Patents by Inventor Xiaojun Tang

Xiaojun Tang 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: 20190253217
    Abstract: This application provides a reference signal configuration method and apparatus. The method includes: determining configuration information of a reference signal based on a first parameter, where the first parameter includes at least one of a transmission feature, a subcarrier spacing, an operating band of the subcarrier spacing, system bandwidth, a quantity of aggregated time-domain resource units, and a quantity of symbols that are in aggregated time-domain resources and to which the reference signal is mapped; and generating the reference signal based on the configuration information. According to the reference signal configuration method and apparatus in this application, a new reference signal design can be proposed for a communications system, so as to meet a configuration requirement of the communications system.
    Type: Application
    Filed: April 24, 2019
    Publication date: August 15, 2019
    Inventors: Ming WU, Zhengwei GONG, Hao TANG, Xiaojun MA
  • Publication number: 20190251676
    Abstract: The present disclosure provides an image correction method and device. The method includes: correcting a target face image; obtaining first eye position information and second eye position information through calculation according to the face image; obtaining a first image correction parameter and a second image correction parameter via calculation based on the first eye position information and the second eye position information; and correcting a first image according to the first image correction parameter and correcting a second image according to the second image correction parameter.
    Type: Application
    Filed: November 27, 2018
    Publication date: August 15, 2019
    Inventors: Xiangyang Liu, Xitong Ma, Naifu Wu, Xiaojun Tang
  • Publication number: 20190182556
    Abstract: Aspects of the subject disclosure may include, for example, a machine-readable storage medium, including executable instructions that, when executed by a processing system including a processor, facilitate performance of operations that include assuming control of a video content transfer between a video server and a video client for HTTP traffic responsive to determining the HTTP traffic is for video content, generating a video transfer rate selection and a video transfer resolution selection for a requested video chunk of a time slot of the video content, generating an optimized manifest file for the requested video chunk, and publishing the optimized manifest file to the video client, wherein the video client request the requested video chunk from the video server based on the optimized manifest. Other embodiments are disclosed.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 13, 2019
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Zhengye Liu, Xidong Wu, Jin Wang, Xiaojun Tang, Mark Brady
  • Patent number: 10311295
    Abstract: A heuristic finger detection method based on a depth image is disclosed. The method includes the steps of: acquiring a hand connected region from a user's depth image; calculating the central point of the hand connected region; calculating a plurality of extremely far points in the hand connected region that have extremum 3D geodesic distances from the central point; detecting fingertips and finger regions from the plurality of calculated extremely far points; and outputting fingertip positions and the finger regions. The method calculates and detects fingertips of users by means of 3D geodesic distance, without extracting boundary contours of hand regions, which improves robustness of gesture detection and reduces detection error rates. The method has the advantages of higher finger detection accuracy and fast computing speed.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: June 4, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaojun Tang, Jibo Zhao
  • Patent number: 10261164
    Abstract: The present disclosure provides a positioning device and an activity data acquisition device. The positioning device includes: a receiving module configured to receive coarse-positioning location information of each determined person and actual location information of an unknown person to be identified on an activity field; a calculating module configured to calculate a first distance between a position indicated by the actual location information of the person to be identified and a position indicated by the coarse-positioning location information of each determined person; a determining module configured to determine the identity of the person to be identified as the determined person corresponding to the smallest first distance, and use the actual location information as accurate-positioning location information of the determined person.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: April 16, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xiaojun Tang
  • Publication number: 20190065891
    Abstract: Embodiments of the present disclosure disclose an image detection method including: establishing a data model based on mark point information of a group of first strip-like line segments, the mark point information of each first strip-like line segment including the length, the width, the direction and the coordinate of the center point of the first strip-like line segment, establishing a priori model based on the distribution and the number of a group of second strip-like line segments which constitute a target structure, establishing a probability density function for the data model and the priori model, and performing sampling and solution optimization to obtain a globally optimal solution, and detecting the image taking the globally optimal solution as a target model. The embodiments of the present disclosure also disclose an image detection system and a non-volatile computer readable medium.
    Type: Application
    Filed: March 30, 2018
    Publication date: February 28, 2019
    Inventors: Jinglin YANG, Xiaojun TANG
  • Publication number: 20190064311
    Abstract: The present disclosure provides a positioning device and an activity data acquisition device. The positioning device includes: a receiving module configured to receive coarse-positioning location information of each determined person and actual location information of an unknown person to be identified on an activity field; a calculating module configured to calculate a first distance between a position indicated by the actual location information of the person to be identified and a position indicated by the coarse-positioning location information of each determined person; a determining module configured to determine the identity of the person to be identified as the determined person corresponding to the smallest first distance, and use the actual location information as accurate-positioning location information of the determined person.
    Type: Application
    Filed: March 20, 2018
    Publication date: February 28, 2019
    Inventor: Xiaojun TANG
  • Publication number: 20190066334
    Abstract: Described herein are a method, apparatus, terminal, and system for measuring a trajectory tracking accuracy of a target. Using each method, apparatus, terminal, and system to measure the trajectory tracking accuracy of the target includes determining a location information of the actual tracking trajectory of the target; comparing the location information of the actual tracking trajectory with a location information of the target trajectory to determine a variance between the location information of the actual tracking trajectory and the location information of the target trajectory; and determining the tracking accuracy of the target based on the variance.
    Type: Application
    Filed: April 30, 2018
    Publication date: February 28, 2019
    Inventors: Yu GU, Xiaojun TANG
  • Publication number: 20190043199
    Abstract: An image segmentation method, an image segmentation system, a storage medium and an apparatus including the image segmentation system or the storage medium are provided. The image segmentation method includes: obtaining a connected region where a target object is located from a depth image; determining a principal direction or a secondary direction of the connected region by a principal component analysis method; and acquiring an image of the target object from the connected region according to relationship between morphology of the target object and the principal direction or the secondary direction.
    Type: Application
    Filed: July 6, 2017
    Publication date: February 7, 2019
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Jibo Zhao, Xiaojun Tang
  • Publication number: 20180324781
    Abstract: Cluster-based optimization of antenna tilts in a wireless network and other related aspects are presented herein. A screening component can receive information indicating wireless conditions of respective wireless access points of a geographical region, select, based on a performance criterion, an access point of the respective wireless access points, and group the access point and an other access point of the respective wireless access points into a representation of a cluster of access points. Further, an optimization component can derive antenna tilt values for respective access points of the cluster of the access points in response to a simulation of an application of the antenna tilt values to the respective access points. Furthermore, an implementation component can direct the antenna tilt values to respective components of the respective access points.
    Type: Application
    Filed: June 26, 2018
    Publication date: November 8, 2018
    Inventors: Hyun Ok Lee, Vibhav Arun Kapnadak, Fereidoun Tafreshi, Xiaojun Tang, Ernest Tinyork Tsui, Gustavo Enrique Ulffe Whu
  • Publication number: 20180288773
    Abstract: Aspects of the subject disclosure may include, for example, a system that provides for obtaining, by a server comprising a processor, network parameter data from an eNodeB of a wireless network. The server can determine a predicted bandwidth for a group of end user devices in a coverage area of the eNodeB according to the network parameter data. The server can receive, from an end user device of the group of end user devices, a request for the predicted bandwidth. The server can provide the predicted bandwidth to the end user device. The providing of the predicted bandwidth enables the end user device to provide a video chunk request to a content server that is based on a selected chunk delivery schedule and facilitates streaming of video content to the end user device from the content server. Other embodiments are disclosed.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 4, 2018
    Inventors: Zhengye Liu, ZUXIAN GUO, DHRUV GUPTA, XIAOJUN TANG, JIN WANG, WEIHUA YE, YONGDONG ZHAO
  • Publication number: 20180239957
    Abstract: A heuristic finger detection method based on a depth image is disclosed. The method includes the steps of: acquiring a hand connected region from a user's depth image; calculating the central point of the hand connected region; calculating a plurality of extremely far points in the hand connected region that have extremum 3D geodesic distances from the central point; detecting fingertips and finger regions from the plurality of calculated extremely far points; and outputting fingertip positions and the finger regions. The method calculates and detects fingertips of users by means of 3D geodesic distance, without extracting boundary contours of hand regions, which improves robustness of gesture detection and reduces detection error rates. The method has the advantages of higher finger detection accuracy and fast computing speed.
    Type: Application
    Filed: March 17, 2017
    Publication date: August 23, 2018
    Inventors: Xiaojun TANG, Jibo ZHAO
  • Patent number: 10034291
    Abstract: Cluster-based optimization of antenna tilts in a wireless network and other related aspects are presented herein. A screening component can receive information indicating wireless conditions of respective wireless access points of a geographical region, select, based on a performance criterion, an access point of the respective wireless access points, and group the access point and an other access point of the respective wireless access points into a representation of a cluster of access points. Further, an optimization component can derive antenna tilt values for respective access points of the cluster of the access points in response to a simulation of an application of the antenna tilt values to the respective access points. Furthermore, an implementation component can direct the antenna tilt values to respective components of the respective access points.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: July 24, 2018
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLC
    Inventors: Hyun Ok Lee, Vibhav Arun Kapnadak, Fereidoun Tafreshi, Xiaojun Tang, Ernest Tinyork Tsui, Gustavo Enrique Ulffe Whu
  • Patent number: 9790502
    Abstract: This invention is directed to a RNA interference (RNAi) agent and the use of that RNAi agent to treat hepatitis B infection in individuals, as well as pharmaceutical compositions containing the RNAi agents of the invention. The RNAi agents, or constructs for expressing them are utilized to inhibit expression of at least one Hepatitis B virus (HBV) gene, where the agent comprises an effector sequence complementary to or substantially complementary to a predicted sequence transcribed from a target region. In some forms of the invention, the agent has more than one effector sequence. Multiple effectors may target the same region of an HBV gene, different (possibly overlapping) regions of the same gene and/or different HBV genes.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 17, 2017
    Assignee: BENITEC BIOPHARMA LIMITED
    Inventors: Michael Wayne Graham, Peter French, York YuanYuan Zhu, YiXiang Lu, TieJun Li, YunCheng Sun, XiaoJun Tang, Li Shan
  • Publication number: 20170002356
    Abstract: This invention is directed to a RNA interference (RNAi) agent and the use of that RNAi agent to treat hepatitis B infection in individuals, as well as pharmaceutical compositions containing the RNAi agents of the invention. The RNAi agents, or constructs for expressing them are utilised to inhibit expression of at least one Hepatitis B virus (HBV) gene, where the agent comprises an effector sequence complementary to or substantially complementary to a predicted sequence transcribed from a target region. In some forms of the invention, the agent has more than one effector sequence. Multiple effectors may target the same region of an HBV gene, different (possibly overlapping) regions of the same gene and/or different HBV genes.
    Type: Application
    Filed: July 11, 2016
    Publication date: January 5, 2017
    Inventors: Michael Wayne Graham, Peter French, York YuanYuan Zhu, YiXiang Lu, TieJun Li, YunCheng Sun, XiaoJun Tang, Li Shan
  • Patent number: 9532252
    Abstract: Techniques for monitoring and diagnosing states of wireless network elements having a known impact on uplink interference are presented. In an aspect, a method includes receiving, by a system including a processor, diagnostic data for a cellular network including strength data representative of strengths of radio frequency signals, prior to demodulation, respectively received at a plurality of antennas of a base station of the cellular network over a defined duration of time and at a defined sampling rate. The method further includes, based on analyzing the strength data by the system, determining by the system, a state of a network element of the cellular network.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 27, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Srikanth Hariharan, Ernest Tsui, Christopher M. Riley, Bo Ji, Xiaojun Tang
  • Patent number: 9410154
    Abstract: RNA interference (RNAi) agents and the use of the RNAi agents for treating hepatitis B infection in individuals, as well as pharmaceutical compositions containing the RNAi agents are provided. The RNAi agents, or constructs for expressing them are utilized to inhibit expression of at least one Hepatitis B virus (HBV) gene, wherein each agent comprises an effector sequence complementary to or substantially complementary to a predicted sequence transcribed from a target region. In some embodiments of the present invention, the agents have more than one effector sequence; wherein the multiple effectors may target the same region of an HBV gene, different (possibly overlapping) regions of the same gene and/or different HBV genes.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: August 9, 2016
    Assignee: BENITEC BIOPHARMA LIMITED
    Inventors: Michael Wayne Graham, Peter French, York YuanYuan Zhu, YiXiang Lu, TieJun Li, YunCheng Sun, XiaoJun Tang, Li Shan
  • Publication number: 20160157220
    Abstract: Cluster-based optimization of antenna tilts in a wireless network and other related aspects are presented herein. A screening component can receive information indicating wireless conditions of respective wireless access points of a geographical region, select, based on a performance criterion, an access point of the respective wireless access points, and group the access point and an other access point of the respective wireless access points into a representation of a cluster of access points. Further, an optimization component can derive antenna tilt values for respective access points of the cluster of the access points in response to a simulation of an application of the antenna tilt values to the respective access points. Furthermore, an implementation component can direct the antenna tilt values to respective components of the respective access points.
    Type: Application
    Filed: February 9, 2016
    Publication date: June 2, 2016
    Inventors: Hyun Ok Lee, Vibhav Arun Kapnadak, Fereidoun Tafreshi, Xiaojun Tang, Ernest Tinyork Tsui, Gustavo Enrique Ulffe Whu
  • Patent number: 9288807
    Abstract: Cluster-based optimization of antenna tilts in a wireless network and other related aspects are presented herein. A screening component can receive information indicating wireless conditions of respective wireless access points of a geographical region, select, based on a performance criterion, an access point of the respective wireless access points, and group the access point and an other access point of the respective wireless access points into a representation of a cluster of access points. Further, an optimization component can derive antenna tilt values for respective access points of the cluster of the access points in response to a simulation of an application of the antenna tilt values to the respective access points. Furthermore, an implementation component can direct the antenna tilt values to respective components of the respective access points.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: March 15, 2016
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLC
    Inventors: Hyun Ok Lee, Vibhav Arun Kapnadak, Fereidoun Tafreshi, Xiaojun Tang, Ernest Tinyork Tsui, Gustavo Enrique Ulffe Whu
  • Publication number: 20160034432
    Abstract: An accessible processing method of webpage contents and accessible webpage device are provided. The foregoing accessible processing method may include the follows. A document outline list tag is added to a webpage. After the document outline list tag obtains a focus, the following is further included. All title tags of a specified level in current webpage may be traversed. An anchor point may be added to each title tag of the specified level. Text information of each title tag of the specified level may be respectively copied to a corresponding link newly established. The link newly established may be enabled to point to an anchor point of a corresponding title label. Each link newly established may be taken as a list item. The list item may be added to the document outline list tag.
    Type: Application
    Filed: October 14, 2015
    Publication date: February 4, 2016
    Inventors: He Wen, Liyong Li, Xu Zhang, Wei Guo, Yang Li, Weijian Jin, Xiaojun Tang