Patents by Inventor Chien-Lung Liu

Chien-Lung 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).

  • Patent number: 11081959
    Abstract: A power conversion device is provided. The power conversion device includes a path module and a control module. The path module includes a first path and a second path. The control module generates a first control signal for controlling the first path and a second control signal for controlling the second path. When an input voltage value received by the path module is less than a first threshold and a boosting operation is performed for the first time, the control module generates the first control signal to interrupt the first path to stop outputting the input power, and adjusts a duty cycle of the second control signal to a first duty cycle based on an input current value and the input voltage value, so as to stabilize an output voltage value.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: August 3, 2021
    Assignee: Chicony Power Technology Co., Ltd.
    Inventors: Jung-Ching Chiu, Chien-Lung Liu, You-Chen Kuo
  • Publication number: 20210135572
    Abstract: A power conversion device is provided. The power conversion device includes a path module and a control module. The path module includes a first path and a second path. The control module generates a first control signal for controlling the first path and a second control signal for controlling the second path. When an input voltage value received by the path module is less than a first threshold and a boosting operation is performed for the first time, the control module generates the first control signal to interrupt the first path to stop outputting the input power, and adjusts a duty cycle of the second control signal to a first duty cycle based on an input current value and the input voltage value, so as to stabilize an output voltage value.
    Type: Application
    Filed: January 21, 2020
    Publication date: May 6, 2021
    Applicant: Chicony Power Technology Co., Ltd.
    Inventors: Jung-Ching Chiu, Chien-Lung Liu, You-Chen Kuo
  • Patent number: 10992227
    Abstract: A power supply apparatus and a control method thereof are provided. Power conversion is performed according to a switching signal group to provide an output voltage and an output current. An error value between the output voltage and a reference voltage is multiplied by a proportional parameter to obtain a proportional result. The error value is multiplied by an integration parameter to obtain a first calculation value which is then accumulated over time to obtain an integration result. When a slope of the output current is greater than a reference slope and a slope of the output voltage is negative, the slope of the output voltage is multiplied by a differential parameter to obtain a second calculation value which is then added to the integration result over time. A duty cycle of the switching signal group is adjusted according to the sum of the proportional result and the integration result.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: April 27, 2021
    Assignee: Chicony Power Technology Co., Ltd.
    Inventors: Jung-Ching Chiu, Chien-Lung Liu, You-Chen Kuo
  • Publication number: 20210050780
    Abstract: A power supply apparatus and a control method thereof are provided. Power conversion is performed according to a switching signal group to provide an output voltage and an output current. An error value between the output voltage and a reference voltage is multiplied by a proportional parameter to obtain a proportional result. The error value is multiplied by an integration parameter to obtain a first calculation value which is then accumulated over time to obtain an integration result. When a slope of the output current is greater than a reference slope and a slope of the output voltage is negative, the slope of the output voltage is multiplied by a differential parameter to obtain a second calculation value which is then added to the integration result over time. A duty cycle of the switching signal group is adjusted according to the sum of the proportional result and the integration result.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 18, 2021
    Applicant: Chicony Power Technology Co., Ltd.
    Inventors: Jung-Ching Chiu, Chien-Lung Liu, You-Chen Kuo
  • Patent number: 10833604
    Abstract: A power converter device includes a first phase-shift full-bridge circuit, a second phase-shift full-bridge circuit, a detector circuit, and a control circuit. The control circuit controls the first phase-shift full bridge circuit and the second phase-shift full bridge circuit. The control circuit disables the second phase-shift full-bridge circuit when the output current is less than a first predetermined value. The control circuit enables the second phase-shift full-bridge circuit when the output current is equal to or greater than the first predetermined value. The control circuit controls a synchronous switching circuit of the second phase-shift full-bridge circuit to operate in a traditional control mode when the output current is equal to or greater than a second predetermined value and a duty cycle of a phase-shift switching circuit is equal to or greater than a third predetermined value. The second predetermined value is greater than the first predetermined value.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: November 10, 2020
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Jung-Ching Chiu, Chien-Lung Liu, You-Chen Kuo
  • Patent number: 10608458
    Abstract: A charging apparatus includes a power requirement unit and a power supply unit. The power requirement unit has a first sensing module and a first control module. The first sensing module senses an electric parameter value of a load. The first control module receives the electric parameter value. The power supply unit has a second control module and a power switching module. The second control module receives the electric parameter value to switch the power switching module according to an accumulated difference value produced by the electric parameter value and a target electric parameter value, thereby controlling the electric parameter value to be equal to the target electric parameter value.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: March 31, 2020
    Assignee: Chicony Power Technology
    Inventors: Jun-Han Chen, Chien-Lung Liu
  • Publication number: 20190305575
    Abstract: A charging apparatus includes a power requirement unit and a power supply unit. The power requirement unit has a first sensing module and a first control module. The first sensing module senses an electric parameter value of a load. The first control module receives the electric parameter value. The power supply unit has a second control module and a power switching module. The second control module receives the electric parameter value to switch the power switching module according to an accumulated difference value produced by the electric parameter value and a target electric parameter value, thereby controlling the electric parameter value to be equal to the target electric parameter value.
    Type: Application
    Filed: August 2, 2018
    Publication date: October 3, 2019
    Inventors: Jun-Han CHEN, Chien-Lung LIU
  • Publication number: 20150105019
    Abstract: A wireless communication device and a wireless paring method thereof provided. The method is suitable for a first wireless communication device. The first wireless communication device includes a storing module storing a first operation system(OS) and a second OS. The method includes: executing the first OS, and executing a wireless paring of the first wireless communication device and a second wireless communication device through the first OS; storing a paring information into a sharing information backup region of the storing module through the first OS; executing the second OS, and reading the paring information from the sharing information backup region through the second OS; and establishing a wireless connection between the first wireless communication device and the second wireless communication device through the second OS according to the paring information.
    Type: Application
    Filed: December 10, 2013
    Publication date: April 16, 2015
    Applicant: ACER INCORPORATED
    Inventors: Chien-Lung Liu, Ching-Ho Tsai, Po-Chang Yang, Harianto Siek