Patents by Inventor Tao Duan
Tao Duan 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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Publication number: 20240137484Abstract: Provided in the embodiments of the present disclosure are a display panel, a display apparatus and a driving method therefor, and an image rendering method.Type: ApplicationFiled: August 27, 2021Publication date: April 25, 2024Inventors: Tieshi WANG, Kuanjun PENG, Xue DONG, Chunmiao ZHOU, Tao HONG, Hui ZHANG, Xin DUAN, Minglei CHU, Xiaochuan CHEN, Guangcai YUAN, Jing YU
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Patent number: 11965420Abstract: Disclosed are a shield tunnel segment structure and a construction method thereof. The shield tunnel segment structure includes segment blocks sequentially spliced in a circumferential direction. Each segment block forms a closed annular segment structure, and outer diameters of adjacent annular segment structures gradually increase in an axial direction. At least two adjacent segment blocks of the same annular segment structure form an annular inner groove, and at least one segment block of the adjacent annular segment structures is provided with an inner bump which matches the annular inner groove. At least two adjacent segment blocks of the same annular segment structure form an annular outer groove, and at least one segment block of the adjacent annular segment structures is provided with an outer bump which matches the annular outer groove. The annular outer grooves and the annular inner grooves are staggered in the circumferential direction.Type: GrantFiled: July 5, 2023Date of Patent: April 23, 2024Assignees: Shandong University, Northeast Electric Power UniversityInventors: Ke Wu, Tao Yang, Yang Zheng, Guodong Li, Zhihao Xing, Hongna Yang, Jiaxiang Xu, Rong Chen, Dongxue Hao, Jizheng Sun, Jingchuan Duan, Hongwei Zhang
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Publication number: 20240129781Abstract: Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) identifies a set of positioning sources, each positioning source comprising a positioning reference signal (PRS) resource, a PRS resource set, a PRS frequency layer, and/or a transmission/reception point (TRP). From the set of positioning sources, the UE identifies a consistency group comprising a collection of positioning sources grouped based on expected values of at least one metric of a reference signal from each positioning source, measured values of the at least one metric for the reference signal from each positioning source, and an error threshold. The UE identifies one or more subsets of positioning sources within the consistency group, each subset having at least one metric error value. The UE reports, to a network entity, information about the consistency group and information about at least one of the subsets of positioning sources within the consistency group.Type: ApplicationFiled: December 7, 2023Publication date: April 18, 2024Inventors: Alexandros MANOLAKOS, Sony AKKARAKARAN, Jingchao BAO, Weimin DUAN, Tao LUO, Juan MONTOJO
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Publication number: 20240126936Abstract: A multi-scale aggregation pattern analysis method for a complex traffic network is provided, which belongs to the field of the highway traffic network. Firstly, an adjacency matrix, a position attribute matrix, a distance weight matrix, a road grade matrix, and a time-phased traffic congestion degree matrix of a highway traffic network are calculated; secondly, a weight influence factor of the road network is incorporated based on a PageRank algorithm to determine order of critical nodes; finally, a two-dimensional decision diagram is drawn by two indicators: order of critical nodes and a shortest path distance. A new weighting matrix which accords with the actual situation of the road network is obtained by incorporating a position weight matrix, a distance weight matrix, a road grade weight matrix and a dynamic traffic congestion degree weight matrix based on a similarity matrix of the spectral clustering.Type: ApplicationFiled: January 5, 2023Publication date: April 18, 2024Inventors: Xia Zhu, Yingying Pei, Yongtao Jin, Guohong Li, Yulong Hao, Yuanping Liu, Yuyan Liu, Longfang Duan, Cui Jia, Qiyue Liu, Tao Ma, Shan An, Jia Xi, Zhihong Song
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Publication number: 20230421626Abstract: A system and method for determining the performance of a real-time communication application, such as a video codec and transmission of the coded data. The method factors in burst data packet loss in determining a performance measure. The method uses a Hidden Markov Model on a set of data packets of a unit of data to determine the performance measure in the form a probability that all the data packets within the set are received. The measure is used to fine tune the system settings. The method causes the real-time communication application to adjust parameters of the application for improved transmission of data packets. The adjustment of a parameter can be an increase or a decrease.Type: ApplicationFiled: May 11, 2023Publication date: December 28, 2023Inventors: Sheng Zhong, Jiajie Jian, Tao Duan
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Publication number: 20230262209Abstract: A system and method for determining the performance of a video codec for real-time communication applications. A set of network conditions is used to simulate certain typical real-world network conditions. A coded video stream is transmitted from the transmitting end to the receiving end under these conditions. The end-to-end latency and received video fluency are measured along with a set of existing video quality measures by a video codec performance evaluation system including a network model and a video codec quality analyzer. The decodable frame ratio, latency and video fluency are used as the performance metrics for real-time communication video quality evaluation. The video codec performance evaluation system does not send any video data over a network when it determines the real-time communication quality of the video codec.Type: ApplicationFiled: January 5, 2023Publication date: August 17, 2023Inventors: Wei Dai, Sheng Zhong, Tao Duan, Zesen Zhuang, Xiajun Gu
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Patent number: 11439519Abstract: An under-driven prosthetic hand with a self-adaptive grasping function is provided, which belongs to the field of medical equipment. The prosthetic hand simultaneously controls four fingers to implement bending and stretching movements by a first motor through structural designs of a prosthetic hand body, a finger transmission module, an inter-finger transmission module, and a thumb driving module, and limits the transmission torque between the motor and screws using a damping shaft and in cooperation with the telescopic characteristic of a telescopic component. On the one hand, mechanical damage to the prosthetic hand structure due to excessive torque outputted by the motor can be prevented. On the other hand, the self-adaptive grasping function of the prosthetic hand can be implemented. The disclosure can also effectively solve issues such as excessive volume or mass of the prosthetic hand, complicated control system, and low operation precision.Type: GrantFiled: August 5, 2020Date of Patent: September 13, 2022Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Cai-Hua Xiong, Chuang Liu, Bai-Yang Sun, Zhi-Liang Xie, Tao Duan
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Patent number: 11384444Abstract: A method for electrochemical extraction of uranium from seawater using an oxygen vacancy (OV)-containing metal oxide includes the following steps: adding glycerin to a solution of indium nitrate in isopropanol, transferring a resulting mixture to a reactor, and conducting reaction to obtain a spherical indium hydroxide solid; dissolving the solid in deionized water, transferring a resulting solution to the reactor, and conducting reaction to obtain a flaky indium hydroxide solid; calcining the solid to obtain calcined OV-containing In2O3-x; adding the In2O3-x to ethanol, and adding a membrane solution; coating a resulting solution uniformly on carbon paper, and naturally drying the carbon paper; clamping dried carbon paper with a gold electrode for being used as a working electrode for a three-electrode system; and adding simulated seawater to an electrolytic cell, placing the three-electrode system in the simulated seawater, and stirring the simulated seawater for electrolysis to extract uranium from the seaType: GrantFiled: December 11, 2020Date of Patent: July 12, 2022Assignee: SOUTHWEST UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Wenkun Zhu, Rong He, Yi Li, Tao Duan, Jia Lei, Tao Chen, Fan Yang
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Patent number: 11293110Abstract: A method for extracting uranium with a coupling device of wind power generation and uranium extraction from seawater includes the following steps: adding oxygen vacancy (OV)-containing In2O3-x to absolute ethanol, and subjecting a resulting mixture to stirring and ultrasonic treatment to obtain a solution of In2O3-x in absolute ethanol; coating the solution uniformly on carbon cloth, and drying to obtain carbon cloth coated with OV-containing In2O3-x; inserting the coated carbon cloth (as a working electrode) and another blank carbon cloth (as a counter electrode) into a plastic carrier of a coupling device; fixing a small wind power generation apparatus above the plastic carrier, and connecting the working electrode and the counter electrode to a storage battery of the apparatus via wires; and placing the coupling device in seawater, and after the storage battery is charged, energizing the working electrode and the counter electrode to extract uranium from the seawater.Type: GrantFiled: December 15, 2020Date of Patent: April 5, 2022Assignee: SOUTHWEST UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Wenkun Zhu, Rong He, Yi Li, Tao Duan, Jia Lei, Tao Chen, Fan Yang
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Publication number: 20220090271Abstract: A method for electrochemical extraction of uranium from seawater using an oxygen vacancy (OV)-containing metal oxide includes the following steps: adding glycerin to a solution of indium nitrate in isopropanol, transferring a resulting mixture to a reactor, and conducting reaction to obtain a spherical indium hydroxide solid; dissolving the solid in deionized water, transferring a resulting solution to the reactor, and conducting reaction to obtain a flaky indium hydroxide solid; calcining the solid to obtain calcined OV-containing In2O3-x; adding the In2O3-x; to ethanol, and adding a membrane solution; coating a resulting solution uniformly on carbon paper, and naturally drying the carbon paper; clamping dried carbon paper with a gold electrode for being used as a working electrode for a three-electrode system; and adding simulated seawater to an electrolytic cell, placing the three-electrode system in the simulated seawater, and stirring the simulated seawater for electrolysis to extract uranium from the seType: ApplicationFiled: December 11, 2020Publication date: March 24, 2022Applicant: SOUTHWEST UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Wenkun ZHU, Rong HE, Yi LI, Tao DUAN, Jia LEI, Tao CHEN, Fan YANG
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Patent number: 11277182Abstract: The present application relates to the field of communications, and in particular to a hybrid beam forming architecture-based calibration compensation method and apparatus for improving the accuracy and effectiveness of calibration compensation. The method comprises: a base station determining a preset calibration weight vector matrix W and a preset first calibration signal matrix S, then transmitting N times consecutively calibration signals through analog transmission channels, calculating, according to the calibration weight vector matrix W, the first calibration signal matrix S and a first received data vector matrix YTX, a transmission channel error matrix ETX, and then performing error compensation on the analog transmission channels based on ETX.Type: GrantFiled: March 4, 2020Date of Patent: March 15, 2022Assignee: Datang Mobile Communications Equipment Co., Ltd.Inventors: Jingyan Ma, Shihua Wang, Tao Duan, Jian Wu, Yongli Zhang
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Publication number: 20220042194Abstract: A method for extracting uranium with a coupling device of wind power generation and uranium extraction from seawater includes the following steps: adding oxygen vacancy (OV)-containing In2O3-x to absolute ethanol, and subjecting a resulting mixture to stirring and ultrasonic treatment to obtain a solution of In2O3-x in absolute ethanol; coating the solution uniformly on carbon cloth, and drying to obtain carbon cloth coated with OV-containing In2O3-x; inserting the coated carbon cloth (as a working electrode) and another blank carbon cloth (as a counter electrode) into a plastic carrier of a coupling device; fixing a small wind power generation apparatus above the plastic carrier, and connecting the working electrode and the counter electrode to a storage battery of the apparatus via wires; and placing the coupling device in seawater, and after the storage battery is charged, energizing the working electrode and the counter electrode to extract uranium from the seawater.Type: ApplicationFiled: December 15, 2020Publication date: February 10, 2022Applicant: SOUTHWEST UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Wenkun ZHU, Rong HE, Yi LI, Tao DUAN, Jia LEI, Tao CHEN, Fan YANG
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Publication number: 20220045728Abstract: The present application relates to the field of communications, and in particular to a hybrid beam forming architecture-based calibration compensation method and apparatus for improving the accuracy and effectiveness of calibration compensation. The method comprises: a base station determining a preset calibration weight vector matrix W and a preset first calibration signal matrix S, then transmitting N times consecutively calibration signals through analog transmission channels, calculating, according to the calibration weight vector matrix W, the first calibration signal matrix S and a first received data vector matrix YTX, a transmission channel error matrix ETX, and then performing error compensation on the analog transmission channels based on ETX.Type: ApplicationFiled: March 4, 2020Publication date: February 10, 2022Inventors: Jingyan MA, Shihua WANG, Tao DUAN, Jian WU, Yongli ZHANG
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Publication number: 20210353437Abstract: An under-driven prosthetic hand with a self-adaptive grasping function is provided, which belongs to the field of medical equipment. The prosthetic hand simultaneously controls four fingers to implement bending and stretching movements by a first motor through structural designs of a prosthetic hand body, a finger transmission module, an inter-finger transmission module, and a thumb driving module, and limits the transmission torque between the motor and screws using a damping shaft and in cooperation with the telescopic characteristic of a telescopic component. On the one hand, mechanical damage to the prosthetic hand structure due to excessive torque outputted by the motor can be prevented. On the other hand, the self-adaptive grasping function of the prosthetic hand can be implemented. The disclosure can also effectively solve issues such as excessive volume or mass of the prosthetic hand, complicated control system, and low operation precision.Type: ApplicationFiled: August 5, 2020Publication date: November 18, 2021Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Cai-Hua Xiong, Chuang Liu, Bai-Yang Sun, Zhi-Liang Xie, Tao Duan
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Patent number: 11171417Abstract: Disclosed in the present application are a method and an apparatus for calibrating an antenna. In the method, in a receiving channel calibration process, first a receiving channel beam weight matrix is initially updated by using a receiving calibration signal from a reference beam direction, i.e., performing initial receiving channel calibration, and then, for different beam direction regions, beam weight vectors corresponding to multiple beam directions within particular beam direction regions are updated.Type: GrantFiled: July 24, 2019Date of Patent: November 9, 2021Assignee: Datang Mobile Communications Equipment Co., Ltd.Inventors: Jingyan Ma, Shihua Wang, Tao Duan, Jian Wu, Jieli Wang
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Patent number: 11128382Abstract: The disclosure relates to a multi-modulation-format compatible high-speed laser signal generation system and method. The disclosure can greatly improve modulation format compatibility of a laser communication system and saves system upgrading costs and resource costs. The system mainly includes a control instruction unit, a serial-parallel changeover switch unit, a precoding switch unit, a power control unit, an IQ modulator, a narrow line width laser, and a bias point control unit, wherein the control instruction unit is respectively connected to the serial-parallel changeover switch unit, the precoding switch unit, the power control unit, and the bias point control unit; the serial-parallel changeover switch unit, the precoding switch unit, the power control unit, and the IQ modulator are electrically connected in sequence; the narrow line width laser is connected to an optical input end of the IQ modulator; and the bias point control unit is connected to the IQ modulator.Type: GrantFiled: September 13, 2018Date of Patent: September 21, 2021Assignee: XI'AN INSTITUTE OF OPTICS AND PRECISION MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Xiaoping Xie, Xinning Huang, Wei Wang, Tao Duan, Hui Hu, Yulong Su, Duorui Gao
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Publication number: 20210257730Abstract: Disclosed in the present application are a method and an apparatus for calibrating an antenna. In the method, in a receiving channel calibration process, first a receiving channel beam weight matrix is initially updated by using a receiving calibration signal from a reference beam direction, i.e., performing initial receiving channel calibration, and then, for different beam direction regions, beam weight vectors corresponding to multiple beam directions within particular beam direction regions are updated.Type: ApplicationFiled: July 24, 2019Publication date: August 19, 2021Inventors: Jingyan MA, Shihua WANG, Tao DUAN, Jian WU, Jieli WANG
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Patent number: 11088762Abstract: A phase-lock-free system includes a control instruction unit, a low-noise high-gain optical amplifier, an optical switch, a filter, an optical delay interferometer I, an optical delay interferometer Q, a first balanced detector, a second balanced detector, an anti-coding switch unit, a parallel-serial conversion unit, and a data processing unit. The control instruction unit is connected to the optical switch, the anti-coding switch unit, and the parallel-serial conversion unit, respectively; the low-noise high-gain optical amplifier is connected to the optical switch; the optical switch is connected to the first balanced detector and the second balanced detector by means of the filter, the optical delay interferometer I, and the optical delay interferometer Q, respectively. This system improves the compatibility of a communication system at a relay node in an existing laser communication network.Type: GrantFiled: September 13, 2018Date of Patent: August 10, 2021Assignee: XI'AN INSTITUTE OF OPTICS AND PRECISION MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Xinning Huang, Wei Wang, Xiaoping Xie, Yulong Su, Hui Hu, Tao Duan, Duorui Gao
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Patent number: 11005580Abstract: An array antenna calibration method and device, which is used for calibrating an array antenna in real time in an open calibration environment. The method includes: determining, on the basis of a preset direction angle of each preset beam direction, an initial beam weight vector matrix of an array antenna to be calibrated, and emitting, by a test antenna in a standard beam direction, a first calibration signal to the array antenna to be calibrated; determining, on the basis of the first calibration signal received by each channel of the array antenna to be calibrated, a magnitude-phase error between the first calibration signal received by a center channel and the first calibration signal received by each channel; and using the magnitude-phase error to calibrate the initial beam weight vector matrix, so as to obtain a compensation beam weight vector matrix.Type: GrantFiled: September 4, 2018Date of Patent: May 11, 2021Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.Inventors: Shihua Wang, Tao Duan, Jingyan Ma
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Publication number: 20210135758Abstract: A phase-lock-free system includes a control instruction unit, a low-noise high-gain optical amplifier, an optical switch, a filter, an optical delay interferometer I, an optical delay interferometer Q, a first balanced detector, a second balanced detector, an anti-coding switch unit, a parallel-serial conversion unit, and a data processing unit. The control instruction unit is connected to the optical switch, the anti-coding switch unit, and the parallel-serial conversion unit, respectively; the low-noise high-gain optical amplifier is connected to the optical switch; the optical switch is connected to the first balanced detector and the second balanced detector by means of the filter, the optical delay interferometer I, and the optical delay interferometer Q, respectively. This system improves the compatibility of a communication system at a relay node in an existing laser communication network.Type: ApplicationFiled: September 13, 2018Publication date: May 6, 2021Inventors: Xinning HUANG, Wei WANG, Xiaoping XIE, Yulong SU, Hui HU, Tao DUAN, Duorui GAO