Patents by Inventor Lixiang Zheng

Lixiang Zheng 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).

  • Self-loop detection method and apparatus for charging device
    Patent number: 10742057
    Abstract: A self-loop detection method for a charging device includes switching a positive signal cable Do and a negative signal cable Do from a connected state to a disconnected state; and detecting whether a positive signal cable Di and a negative signal cable Di are switched from a connected state to a disconnected state; and if yes, determining that a self-loop exists in the charging device.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: August 11, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wanbao Peng, Fengxin Wang, Lixiang Zheng, Shengcai Liu
  • Systems and methods for charging via USB port
    Patent number: 10554060
    Abstract: A power supply terminal, and a charging control method are disclosed. The power supply terminal includes a USB port, a switch, a power source module, and a processor, where the USB port is configured to connect to a power receiving terminal; one end of the power source module is connected to a power source pin VBUS of the USB port and is configured to charge the power receiving terminal by using the power source pin VBUS; a first end of the switch is connected to the data pin D+ and a second end of the switch is connected to the data pin D?; when the switch is on and the processor detects that a drop amplitude of the output voltage of the power source module exceeds a preset value, in a process in which the power source module outputs a voltage to charge the power receiving terminal.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: February 4, 2020
    Assignee: Huawei Device Co., Ltd.
    Inventors: Changqi Li, Yanguo He, Lixiang Zheng, Yanfeng Zhao
  • Self-Loop Detection Method and Apparatus for Charging Device
    Publication number: 20180054067
    Abstract: A self-loop detection method for a charging device includes switching a positive signal cable Do and a negative signal cable Do from a connected state to a disconnected state; and detecting whether a positive signal cable Di and a negative signal cable Di are switched from a connected state to a disconnected state; and if yes, determining that a self-loop exists in the charging device.
    Type: Application
    Filed: March 10, 2015
    Publication date: February 22, 2018
    Inventors: Wanbao Peng, Fengxin Wang, Lixiang Zheng, Shengcai Liu
  • Mobile power supply terminal and power supply method thereof
    Patent number: 9831698
    Abstract: A mobile power supply terminal and a power supply method is presented. For the mobile power supply terminal, a trigger circuit and a control circuit are added to a conventional device. After a to-be-charged device is connected to the mobile terminal, one end of a power supply interface generates a level signal, to make the trigger circuit generate a trigger signal; and then the control circuit controls, according to the trigger signal, the mobile power supply terminal to enter a power supply mode, and controls a power supply source to charge the to-be-charged device using the power supply interface.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: November 28, 2017
    Assignee: HUAWEI DEVICE CO., LTD.
    Inventors: Yanguo He, Lixiang Zheng
  • POWER SUPPLY TERMINAL, AND CHARGING CONTROL METHOD AND APPARATUS
    Publication number: 20160181843
    Abstract: A power supply terminal, and a charging control method are disclosed. The power supply terminal includes a USB port, a switch, a power source module, and a processor, where the USB port is configured to connect to a power receiving terminal; one end of the power source module is connected to a power source pin VBUS of the USB port and is configured to charge the power receiving terminal by using the power source pin VBUS; a first end of the switch is connected to the data pin D+ and a second end of the switch is connected to the data pin D?; when the switch is on and the processor detects that a drop amplitude of the output voltage of the power source module exceeds a preset value, in a process in which the power source module outputs a voltage to charge the power receiving terminal.
    Type: Application
    Filed: July 22, 2014
    Publication date: June 23, 2016
    Inventors: Changqi LI, Yanguo HE, Lixiang ZHENG, Yanfeng ZHAO
  • Mobile Power Supply Terminal and Power Supply Method Thereof
    Publication number: 20160072330
    Abstract: A mobile power supply terminal and a power supply method is presented. For the mobile power supply terminal, a trigger circuit and a control circuit are added to a conventional device. After a to-be-charged device is connected to the mobile terminal, one end of a power supply interface generates a level signal, to make the trigger circuit generate a trigger signal; and then the control circuit controls, according to the trigger signal, the mobile power supply terminal to enter a power supply mode, and controls a power supply source to charge the to-be-charged device using the power supply interface.
    Type: Application
    Filed: November 16, 2015
    Publication date: March 10, 2016
    Inventors: Yanguo He, Lixiang Zheng