Patents by Inventor Haifei Wang

Haifei Wang 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: 12267083
    Abstract: A sampling assembly and a sampling method are provided. A self-calibration unit controls a first switch to be turned on, to enable a first sampling signal to be input to a sampling unit. The sampling unit processes the first sampling signal to obtain a second sampling signal, and outputs the second sampling signal to the self-calibration unit. The self-calibration unit controls the first switch to be turned off, controls a second switch to be turned on, and outputs a first calibration signal to the sampling unit. The sampling unit processes the first calibration signal to obtain a second calibration signal, and outputs the second calibration signal to the self-calibration unit. The self-calibration unit determines an error signal based on the first calibration signal and the second calibration signal. The self-calibration unit obtains a calibrated third sampling signal based on the second sampling signal and the error signal.
    Type: Grant
    Filed: June 28, 2023
    Date of Patent: April 1, 2025
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Haifei Wang, Yan Zhuang, Wan Zhou
  • Publication number: 20230344437
    Abstract: A sampling assembly and a sampling method are provided. A self-calibration unit controls a first switch to be turned on, to enable a first sampling signal to be input to a sampling unit. The sampling unit processes the first sampling signal to obtain a second sampling signal, and outputs the second sampling signal to the self-calibration unit. The self-calibration unit controls the first switch to be turned off, controls a second switch to be turned on, and outputs a first calibration signal to the sampling unit. The sampling unit processes the first calibration signal to obtain a second calibration signal, and outputs the second calibration signal to the self-calibration unit. The self-calibration unit determines an error signal based on the first calibration signal and the second calibration signal. The self-calibration unit obtains a calibrated third sampling signal based on the second sampling signal and the error signal.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Inventors: Haifei Wang, Yan Zhuang, Wan Zhou
  • Patent number: 11528154
    Abstract: A control method includes entering, by a powered device, a first status, controlling, by the powered device, at least one of a plurality of first loads in the powered device to be in a connected state, and controlling, by the powered device, a second load in the powered device to be in a disconnected state.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: December 13, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Haifei Wang
  • Publication number: 20210119813
    Abstract: A control method includes entering, by a powered device, a first status, controlling, by the powered device, at least one of a plurality of first loads in the powered device to be in a connected state, and controlling, by the powered device, a second load in the powered device to be in a disconnected state.
    Type: Application
    Filed: December 30, 2020
    Publication date: April 22, 2021
    Inventor: Haifei Wang
  • Patent number: 10511601
    Abstract: A security control method for a social network user, a social application device and a terminal are provided. The method includes: when information is exchanged between users, a local-end social application acquires the security control authority of a local-end user set by an opposite-end user, and the local-end social application controls, according to the security control authority of the local-end user, the copying operation and the screen capturing operation of the local-end user on the information exchanged.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: December 17, 2019
    Assignee: ZTE CORPORATION
    Inventors: Wei Huang, Haifei Wang, Weiwei Hao
  • Patent number: 10466768
    Abstract: A power sourcing equipment (PSE) chip, and a Power over Ethernet (PoE) device and method are provided, which can determine a status that a peer end is connected to a powered device (PD) when four cable pairs are used to supply power. The PSE chip includes a channel controller, a first channel detector, and a second channel detector. The channel controller sends detection voltages along a first and a second groups of cable pairs in an Ethernet twisted pair; determines a first impedance and a second impedance according to the detection voltages and corresponding currents that are detected; and determines that a first group or a second group of cable pairs is connected to a valid PD according to the impedances and a preset range.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: November 5, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shiyong Fu, Yan Zhuang, Rui Hua, Jianguang Yang, Xueqi Chen, Haifei Wang
  • Publication number: 20170264614
    Abstract: A security control method for a social network user, a social application device and a terminal are provided. The method includes: when information is exchanged between users, a local-end social application acquires the security control authority of a local-end user set by an opposite-end user, and the local-end social application controls, according to the security control authority of the local-end user, the copying operation and the screen capturing operation of the local-end user on the information exchanged.
    Type: Application
    Filed: November 13, 2014
    Publication date: September 14, 2017
    Applicant: ZTE Corporation
    Inventors: Wei HUANG, Haifei WANG, Weiwei HAO
  • Publication number: 20170235358
    Abstract: A power sourcing equipment (PSE) chip, and a Power over Ethernet (PoE) device and method are provided, which can determine a status that a peer end is connected to a powered device (PD) when four cable pairs are used to supply power. The PSE chip includes a channel controller, a first channel detector, and a second channel detector. The channel controller sends detection voltages along a first and a second groups of cable pairs in an Ethernet twisted pair; determines a first impedance and a second impedance according to the detection voltages and corresponding currents that are detected; and determines that a first group or a second group of cable pairs is connected to a valid PD according to the impedances and a preset range.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 17, 2017
    Inventors: Shiyong Fu, Yan Zhuang, Rui Hua, Jianguang Yang, Xueqi Chen, Haifei Wang