Patents by Inventor Xiang Tian

Xiang Tian 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: 11959535
    Abstract: A continuously variable transmission with both equal-difference output and equal-ratio output includes an input mechanism, a hydraulic transmission mechanism, a planetary-gear-set convergence mechanism, an equal-difference output mechanism, an equal-ratio output mechanism, a clutch assembly, and a brake. The clutch assembly connects an output end of the input mechanism to an input end of the hydraulic transmission mechanism and the planetary-gear-set convergence mechanism and connects an output end of the hydraulic transmission mechanism to the planetary-gear-set convergence mechanism. The clutch assembly connects the planetary-gear-set convergence mechanism to the equal-difference output mechanism and the equal-ratio output mechanism. The clutch assembly connects the equal-ratio output mechanism to the equal-difference output mechanism.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: April 16, 2024
    Assignee: JIANGSU UNIVERSITY
    Inventors: Zhen Zhu, Lingxin Zeng, Yingfeng Cai, Long Chen, Yanpeng Yang, Dongqing Wang, Yulin Deng, Xiaodong Sun, Xiang Tian, Yong Wang, Falin Zeng, Chaofeng Pan
  • Publication number: 20240117869
    Abstract: A continuously variable transmission with both equal-difference output and equal-ratio output includes an input mechanism, a hydraulic transmission mechanism, a planetary-gear-set convergence mechanism, an equal-difference output mechanism, an equal-ratio output mechanism, a clutch assembly, and a brake. The clutch assembly connects an output end of the input mechanism to an input end of the hydraulic transmission mechanism and the planetary-gear-set convergence mechanism and connects an output end of the hydraulic transmission mechanism to the planetary-gear-set convergence mechanism. The clutch assembly connects the planetary-gear-set convergence mechanism to the equal-difference output mechanism and the equal-ratio output mechanism. The clutch assembly connects the equal-ratio output mechanism to the equal-difference output mechanism.
    Type: Application
    Filed: January 10, 2022
    Publication date: April 11, 2024
    Applicant: JIANGSU UNIVERSITY
    Inventors: Zhen ZHU, Lingxin ZENG, Yingfeng CAI, Long CHEN, Yanpeng YANG, Dongqing WANG, Yulin DENG, Xiaodong SUN, Xiang TIAN, Yong WANG, Falin ZENG, Chaofeng PAN
  • Publication number: 20240095965
    Abstract: In a method, a base mesh is generated from a down-sampled input mesh in a current frame, where the base mesh includes a plurality of vertices. A prediction mode to be applied to the base mesh is determined. The prediction mode is an inter prediction mode or an intra prediction mode. Based on the prediction mode being determined as the intra prediction mode, duplicate vertices among the plurality of vertices in the base mesh are merged to generate a subset of the plurality of vertices. At least the subset of the plurality of vertices is encoded based on the determined intra prediction mode to generate prediction information of at least the subset of the plurality of vertices.
    Type: Application
    Filed: June 9, 2023
    Publication date: March 21, 2024
    Applicant: Tencent America LLC
    Inventors: Jun TIAN, Xiang ZHANG, Xiaozhong XU, Chao HUANG, Shan LIU
  • Patent number: 11928861
    Abstract: In some examples, a computer system may receive an image and associated location information corresponding to a location at which the image was captured. The system may provide the image as input to a machine-learning model previously trained to determine whether the received image includes a threshold amount of information to indicate that received location information indicates a location corresponding to the received image. Based at least in part on an output of the machine-learning model indicating that the received image meets the threshold, the system may store the associated location information as mapping information associated with the location.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: March 12, 2024
    Assignee: DOORDASH, INC.
    Inventors: Sushil Vellanki, Kuleen Nimkar, Li Xiang Tian
  • Publication number: 20240078713
    Abstract: Method, apparatus, and system for texture coordinate prediction for mesh compression are provided. The process may include receiving, for a mesh, a coordinate of a first vertex and a coordinate of a prediction candidate vertex in a three dimensional (3D) space. The process may include determining a stretch perpendicular distance associated with the first vertex and the prediction candidate vertex, the stretch perpendicular distance being based on a conversion of the 3D space into a two dimensional (2D) space, and determining a 2D texture coordinate of the first vertex based on the stretch perpendicular distance associated with the first vertex and the prediction candidate vertex. The process may also include determining a residual of a predicted coordinate of the first vertex and an actual 2D coordinate of the first vertex; and compressing the mesh based on entropy coding the residual.
    Type: Application
    Filed: June 30, 2023
    Publication date: March 7, 2024
    Applicant: Tencent America LLC
    Inventors: Shan Liu, Jun Tian, Xiaozhong Xu, Chao Huang, Xiang Zhang
  • Patent number: 11922664
    Abstract: A processing circuitry decodes a plurality of maps in 2D from a bitstream carrying a mesh frame. The mesh frame represents a surface of an object with polygons. The plurality of maps includes a decoded geometry map and a decoded attribute map with an adaptive 2D atlas sampling applied. The processing circuitry determines at least a first sampling rate and a second sampling rate according to syntaxes signaled in the bitstream. The first sampling rate is applied to a first region of the mesh frame and the second sampling rate is applied to a second region of the mesh frame during the adaptive 2D atlas sampling. The processing circuitry reconstructs, based on the plurality of maps, at least a first vertex of the mesh frame according to the first sampling rate, and a second vertex of the mesh frame according to the second sampling rate.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: March 5, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Xiang Zhang, Shan Liu, Xiaozhong Xu, Chao Huang, Jun Tian
  • Patent number: 11924434
    Abstract: Aspects of the disclosure provide methods and apparatuses for mesh coding (e.g., compression and decompression). In some examples, an apparatus for mesh coding includes processing circuitry. The processing circuitry decodes a plurality of initial maps in two-dimension from a bitstream carrying a three-dimensional (3D) mesh frame. The processing circuitry determines at least two sampling rates associated with different portions of the plurality of initial maps and recovers from the plurality of initial maps and based on the at least two sampling rates associated with the different portions of the plurality of initial maps to obtain a plurality of recovered maps. A first portion of the plurality of initial maps is recovered based on a first sampling rate, and a second portion of the plurality of initial maps is recovered based on a second sampling rate. The processing circuitry reconstructs the 3D mesh frame based on the plurality of recovered maps.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: March 5, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Xiaozhong Xu, Xiang Zhang, Shan Liu, Chao Huang, Jun Tian
  • Patent number: 11922986
    Abstract: The present invention relates to a kind of magnetic heterojunction structure and the method of controlling and achieving spin logic and multiple-state storage functions. The said single magnetic heterojunction structure comprises the substrate, in-plane anti-ferromagnetic layer, in-plane ferromagnetic layer, nonmagnetic layer, vertical ferromagnetic layer, and vertical anti-ferromagnetic layer respectively from the bottom up; the said in-plane ferromagnetic layer and the said vertical ferromagnetic layer are coupled together through the said nonmagnetic layer in the middle; in-plane exchange biases, namely exchange biases in the plane, exist between the said in-plane ferromagnetic layer and the said in-plane anti-ferromagnetic layer, and out-of-plane exchange biases, namely exchange biases out of the plane, exist between the said vertical ferromagnetic layer and the said vertical anti-ferromagnetic layer.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: March 5, 2024
    Assignee: SHAN DONG UNIVERSITY
    Inventors: Shishen Yan, Yufeng Tian, Lihui Bai, Yibo Fan, Xiang Han
  • Publication number: 20240073433
    Abstract: Coding information of a mesh is received. The coding information includes a plurality of first coordinates and a plurality of second coordinates corresponding to a plurality of vertices and a texture map that are associated with the mesh. A respective first coordinate and a respective second coordinate associated with each of the plurality of vertices are normalized by adjusting the respective first coordinate based on a first factor and the respective second coordinate based on a second factor. The first factor and the second factor are associated with at least one of (i) a bit depth value indicating a coded range of the first coordinates and the second coordinates and (ii) a size of the texture map. The normalized respective first coordinate and the normalized respective second coordinate are expanded based on the first factor and the second factor respectively.
    Type: Application
    Filed: June 9, 2023
    Publication date: February 29, 2024
    Applicant: Tencent America LLC
    Inventors: Jun TIAN, Xiaozhong XU, Chao HUANG, Xiang ZHANG, Shan LIU
  • Patent number: 11773954
    Abstract: A multi-mode hydro-mechanical hybrid transmission device includes an input member, a hydraulic transmission mechanism, a mechanical transmission mechanism, a convergence mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects an output end of the input member to an input end of the hydraulic transmission mechanism, the mechanical transmission mechanism, and the convergence mechanism. The clutch assembly connects an output end of the hydraulic transmission mechanism to the convergence mechanism. The clutch assembly connects the mechanical transmission mechanism to the convergence mechanism. The convergence mechanism is connected to the output member. Continuously changing transmission ratios are provided between the input member and the output member by adjusting a displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the clutch assembly and the brake assembly.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: October 3, 2023
    Assignee: JIANGSU UNIVERSITY
    Inventors: Zhen Zhu, Jie Sheng, Yingfeng Cai, Long Chen, Xiaodong Sun, Xiang Tian, Changgao Xia, Yihan Zhang, Rui Hou
  • Publication number: 20230287969
    Abstract: A multi-mode hydro-mechanical hybrid transmission device includes an input member, a hydraulic transmission mechanism, a mechanical transmission mechanism, a convergence mechanism, an output member, a clutch assembly, and a brake assembly. The clutch assembly connects an output end of the input member to an input end of the hydraulic transmission mechanism, the mechanical transmission mechanism, and the convergence mechanism. The clutch assembly connects an output end of the hydraulic transmission mechanism to the convergence mechanism. The clutch assembly connects the mechanical transmission mechanism to the convergence mechanism. The convergence mechanism is connected to the output member. Continuously changing transmission ratios are provided between the input member and the output member by adjusting a displacement ratio of the hydraulic transmission mechanism and selectively controlling engagement of the clutch assembly and the brake assembly.
    Type: Application
    Filed: February 24, 2022
    Publication date: September 14, 2023
    Applicant: JIANGSU UNIVERSITY
    Inventors: Zhen ZHU, Jie SHENG, Yingfeng CAI, Long CHEN, Xiaodong SUN, Xiang TIAN, Changgao XIA, Yihan ZHANG, Rui HOU
  • Patent number: 11735200
    Abstract: The present invention discloses a dual-microphone adaptive filtering algorithm for collecting body sound signals, characterized in that, using at least two microphones, a primary microphone and a secondary microphone, to collect signals; the primary microphone is used to collect noisy body sound signals, and the secondary microphone is used to collect environmental noise; applying a same high-pass filtering to signals collected by the primary microphone and signals collected by the secondary microphone; using a normalized least mean square algorithm on the primary microphone signals and the secondary microphone signals after the high-pass filtering to calculate a weight of the adaptive filter and to calculate an error signal to filter out environmental noise in the primary microphone signals; processing the error signal for a first time by a low-pass filtering to restore the body sound signals, to obtain the body sound signals output by the adaptive filtering algorithm.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: August 22, 2023
    Assignees: SOUTH CHINA UNIVERSITY OF TECHNOLOGY, FOSHAN BAIBUTI MEDICAL TECHNOLOGY CO., LTD.
    Inventors: Hongqiang Mo, Xiang Tian
  • Patent number: 11614151
    Abstract: A power split and power convergence combined hydro-mechanical hybrid transmission device includes an input member, a power split mechanism, a mechanical transmission mechanism, a power convergence mechanism, an output member, a hydraulic transmission mechanism, a clutch assembly, and a brake assembly. The input member is connected to the power split mechanism, the power convergence mechanism is connected to the output member, and the clutch assembly connects an output end of the power split mechanism to an input end of the mechanical transmission mechanism and an input end of the hydraulic transmission mechanism and connects an input end of the power convergence mechanism to an output end of the mechanical transmission mechanism and an output end of the hydraulic transmission mechanism. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: March 28, 2023
    Assignee: JIANGSU UNIVERSITY
    Inventors: Zhen Zhu, Yingfeng Cai, Long Chen, Xiang Tian, Juncheng Wang, Changgao Xia, Jiangyi Han, Feng Wang, Xing Xu, Dehua Shi
  • Publication number: 20230093635
    Abstract: A communication method applied to a first electronic apparatus includes, after establishing a communication connection with a second electronic apparatus, obtaining configuration information from the second electronic apparatus, monitoring a communication state between the first electronic apparatus and the second electronic apparatus, and saving or deleting second description information corresponding to the second electronic apparatus based on the configuration information after the first electronic apparatus is disconnected from the second electronic apparatus. The second description information includes information that represents uniqueness of the second electronic apparatus.
    Type: Application
    Filed: March 14, 2022
    Publication date: March 23, 2023
    Inventor: Xiang TIAN
  • Publication number: 20220373072
    Abstract: A power split and power convergence combined hydro-mechanical hybrid transmission device includes an input member, a power split mechanism, a mechanical transmission mechanism, a power convergence mechanism, an output member, a hydraulic transmission mechanism, a clutch assembly, and a brake assembly. The input member is connected to the power split mechanism, the power convergence mechanism is connected to the output member, and the clutch assembly connects an output end of the power split mechanism to an input end of the mechanical transmission mechanism and an input end of the hydraulic transmission mechanism and connects an input end of the power convergence mechanism to an output end of the mechanical transmission mechanism and an output end of the hydraulic transmission mechanism. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 24, 2022
    Applicant: JIANGSU UNIVERSITY
    Inventors: Zhen ZHU, Yingfeng CAI, Long CHEN, Xiang TIAN, Juncheng WANG, Changgao XIA, Jiangyi HAN, Feng WANG, Xing XU, Dehua SHI
  • Patent number: 11499616
    Abstract: A hydro-mechanical hybrid transmission device with an energy management mechanism includes an input member, a mechanical transmission mechanism, an energy management mechanism, a power output mechanism, an output member, a convergence mechanism, a start mechanism, a hydraulic transmission mechanism, a clutch assembly, and a brake assembly. The clutch assembly connects the input member to the mechanical transmission mechanism, the power output mechanism, and the hydraulic transmission mechanism, and connects the energy management mechanism to the mechanical transmission mechanism and the power output mechanism. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member and/or the power output mechanism, between the energy management mechanism and the output member and/or the power output mechanism, and between the energy management mechanism together with the input member and the output member and/or the power output mechanism.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: November 15, 2022
    Assignee: JIANGSU UNIVERSITY
    Inventors: Yingfeng Cai, Zhen Zhu, Long Chen, Changgao Xia, Juncheng Wang, Xiang Tian, Jiangyi Han, Jianguo Zhu, LongHui Lai, Xing Xu
  • Patent number: 11443437
    Abstract: The present invention discloses a ViBe-based three-dimensional sonar point cloud image segmentation method, characterized by including: (1) acquiring sonar data, and converting three-dimensional sonar depth image data corresponding to each frame of the sonar data to point cloud data under an orthogonal coordinate system; (2) sampling the point cloud data, and down-sampling the point cloud data to a plurality of adjacent voxels with side length being R by taking a variable resolution R as a function; (3) carrying out image segmentation on the down-sampled point cloud data by a ViBe algorithm; (4) carrying out accumulative scoring on each voxel according to an image segmentation result, and sorting foreground data and background data according to accumulative score; and (5) clustering the foreground data, and then carrying out expansion operation on the foreground data by taking an original point in the voxel as a center to obtain final foreground point cloud data.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: September 13, 2022
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Yaowu Chen, Xiang Tian, Xuesong Liu, Rongxin Jiang
  • Patent number: 11408496
    Abstract: A gear-hydraulic-metal belt integrated multi-mode hydro-mechanical hybrid transmission device includes an input assembly, an output assembly, a metal belt transmission mechanism, a planetary gear assembly, a hydraulic transmission mechanism, a clutch assembly and a brake assembly. The input assembly is connected to the metal belt transmission mechanism, the planetary gear assembly and the hydraulic transmission mechanism. The metal belt transmission mechanism and the hydraulic transmission mechanism are connected to the planetary gear assembly. The planetary gear assembly is connected to the output assembly. The clutch assembly connects the input assembly to the metal belt transmission mechanism and the planetary gear assembly, and connects each of the metal belt transmission mechanism and the hydraulic transmission mechanism to the planetary gear assembly. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input assembly and the output assembly.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: August 9, 2022
    Assignee: Jiangsu University
    Inventors: Zhen Zhu, Yingfeng Cai, Long Chen, Xiang Tian, Changgao Xia, Falin Zeng, Chaochun Yuan, Jiajia Wang, Xiaodong Sun, Dehua Shi
  • Publication number: 20220213951
    Abstract: A hydro-mechanical hybrid transmission device with an energy management mechanism includes an input member, a mechanical transmission mechanism, an energy management mechanism, a power output mechanism, an output member, a convergence mechanism, a start mechanism, a hydraulic transmission mechanism, a clutch assembly, and a brake assembly. The clutch assembly connects the input member to the mechanical transmission mechanism, the power output mechanism, and the hydraulic transmission mechanism, and connects the energy management mechanism to the mechanical transmission mechanism and the power output mechanism. The clutch assembly and the brake assembly provide a continuous transmission ratio between the input member and the output member and/or the power output mechanism, between the energy management mechanism and the output member and/or the power output mechanism, and between the energy management mechanism together with the input member and the output member and/or the power output mechanism.
    Type: Application
    Filed: August 4, 2020
    Publication date: July 7, 2022
    Applicant: JIANGSU UNIVERSITY
    Inventors: Yingfeng CAI, Zhen ZHU, Long CHEN, Changgao XIA, Juncheng WANG, Xiang TIAN, Jiangyi HAN, Jianguo ZHU, LongHui LAI, Xing XU
  • Patent number: 11359707
    Abstract: A hydro-mechanical transmission device with a dual-clutch transmission includes an input mechanism, a pump-controlled motor mechanism, an odd-numbered gear transmission mechanism, an even-numbered gear transmission mechanism, an output mechanism, and a jackshaft. The input mechanism is connected to the odd-numbered gear transmission mechanism and the even-numbered gear transmission mechanism that are connected in parallel, and is connected to an input end of the pump-controlled motor mechanism. An output end of the pump-controlled motor mechanism is connected, through the jackshaft, to the odd-numbered gear transmission mechanism and the even-numbered gear transmission mechanism that are connected in parallel, and is connected to the output mechanism. Switching among hydraulic transmission, hydro-mechanical transmission, and mechanical transmission modes between the input mechanism and the output mechanism is implemented by controlling combination and engagement/disengagement of clutches and a brake.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: June 14, 2022
    Assignee: JIANGSU UNIVERSITY
    Inventors: Zhen Zhu, Yingfeng Cai, Long Chen, Changgao Xia, Xiang Tian, Jiajia Wang, Falin Zeng, Xiaodong Sun, Dehua Shi, Xing Xu