generator. A frequency division output end of the second clock prescaler is connected to a data input end of the PWM signal generator. The PWM signal generator includes an output frequency divider and a comparator. A clock output end of the output frequency divider is connected to a comparison input end of the comparator. By means of the technical solution, PWM signals with different duty ratios.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: October 17, 2023
    Assignee: AMICRO SEMICONDUCTOR CO., LTD.
    Inventors: Zhanghui Li, Zaisheng He, Dengke Xu
  • PWM generation circuit, processing circuit and chip
    Publication number: 20220069814
    Abstract: Disclosed are a Pulse Width Modulation (PWM) generation circuit, a processing circuit and a chip. The PWM generation circuit is used for controlling a rotation speed of an external motor system. The PWM generation circuit includes a second clock prescaler and a PWM signal generator. A frequency division output end of the second clock prescaler is connected to a data input end of the PWM signal generator. The PWM signal generator includes an output frequency divider and a comparator. A clock output end of the output frequency divider is connected to a comparison input end of the comparator. By means of the technical solution, PWM signals with different duty ratios.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 3, 2022
    Inventors: Zhanghui LI, Zaisheng HE, Dengke XU