Patents by Inventor Xi Zhang

Xi Zhang 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).

  • REFERENCE SIGNAL CONFIGURATION METHOD, BASE STATION, USER EQUIPMENT, AND SYSTEM
    Publication number: 20190319760
    Abstract: An embodiment of the present invention provides a reference signal configuration method. The method includes: obtaining, by the base station, a first time-domain location of a reference signal of a first cell, and mapping the reference signal of the first cell to one or more resource elements based on the first time-domain location, where there is an offset between the first time-domain location and a second time-domain location of a reference signal of a second cell, the first cell is a cell in which the base station is located, and a service area of the second cell is different from that of the first cell; and sending, by the base station, the reference signal of the first cell. According to the embodiment, mutual interference of reference signal transmission in cells can be avoided, and signal transmission efficiency and signal transmission quality can be improved.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Inventors: Xiaoyong TANG, Xi ZHANG
  • Distinguishable geographic area presentation
    Patent number: 10444954
    Abstract: A method and apparatus for rendering geographic areas involves presenting at least part of the geographic area in a distinctive fashion. An area of interest is identified. A location of the area of interest as a geographic sub-area within a geographic area is determined. A representation of the area of interest within an electronic model of the geographic area is located. A view of the electronic model of the geographic area comprising the representation of the area of interest is selected, and the view of the electronic model with the area of interest having a different display characteristic than other geographic sub-areas shown in the view is presented. The different display characteristic distinguishes the area of interest from the other geographic sub-areas.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: October 15, 2019
    Assignee: HERE Global B.V.
    Inventors: Xi Zhang, Xin Chen
  • Community Question Answering-Based Article Recommendation Method, System, and User Device
    Publication number: 20190303768
    Abstract: A community question answering-based article recommendation system, user device, and method includes obtaining text information of a question for a target article; constructing 2-tuple information using the text information of the question and modal content information of each of a plurality of preset articles in a preset article set; inputting each piece of 2-tuple information into a preset matching model; calculating, with reference to a preset matching model parameter, a score of matching between each preset article and the question; and outputting an article recommendation list for the question for the target article based on the scores of matching between the plurality of preset articles and the question for the target article.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 3, 2019
    Inventors: Xi Zhang, Lin Ma, Xin Jiang, Hang Li
  • REFERENCE SIGNAL TRANSMISSION METHOD AND TRANSMISSION APPARATUS
    Publication number: 20190296946
    Abstract: This application provides a reference signal transmission method and transmission apparatus. The transmission method includes: determining, by a network device, a resource block offset of a frequency domain position of a phase tracking reference signal (PTRS) of a terminal device based on PTRS information of the terminal device, an identifier of the terminal device, and first bandwidth, where the PTRS information includes a frequency domain density or a frequency domain interval of the PTRS, and the first bandwidth is bandwidth scheduled by the network device for the terminal device; and performing, by the network device, transmission of the PTRS with the terminal device based on the resource block offset of the frequency domain position of the PTRS. The reference signal transmission method provided in embodiments of this application is helpful in randomizing PTRS interference.
    Type: Application
    Filed: June 14, 2019
    Publication date: September 26, 2019
    Inventors: Xi ZHANG, Minghui XU
  • Photographing Method and Apparatus
    Publication number: 20190289187
    Abstract: A photographing method includes entering a slow shutter photographing mode, dividing each frame of image of the photographed object into a light trail region, a background light source region, and a non-light-source region, merging the light trail regions of the frames of images, setting a merged light trail region as a light trail region of a target image, setting the background light source regions of one or more of the frames of images as a background light source region of the target image to avoid overexposure, merging the non-light-source regions of one or more of the frames of images, setting a merged non-light-source region as a non-light-source region of the target image to enhance brightness of the non-light-source region, and storing the target image after obtaining a photographing instruction.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: Yun Zhao, Yining Huang, Xi Zhang
  • Phase tracking reference signal sending method and apparatus
    Patent number: 10419099
    Abstract: This application provides a phase tracking reference signal (PTRS) sending method and apparatus. The method includes: implicitly determining, by a terminal device based on obtained uplink grant information and a preset rule, a to-be-sent PTRS and an antenna port for carrying the to-be-sent PTRS, where the antenna port is selected from an antenna port set, and the to-be-sent PTRS is one or more of all available PTRSs; and putting the to-be-sent PTRS on the antenna port, and sending the to-be-sent PTRS on the antenna port. This implicit indication method can effectively reduce air interface signaling overheads and improve air interface efficiency.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 17, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Haibao Ren, Yi Qin, Xi Zhang
  • Laser Machining Systems and Methods
    Publication number: 20190275609
    Abstract: A laser machining method includes directing, from an F-theta lens having a long focal length of greater than about 250 millimeters, a laser beam at a non-perpendicular beam tilt angle from an optical axis of the lens having a top-hat profile and a narrow beam divergence angle of between about 1 degree and about 3 degrees towards a workpiece on a stage movable in at least an X-direction and a Y-direction, engaging the directed laser beam with the workpiece disposed in the usable field of view, moving the workpiece and the directed laser beam relative to each other, and removing portions of the workpiece with the directed laser beam to define a machined surface.
    Type: Application
    Filed: May 30, 2019
    Publication date: September 12, 2019
    Inventors: Hongqiang Chen, Steven Robert Hayashi, Xi Zhang
  • Heating system
    Patent number: 10398493
    Abstract: A heating system includes a power supply module, a regulatory module, electrically connected to the power supply module, for modulating the power supply module, and a heating module. The heating module includes a positioning device and a conductive device. The heating module is electrically connected to the power supply module and the regulatory module, and the conductive device is tightly wound around the positioning device.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: September 3, 2019
    Assignee: National Cheng Kung University
    Inventors: Sheng-Jye Hwang, Huy-Tien Bui, Yu-Hsien Lin, Yi-San Chang, Huei-Huang Lee, Durn-Yuan Huang, Xi-Zhang Lin
  • COMMUNICATION METHOD AND COMMUNICATIONS APPARATUS
    Publication number: 20190268787
    Abstract: Embodiments of this application relate to the field of communications technologies, and disclose a communication method and a communications apparatus. The communication method may include: generating beam configuration information, where the beam configuration information includes beam indication information and beam monitoring information; and then sending the beam configuration information to a terminal. Technical solutions provided in this application may be applied to a scenario in which a terminal monitors a receive beam based on beam configuration information, to receive downlink information sent by a base station, or a scenario in which a terminal sends uplink information through a transmit beam based on the beam configuration information.
    Type: Application
    Filed: April 9, 2019
    Publication date: August 29, 2019
    Inventors: Peng GUAN, Xi ZHANG, Huang HUANG
  • Method for Transmitting Downlink Control Signal and Apparatus
    Publication number: 20190261296
    Abstract: Embodiments provide a method for transmitting a downlink control signal, and an apparatus. The method includes: sending, by a base station, one or more radio frames, where the one or more radio frames include a plurality of OFDM symbols that carry synchronization signals, each OFDM symbol that carries a synchronization signal is sent by using one or more downlink beams of the base station, and the OFDM symbol that carries the synchronization signal further carries a downlink control signal. The downlink control signal is placed in the OFDM symbol that carries the synchronization signal.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Inventors: Sainan Li, Huang Huang, Xi Zhang
  • UNMANNED AERIAL VEHICLE INCLUDING AN OMNIDIRECTIONAL DEPTH SENSING AND OBSTACLE AVOIDANCE AERIAL SYSTEM AND METHOD OF OPERATING SAME
    Publication number: 20190243388
    Abstract: An unmanned aerial vehicle is described herein. The unmanned aerial vehicle includes a fuselage body, a lift mechanism coupled to the fuselage body, and a depth sensing and obstacle avoidance system coupled to the fuselage body. The depth sensing and obstacle avoidance system includes a platform assembly, a pair of stereovision cameras coupled to a platform assembly, and a motor assembly coupled to the fuselage body and to the platform assembly. The platform assembly includes a support member extending between a first end and an opposite second end along a longitudinal axis. The pair of stereovision cameras includes each stereovision camera positioned at an opposite end of the support member. The motor assembly is configured to rotate the platform assembly with respect to the fuselage body about a rotational axis perpendicular to the longitudinal axis of the platform assembly.
    Type: Application
    Filed: February 1, 2019
    Publication date: August 8, 2019
    Inventors: Tong Zhang, Lei Zhang, Zhaozhe Wang, Xi Zhang, Mengwen Tan
  • Cathode assembly for use in X-ray generation
    Patent number: 10373792
    Abstract: A cathode assembly design is provided that includes two flat emitters, a longer emitter filament and a shorter emitter filament. In one implementation the focal spot sizes produced by the long and short emitters overlap over a range. Thus, one emitter filament may be suitable for generating small and concentrated focal spot sizes while the other emitter filament is suitable for generating small and large focal spots sizes.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: August 6, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: John Scott Price, Xi Zhang
  • BEAM RECOVERY METHOD AND APPARATUS
    Publication number: 20190229777
    Abstract: Embodiments of the present disclosure disclose a beam recovery method and apparatus. The method includes: sending, by a terminal device, a beam recovery request to a network device in a first time window using at least one beam, where the beam recovery request is a scheduling request or a beam failure recovery request; and receiving, by the terminal device in the first time window using the at least one beam, a beam recovery request response sent by the network device, where the beam recovery request response is a scheduling request response or a beam failure recovery request response.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 25, 2019
    Inventors: Peng GUAN, Xi ZHANG, Ying SUN
  • Laser machining systems and methods
    Patent number: 10357848
    Abstract: A laser machining method includes directing, from an F-theta lens having a long focal length of greater than about 250 millimeters, a laser beam at a non-perpendicular beam tilt angle from an optical axis of the lens having a top-hat profile and a narrow beam divergence angle of between about 1 degree and about 3 degrees towards a workpiece on a stage movable in at least an X-direction and a Y-direction, engaging the directed laser beam with the workpiece disposed in the usable field of view, moving the workpiece and the directed laser beam relative to each other, and removing portions of the workpiece with the directed laser beam to define a machined surface.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: July 23, 2019
    Assignee: General Electric Company
    Inventors: Hongqiang Chen, Steven Robert Hayashi, Xi Zhang
  • Enhanced patterning of integrated circuit layer by tilted ion implantation
    Patent number: 10347501
    Abstract: Methods for achieving sub-lithographic feature sizes in an integrated circuit (IC) layer are provided that use ion implantation to enhance or reduce the etch rate of a thin masking layer. The etch rates also can be enhanced or reduced at specific locations through multiple implantation steps. The implantation can be performed at tilted angles to achieve sub-lithographic implanted regions that are self-aligned to pre-existing photoresist or hard-mask features over the masking layer on the surface of a substrate. A higher density of features can be achieved in an IC layer than are present in an overlying masking layer with the use of ion implantation.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: July 9, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Tsu-Jae Liu, Xi Zhang, Peng Zheng
  • RADIATION EMISSION DEVICE
    Publication number: 20190206653
    Abstract: A radiation emission device is provided. The radiation emission device may include an anode, a first cathode, a heating device and an enclosure. The first cathode may include a first filament that emit an electron beam striking the anode to generate radioactive rays for imaging. The heating device may be located outside of the first cathode and be configured to warm up the anode. The enclosure may be configured to enclosure the first cathode and the anode.
    Type: Application
    Filed: December 29, 2018
    Publication date: July 4, 2019
    Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Yun ZOU, Xi ZHANG, Dun LI, Yanfeng DU, Haining SUN
  • Photographing method and apparatus
    Patent number: 10326946
    Abstract: A photographing method includes entering the slow shutter photographing mode, dividing each frame of image of the photographed object into a light trail region, a background light source region, and a non-light-source region, merging the light trail regions of the frames of images, setting a merged light trail region as a light trail region of a target image, setting the background light source regions of one or more of the frames of images as a background light source region of the target image to avoid overexposure, merging the non-light-source regions of one or more of the frames of images, setting a merged non-light-source region as a non-light-source region of the target image to enhance brightness of the non-light-source region, and storing the target image after obtaining a photographing instruction.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: June 18, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yun Zhao, Yining Huang, Xi Zhang
  • TRANSMIT POWER DETERMINING METHOD, PROCESSING CHIP, AND COMMUNICATIONS DEVICE
    Publication number: 20190182777
    Abstract: A communication method is provided, including: determining, by a first device, a relative power ratio between a phase tracking reference signal (PTRS) and a data channel; determining, by the first device, a transmit power of the PTRS based on the relative power ratio of the PTRS to the data channel; and sending, by the first device, the PTRS to a second device by using the transmit power of the PTRS.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 13, 2019
    Inventors: Xi ZHANG, Peng GUAN, Xiaoyong TANG
  • PHASE TRACKING REFERENCE SIGNAL SENDING METHOD AND APPARATUS
    Publication number: 20190158171
    Abstract: This application provides a phase tracking reference signal (PTRS) sending method and apparatus. The method includes: implicitly determining, by a terminal device based on obtained uplink grant information and a preset rule, a to-be-sent PTRS and an antenna port for carrying the to-be-sent PTRS, where the antenna port is selected from an antenna port set, and the to-be-sent PTRS is one or more of all available PTRSs; and putting the to-be-sent PTRS on the antenna port, and sending the to-be-sent PTRS on the antenna port. This implicit indication method can effectively reduce air interface signaling overheads and improve air interface efficiency.
    Type: Application
    Filed: September 27, 2018
    Publication date: May 23, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Haibao Ren, Yi Qin, Xi Zhang
  • AUGMENTED REALITY PRODUCT PREVIEW
    Publication number: 20190156585
    Abstract: Systems and methods for displaying 3D containers in a computer generated environment are described. A computing device may provide a user with a catalog of objects which may be purchased. In order to view what an object may look like prior to purchasing the object, a computing device may show a 3D container that has the same dimensions as the object. As discussed herein, the 3D container may be located and oriented based on a two-dimensional marker. Moreover, some 3D containers may contain a representation of an object, which may be a 2D image of the object.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventors: David Creighton Mott, Arnab Sanat Kumar Dhua, Colin Jon Taylor, Yu Lou, Chun-Kai Wang, Sudeshna Pantham, Himanshu Arora, Xi Zhang