Patents by Inventor Xiaolei Liu

Xiaolei 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: 11334981
    Abstract: A method for detecting a screen is provided, which may improve detection accuracy of defective sub-pixels in the display screen. The method includes: obtaining an image of a screen to be detected; performing Gabor filtering on the image of the screen to be detected to obtain a plurality of Gabor filtered images; performing image fusion on the plurality of Gabor filtered images to obtain a fused image; segmenting the fused image by using different gray thresholds to obtain segmented images; and performing defect detection according to the segmented images to determine whether there is a defective sub-pixel in the screen to be detected. A value range of different gray thresholds is within a gray value range of the fused image.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: May 17, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolei Liu, Minglei Chu, Lili Chen, Hao Zhang
  • Patent number: 11327276
    Abstract: A multi-axis MEMS assembly includes a micro-electrical-mechanical system (MEMS) actuator configured to provide linear three-axis movement. The micro-electrical-mechanical system (MEMS) actuator includes: an in-plane MEMS actuator, and an out-of-plane MEMS actuator. An optoelectronic device is coupled to the micro-electrical-mechanical system (MEMS) actuator. The out-of-plane MEMS actuator includes a multi-morph piezoelectric actuator.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: May 10, 2022
    Assignee: MEMS DRIVE (NANJING) CO., LTD.
    Inventors: Guiqin Wang, Xiaolei Liu, Matthew Ng
  • Publication number: 20220129660
    Abstract: A system and a method of calculating coordinates of a pupil center point are provided. The system for acquiring the coordinates of the pupil center point includes a first camera, a second camera, a storage and a processor. The first camera is configured to capture a first image including a face and output the first image to the processor, the second camera is configured to capture a second image including a pupil and output the second image to the processor, a resolution of the first camera is smaller than a resolution of the second camera, and the storage is configured to store processing data, and the processor is configured to: acquire the first image and the second image; extract a first eye region corresponding to an eye from the first image; convert the first eye region into the second image, to acquire a second eye region corresponding to the eye in the second image; and detect a pupil in the second eye region and acquire the coordinates of the pupil center point.
    Type: Application
    Filed: May 13, 2021
    Publication date: April 28, 2022
    Applicants: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yachong XUE, Hao ZHANG, Lili CHEN, Jiankang SUN, Xinkai LI, Guixin YAN, Xiaolei LIU, Yaoyu LV, Menglei ZHANG
  • Patent number: 11279612
    Abstract: A micro-electrical-mechanical system (MEMS) actuator includes: a MEMS actuation core, and a multi-piece MEMS electrical connector assembly electrically coupled to the MEMS actuation core and configured to be electrically coupled to a printed circuit board, wherein the multi-piece MEMS electrical connector includes: a plurality of subcomponents, and a plurality of coupling assemblies configured to couple the plurality of subcomponents together.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 22, 2022
    Assignee: MEMS DRIVE (NANJING) CO., LTD.
    Inventors: Xiaolei Liu, Matthew Ng, Guiqin Wang
  • Patent number: 11274033
    Abstract: A micro-electrical-mechanical system (MEMS) actuator includes a first set of actuation fingers, a second set of actuation fingers, and a first spanning structure configured to couple at least two fingers of the first set of actuation fingers while spanning at least one finger of the second set of actuation fingers.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 15, 2022
    Assignee: MEMS DRIVE (NANJING) CO., LTD.
    Inventors: Xiaolei Liu, Matthew Ng, Guiqin Wang
  • Publication number: 20220076781
    Abstract: The disclosure provides a fast and stable genomic breeding value evaluating method for animal individuals, and relates to the technical field of animal breeding. In the method, HIBLUP is adopted to perform genomic breeding value prediction using phenotype, genotype and pedigree information, and the final output includes estimated genetic value of individuals, additive effect and dominant effect values of each individual, and back solution values of each genetic marker effect used on genotyping chips. The pedigree, phenotypic and genotypic information can be fully used to predict genetic (additive and dominant) values for each individual animal and as well as effect values for each SNP marker, and the most advanced genomic breeding value prediction and variance component estimation algorithm are realized to realize genomic selection.
    Type: Application
    Filed: January 14, 2019
    Publication date: March 10, 2022
    Inventors: Shuhong ZHAO, Xiaolei LIU, Xiang YANG, Xinyun LI, Mengjin ZHU, Tao XIANG, Yunlong MA, Mei YU, Zhiquan WANG, Lilin YIN
  • Patent number: 11261081
    Abstract: A micro-electrical-mechanical system (MEMS) assembly includes a stationary stage, a rigid stage, at least one flexure configured to slidably couple the stationary stage and the rigid stage, at least one flexible electrode coupled and essentially orthogonal to one of the stationary stage and the rigid stage, and at least one rigid electrode coupled and essentially orthogonal to the other of the stationary stage and the rigid stage.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 1, 2022
    Assignee: MEMS DRIVE (NANJING) CO., LTD.
    Inventors: Matthew Ng, Xiaolei Liu
  • Publication number: 20220019128
    Abstract: A method of producing a MEMS assembly includes: producing an OIS/IS subassembly, wherein the OIS/IS subassembly includes an optical image stabilizer and an image sensor; and coupling the OIS/IS subassembly to an AF subassembly to form an OIS/IS/AF assembly.
    Type: Application
    Filed: July 19, 2021
    Publication date: January 20, 2022
    Inventors: MATTHEW NG, Xiaolei Liu, Guiqin Wang
  • Patent number: 11156564
    Abstract: A method for detecting dirt on a screen, a device for the same, an electronic device and a computer-readable storage medium are provided. The method includes acquiring a first image of the screen when the screen is displaying a first picture, determining a dirt detection area in the first image with a mask image, and detecting a position of the dirt within the dirt detection area. With the method provided by the embodiments of the disclosure, the positon of dirt on the screen could be detected based on at most two images of the screen. The time for detecting dirt on the screen is greatly shortened, and the efficiency of detection is enhanced.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: October 26, 2021
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xiaolei Liu, Yunqi Wang, Minglei Chu, Lili Chen, Hao Zhang
  • Patent number: 11151712
    Abstract: A method for detecting image defects is described, which includes obtaining an image to be detected, down-sampling the image to be detected to obtain a down-sampled image, de-cluttering the down-sampled image to obtain a de-cluttered image, restoring the de-cluttered image into a restored image having the same resolution as the image to be detected so as to be used as a background image, and comparing the image to be detected with the background image to determine defects in the image to be detected. An apparatus for detecting image defects, a computing device and a storage medium are also described.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: October 19, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolei Liu, Lili Chen, Yunqi Wang, Minglei Chu
  • Publication number: 20210295103
    Abstract: A device may receive image data that includes an image of a document and lexicon data identifying a lexicon, and may perform an extraction technique on the image data to identify at least one field in the document. The device may utilize form segmentation to automatically generate label data identifying labels for the image data, and may process the image data, the label data, and data identifying the at least one field, with a first model, to identify visual features. The device may process the image data and the visual features, with a second model, to identify sequences of characters, and may process the image data and the sequences of characters, with a third model, to identify strings of characters. The device may compare the lexicon data and the strings of characters to generate verified strings of characters that may be utilized to generate a digitized document.
    Type: Application
    Filed: March 20, 2020
    Publication date: September 23, 2021
    Inventors: Rajendra Prasad TANNIRU, Aditi KULKARNI, Koushik M. VIJAYARAGHAVAN, Luke HIGGINS, Xiwen SUN, Riley GREEN, Man Lok CHING, Jiayi CHEN, Xiaolei LIU, Isabella Phoebe Groenewegen MOORE, Reuben LEMA
  • Patent number: 11124411
    Abstract: Shock-resistant MEMS structures are disclosed. In one implementation, a motion control flexure for a MEMS device includes: a rod including a first and second end, wherein the rod is tapered along its length such that it is widest at its center and thinnest at its ends; a first hinge directly coupled to the first end of the rod; and a second hinge directly coupled to the second of the rod. In another implementation, a conductive cantilever for a MEMS device includes: a curved center portion includes a first and second end, wherein the center portion has a point of inflection; a first root coupled to the first end of the center portion; and a second root coupled to the second end of the center portion. In yet another implementation, a shock stop for a MEMS device is described.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: September 21, 2021
    Assignee: MEMS Drive (Nanjing) Co., Ltd
    Inventors: Gerardo Morabito, Xiaolei Liu, Guiqin Wang, Roman Gutierrez, Matthew Ng
  • Patent number: 11110997
    Abstract: The present invention discloses a system for measuring the mechanical properties of sea floor sediments at full ocean depth.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: September 7, 2021
    Assignee: OCEAN UNIVERSITY OF CHINA
    Inventors: Yonggang Jia, Hong Zhang, Xiaolei Liu, Hongxian Shan
  • Patent number: 11113431
    Abstract: The present invention is related to computer-assisted process design, and an MBD-based three-dimensional process designing method and platform for a typical automobile machined part are disclosed. By taking three-dimensional CAD software as a carrier, an MBD design model, and a process MBD model as a data output, the design flow comprises steps such as establishment of MBD-related standards, creation of an MBD design model, feature classification and creation of a feature library, feature recognition and information extraction, generation of manufacturing elements, clustering of the manufacturing elements and generation of procedures, sequencing of the procedures, and creation of manufacturing features body and procedure models.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: September 7, 2021
    Inventors: Jinli Xu, Xiaolei Liu, Fengyun Huang, Chunxiao Chen, Qiangqiang Niu, Bing Jia, Qian Yu, Weiteng Liu, Mingya Du, Qinggu Pan, Shijun Luo, Delong Hu, Fancong Zeng, Wei Xu, Jiwei Zhu
  • Patent number: 11104570
    Abstract: Caging structures are disclosed for caging or otherwise reducing the mechanical shock pulse experienced by MEMS device beam structures during events that may cause mechanical shock to the MEMS device. The caging structures at least partially surround the beam such that they limit the motion of the beam in a direction perpendicular to the beam's longitudinal axis, thereby reducing stress on the beam during a mechanical shock event. The caging structures may be used in combination with mechanical shock-resistant beams.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: August 31, 2021
    Assignee: MEMS Drive (Nanjing) Co., Ltd.
    Inventors: Xiaolei Liu, Matthew Ng, Robert Calvet, Gerardo Morabito
  • Patent number: 11095820
    Abstract: A micro-electrical-mechanical system (MEMS) actuator configured to provide multi-axis movement, the micro-electrical-mechanical system (MEMS) actuator including: a first portion, a second portion, wherein the first portion and the second portion are displaceable with respect to each other, and a locking assembly configured to releasably couple the first portion and the second portion to attenuate displacement between the first portion and the second portion.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: August 17, 2021
    Assignee: MEMS Drive, Inc.
    Inventors: Xiaolei Liu, Matthew Ng, Guiqin Wang
  • Patent number: 11045888
    Abstract: A portable wire cutting device for sampling a steel ingot includes a wire rack device, a driving system, and a multi-axis moving device. The wire rack device includes a first corner wheel, a second corner wheel, a transition wheel, a steering wheel, a first wire rack, a second wire rack, and a wire winding drum. The driving system includes a wire drum motor and a molybdenum wire, wherein the wire drum motor provides power driving for the operation of a cutting line; and the molybdenum wire is a closed molybdenum wire coil connected in an end-to-end manner, the molybdenum wire is wrapped around the first corner wheel, the second corner wheel, the wire winding drum, and an inner side of the transition wheel in a looping manner, and during operation, the cutting line performs wire cutting on an object by the molybdenum wire.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: June 29, 2021
    Assignee: NANJING DEVELOP ADVANCED MANUFACTURING CO., LTD.
    Inventors: Lingjun He, Changhua Chen, Hong Zhang, Li Zhang, Leijun Song, Jiayin Xu, Chaogang Shi, Yangdao Gong, Yao Ha, Xiaolei Liu, Jiao Wang, Xinhua Chen
  • Publication number: 20210188958
    Abstract: The present disclosure relates to the field of immunology, in particular to a B-cell epitope of Trichinella spiralis cysteine protease inhibitor, a hybridoma cell line, a monoclonal antibody and uses thereof. The present disclosure provides a hybridoma cell line that can generate anti-WN10 antibody, and identifies the specific B-cell epitope of WN10 protein recognized by the monoclonal antibody. These are of great significance for the diagnosis of trichinellosis, for the establishment of competitive ELISA for detecting antibodies and sandwich ELSIA for detecting circulating antigens, for the detection of Trichinella spiralis in different hosts and for the development of subunit vaccines.
    Type: Application
    Filed: December 19, 2020
    Publication date: June 24, 2021
    Applicant: JILIN UNIVERSITY
    Inventors: Xiaolei LIU, Mingyuan LIU, Yong YANG, Yan LIU
  • Publication number: 20210174489
    Abstract: A method for detecting a screen is provided, which may improve detection accuracy of defective sub-pixels in the display screen. The method includes: obtaining an image of a screen to be detected; performing Gabor filtering on the image of the screen to be detected to obtain a plurality of Gabor filtered images; performing image fusion on the plurality of Gabor filtered images to obtain a fused image; segmenting the fused image by using different gray thresholds to obtain segmented images; and performing defect detection according to the segmented images to determine whether there is a defective sub-pixel in the screen to be detected. A value range of different gray thresholds is within a gray value range of the fused image.
    Type: Application
    Filed: April 16, 2020
    Publication date: June 10, 2021
    Inventors: Xiaolei LIU, Minglei CHU, Lili CHEN, Hao ZHANG
  • Publication number: 20210165920
    Abstract: The present invention is related to computer-assisted process design, and an MBD-based three-dimensional process designing method and platform for a typical automobile machined part are disclosed. By taking three-dimensional CAD software as a carrier, an MBD design model, and a process MBD model as a data output, the design flow comprises steps such as establishment of MBD-related standards, creation of an MBD design model, feature classification and creation of a feature library, feature recognition and information extraction, generation of manufacturing elements, clustering of the manufacturing elements and generation of procedures, sequencing of the procedures, and creation of manufacturing features body and procedure models.
    Type: Application
    Filed: March 14, 2019
    Publication date: June 3, 2021
    Applicant: WUHAN UNIVERSITY OF TECHNOLOGY
    Inventors: Jinli XU, Xiaolei LIU, Fengyun HUANG, Chunxiao CHEN, Qiangqiang NIU, Bing JIA, Qian YU, Weiteng LIU, Mingya DU, Qinggu PAN, Shijun LUO, Delong HU, Fancong ZENG, Wei XU, Jiwei ZHU