Patents by Inventor Yongjian Wu

Yongjian Wu 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).

  • Publication number: 20210330458
    Abstract: The invention discloses an auxiliary balloon structure for transcatheter aortic valve replacement (TAVR), which comprises a balloon head and a balloon body. When unexpanded, the balloon body has two conical ends and a cylindrical middle part. The conical ends are defined as a front and a rear conical part. The cylindrical middle part is provided with a mastoid structure. The front and rear conical parts are made of a semi-compliant material, while the cylindrical middle part is made of a non-compliant material.
    Type: Application
    Filed: May 28, 2020
    Publication date: October 28, 2021
    Inventors: Yongjian WU, Qingrong LIU
  • Publication number: 20210315031
    Abstract: A method and device for managing establishment of a communications link between an external instrument (EI) and an implantable medical device (IMD) are provided. The method stores, in a memory in at least one of the IMD or the EI, a base scanning schedule that defines a pattern for scanning windows over a scanning state. The method enters the scanning state during which a receiver scans for advertisement notices during the scanning windows. At least a portion of the scanning windows are grouped in a first segment of the scanning state. The method stores, in the memory, a scan reset pattern for restarting the scanning state. Further, the method automatically restarts the scanning state based on the scan reset pattern to form a pseudo-scanning schedule that differs from the base scanning schedule and establishes a communication session between the IMD and the EI.
    Type: Application
    Filed: April 2, 2020
    Publication date: October 7, 2021
    Inventors: Yongjian Wu, Jyoti Bhayana, Chao-Wen Young, Tejpal Singh, Samir Shah
  • Patent number: 11087476
    Abstract: A trajectory tracking method is provided for a computer device. The method includes performing motion tracking on head images in a plurality of video frames, to obtain motion trajectories corresponding to the head images; acquiring face images corresponding to the head images in the video frames, to obtain face image sets corresponding to the head images; determining from the face image sets corresponding to the head images, at least two face image sets having same face images; and combining motion trajectories corresponding to the at least two face image sets having same face images, to obtain a final motion trajectory of trajectory tracking.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: August 10, 2021
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Changwei He, Chengjie Wang, Jilin Li, Yabiao Wang, Yandan Zhao, Yanhao Ge, Hui Ni, Yichao Xiong, Zhenye Gan, Yongjian Wu, Feiyue Huang
  • Publication number: 20210220125
    Abstract: A prosthetic tissue valve and a method of treating the prosthetic tissue valve are provided. The method includes: decreasing a temperature of a chamber carrying the prosthetic tissue valve from a first preset temperature to a second preset temperature in a first cooling rate; decreasing the temperature of the chamber carrying the prosthetic tissue valve from the second preset temperature to a third preset temperature in a second cooling rate; and performing a drying process to the prosthetic tissue valve. The second preset temperature is a critical crystallization temperature and is greater than a crystallization temperature of the prosthetic tissue valve. The third preset temperature is lower than the crystallization temperature of the prosthetic tissue valve, and the second cooling rate is greater than the first cooling rate.
    Type: Application
    Filed: April 3, 2020
    Publication date: July 22, 2021
    Applicant: Peijia Medical (Suzhou) Co., Ltd.
    Inventors: Kongrong Karl PAN, Yi ZHANG, Kun ZHANG, Yongjian WU, Mao CHEN, Yida TANG
  • Patent number: 11007370
    Abstract: A method is provided for establishing a communication session with an implantable medical device (“IMD”). The method includes configuring an IMD and an external device to communicate with one another through a protocol that utilizes a dedicated advertisement channel. The advertisement period and the scan period of the protocol are independent of one another such that the advertisement and scan periods at least partially overlap intermittently after a number of cycles. When the external device detects one of the advertisement notices, the method includes establishing a communications link between the external device and the IMD.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: May 18, 2021
    Assignee: PACESETTER, INC.
    Inventors: Reza Shahandeh, Richard Williamson, Gabriel A. Mouchawar, Brent Croft, William Winstrom, Robert McCormick, Jorge N. Amely-Velez, Thanh Tieu, Ali Dianaty, Samir Shah, Yongjian Wu
  • Publication number: 20210076312
    Abstract: An implantable medical device (IMD) that includes a transceiver configured to broadcast an advertising data packet that includes a unique identifier, and to receive a scan request data packet from an external device. A memory stores program instructions, and stores an approved device list, and one or more processors are configured to execute the program instructions to identify a device identifier (ID) from the scan request data packet received, apply an advertising filter to determine if the scan request data packet is from an authorized external device based on the device ID and the approved device list, based on the determination by the advertising filter, deny transmission of a scan response data packet from the transceiver when the advertising filter determines that the scan request data packet is from an unauthorized external device, and establish a communication session with an authorized external device independent of the scan request data packet.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Inventors: Chaowen Young, Yongjian Wu, Jyoti Bhayana, Samir Shah, Reza Shahandeh
  • Publication number: 20210046323
    Abstract: A method is provided for establishing a communication session with an implantable medical device (“IMD”). The method includes configuring an IMD and an external device to communicate with one another through a protocol that utilizes a dedicated advertisement channel. The advertisement period and the scan period of the protocol are independent of one another such that the advertisement and scan periods at least partially overlap intermittently after a number of cycles. When the external device detects one of the advertisement notices, the method includes establishing a communications link between the external device and the IMD.
    Type: Application
    Filed: November 2, 2020
    Publication date: February 18, 2021
    Inventors: Reza Shahandeh, Richard Williamson, Gabriel Mouchawar, Brent Croft, William Winstrom, Robert McCormick, Jorge N. Amely-Velez, Thanh Tieu, Ali Dianaty, Samir Shah, Yongjian Wu
  • Patent number: 10909989
    Abstract: An identity vector generation method is provided. The method includes obtaining to-be-processed speech data. Corresponding acoustic features are extracted from the to-be-processed speech data. A posterior probability that each of the acoustic features belongs to each Gaussian distribution component in a speaker background model is calculated to obtain a statistic. The statistic is mapped to a statistic space to obtain a reference statistic, the statistic space built according to a statistic corresponding to a speech sample exceeding a threshold speech duration. A corrected statistic is determined according to the calculated statistic and the reference statistic; and an identity vector is generated according to the corrected statistic.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: February 2, 2021
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Wei Li, Binghua Qian, Xingming Jin, Ke Li, Fuzhang Wu, Yongjian Wu, Feiyue Huang
  • Patent number: 10880826
    Abstract: An implantable medical device (IMD) that includes a transceiver configured to broadcast an advertising data packet that includes a unique identifier, and to receive a scan request data packet from an external device. A memory stores program instructions, and stores an approved device list, and one or more processors are configured to execute the program instructions to identify a device identifier (ID) from the scan request data packet received, apply an advertising filter to determine if the scan request data packet is from an authorized external device based on the device ID and the approved device list, based on the determination by the advertising filter, deny transmission of a scan response data packet from the transceiver when the advertising filter determines that the scan request data packet is from an unauthorized external device, and establish a communication session with an authorized external device independent of the scan request data packet.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: December 29, 2020
    Assignee: Pacesetter, Inc.
    Inventors: Chaowen Young, Yongjian Wu, Jyoti Bhayana, Samir Shah, Reza Shahandeh
  • Publication number: 20200397575
    Abstract: The invention discloses a loading sheathing canal and a delivery system, wherein the loading sheathing canal is provided with a rigid interlayer and a flexible outer wall, and a plurality of cutting grooves are formed in the circumferential direction of the rigid interlayer, and cutting fractures are arranged between two ends of the cutting grooves, and the rigid interlayer can be directionally bent via the cutting grooves. A handle of the delivery system is connected to the loading sheathing canal for controlling the movement of the loading sheathing canal. The loading sheathing canal provided by the invention has sufficient axial tensile and compressive resistance and radial compressive resistance, and certain capability to pass through a bend, and cannot puncture a blood vessel due to insufficient bending performance.
    Type: Application
    Filed: December 19, 2019
    Publication date: December 24, 2020
    Inventors: Xiaojian LIU, Yongjian WU, Tong LIU, Kejin QIU, Xuancheng ZHAO, Rencao CHANG, Yuxin ZHANG
  • Publication number: 20200390543
    Abstract: A valved stent is disclosed. The valved stent has an inflow end and an outflow end, a waist portion is concavely formed near the inflow end to determine and limit a position of the valved stent, and a connecting portion is disposed at the outflow end and used for being connected with a delivery system. The heart valve comprises a valve body, a skirt edge and the valved stent, wherein the valve body is disposed on an inner side of the valved stent, the skirt edge is an elastomer, and the elastomer is coupled to the valve body and disposed on a peripheral wall of the valved stent for sealing the periphery of the valve. The heart valve has the function of active positioning, and can effectively prevent the positioned valved stent from shifting. The heart valve is characterized by active positioning and self-adaption of an aortic valve annulus.
    Type: Application
    Filed: December 19, 2019
    Publication date: December 17, 2020
    Inventors: Xuancheng ZHAO, Yongjian WU, Qingrong LIU, Kejin QIU, Rencao CHANG, Yuxin ZHANG
  • Publication number: 20200384161
    Abstract: A composite anti-restenosis drug for use with a coronary drug-eluting stent, and a controlled release system for the drug. The composite drug comprises arsenic trioxide and rapamycin, which may be used in combination to prevent in-stent restenosis and reduce the incidence of intravascular thrombosis. The controlled release system for the composite drug may control the release of the composite drug so as to achieve the therapeutic effect of controlling restenosis and preventing the formation of thromboses.
    Type: Application
    Filed: July 20, 2018
    Publication date: December 10, 2020
    Applicant: XINXIN MEDICAL TECHNOLOGY (SHANGHAI) CO. LTD
    Inventors: Yawei XU, Shaoping NIE, Yongjian WU, Fugui HE, Xiaoyi MA
  • Publication number: 20200383053
    Abstract: A method for managing power during communication with an implantable medical device, including establishing a communications link, utilizing a power corresponding to a session start power, to initiate a current session between an implantable medical device (IMD) and external device. A telemetry break condition of the communications link is monitored during the current session. The power utilized by the IMD is adjusted between low and high power levels, during the current session based on the telemetry break condition. The number of sessions is counted, including the current session and one or more prior sessions, in which the IMD utilized the higher power level, and a level for the session start power to be utilized to initiate a next session following the current session is adaptively learned based on the counting of the number of sessions.
    Type: Application
    Filed: August 17, 2020
    Publication date: December 3, 2020
    Inventors: Perry Li, Lequan Zhang, Xing Pei, Jeffery Crook, Yongjian Wu, Jun Yang, Chao-Wen Young
  • Patent number: 10854207
    Abstract: A method and an apparatus for training a voiceprint recognition system are provided. The method includes obtaining a voice training data set comprising voice segments of users; determining identity vectors of all the voice segments; identifying identity vectors of voice segments of a same user in the determined identity vectors; placing the recognized identity vectors of the same user in the users into one of user categories; and determining an identity vector in the user category as a first identity vector. The method further includes normalizing the first identity vector by using a normalization matrix, a first value being a sum of similarity degrees between the first identity vector in the corresponding category and other identity vectors in the corresponding category; training the normalization matrix, and outputting a training value of the normalization matrix when the normalization matrix maximizes a sum of first values of all the user categories.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: December 1, 2020
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Wei Li, Binghua Qian, Xingming Jin, Ke Li, Fuzhang Wu, Yongjian Wu, Feiyue Huang
  • Publication number: 20200356767
    Abstract: This application discloses a human attribute recognition method performed at a computing device. The method includes: determining a human body region image in a surveillance image; inputting the human body region image into a multi-attribute convolutional neural network model, to obtain, for each of a plurality of human attributes in the human body region image, a probability that the human attribute corresponds to a respective predefined attribute value, the multi-attribute convolutional neural network model being obtained by performing multi-attribute recognition and training on a set of pre-obtained training images by using a multi-attribute convolutional neural network; determining, for each of the plurality of human attributes in the human body region image, the attribute value of the human attribute based on the corresponding probability; and displaying the attribute values of the plurality of human attributes next to the human body region image.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Inventors: Siqian YANG, Jilin Li, Yongjian Wu, Yichao Yan, Keke He, Yanhano Ge, Feiyue Huang, Chengjie Wang
  • Publication number: 20200344825
    Abstract: A method, system and external instrument are provided. The method initiates a communication link between an external instrument (EI) and an implantable medical device (IMD), established a first connection interval for conveying data packets between the EI and IMD and monitors a connection criteria that includes at least one of a data throughput requirement. A battery indicator or link condition of the communications link is between the IMD and EI. The method further changes from the first connection interval to a second connection interval based on the connection criteria.
    Type: Application
    Filed: July 15, 2020
    Publication date: October 29, 2020
    Inventors: Yongjian Wu, Chao-Wen Young, Jun Yang, Xing Pei, Reza Shahandeh
  • Patent number: 10817708
    Abstract: A facial tracking method is provided. The method includes: obtaining, from a video stream, an image that currently needs to be processed as a current image frame; and obtaining coordinates of facial key points in a previous image frame and a confidence level corresponding to the previous image frame. The method also includes calculating coordinates of facial key points in the current image frame according to the coordinates of the facial key points in the previous image frame when the confidence level is higher than a preset threshold; and performing multi-face recognition on the current image frame according to the coordinates of the facial key points in the current image frame. The method also includes calculating a confidence level of the coordinates of the facial key points in the current image frame, and returning to process a next frame until recognition on all image frames is completed.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: October 27, 2020
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Chengjie Wang, Hui Ni, Yandan Zhao, Yabiao Wang, Shouhong Ding, Shaoxin Li, Ling Zhao, Jilin Li, Yongjian Wu, Feiyue Huang, Yicong Liang
  • Publication number: 20200330251
    Abstract: The invention discloses a connection release structure and a system, wherein the connection release structure is configured for connecting a release object and is arranged on a loading sheath tube, and comprises a connection fixing system and an unlocking sleeve system; the connection fixing system comprises a hook structure, the unlocking sleeve system comprises an unlocking sleeve, the connection fixing structure and the unlocking sleeve are movably connected with the loading sheath tube, the connection fixing structure is configured for being connected with the release object, and the unlocking sleeve is configured for locking the connection fixing structure and the release.
    Type: Application
    Filed: July 30, 2019
    Publication date: October 22, 2020
    Inventors: Kejin QIU, Yongjian WU, Xuancheng ZHAO, Pengfei LIU, Rencao CHANG, Xiaojian LIU, Yuxin ZHANG
  • Publication number: 20200334830
    Abstract: This present disclosure describes a video image processing method and apparatus, a computer-readable medium and an electronic device, relating to the field of image processing technologies. The method includes determining, by a device, a target-object region in a current frame in a video. The device includes a memory storing instructions and a processor in communication with the memory. The method also includes determining, by the device, a target-object tracking image in a next frame and corresponding to the target-object region; and sequentially performing, by the device, a plurality of sets of convolution processing on the target-object tracking image to determine a target-object region in the next frame. A quantity of convolutions of a first set of convolution processing in the plurality of sets of convolution processing is less than a quantity of convolutions of any other set of convolution processing.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 22, 2020
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Yabiao WANG, Yanhao GE, Zhenye GAN, Yuan HUANG, Changyou DENG, Yafeng ZHAO, Feiyue HUANG, Yongjian WU, Xiaoming HUANG, Xiaolong LIANG, Chengjie WANG, Jilin LI
  • Patent number: 10785720
    Abstract: A method for managing power during communication with an implantable medical device, including establishing a communications link, utilizing a power corresponding to a session start power, to initiate a current session between an implantable medical device (IMD) and external device. A telemetry break condition of the communications link is monitored during the current session. The power utilized by the IMD is adjusted between low and high power levels, during the current session based on the telemetry break condition. The number of sessions is counted, including the current session and one or more prior sessions, in which the IMD utilized the higher power level, and a level for the session start power to be utilized to initiate a next session following the current session is adaptively learned based on the counting of the number of sessions.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: September 22, 2020
    Assignee: Pacesetter, Inc.
    Inventors: Perry Li, Lequan Zhang, Xing Pei, Jeffery Crook, Yongjian Wu, Jun Yang, Chao-Wen Young