Patents by Inventor Zhenxing Zhang

Zhenxing Zhang 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: 10177561
    Abstract: A selective protection circuit includes a current-limiting module and a control module, where the current-limiting module includes a switch unit, and the switch unit includes a first end, a second end, and a control end; the first end is connected to a positive electrode of a bus voltage of an HVDC power supply, and the second end is connected to a positive electrode of a power supply of a voltage pre-regulator circuit in a load branch connected to the current-limiting module; the control end is connected to the control module; and the control module is configured to output a control signal to the control end when a value of a total current flowing through the switch unit is greater than or equal to a preset threshold, so as to switch off the switch unit.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: January 8, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhenxing Zhang, Jiansheng Xu
  • Patent number: 10139355
    Abstract: A method for imaging three-dimensional topography with high precision, which overcomes the disadvantage and deficiency of low precision in observing three-dimensional topography of hydraulically fractured cracks of rocks, improve the precision in observing three-dimensional topography of cracks in rock hydraulic fracturing test, and benefit for scientifically understanding regular pattern of development of hydraulically fractured cracks of rocks.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: November 27, 2018
    Assignee: Institute of Geology and Geophysics, Chinese Academy of Sciences
    Inventors: Shouding Li, Linan Liu, Xiao Li, Zhongming Zhou, Zhenxing Zhang, Yanhui Liu
  • Publication number: 20180290058
    Abstract: A method is provided for controlling game character movement for a server. The method includes receiving a movement-request data-packet sent by a first client, where the server is configured to manage a character movement on the first client and a character movement on a second client in a same game scene. The method also includes determining whether a target client is the first client or the second client according to the movement-request data-packet, where a character on the target client is a character whose movement needs to be controlled by the first client. Further, the method includes updating a movement identifier of the target client, and broadcasting the updated movement identifier of the target client to the first client and the second client.
    Type: Application
    Filed: June 13, 2018
    Publication date: October 11, 2018
    Inventors: Zhenxing ZHANG, Bin QIU
  • Publication number: 20170346275
    Abstract: A selective protection circuit includes a current-limiting module and a control module, where the current-limiting module includes a switch unit, and the switch unit includes a first end, a second end, and a control end; the first end is connected to a positive electrode of a bus voltage of an HVDC power supply, and the second end is connected to a positive electrode of a power supply of a voltage pre-regulator circuit in a load branch connected to the current-limiting module; the control end is connected to the control module; and the control module is configured to output a control signal to the control end when a value of a total current flowing through the switch unit is greater than or equal to a preset threshold, so as to switch off the switch unit.
    Type: Application
    Filed: August 14, 2017
    Publication date: November 30, 2017
    Inventors: Zhenxing ZHANG, Jiansheng XU
  • Publication number: 20170338802
    Abstract: The present invention provides an actually-measured marine environment data assimilation method based on sequence recursive filtering three-dimensional variation. The method includes: preprocessing actually-measured marine environment data; calculating a target function value; calculating a gradient value of a target function; calculating a minimum value of the target function; extracting space multi-scale information from the actually-measured data; and updating background field data to form a final data assimilation analysis field. The present invention improves the traditional recursive filtering three-dimensional variation method, and sequentially assimilates information with different scales, thereby effectively overcoming the problem that multi-scale information cannot be effectively extracted by a traditional three-dimensional variation method.
    Type: Application
    Filed: December 1, 2014
    Publication date: November 23, 2017
    Inventors: Yuxin Zhao, Chang Liu, Harbin, Heilongjiang Zhang, Liqiang Liu, Gang Li, Feng Gao, Ning Li, Zhifeng Shen, Zhenxing Zhang, Zhao Qi
  • Patent number: 9705303
    Abstract: A high voltage direct current soft-start circuit is provided in which a first end of a first switch is connected to a negative electrode of a high voltage direct current, a first end of a second switch is connected to the negative electrode of the high voltage direct current, and a drive control unit is connected separately to the first switch, the second switch, and a load, where a first part of a connector is connected to the drive control unit, and upon power-on, the first part of the connector communicates with a second part of the connector, to trigger the drive control unit to drive the first switch to turn on. The drive control unit delays a preset time after driving the first switch to turn on, drives the second switch to turn on, and drives the load to start after the second switch is turned on.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 11, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhenxing Zhang, Jiansheng Xu, Nenghu Chen
  • Patent number: 9525133
    Abstract: Disclosed is a resistive random access memory, comprising a substrate, an insulating layer, a bottom electrode, a resistive material film, and a top electrode in an order from bottom to top, wherein the resistive material film is a four-layer structure composed of a same metal oxide; and the four layers in the four-layer structure from bottom to top have resistance values which are increased one after another by more than 10 times, oxygen concentrations which are increased one after another and thickness which are decreased one after another. The present invention may achieve complete formation-rupture of oxygen vacancy conductive filaments (CF) in each layer by dividing the resistive material film of the same metal oxide into four layers according to the different oxygen concentrations, so as to control accurately the resistance values, so that 2-bit storage with high uniformity is achieved.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: December 20, 2016
    Assignee: PEKING UNIVERSITY
    Inventors: Ru Huang, Muxi Yu, Yimao Cai, Zhenxing Zhang, Qiang Li, Ming Li
  • Publication number: 20160225987
    Abstract: Disclosed is a resistive random access memory, comprising a substrate, an insulating layer, a bottom electrode, a resistive material film, and a top electrode in an order from bottom to top, wherein the resistive material film is a four-layer structure composed of a same metal oxide; and the four layers in the four-layer structure from bottom to top have resistance values which are increased one after another by more than 10 times, oxygen concentrations which are increased one after another and thickness which are decreased one after another. The present invention may achieve complete formation-rupture of oxygen vacancy conductive filaments (CF) in each layer by dividing the resistive material film of the same metal oxide into four layers according to the different oxygen concentrations, so as to control accurately the resistance values, so that 2-bit storage with high uniformity is achieved.
    Type: Application
    Filed: March 31, 2014
    Publication date: August 4, 2016
    Inventors: Ru HUANG, Muxi YU, Yimao CAI, Zhenxing ZHANG, Qiang LI, Ming LI
  • Patent number: 9379318
    Abstract: A method for forming a magnetic sensor includes: forming a hard mask film on a tantalum nitride film; forming a patterned photoresist layer on the hard mask film; implementing an isotropic dry etching process to the hard mask film by taking the photoresist layer as a mask, so as to form a hard mask layer; and implementing an etching process to the tantalum nitride film and the magnetic film by taking the hard mask layer as a mask, so as to form a tantalum nitride layer and a magnetic resistive layer. As an isotropic dry etching process is implemented to the hard mask film, the hard mask film located which is above the other sidewalls and is not used for forming the magnetic sensor can be effectively removed. In addition, shadow effect will not take place, thus dimension of the magnetic sensor formed is able to be easily controlled.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: June 28, 2016
    Assignee: Shanghai Huahong Grace Semiconductor Manufacturing Corporation
    Inventors: Lei Xiong, Pei Xi, Zhenxing Zhang
  • Publication number: 20160118782
    Abstract: A high voltage direct current soft-start circuit is provided in which a first end of a first switch is connected to a negative electrode of a high voltage direct current, a first end of a second switch is connected to the negative electrode of the high voltage direct current, and a drive control unit is connected separately to the first switch, the second switch, and a load, where a first part of a connector is connected to the drive control unit, and upon power-on, the first part of the connector communicates with a second part of the connector, to trigger the drive control unit to drive the first switch to turn on. The drive control unit delays a preset time after driving the first switch to turn on, drives the second switch to turn on, and drives the load to start after the second switch is turned on.
    Type: Application
    Filed: December 28, 2015
    Publication date: April 28, 2016
    Inventors: Zhenxing Zhang, Jiansheng Xu, Nenghu Chen
  • Patent number: 9315379
    Abstract: A method of forming a micro-electro-mechanical systems (MEMS) device includes: providing a substrate; forming a tantalum nitride (TaN) layer on the substrate; forming a dielectric anti-reflective coating (DARC) layer on the TaN layer; coating photoresist on the DARC layer and etching the DARC: and TaN layers to form a trench; performing intensified ashing and wet cleaning processes to remove the photoresist and the DARC layer. The DARC layer can prevent the formation of tantalum-containing polymeric substances from a reaction between the TaN layer and the photoresist during the intensified ashing process.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 19, 2016
    Assignee: SHANGHAI HUAHONG GRACE SEMICONDUCTOR MANUFACTURING CORPORATION
    Inventors: Zhenxing Zhang, Pei Xi, Lei Xiong, Jianpeng Wang, Ting Shi
  • Patent number: 9296608
    Abstract: A method of forming a micro-electro-mechanical systems device includes: providing a substrate; sequentially forming a tantalum nitride (TaN) layer and a hard mask layer on the substrate, the hard mask layer having a thickness larger than a thickness of the TaN layer; coating photoresist on the hard mask layer, patterning the photoresist and performing a first etching process on the hard mask layer with the photoresist serving as a mask to form an opening in the hard mask layer, wherein a portion of the thickness of the hard mask layer is remained under the opening; removing the photoresist; and performing a second etching process to remove the portion of the thickness of the hard mask layer under the opening as well as a portion of the TaN layer under the opening to form a trench.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: March 29, 2016
    Assignee: SHANGHAI HUAHONG GRACE SEMICONDUCTOR MANUFACTURING CORPORATION
    Inventors: Zhenxing Zhang, Pei Xi, Lei Xiong
  • Publication number: 20150259198
    Abstract: A method of forming a micro-electro-mechanical systems (MEMS) device includes: providing a substrate; forming a tantalum nitride (TaN) layer on the substrate; forming a dielectric anti-reflective coating (DARC) layer on the TaN layer; coating photoresist on the DARC layer and etching the DARC: and TaN layers to form a trench; performing intensified ashing and wet cleaning processes to remove the photoresist and the DARC layer. The DARC layer can prevent the formation of tantalum-containing polymeric substances from a reaction between the TaN layer and the photoresist during the intensified ashing process.
    Type: Application
    Filed: December 18, 2014
    Publication date: September 17, 2015
    Inventors: Zhenxing Zhang, Pei Xi, Lei Xiong, Jianpeng Wang, Ting Shi
  • Publication number: 20150191348
    Abstract: A method of forming a micro-electro-mechanical systems device includes: providing a substrate; sequentially forming a tantalum nitride (TaN) layer and a hard mask layer on the substrate, the hard mask layer having a thickness larger than a thickness of the TaN layer; coating photoresist on the hard mask layer, patterning the photoresist and performing a first etching process on the hard mask layer with the photoresist serving as a mask to form an opening in the hard mask layer, wherein a portion of the thickness of the hard mask layer is remained under the opening; removing the photoresist; and performing a second etching process to remove the portion of the thickness of the hard mask layer under the opening as well as a portion of the TaN layer under the opening to form a trench.
    Type: Application
    Filed: December 18, 2014
    Publication date: July 9, 2015
    Inventors: Zhenxing Zhang, Pei Xi, Lei Xiong
  • Publication number: 20150194600
    Abstract: A method for forming a magnetic sensor includes: forming a hard mask film on a tantalum nitride film; forming a patterned photoresist layer on the hard mask film; implementing an isotropic dry etching process to the hard mask film by taking the photoresist layer as a mask, so as to form a hard mask layer; and implementing an etching process to the tantalum nitride film and the magnetic film by taking the hard mask layer as a mask, so as to form a tantalum nitride layer and a magnetic resistive layer. As an isotropic dry etching process is implemented to the hard mask film, the hard mask film located which is above the other sidewalls and is not used for forming the magnetic sensor can be effectively removed. In addition, shadow effect will not take place, thus dimension of the magnetic sensor formed is able to be easily controlled.
    Type: Application
    Filed: December 29, 2014
    Publication date: July 9, 2015
    Applicant: Shanghai Huahong Grace Semiconductor Manufacturing Corporation
    Inventors: Lei XIONG, Pei XI, Zhenxing ZHANG
  • Patent number: 8302219
    Abstract: A portable shower stall suitable for a wheelchair-bound person to bathe with the help of an assistant, comprising of a self-supporting flexible shower base, a modular shower enclosure standing freely within the shower base, a hand-held sprayer connected to a kitchen faucet via hose, and a pump with puddle scoop attachment that drains the shower base. One sidewall of the shower base can be pressed down and fastened to the shower base bottom to facilitate wheelchair access, but it can be released and restored to upright position for water retention. Shower enclosure consists of two identical bi-fold shower screens clamping to each other to form a splash-proof rectangle. However, one or both screens can be removed from the shower base to provide access to the wheelchair-bound person.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: November 6, 2012
    Inventors: Shilong Tang, Zhenxing Zhang, Ivory Jenny Tang, Waverly Vivian Tang
  • Publication number: 20120036627
    Abstract: A portable shower stall suitable for a wheelchair-bound person to bathe with the help of an assistant, comprising of a self-supporting flexible shower base, a modular shower enclosure standing freely within the shower base, a hand-held sprayer connected to a kitchen faucet via hose, and a pump with puddle scoop attachment that drains the shower base. One sidewall of the shower base can be pressed down and fastened to the shower base bottom to facilitate wheelchair access, but it can be released and restored to upright position for water retention. Shower enclosure consists of two identical bi-fold shower screens clamping to each other to form a splash-proof rectangle. However, one or both screens can be removed from the shower base to provide access to the wheelchair-bound person.
    Type: Application
    Filed: August 13, 2010
    Publication date: February 16, 2012
    Inventors: Shilong Tang, Zhenxing Zhang, Ivory Jenny Tang, Waverly Vivian Tang