Patents by Inventor Xun Zhang

Xun 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).

  • RADIO-FREQUENCY SIGNAL GROUNDING DEVICE AND ANTENNA
    Publication number: 20200136246
    Abstract: A radio-frequency signal grounding device for an antenna comprises: a substrate layer; a grounding transmission line on a first side of the substrate layer; a metal layer on a second side of the substrate layer, the metal layer including at least one gap such that the metal layer is divided into at least a first sub-region and a second sub-region, where the gap is configured to block at least one of a low frequency signal and a direct current signal; a metal plate; and a dielectric layer that is disposed between the metal plate and the metal layer. The radio-frequency signal grounding device can achieve good radio-frequency signal grounding and low frequency/direct current signal blocking within a limited space via a multi-coupling design.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 30, 2020
    Inventors: Xun Zhang, Ligang Wu, Bo Wu, Xiaotuo Wang
  • LOW FREQUENCY AND DIRECT CURRENT SIGNAL BLOCKING DEVICE AND ANTENNA
    Publication number: 20200136222
    Abstract: A low frequency and direct current (DC) signal blocking device includes a dielectric substrate layer; a low frequency and DC signal blocking transmission line on a first surface of the substrate layer, where the low frequency and DC signal blocking transmission line has an input end and an output end; a metal layer on a second surface of the substrate layer, where there is at least one gap on the metal layer such that the metal layer is separated into at least a first sub-region and a second sub-region, where the gap is configured to block at least one of a low frequency signal and a DC signal; the substrate layer disposed between the low frequency and DC signal blocking transmission line and the metal layer; and a metal plate, wherein a dielectric layer is disposed between the metal plate and the metal layer.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 30, 2020
    Inventors: XUN ZHANG, Xiaotuo Wang, Bo Wu, Ligang Wu
  • METHOD AND DEVICE FOR DETECTING CONCENTRATION OF TOTAL HEMOGLOBIN IN BLOOD
    Publication number: 20200093409
    Abstract: Disclosed are a method and device for detecting the concentration of total hemoglobin in blood. A differential path factor corresponding to a subject is determined according to a physiological parameter of the subject and a predetermined table of a corresponding relation between the physiological parameter and the differential path factor.
    Type: Application
    Filed: June 12, 2019
    Publication date: March 26, 2020
    Inventors: Xun ZHANG, Guangfei LI
  • Power Supply Circuit and Audio Play Device
    Publication number: 20200076371
    Abstract: A power supply circuit comprises a power conversion circuit, a voltage selection circuit, and a voltage regulator. The voltage regulator coupled to the voltage selection circuit and a digital-to-analog converter (DAC), and the voltage regulator is configured to provide supply power to the DAC; the power conversion circuit is coupled to a first power supply and a power amplifier (PA), and the power conversion circuit is configured to convert, based on output power of the PA, a voltage of the first power supply into an output voltage that supply power to the PA; and the voltage selection circuit is coupled to a second power supply, the power conversion circuit and the voltage regulator, and the voltage selection circuit is configured to select the second power supply or the power conversion circuit to supply power to the voltage regulator based on an output voltage of the power conversion circuit.
    Type: Application
    Filed: March 9, 2017
    Publication date: March 5, 2020
    Inventor: Xun ZHANG
  • System running method and intelligent terminal
    Patent number: 10552263
    Abstract: A system running method applied to an intelligent terminal is provided. The intelligent terminal includes a first system and a second system. The second system can implement a call function and/or a short message service function, and a function that can be implemented by the first system includes a function that can be implemented by the second system. The method includes: starting the first system and the second system, where an operation screen of the first system is visible to a user; detecting a running status of the first system; and when it is detected that the first system is faulty, terminating running of the first system, and switching to an operation screen of the second system disclosure.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: February 4, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xun Zhang, Laifa Zhang, Yakun Wang
  • BLOOD PRESSURE MEASUREMENT METHOD, DEVICE AND STORAGE MEDIUM
    Publication number: 20200015688
    Abstract: A blood pressure measurement method, a blood pressure measurement device, and a storage medium are provided. The method includes: acquiring a video of a part of a human body, and generating a PPGi signal based on the video; extracting feature information from the PPGi signal; fitting blood pressure models based on the feature information, and acquiring blood pressure data corresponding to each heartbeat, wherein the blood pressure models include a systolic blood pressure linear model and a diastolic blood pressure exponential model.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 16, 2020
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangfei LI, Xun ZHANG, Hui DU
  • METHOD AND APPARATUS FOR PROCESSING ECG SIGNALS, AND ECG MACHINE
    Publication number: 20190365268
    Abstract: Provided is a method and an apparatus for processing ECG signals and an ECG machine, for improving a correct detection rate of R waves in the ECG signals recorded by a recorder.
    Type: Application
    Filed: May 16, 2019
    Publication date: December 5, 2019
    Inventors: Guangfei LI, Qi YANG, Xun ZHANG
  • Baseline wander correction using zero and one mismatch adaptation
    Patent number: 10483952
    Abstract: A method and an apparatus for correcting baseline wander is disclosed. The method and apparatus may include receiving a serial data stream that encodes a plurality of data symbols, and determining an average magnitude of a first data value included in one or more data symbols of a subset of the plurality of data symbols, and an average magnitude of a second value included in the one of more data symbols of the subset of the plurality of data symbols. A common mode operating point of an equalizer circuit may be adjusted using the average magnitude of the first data value and the average magnitude of the second data value.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: November 19, 2019
    Assignee: Oracle International Corporation
    Inventors: Jianghui Su, Xun Zhang, Muthukumar Vairavan, Rajesh Kumar, Dawei Huang
  • BASELINE WANDER CORRECTION USING ZERO AND ONE MISMATCH ADAPTATION
    Publication number: 20190341914
    Abstract: A method and an apparatus for correcting baseline wander is disclosed. The method and apparatus may include receiving a serial data stream that encodes a plurality of data symbols, and determining an average magnitude of a first data value included in one or more data symbols of a subset of the plurality of data symbols, and an average magnitude of a second value included in the one of more data symbols of the subset of the plurality of data symbols. A common mode operating point of an equalizer circuit may be adjusted using the average magnitude of the first data value and the average magnitude of the second data value.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 7, 2019
    Inventors: Jianghui Su, Xun Zhang, Muthukumar Vairavan, Rajesh Kumar, Dawei Huang
  • User plane data transmission method, mobility management entity, evolved NodeB, and system
    Patent number: 10470028
    Abstract: The present invention relates to a user plane data transmission method, a mobility management entity, an evolved NodeB, and a system, where the method includes: setting up a radio access bearer connection with a radio access network node; and performing user plane data transmission with the radio access network node by using a user plane protocol stack, where the user plane protocol stack includes a physical layer, a data link layer, and a network layer, where the network layer includes an IPv6 header and a flow label of the IPv6 header carries a user plane tunnel endpoint identifier TEID, or the network layer carries a type identifier of a GTP-U header.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: November 5, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wenzhuo Zhang, Xun Zhang, Xiudong Deng
  • ULTRASONIC CUTTER DETECTION METHOD AND DEVICE
    Publication number: 20190331645
    Abstract: An ultrasonic cutter detection method and device, the method comprises the following steps: preliminary detection: frequency amplitude detection and fall-of-potential detection, if the ultrasonic cutter fails the above two detection solutions in the preliminary detection, repeating the two detections; if the ultrasonic cutter still fails the above two detection solutions, the ultrasonic cutter is judged to be unqualified; and reinspection: free modal detection and pressure modal detection. Using differences of the ultrasonic cutters surface in micro-crack directions that result in different degrees of sensitivity of crack to different ultrasonic vibration modes, combined with the fall-of-potential method and frequency amplitude detection method, a detection rate and a detection velocity of an unqualified ultrasonic cutter can be improved.
    Type: Application
    Filed: July 3, 2017
    Publication date: October 31, 2019
    Inventors: Renke KANG, Zhigang DONG, Xianglong ZHU, Yidan WANG, Xun ZHANG, Ping ZHOU, Zhenyuan JIA
  • Embedded touch panel having high resistance film and display device
    Patent number: 10429685
    Abstract: An embedded touch panel (100) having a high resistance film (70) comprises a sequentially stacked first substrate (10), thin-film transistor substrate (20), liquid crystal layer (30), color filter (40), touch sensing layer (50), second substrate (60), and the high resistance film (70). A plurality of mutually insulated sensing wires are disposed on a surface of the thin-film transistor substrate (20) facing toward the liquid crystal layer (30). The thin-film transistor substrate (20) and the touch sensing layer (50) work together to embed a functionality of a touch panel into liquid crystal pixels, reducing a thickness of the touch panel (100). The high resistance film (70) is disposed on a surface of the second substrate (60) facing away from the touch sensing layer (50), and is electrically connected to the thin-film transistor substrate (20).
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: October 1, 2019
    Assignee: WGTECH (JIANGXI) CO., LTD.
    Inventors: Weihua Yi, Xun Zhang, Huirong Zhou, Bolun Zhang, Rong Yu
  • Identifying popular network video segments
    Patent number: 10397522
    Abstract: A method for identifying popular segments of a network video comprising: receiving video player operation information for a plurality of video players operated by users accessing the network video; evaluating a popularity measure for one or more segments of the network-video using the received operation information so as to identify popular segments of the network video.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: August 27, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yan Chen, Jian Hui He, Zhi Hua Pan, Zhong Su, Xiao Xun Zhang
  • Touch control display device having high resistance layer
    Patent number: 10365508
    Abstract: A touch control display device having a high resistance layer and a preparation method thereof, the touch control display device (100) having a high resistance layer comprising, stacked sequentially, a thin film transistor substrate (10), a touch control sensing layer (40), a liquid crystal layer (20), a color optical filter substrate (30) and a high resistance layer (50). The material of the high resistance layer (50) is a mixture of graphite oxide and tin oxide.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: July 30, 2019
    Assignee: WGTECH (JIANGXI) CO., LTD.
    Inventors: Weihua Yi, Xun Zhang, Huirong Zhou, Bolun Zhang, Junwen Kuang
  • LINK ADJUSTMENT METHOD, SERVER, AND STORAGE MEDIUM
    Publication number: 20190230225
    Abstract: A method and apparatus are provided. The method includes obtaining call information of first users currently in network calls in a network call system. Direct link quality and relay link quality corresponding to each first user are obtained according to the call information. Call link are configured for plural second users, where the plural second users are users whose relay link quality is higher than the corresponding direct link quality among the first users.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LTD
    Inventors: Zheng XUE, Yu ZHOU, Jing LV, Xun ZHANG, Yanbai ZHAO, Baojian WANG
  • SYSTEMS, METHODS, AND DEVICES FOR CREATING A SPLINE-BASED VIDEO ANIMATION SEQUENCE
    Publication number: 20190156546
    Abstract: A spline-based animation process creates an animation sequence. The process receives a plurality of frames that illustrate a figure based on a design template (e.g., which includes a skeleton having segments). The process further identifies a spine segment, generates hip, shoulder, and head segments at respective positions relative to the spine segment, identifies limb and facial feature segments, and converts the segments into respective splines bound between endpoints. The process further determines changes between frames for respective splines and animates movement of the figure over a sequence of frames based on the changes.
    Type: Application
    Filed: November 17, 2017
    Publication date: May 23, 2019
    Inventors: Xun Zhang, David Scott Lee Swenson
  • Solar thermal energy—field electron emission power generation device
    Patent number: 10153723
    Abstract: The present invention relates to a solar thermal energy-field electron emission power generation device, which is formed by a solar cooker and a heat-field electron emission power generation body. Based on the metal heat-field electron emission experiment, magnetic focusing and magnetic insulation are adopted to form the power generation device, which has characteristics of environmental protection, low cost and high efficiency. Therefore, the power generation device of the present invention can be widely applied to companies and individuals without common electric circuits, such as graze, sentry post, forest protection, cultivation of high seas, and marine power.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: December 11, 2018
    Inventors: Xun Zhang, Guoji Zhang
  • Baud-rate clock data recovery with improved tracking performance
    Patent number: 10142089
    Abstract: Embodiments include systems and methods for improving link performance and tracking capability of a baud-rate clock data recovery (CDR) system using transition pattern detection. For example, a multi-level signal is received via a data channel and converted to a pseudo-NRZ signal. CDR early/late voting can be derived from the converted (baud-rate) pseudo-NRZ signal and from error signals from the received PAM4 signal, and the voting can be implemented with different phase error detector (PED) functional approaches. Different approaches can yield different CDR performance characteristics and can tend to favor different PAM4 transition patterns. Embodiments can identify jittery patterns for a particular CDR implementation and can add features to the CDR to filter out those patterns from being used for CDR early/late voting.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 27, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Yuhan Yao, Xun Zhang, Dawei Huang, Jianghui Su, Muthukumar Vairavan, Chaitanya Palusa
  • Multi-rate finite impulse response filter
    Patent number: 10142134
    Abstract: Embodiments include systems and methods for implementing a multi-rate FIR by using rate-dependent bit stuffing on the cursor, while using rate-independent (e.g., full-rate) spacing on the pre- and post-cursor. For example, in the FIR data path, the cursor bit output is generated using bit stuffing, depending on a selected rate mode (e.g., full-rate, half-rate, quarter-rate, eighth-rate, etc.), but the spacing of the pre-cursor, cursor, and post-cursor are maintained at 1 UI apart (i.e., the full-rate spacing) for all rate modes. Such an approach can appreciably reduce complexity of the logic and can appreciably relieve the critical timing path.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: November 27, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Jiangyuan Li, Xun Zhang, Jianghui Su
  • EMBEDDED TOUCH PANEL HAVING HIGH RESISTANCE FILM AND DISPLAY DEVICE
    Publication number: 20180314095
    Abstract: An embedded touch panel (100) having a high resistance film (70) comprises a sequentially stacked first substrate (10), thin-film transistor substrate (20), liquid crystal layer (30), color filter (40), touch sensing layer (50), second substrate (60), and the high resistance film (70). A plurality of mutually insulated sensing wires are disposed on a surface of the thin-film transistor substrate (20) facing toward the liquid crystal layer (30). The thin-film transistor substrate (20) and the touch sensing layer (50) work together to embed a functionality of a touch panel into liquid crystal pixels, reducing a thickness of the touch panel (100). The high resistance film (70) is disposed on a surface of the second substrate (60) facing away from the touch sensing layer (50), and is electrically connected to the thin-film transistor substrate (20).
    Type: Application
    Filed: October 25, 2016
    Publication date: November 1, 2018
    Applicants: WGTECH (JIANGXI) CO., LTD., WGTECH (JIANGXI) CO., LTD.
    Inventors: Weihua YI, Xun ZHANG, Huirong ZHOU, Bolun ZHANG, Rong YU