Patents by Inventor Yang-Chen LIU

Yang-Chen LIU 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 circuits for sensing isolated power converter output voltage across the isolation barrier
    Patent number: 11990843
    Abstract: A control circuit for an isolated power converter includes a first sensing circuit that senses a secondary side output voltage and produces a pulse width modulation (PWM) signal having a duty cycle that is proportional to a value of the secondary side output voltage. The PWM is transferred a cross the converter isolation barrier to the primary side, and a primary side circuit receives the PWM signal and outputs a control signal. A controller determines the value of the secondary side output voltage from the control signal and uses the value to control primary side power switching devices of the isolated power converter to regulate the secondary side output voltage at a selected value.
    Type: Grant
    Filed: July 24, 2023
    Date of Patent: May 21, 2024
    Assignee: Queen's University at Kingston
    Inventors: Yan-Fei Liu, Yang Chen, Binghui He, Wenbo Liu, Bo Sheng
  • Methods and Circuits for Sensing Isolated Power Converter Output Voltage Across the Isolation Barrier
    Publication number: 20240097573
    Abstract: A control circuit for an isolated power converter includes a first sensing circuit that senses a secondary side output voltage and produces a pulse wave modulation (PWM) signal having a duty cycle that is proportional to a value of the secondary side output voltage. The PWM is transferred across the converter isolation barrier to the primary side, and a primary side circuit receives the PWM signal and outputs a control signal. A controller determines the value of the secondary side output voltage from the control signal and uses the value to control primary side power switching devices of the isolated power converter to regulate the secondary side output voltage at a selected value.
    Type: Application
    Filed: July 24, 2023
    Publication date: March 21, 2024
    Inventors: Yan-Fei Liu, Yang Chen, Binghui He, Wenbo Liu, Bo Sheng
  • Computer arbitration system, bandwidth, allocation apparatus, and method thereof
    Patent number: 9330038
    Abstract: The bandwidth allocation apparatus includes a high bandwidth arbitration module, a low bandwidth arbitration module and a multiplexer. The high bandwidth arbitration module is used to select one downstream device from the high bandwidth downstream device group for allowing uplink. The low bandwidth arbitration module is used to select one downstream device from the low bandwidth downstream device group for allowing uplink. The multiplexer selects the one of the access requests from the high bandwidth arbitration module or the low bandwidth arbitration module for allowing to uplink the access request to an upstream device. The access transmission times of the high bandwidth arbitration module and the low bandwidth arbitration module are counted respectively by a counting circuit.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: May 3, 2016
    Assignee: ASMEDIA TECHNOLOGY INC.
    Inventors: Yang-Chen Liu, Hui-Yu Tang, Li-Feng Kuo
  • COMPUTER ARBITRATION SYSTEM, BANDWIDTH, ALLOCATION APPARATUS, AND METHOD THEREOF
    Publication number: 20140189189
    Abstract: The bandwidth allocation apparatus includes a high bandwidth arbitration module, a low bandwidth arbitration module and a multiplexer. The high bandwidth arbitration module is used to select one downstream device from the high bandwidth downstream device group for allowing uplink. The low bandwidth arbitration module is used to select one downstream device from the low bandwidth downstream device group for allowing uplink. The multiplexer selects the one of the access requests from the high bandwidth arbitration module or the low bandwidth arbitration module for allowing to uplink the access request to an upstream device. The access transmission times of the high bandwidth arbitration module and the low bandwidth arbitration module are counted respectively by a counting circuit.
    Type: Application
    Filed: December 16, 2013
    Publication date: July 3, 2014
    Applicant: ASMedia Technology Inc.
    Inventors: Yang-Chen LIU, Hui-Yu TANG, Li-Feng KUO