Patents by Inventor Ziwei Wang
Ziwei 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).
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Patent number: 11936861Abstract: Embodiments of this application relate to the video coding and compression field, and disclose an encoding method and apparatus, and a decoding method and apparatus, to resolve a problem that an existing split mode cannot satisfy a relatively complex texture requirement. The decoding method specifically includes: parsing a bitstream to determine a basic split mode for a current to-be-decoded picture block and a target derivation mode for a subpicture block of the current to-be-decoded picture block; splitting the current to-be-decoded picture block into N subpicture blocks in the basic split mode, where N is an integer greater than or equal to 2; deriving one derived picture block from at least two adjacent subpicture blocks in the N subpicture blocks in the target derivation mode; and decoding the derived picture block.Type: GrantFiled: November 16, 2020Date of Patent: March 19, 2024Assignees: Huawei Technologies Co., Ltd., Tsinghua UniversityInventors: Quanhe Yu, Jicheng An, Jianhua Zheng, Yongbing Lin, Liqiang Wang, Benben Niu, Ziwei Wei, Yun He
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Publication number: 20240077549Abstract: The present disclosure discloses an optical measurement device and method for a plasma magnetic field with adjustable sensitivity. The method comprises the following steps: constructing an optical rotation measurement system based on a pulsed laser beam for measuring an optical rotation image and a shadow image; processing the optical rotation image and the shadow image, and obtaining a distribution of proportional coefficients based on alight intensity distribution; obtaining a distribution of rotation angles based on a mapping relationship between the proportional coefficients and the rotation angles; constructing an interference measurement system based on the pulsed laser beam, and measuring a phase shift of an interference image; calculating a distribution of electron areal densities based on the phase shift in the interference image; obtaining a two-dimensional distribution of an average magnetic field based on the rotation angles and the electron areal densities.Type: ApplicationFiled: November 9, 2023Publication date: March 7, 2024Inventors: Jian WU, Zhiyuan JIANG, Ziwei CHEN, Zhenyu WANG, Wei WANG, Xinmiao ZHOU, Huantong SHI, Xingwen LI
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Publication number: 20230384085Abstract: The present disclosure provides a phase unwrapping method based on multi-view constraints of a light field and related components. The method includes: sampling main view phases at different depths in a measurement scene; performing polynomial calibration on a mapping relation from the main view phase to the pixel coordinates of the corresponding points in auxiliary view images; calculating a candidate absolute phase set of each pixel in a main view image; traversing the candidate absolute phase set, calculating an error value between the candidate absolute phase set and wrapped phases of the pixel coordinates of the corresponding points in all the auxiliary view images by utilizing a calibrated mapping relation, and taking a candidate phase corresponding to the minimum error value as an absolute phase of each pixel in the main view image. The present disclosure can stably realize accurate phase unwrapping of the structured light field.Type: ApplicationFiled: May 18, 2023Publication date: November 30, 2023Inventors: Xiaoli Liu, Quanyao Hou, Yang Yang, Ziwei Wang, Qijian Tang, Xiang Peng
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Patent number: 11492319Abstract: A biomass-based long-chain alcohol ether oxygenated additive and a preparation method and application thereof are disclosed. The additive used agricultural and forestry wastes as raw materials, and has a general chemical formula of R—(O—C1-3)n—R—OH. The preparation method includes the following steps: step 1, performing drying pretreatment on biomass raw materials, performing rapid pyrolysis under an inert atmosphere to obtain a pyrolysis product containing water, gases, water-phase bio-oil and oil-phase bio-oil, separating out the water-phase bio-oil and performing catalytic hydrogenation on the water-phase bio-oil to obtain polyols; step 2, performing catalytic dehydration on the polyols obtained in step 1 under a basic catalyst system to obtain epoxyalkane; and step 3, making the epoxyalkane obtained in step 2 and methanol undergo a reaction under a molecular sieve catalyst and removing the solid catalyst by separation to obtain the long-chain alcohol ether oxygenated additive.Type: GrantFiled: September 29, 2020Date of Patent: November 8, 2022Assignee: SOUTHEAST UNIVERSITYInventors: Shiliang Wu, Rui Xiao, Yuan Liu, Ziwei Wang
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Patent number: 11465124Abstract: A preparation method for covalent organic framework 5 (COF-5) includes: adding 2,3,6,7,10,11-hexahydroxytriphenylene and 1,4-phenylenebisboronic acid to a mixed solution of 1,3,5-trimethylbenzene and 1,4-dioxane to form a mixture in the anhydrous and oxygen-free environment; and the addition ratio of 2,3,6,7,10,11-hexahydroxytriphenylene:1,4-phenylenebisboronic acid:1,3,5-trimethylbenzene:1,4-dioxane is 0.02-0.8 mmol:0.08-1.4 mmol:10-15 mL:10-15 mL; sealing the mixture in an airtight container; and obtaining a uniform dispersion solution after shaking the container for wholly mixing the components; heating the dispersion solution to a temperature ranging from 80-100° C.; reacting for a period of time ranging from 72-120 h; and obtaining a precipitate after the reaction; and washing the precipitate, drying the precipitate in vacuum, and heating the precipitate at a temperature ranging from 200-300° C. for a period of time ranging from 1-3 h with a protective atmosphere to obtain COF-5 crystal.Type: GrantFiled: December 14, 2020Date of Patent: October 11, 2022Assignee: WUHAN UNIVERSITY OF TECHNOLOGYInventors: Yueli Liu, Wen Chen, Zifan Yang, Ziwei Wang
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Publication number: 20220106244Abstract: A biomass-based long-chain alcohol ether oxygenated additive and a preparation method and application thereof are disclosed. The additive used agricultural and forestry wastes as raw materials, and has a general chemical formula of R—(O—C1-3)n—R—OH. The preparation method includes the following steps: step 1, performing drying pretreatment on biomass raw materials, performing rapid pyrolysis under an inert atmosphere to obtain a pyrolysis product containing water, gases, water-phase bio-oil and oil-phase bio-oil, separating out the water-phase bio-oil and performing catalytic hydrogenation on the water-phase bio-oil to obtain polyols; step 2, performing catalytic dehydration on the polyols obtained in step 1 under a basic catalyst system to obtain epoxyalkane; and step 3, making the epoxyalkane obtained in step 2 and methanol undergo a reaction under a molecular sieve catalyst and removing the solid catalyst by separation to obtain the long-chain alcohol ether oxygenated additive.Type: ApplicationFiled: September 29, 2020Publication date: April 7, 2022Applicant: SOUTHEAST UNIVERSITYInventors: Shiliang WU, Rui XIAO, Yuan LIU, Ziwei WANG
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Patent number: 11203742Abstract: The disclosure relates to a sucrose phosphorylase mutant with improved enzyme activity, and construction method thereof and use thereof, and belongs to the technical field of genetic engineering. The amino acid sequence of the mutant of the disclosure is as shown in SEQ ID NO: 1. The mutant of the disclosure is based on sucrose phosphorylase derived from Leuconostoc mesenteroides, and subjected to site-directed mutagenesis to improve the enzyme activity of sucrose phosphorylase. The mutant is expressed in Corynebacterium glutamicum and used as a whole cell catalyst to produce 2-O-?-D-glycerol glucoside. At a 5 L fermentation tank level, a large quantity of 2-O-?-D-glycerol glucoside can be produced efficiently in a short time, which is conducive to expanding the prospect of industrial application of sucrose phosphorylase for the production of 2-O-?-D-glycerol glucoside and realizing its large-scale industrial application.Type: GrantFiled: June 8, 2020Date of Patent: December 21, 2021Assignee: Jiangnan UniversityInventors: Zhiming Rao, Peifeng Duan, Jianing Zhang, Xian Zhang, Taowei Yang, Meijuan Xu, Minglong Shao, Yu Liu, Ziwei Wang, Yan Chen, Qi Chen
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Patent number: 11191789Abstract: Cells derived from postpartum tissue and methods for their isolation and induction to differentiate to cells of a chondrogenic or osteogenic phenotype are provided by the invention. The invention further provides cultures and compositions of the postpartum-derived cells and products related thereto. The postpartum-derived cells of the invention and products related thereto have a plethora of uses, including but not limited to research, diagnostic, and therapeutic applications, for example, in the treatment of bone and cartilage conditions.Type: GrantFiled: June 25, 2004Date of Patent: December 7, 2021Assignee: Depuy Synthes Products, Inc.Inventors: Anthony J. Kihm, Agnieszka Seyda, Sridevi Dhanaraj, Ziwei Wang, Alexander M. Harmon, Ian Ross Harris, Darin J. Messina, Sanjay Mistry, Anna Gosiewska, Chin-Feng Yi
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Publication number: 20210178363Abstract: A preparation method for covalent organic framework 5 (COF-5) includes: adding 2,3,6,7,10,11-hexahydroxytriphenylene and 1,4-phenylenebisboronic acid to a mixed solution of 1,3,5-trimethylbenzene and 1,4-dioxane to form a mixture in the anhydrous and oxygen-free environment; and the addition ratio of 2,3,6,7,10,11-hexahydroxytriphenylene: 1,4-phenylenebisboronic acid: 1,3,5-trimethylbenzene: 1,4-dioxane is 0.02-0.8 mmol: 0.08-1.4 mmol: 10-15 mL: 10-15 mL; sealing the mixture in an airtight container; and obtaining a uniform dispersion solution after shaking the container for wholly mixing the components; heating the dispersion solution to a temperature ranging from 80-100° C.; reacting for a period of time ranging from 72-120 h; and obtaining a precipitate after the reaction; and washing the precipitate, drying the precipitate in vacuum, and heating the precipitate at a temperature ranging from 200-300° C. for a period of time ranging from 1-3 h with a protective atmosphere to obtain COF-5 crystal.Type: ApplicationFiled: December 14, 2020Publication date: June 17, 2021Inventors: Yueli LIU, Wen CHEN, Zifan YANG, Ziwei WANG
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Publication number: 20210130797Abstract: The disclosure relates to a sucrose phosphorylase mutant with improved enzyme activity, and construction method thereof and use thereof, and belongs to the technical field of genetic engineering. The amino acid sequence of the mutant of the disclosure is as shown in SEQ ID NO: 1. The mutant of the disclosure is based on sucrose phosphorylase derived from Leuconostoc mesenteroides, and subjected to site-directed mutagenesis to improve the enzyme activity of sucrose phosphorylase. The mutant is expressed in Corynebacterium glutamicum and used as a whole cell catalyst to produce 2-O-?-D-glycerol glucoside. At a 5L fermentation tank level, a large quantity of 2-O-?-D-glycerol glucoside can be produced efficiently in a short time, which is conducive to expanding the prospect of industrial application of sucrose phosphorylase for the production of 2-O-?-D-glycerol glucoside and realizing its large-scale industrial application.Type: ApplicationFiled: June 8, 2020Publication date: May 6, 2021Inventors: Zhiming Rao, Peifeng Duan, Jianing Zhang, Xian Zhang, Taowei Yang, Meijuan Xu, Minglong Shao, Yu Liu, Ziwei Wang, Yan Chen, Qi Chen
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Publication number: 20210042664Abstract: A model training method and apparatus, a service recommendation method and apparatus, and an electronic device. In an example of the model training method, the method includes: obtaining a sample data set, the sample data set including first-type sample data and second-type sample data; obtaining a first weight corresponding to the first-type sample data and a second weight corresponding to the second-type sample data; performing a weighting operation according to the first weight, the second weight, a loss function corresponding to the first-type sample data, and a loss function corresponding to the second-type sample data, to obtain an overall loss function; and training a machine learning model by using the sample data set based on the overall loss function.Type: ApplicationFiled: October 22, 2020Publication date: February 11, 2021Inventor: Ziwei WANG
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Publication number: 20200356875Abstract: Provided in various embodiments are a model training method and apparatus, an electronic device and a computer readable storage medium, belonging to the technical field of computers. In those embodiments, at least one sample subset can be obtained according to a sample set configured to train models. For each of the sample subsets, a plurality of machine learning models can be trained corresponding to the sample subset according to the sample subset, and predicted values of the plurality of machine learning models can be obtained for the sample subset. A fusion sample set can then be determined according to the predicted values of the machine learning models for each of the sample subsets, and a target machine learning model can be trained according to the fusion sample set.Type: ApplicationFiled: October 18, 2018Publication date: November 12, 2020Inventor: Ziwei WANG
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Patent number: 10784289Abstract: The present application provides an array substrate. The array substrate in each of a plurality of subpixel areas includes a first thin film transistor having a first gate electrode connected to one of a plurality of gate lines, a first source electrode connected to one of a plurality of data lines, and a first drain electrode connected to a pixel electrode; a second thin film transistor having a second gate electrode, a second source electrode connected to the one of the plurality of data lines, and a second drain electrode connected to the pixel electrode; and a third thin film transistor having a third gate electrode connected to the one of the plurality of data lines, a third source electrode connected to the one of the plurality of gate lines, and a third drain electrode connected to the second gate electrode and one of a plurality of auxiliary signal lines.Type: GrantFiled: May 22, 2018Date of Patent: September 22, 2020Assignees: Chongqing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yulong Chen, Niannian Wang, Yong Xiong, Zhichang Liu, Xiaorui Tian, Linglong Lu, Ziwei Wang, Meng Wei, Xiang Zhang
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Publication number: 20200285937Abstract: Embodiments of the present disclosure provide a consumption capacity prediction method and apparatus, an electronic device and a readable storage medium, and relates to the technical field of computers. According to one example of the method, by obtaining one or more statistical characteristic data and one or more temporal sequence characteristic data with respect to a target object from historical data of a target user, a consumption capacity of the target user with respect to the target object can be determined by utilizing a preset hybrid neural network prediction model on the basis of the one or more statistical characteristic data and the one or more temporal sequence characteristic data.Type: ApplicationFiled: September 28, 2018Publication date: September 10, 2020Inventors: Jun XU, Shangqiang LI, Yitao ZHAI, Ziwei WANG
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Publication number: 20190363104Abstract: The present application provides an array substrate. The array substrate in each of a plurality of subpixel areas includes a first thin film transistor having a first gate electrode connected to one of a plurality of gate lines, a first source electrode connected to one of a plurality of data lines, and a first drain electrode connected to a pixel electrode; a second thin film transistor having a second gate electrode, a second source electrode connected to the one of the plurality of data lines, and a second drain electrode connected to the pixel electrode; and a third thin film transistor having a third gate electrode connected to the one of the plurality of data lines, a third source electrode connected to the one of the plurality of gate lines, and a third drain electrode connected to the second gate electrode and one of a plurality of auxiliary signal lines.Type: ApplicationFiled: May 22, 2018Publication date: November 28, 2019Applicants: Chongqing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yulong Chen, Niannian Wang, Yong Xiong, Zhichang Liu, Xiaorui Tian, Linglong Lu, Ziwei Wang, Meng Wei, Xiang Zhang
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Publication number: 20190320931Abstract: The present disclosure relates to a signal acquisition device, a signal acquisition method and a wearable apparatus. A preamplifier circuit in the signal acquisition device amplifies an obtained sEMG signal to produce an amplified sEMG signal. A baseline drift suppression circuit in the signal acquisition device extracts a first low-frequency component from the amplified sEMG signal and performs subtraction processing between the amplified sEMG signal and the first low-frequency component to obtain a difference signal. A filter circuit in the signal acquisition device filters the difference signal to obtain a target acquisition signal. With introduction of baseline drift suppression in the signal acquisition circuit, the baseline drift caused by a low-frequency component in a sEMG signal is eliminated, and the stability of a target acquisition signal is enhanced.Type: ApplicationFiled: January 7, 2019Publication date: October 24, 2019Inventors: Ziwei WANG, Linglong LU, Yulong CHEN, Xiang ZHANG, Niannian WANG, Yong XIONG
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Patent number: 8936651Abstract: Methods for defatting omentum and processes for preparing an acellular omentum, i.e., devitalized or decellularized omentum, comprising extracellular matrix for implantation into a mammalian system. Constructs for medical applications comprising decellularized omentum are also described. More specifically, mesh reinforced omentum biomatrix for soft tissue repair is described.Type: GrantFiled: March 14, 2013Date of Patent: January 20, 2015Assignee: Ethicon, Inc.Inventors: Chunlin Yang, Qiang Zhang, Ilya Koyfman, Ziwei Wang, Daphne Ann Salick Ryan, Robert B. Vetrecin, Philip M. Steele
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Publication number: 20140271784Abstract: Methods for defatting omentum and processes for preparing an acellular omentum, i.e., devitalized or decellularized omentum, comprising extracellular matrix for implantation into a mammalian system. Constructs for medical applications comprising decellularized omentum are also described. More specifically, mesh reinforced omentum biomatrix for soft tissue repair is described.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: Ehitcon, Inc.Inventors: Chunlin Yang, Qiang Zhang, Ilya Koyfman, Ziwei Wang, Daphne Anne Salick Ryan, Robert B. Vetrecin, Philip M. Steele
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Publication number: 20130006349Abstract: Compositions and methods of using tissue engineered blood vessels to repair and regenerate blood vessels of patients with vascular disease are disclosed.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Inventors: Iksoo Chun, Ziwei Wang, Kevin Cooper, Dennis Jamiolkowski, Modesto Erneta, Sasa Andjelic, Jianguo Jack Zhou
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Patent number: D972154Type: GrantFiled: April 1, 2022Date of Patent: December 6, 2022Inventors: Yao Wu, Ziwei Wang