Patents by Inventor Xu Zhou

Xu Zhou 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: 11234323
    Abstract: Systems and methods for medical imaging. The method may include acquiring a tube voltage switching waveform for a radiation source of a medical device. The method may include determining a tube current switching period based on the tube voltage switching waveform. The method may include determining a sampling period correlated with the tube current switching period. The method may include acquiring projection data according to the sampling period. The method may further include reconstructing an image based on the acquired projection data.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: January 25, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Guoping Zhu, Patrick Joseph Kling, Jiawen Zhou, Tieshan Zhang, Jinglin Wu, Xu Chu
  • Publication number: 20220019282
    Abstract: A method for controlling a display screen according to an eye focus and a head-mounted electronic device are provided. The method is applicable to the head-mounted electronic device, the head-mounted electronic device includes a display screen, and the display screen is transparent when display is turned off. Furthermore, the method can include displaying an image on the display screen, an eye focus of a user being within a first distance range. The method can further include turning off the display screen, when it is detected that a duration in which the eye focus of the user is not within the first distance range is greater than or equal to a first duration. The method can lower power consumption, and reduce impact of an image on watching a real world.
    Type: Application
    Filed: November 15, 2019
    Publication date: January 20, 2022
    Inventors: Guoming ZHOU, Jian CHEN, Xu ZANG
  • Patent number: 11224872
    Abstract: A pipette based on surface charges includes a pipette body. A plurality of support rods are provided below the pipette body. Connecting rods are provided at the lower ends of two adjacent support rods. A substrate is provided between the connecting rods. A porous SiO2 coating is provided on the substrate. A hydrophobic molecule layer is provided on the surface coating by the vapor deposition method. A superamphiphobic surface is formed on the substrate by the surface coating and the hydrophobic molecule layer. The substrate and the surface coating are made of dielectric materials. A circular limit plate is provided above the pipette body. The pipette body, the support rods, the connecting rods and the limit plate are integrally formed, and are electrically non-conductive. An electrically conductive sliding rod is movably provided within the pipette body and the limit plate.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: January 18, 2022
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Xu Deng, Qiangqiang Sun, Yu Zhou
  • Patent number: 11222904
    Abstract: A thin film transistor and a manufacturing method thereof, an array substrate and a manufacturing method thereof, and a display device are provided. The thin film transistor is provided on a base substrate and includes: an active layer including a first surface and a second surface which are opposite to each other, in which the second surface is closer to the base substrate than the first surface; and a source-drain electrode layer including a source electrode and a drain electrode which are separated from each other and are respectively connected with the active layer; each of the first surface and the second surface is a non-flat surface, and the non-flat surface includes a plurality of depressions and a plurality of protrusions which are alternately arranged.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: January 11, 2022
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD
    Inventors: Hongru Zhou, Zhonghao Huang, Xu Wu, Chao Zhang, Kai Wang
  • Patent number: 11223562
    Abstract: Systems and methods for selectively processing packets based on their classification by a CBF are provided. According to one embodiment, a network device receives a packet, extracts n-tuple values from the header of the packet that are indicative of a particular transport protocol connection with which the packet is associated, determines whether the particular transport protocol connection represents an active transport protocol connection represented within the CBF by searching the CBF based on the n-tuple values. When the packet is a first packet of a new connection, counters maintained by the CBF corresponding to the n-tuple values are incremented. When a decrement event is detected for one or more of the counters, they are decremented. Finally, the packet is processed in accordance with its classification as a first packet of a new connection or a subsequent packet of an existing connection.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: January 11, 2022
    Assignee: Fortinet, Inc.
    Inventors: Zhi Guo, Xu Zhou, Kan Xiao
  • Publication number: 20220001904
    Abstract: Provided is a method for controlling an anti-yaw damper, including: obtaining lateral acceleration signals of a frame and performing a first preprocessing on the lateral acceleration signals; obtaining a pressure difference between two chambers of an anti-yaw damper piston and performing a second preprocessing of the pressure difference; obtaining an MPPT algorithm objective function value at the current moment and an MPPT algorithm objective function value at the previous moment according to first preprocessing results and second preprocessing results, and comparing the MPPT algorithm objective function value at the current moment with the MPPT algorithm objective function value at the previous moment; and controlling the adjustment direction of an electromagnetic proportional valve of the anti-yaw damper according to the comparison result.
    Type: Application
    Filed: September 9, 2019
    Publication date: January 6, 2022
    Inventors: Haipeng KONG, Xu WANG, Hongyong CAO, Xiaoning CAO, Pingyu ZHOU
  • Patent number: 11210779
    Abstract: Systems and methods are provided for automatic detection and quantification for traumatic bleeding. Image data is acquired using a full body dual energy CT scanner. A machine-learned network detects one or more bleeding areas on a bleeding map from the dual energy CT scan image data. A visualization is generated from the bleeding map. The predicted bleeding areas are quantified, and a risk value is generated. The visualization and risk value are presented to an operator.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: December 28, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Zhoubing Xu, Sasa Grbic, Shaohua Kevin Zhou, Philipp Hölzer, Grzegorz Soza
  • Publication number: 20210398984
    Abstract: A method for forming a memory device includes: providing a substrate including at least word line structures and active regions, and a bottom dielectric layer and bit line contact layers that are on a top surface of the substrate; part of the bit line contact layers are etched to form bit line contact layers at different heights; conducting layers are formed, top surfaces of the conducting layers being at different heights in a direction perpendicular to an extension direction of the word line structure, and the top surfaces of the conducting layers being at different heights in the extension direction of the word line structure; top dielectric layers are formed; and etching is performed to form separate bit line structures.
    Type: Application
    Filed: July 9, 2021
    Publication date: December 23, 2021
    Applicant: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventors: Lintao ZHANG, Thomas Jongwan KWON, Lingguo ZHANG, Xu LIU, Xiangui ZHOU
  • Patent number: 11171722
    Abstract: This application discloses an optical signal transceiver apparatus, and belongs to the communications field.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: November 9, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhenhua Dong, Chao Pan, Zhiyong Feng, Xu Zhou
  • Publication number: 20210344425
    Abstract: Embodiments of the present invention disclose an optical signal transmission system and an optical signal transmission method. A specific solution is as follows: a first coherent transceiver is configured to: convert N channels of downlink data into N modulating signals, convert the N modulating signals into a first wavelength division multiplexing signal, and send the first wavelength division multiplexing signal to an optical transport unit; the optical transport unit is configured to: receive the first wavelength division multiplexing signal, convert the first wavelength division multiplexing signal into N second optical signals, and correspondingly send the N second optical signals to N second coherent transceivers; and one of the N second coherent transceivers is configured to: receive the N second optical signals, and process the N second optical signals to obtain information in downlink data carried in the N second optical signals.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Inventors: Xu ZHOU, Ning DENG
  • Publication number: 20210306373
    Abstract: Systems and methods for providing an integrated or Smart NIC-based hardware accelerator for a network security device to facilitate identification and mitigation of DoS attacks is provided. According to one embodiment, a processor of a network security device receives an application layer protocol request from a client, directed to a domain hosted by various servers and protected by the network security device. The application layer protocol request is parsed to extract a domain name and a path string. The hardware acceleration sub-system updates rate-based counters based on the application layer protocol request by performing a longest prefix match on the domain name and the path string. When a rate threshold associated with the rate-based counters is exceeded, a challenge message is created and transmitted to the client, having embedded therein the application layer protocol request; otherwise the application layer protocol request is allowed to pass through the network security device.
    Type: Application
    Filed: March 31, 2020
    Publication date: September 30, 2021
    Applicant: Fortinet, Inc.
    Inventors: Zhi Guo, Peixue Li, Xu Zhou
  • Publication number: 20210292809
    Abstract: In a method for extracting microbial DNA from milk, the extracted DNA can be directly used for PCR amplification. The method includes the following steps: treating milk with TE solution, fully disrupting microbial cells by bead milling, immobilizing proteins in the middle layer between the aqueous and organic phases with high-vacuum silicone grease so as to prevent impurities in the middle layer from entering the aqueous phase, etc. The extracted DNA has a high degree of intactness, high concentration and purity.
    Type: Application
    Filed: July 13, 2018
    Publication date: September 23, 2021
    Inventors: Jiaqi WANG, Shengguo ZHAO, Nan ZHENG, Xu ZHOU, Songli LI
  • Patent number: 11082131
    Abstract: Embodiments of the present invention disclose an optical signal transmission system and an optical signal transmission method. A specific solution is as follows: a first coherent transceiver is configured to: convert N channels of downlink data into N modulating signals, convert the N modulating signals into a first wavelength division multiplexing signal, and send the first wavelength division multiplexing signal to an optical transport unit; the optical transport unit is configured to: receive the first wavelength division multiplexing signal, convert the first wavelength division multiplexing signal into N second optical signals, and correspondingly send the N second optical signals to N second coherent transceivers; and one of the N second coherent transceivers is configured to: receive the N second optical signals, and process the N second optical signals to obtain information in downlink data carried in the N second optical signals.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: August 3, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xu Zhou, Ning Deng
  • Publication number: 20210175994
    Abstract: This disclosure relates to a signal processing method and apparatus. The method includes: receiving an optical signal in a target receive channel, and converting the optical signal into an electrical signal; determining, in the converted electrical signal, an electrical signal associated with a non-overlapping frequency band between the target receive channel and another channel, where the another channel is a channel that overlaps the target receive channel; and determining, based on the electrical signal associated with the non-overlapping frequency band, an electrical signal corresponding to a valid received optical signal that does not include an interfering optical signal in the target receive channel. In this disclosure, the target transmit channel and the another channel are set to channels that overlap each other, thereby reducing bandwidths occupied by the channels.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Inventors: Xu ZHOU, Xiang LIU, Yansi LE, Zhiyong FENG
  • Patent number: 10996681
    Abstract: In one embodiment, a system determines a difference in time between a local time source and a time of a GPS sensor. The system determines a max limit in difference and a max recovery increment or max recovery time interval for a smooth time source recovery. The system determines that the difference between the local time source and a time of the GPS sensor to be less than the max limit. The system plans a smooth recovery of the time source to converge the local time source to a time of the GPS sensor within the max recovery time interval. The system generates a timestamp based on the recovered time source to timestamp sensor data for a sensor unit of the ADV.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: May 4, 2021
    Assignee: BAIDU USA LLC
    Inventors: Oh Kwan, Manjiang Zhang, Xiangtao You, Tiffany Zhang, Xu Zhou
  • Publication number: 20210084011
    Abstract: Systems and methods are described for providing effective hardware acceleration by performing a combination of string matching and range comparison. According to one embodiment, acceleration device of a host device associated with datacenter receives an input stream of information. The received information is matched with contents of a hash-based lookup table to identify one or more units, which satisfy at least one condition for any or a combination of a string match and a range comparison. The identified one or more units are correlated based on a set of conditions, which define at least one rule related to any of a network policy definition, a packet inspection rule, a database operation command or a format of the input stream. Any or a combination of exact string matching and exact range matching is then performed based on the at least one set of correlated units.
    Type: Application
    Filed: September 16, 2019
    Publication date: March 18, 2021
    Applicant: Fortinet, Inc.
    Inventors: Zhi Guo, Xu Zhou
  • Patent number: 10944724
    Abstract: Systems and methods for accelerating computer network policy searching are provided. According to one embodiment, a packet is received by a policy search engine (PSE) of a packet processing device. A set of candidate policies are identified from among multiple policies of the packet processing device by screening the multiple policies by a speculation unit of the PSE based on metadata associated with the received packet. Finally, a matching policy for the received packet is identified by a policy search processor (PSP) of the PSE by executing policy-search-specific instructions and general purpose instructions.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 9, 2021
    Assignee: Fortinet, Inc.
    Inventors: Zhi Guo, Xu Zhou, Yujiao Zheng, John A. Cortes
  • Publication number: 20210067244
    Abstract: This application discloses an optical signal transceiver apparatus, and belongs to the communications field.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Inventors: Zhenhua DONG, Chao PAN, Zhiyong FENG, Xu ZHOU
  • Publication number: 20200327234
    Abstract: In one embodiment, a computer-implemented method of performing a secure boot operation in an autonomous driving vehicle includes reading a first marker from a storage device in which the storage device includes a plurality of partitions and at least the first marker. The plurality of partitions includes a first partition including stored software, the first marker associated with the first partition, and wherein the first marker includes a unique identifier and an authentication code. The method further includes determining if the read first marker associated with the first partition is valid during a boot-up operation and executing the stored software in the first partition if the read first marker is determined valid.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 15, 2020
    Inventors: SHENGJIN ZHOU, MANJIANG ZHANG, TIFFANY ZHANG, MIN GUO, XU ZHOU, JI LI
  • Patent number: 10788841
    Abstract: In one embodiment, a sensor unit to be utilized in an autonomous driving vehicle (ADV) includes a sensor interface coupled to a number of sensors mounted on a number of locations of an autonomous driving vehicle (ADV). The sensor unit includes a host interface to be coupled to a host system, where the host system is configured to perceive a driving environment surrounding the ADV based on sensor data obtained from the sensors and to plan a path to autonomously drive the ADV. The sensor unit includes a time synchronization hub device coupled to the sensor interface. The time synchronization hub device includes one or more TX and/or RX timestamp generators coupled to a time source, where the TX/RX timestamp generators generate TX/RX timestamps based on a time obtained from the time source to provide the TX/RX timestamps to one or more of the sensors.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: September 29, 2020
    Assignee: BAIDU USA LLC
    Inventors: Manjiang Zhang, Xu Zhou, Oh Kwan, Ji Li