Patents by Inventor Xuefeng Liu

Xuefeng 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: 11401785
    Abstract: The present invention relates to the field of natural gas production, and discloses a well structure for natural gas hydrate production, which comprises: a natural gas production well (12); an injection well (4) capable of extending into a geothermal reservoir and injecting a heat-carrying fluid; a curved connecting well (7), the inlet end of the curved connecting well (7) is connected to the outlet end of the injection well (4); a hydrate production horizontal well (10), which may be arranged in a shallow hydrate reservoir (9), the curved connecting well (7) and the hydrate production horizontal well (10) are connected by an ascending well section (8). With the above technical scheme, the high curvature connected well connecting the horizontal well and the vertical well can be located in the bottom layer below the hydrate reservoir, enhancing the stability and production efficiency of the gas hydrate production well.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: August 2, 2022
    Assignees: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), SELSKAPET GUDME STAD AS, CIMC OFFSHORE ENGINEERING RESEARCH INSTITUTE CO. LTD.
    Inventors: Baojiang Sun, Ove Tobias Gudmestad, Xuefeng Li, Dahui Liu, Litao Chen
  • Patent number: 11398195
    Abstract: An image processing method, a backlight brightness adjustment method, an image processing system, and a computer readable storage medium are provided. The image processing method includes: acquiring a display image; dividing the display image to obtain one or more initial local regions; calculating an average brightness value of each of the one or more initial local regions respectively; acquiring an output image according to the average brightness value of each of the one or more initial local regions and the display image.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: July 26, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuefeng Wang, Yukun Sun, Jinghua Miao, Lili Chen, Hao Zhang, Bin Zhao, Lixin Wang, Xi Li, Jianwen Suo, Wenyu Li, Jinbao Peng, Qingwen Fan, Yuanjie Lu, Yali Liu, Chenru Wang, Jiankang Sun
  • Publication number: 20220228890
    Abstract: A heterodyne two-dimensional grating measuring device and measuring method thereof includes a light source, a reading head, a photoelectric receiving module, and a signal processing system. The light source is configured to generate two beams of linearly polarized lights having characteristics of overlapping, polarization orthogonal, and fixed frequency difference. The reading head is configured to receive the two beams of the linearly polarized lights, the two beams of the linearly polarized lights are respectively incident on a surface of a moving two-dimensional measuring grating to generate ±1-order diffracted lights of two dimensions, and the ±1-order diffracted lights are respectively incident to the photoelectric receiving module through the reading head.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 21, 2022
    Inventors: WENHAO LI, Zhaowu Liu, Hongzhu Yu, Wei Wang, Rigalantu Ji, Xuefeng Yao
  • Patent number: 11392197
    Abstract: An image rendering method, device, and system, a storage medium, and an image display method are provided. The image rendering method includes: acquiring an image to be displayed; according to a gaze point of human eyes on a display screen, obtaining a gaze point position on the image to be displayed; determining, according to the gaze point position, a first sampling area and a second sampling area of the image to be displayed; performing first resolution sampling on the first sampling area to obtain a first display area; performing second resolution sampling on the image to be displayed to obtain a second display area corresponding to the second sampling area, a resolution of the second sampling area being greater than that of the second display area; and splicing the first display area and the second display area to obtain an output image to be transmitted to the virtual reality device.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: July 19, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuefeng Wang, Yukun Sun, Jinghua Miao, Lili Chen, Hao Zhang, Bin Zhao, Lixin Wang, Xi Li, Jianwen Suo, Wenyu Li, Jinbao Peng, Qingwen Fan, Yuanjie Lu, Chenru Wang, Yali Liu, Jiankang Sun
  • Publication number: 20220221372
    Abstract: A heterodyne one-dimensional grating measuring device and measuring method thereof, including a light source, a reading head, a photoelectric receiving module, and a signal processing system. The light source is configured to generate two linearly polarized lights having characteristics of overlapping, polarization orthogonal, and fixed frequency difference. The reading head is configured to receive two beams of polarized lights and be respectively incident on a surface of a moving measuring grating to generate a +1-order diffracted light and a ?1-order diffracted light. The photoelectric receiving module is configured to receive the +1-order diffracted light and the ?1-order diffracted light to form two paths of beat frequency signals. The signal processing system is configured to perform differential calculation on the two paths of the beat frequency signals to realize a displacement measurement of single diffraction of the measuring grating for four-fold optical subdivision.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Inventors: WENHAO LI, ZHAOWU LIU, WEI WANG, HONGZHU YU, RIGALANTU JI, XUEFENG YAO
  • Publication number: 20220213893
    Abstract: Scroll compressor, a vehicle air conditioner and a vehicle are disclosed. The scroll compressor includes a first end cover, a casing and a crankshaft. The casing is provided with a supporting portion having a first bearing mounting portion; the first end cover is provided with a second bearing mounting portion; a first end of the crankshaft is arranged in the first bearing mounting portion through a first bearing; a second end of the crankshaft is arranged in the second bearing mounting portion through a second bearing; and the first bearing mounting portion and the second bearing mounting portion cooperate with each other to form an axial limitation on the crankshaft.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 7, 2022
    Inventors: Yusheng HU, Huijun WEI, Yun LIU, Xiaoli KANG, Caixia SHAN, Shuanglai LIU, Xiaoshan CHEN, Xuefeng LI
  • Publication number: 20220213705
    Abstract: This invention relates to a method for entire removal of a space truss, and an assistive support mechanism therefor. The assistive support mechanism is arranged on a vertical support rod of a truss structure, the assistive support mechanism comprises an assistive support assembly, a lattice support member, and a conversion platform. The lifting assembly is arranged at a top of the conversion platform and comprises a stranded wire, a lifting member, and a control member. The method for entire removal of a space truss comprises mounting the assistive support mechanism, and performing initial removal of the truss structure; lowering the truss structure; and then performing secondary removal of the entire space truss. The major removal work is done on the ground, thereby reducing the requirement for removal-assisting measures and the operational risks, and improving the working efficiency.
    Type: Application
    Filed: August 28, 2020
    Publication date: July 7, 2022
    Inventors: ZHENMING CHEN, SUMEI ZHANG, XUEFENG LIU, ZHAN WANG, YONGQING ZHAO, SHITAO HUANG
  • Patent number: 11374033
    Abstract: A thin film transistor, method of manufacturing the thin film transistor, an array substrate comprising the thin film transistor, and a display device comprising the array substrate. The thin film transistor comprises a substrate; a first electrode on the substrate; an active layer on a side of the first electrode away from the substrate; and a second electrode on a side of the active layer away from the first electrode. The first electrode and the second electrode are connected to the active layer, respectively. are also disclosed.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: June 28, 2022
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuefeng Sun, Guoliang Liu
  • Patent number: 11373337
    Abstract: The present disclosure is related to an image processing method of virtual reality. The image processing method may include obtaining position information of a gaze point; performing a compression process on an original image to obtain a compressed image based on the position information of the gaze point; performing a compression process on a distorted image of the original image in an lens to obtain a compressed distorted image based on the position information of the gaze point; and performing an anti-distortion process on the compressed image to obtain an anti-distortion image based on a relationship between the compressed image and the compressed distorted image. The position information of the gaze point may be position information of a gaze point of a user's eye on an original image.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: June 28, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jinghua Miao, Hao Zhang, Lili Chen, Yukun Sun, Yali Liu, Xi Li, Bin Zhao, Xuefeng Wang, Lixin Wang, Jianwen Suo, Wenyu Li, Ziqiang Guo, Ruifeng Qin, Guixin Yan, Feng Pan
  • Patent number: 11243175
    Abstract: A system may include illumination optics to direct an illumination beam to a sample at an off-axis angle, collection optics to collect scattered light from the sample, and a phase mask located at a first pupil plane to provide different phase shifts for light in two or more pupil regions of a collection area to reshape a point spread function of light scattered from one or more particles on a surface of the sample. The system may further include a polarization rotator located at a second pupil plane, where the polarization rotator provides a spatially-varying polarization rotation angle selected to rotate light scattered from the surface of the sample to a selected polarization angle, a polarizer to reject light polarized along the selected polarization angle, and a detector to generate a dark-field image of the sample based on light passed by the polarizer.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: February 8, 2022
    Assignee: KLA Corporation
    Inventors: Xuefeng Liu, Jenn-Kuen Leong, Daniel Kavaldjiev, John Fielden
  • Patent number: 11231362
    Abstract: A system includes a light source, a Fourier transform infrared reflectometer (FTIR) spectrometer, and broadband reflectometer optics. The system is configured to measure polarized light and unpolarized reflectivities in a wavelength range from 2 ?m to 20 ?m. The light source can be a laser-driven light source. The spectroscopic reflectometer can include a single channel or two channels.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 25, 2022
    Assignee: KLA Corporation
    Inventors: Guorong V. Zhuang, Shankar Krishnan, David Y. Wang, Xuefeng Liu, Mengmeng Ye, Dawei Hu
  • Patent number: 11205808
    Abstract: A method for detecting a lithium separation phenomenon of a battery of a terminal device is provided. The method includes detecting a working state of the battery, and collecting a first voltage of the battery when the working state of the battery is the resting state. The method further include collecting a second voltage of the battery when the battery is left to stand for a preset period of time, and determining whether the lithium separation phenomenon has occurred according to the first voltage and the second voltage. The implementation of the application can detect whether the lithium separation phenomenon has occurred in the battery and trigger a protection circuit of the battery in time when the lithium separation phenomenon has occurred in the battery.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: December 21, 2021
    Assignee: DONGGUAN AMPEREX TECHNOLOGY LIMITED
    Inventors: Chao Yang, XueFeng Liu, Jianchang Luo, JinHui Chen, Ying Wang, Guanghui Chen, ChunHua Bian
  • Publication number: 20210376631
    Abstract: A battery detection system includes a battery assembly and an electronic device. The battery assembly includes a first connector and a detection module connected to the first connector. The electronic device includes a second connector and a control module connected to the second connector. When the first connector is connected to the second connector, the detection module is configured to output first identification information to the electronic device through the first connector. When the second connector receives the first identification information, the control module confirms that the battery assembly is in a connected state. After the first connector is disconnected from the second connector, the detection module generates and outputs second identification information. When information received by the second connector changes from the first identification information to the second identification information, the control module confirms that the battery assembly is disconnected.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 2, 2021
    Inventors: Hong XIE, Guanghui Chen, Xuefeng Liu
  • Publication number: 20210224912
    Abstract: Techniques to use deep learning to forecast future orders for a financial service provider to execute by a future date. These techniques leverage a variety of features to predict an appropriate number of orders to execute, for example, on a next trading day. Some features correspond to market indices including their reconstitution schedule while others may correspond to historical orders by the financial service provider. By segregating the features and filtering individual features, these techniques are able to eliminate some noise and focus on a particular feature for insight into the future orders. Other embodiments are described and claimed.
    Type: Application
    Filed: March 15, 2019
    Publication date: July 22, 2021
    Inventors: Dajun Wang, Xuefeng Liu, Ji Zhou, Tianshi Wang
  • Patent number: 11067389
    Abstract: A system for measuring an overlay error of a sample is disclosed. The system may include a broadband illumination source configured to emit broadband illumination. The system may also include one or more optical elements configured to direct the broadband illumination to a target disposed on the sample, wherein the one or more optical elements are configured to collect illumination from the target and direct it to a spectrometer, wherein the spectrometer is configured to disperse multiple wavelengths of the illumination collected from the sample to multiple elements of a sensor to generate a plurality of signals. The system may also include a controller configured to calculate an overlay error between a first structure and a second structure of the target by comparing the plurality of signals with a plurality of calculated signals.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: July 20, 2021
    Assignee: KLA Corporation
    Inventors: Yung-Ho Alex Chuang, Yinying Xiao-Li, John Fielden, Xuefeng Liu, Peilin Jiang
  • Publication number: 20210164918
    Abstract: A system may include illumination optics to direct an illumination beam to a sample at an off-axis angle, collection optics to collect scattered light from the sample, and a phase mask located at a first pupil plane to provide different phase shifts for light in two or more pupil regions of a collection area to reshape a point spread function of light scattered from one or more particles on a surface of the sample. The system may further include a polarization rotator located at a second pupil plane, where the polarization rotator provides a spatially-varying polarization rotation angle selected to rotate light scattered from the surface of the sample to a selected polarization angle, a polarizer to reject light polarized along the selected polarization angle, and a detector to generate a dark-field image of the sample based on light passed by the polarizer.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 3, 2021
    Applicant: KLA Corporation
    Inventors: Xuefeng Liu, Jenn-Kuen Leong, Daniel Kavaldjiev, John Fielden
  • Patent number: 11011513
    Abstract: Embodiments of the invention include first and second devices formed on a substrate. The first device includes a bottom source or drain (S/D) region, a plurality of fins formed on portions of the bottom S/D region, a bottom spacer formed on the bottom S/D region, a dielectric layer, a gate, a top S/D region formed on each fin of a plurality of fins, and one or more contacts. The dielectric layer is disposed between the gate and the fin of the plurality of fins. The second device includes a bottom doped region, a channel formed the bottom doped region, a sidewall doped region of the channel, a gate coupled to the sidewall doped region, a top doped region, and one or more contacts. A junction is formed between the channel and the sidewall doped region. The cap layer is formed on the gate and the top doped region.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: May 18, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Brent A. Anderson, Huiming Bu, Terence B. Hook, Xuefeng Liu, Junli Wang
  • Patent number: 11001808
    Abstract: The present invention is directed towards methods of culturing non-keratinocyte epithelial cells, with the methods comprising culturing non-keratinocyte epithelial cells in the presence of feeder cells and a calcium-containing medium while inhibiting the activity of Rho kinase (ROCK) in the feeder cell, the non-keratinocyte epithelial cells or both during culturing.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: May 11, 2021
    Assignee: Georgetown University
    Inventors: Richard Schlegel, Xuefeng Liu
  • Patent number: 10964812
    Abstract: A method for fabricating a semiconductor device includes forming a vertical field-effect transistor (FET) device including a plurality of first fin structures in a vertical FET device area of a substrate, and forming an input/output (IO) FET device including at least two second fin structures in an IO FET device area of the substrate. The at least two fin structures are connected by a channel having a length determined based on at least one voltage for implementing the IO FET device. Forming the vertical FET and IO FET devices includes selectively exposing a portion of the IO FET device area by selectively removing a portion of a first spacer formed on the substrate in the IO FET device area.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: March 30, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xuefeng Liu, Junli Wang, Brent A. Anderson, Terence B. Hook, Gauri Karve
  • Patent number: 10948423
    Abstract: A dark-field inspection system may include an illumination source to generate an illumination beam, illumination optics configured to direct the illumination beam to a sample at an off-axis angle along an illumination direction, collection optics to collect scattered light from the sample in response to the illumination beam in a dark-field mode, a polarization rotator located at a pupil plane of the one or more collection optics, where the polarization rotator provides a spatially-varying polarization rotation angle selected to rotate light scattered from a surface of the sample to a selected polarization angle, a polarizer aligned to reject light polarized along the selected polarization angle to reject the light scattered from a surface of the sample, and a detector to generate a dark-field image of the sample based on scattered light from the sample passed by the polarizer.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: March 16, 2021
    Assignee: KLA Corporation
    Inventors: Xuefeng Liu, Jenn-Kuen Leong, Daniel Kavaldjiev, John Fielden