Patents by Inventor Chen Zhao

Chen Zhao 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: 20220022047
    Abstract: A frequency spectrum management apparatus in a coexistence system according to the present disclosure includes a processing circuit configured to determine a plurality of settlement solutions of interference overlapping images according to differences between an interference overlapping image determined by the frequency spectrum management apparatus and interference overlapping images determined by other frequency spectrum management apparatuses in the coexistence system, and to determine a final settlement solution based on the total system utility of the coexistence system and according to the plurality of settlement solutions.
    Type: Application
    Filed: December 20, 2019
    Publication date: January 20, 2022
    Applicant: Sony Group Corporation
    Inventors: Youping ZHAO, Cong LU, Chen SUN, Xin GUO
  • Patent number: 11226648
    Abstract: A power factor correction circuit includes a power meter configured to measure a total harmonic distortion (THD) at an input port; a switching-type regulator that is controllable by a switch control signal in order to adjust a power factor; and a controller configured to generate the switch control signal to control the switching-type regulator to perform power factor correction, where the controller adjusts an on-time of a main switch of the switching-type regulator based on the measured THD to decrease the THD.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: January 18, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Zhaofeng Wang, Xiaodong Huang, Chen Zhao
  • Patent number: 11226536
    Abstract: A wavelength conversion system including: A. a first nonlinear optical crystal to which first pulsed laser light having a first polarization state and a first wavelength and second pulsed laser light having a second polarization state and a second wavelength are inputted and which is configured to output in response to the input the second pulsed laser light and first sum frequency light having the second polarization state and a third wavelength produced by sum frequency mixing of the first wavelength with the second wavelength; and B. a second nonlinear optical crystal to which the first sum frequency light and the second pulsed laser light outputted from the first nonlinear optical crystal are inputted and which is configured to output in response to the input third pulsed laser light having a fourth wavelength.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: January 18, 2022
    Assignees: Gigaphoton Inc., The University of Tokyo
    Inventors: Chen Qu, Yohei Kobayashi, Zhigang Zhao, Hironori Igarashi
  • Publication number: 20220013671
    Abstract: Fabricating a vertical-channel junction field-effect transistor includes forming an unintentionally doped GaN layer on a bulk GaN layer by metalorganic chemical vapor deposition, forming a Cr/SiO2 hard mask on the unintentionally doped GaN layer, patterning a fin by electron beam lithography, defining the Cr and SiO2 hard masks by reactive ion etching, improving a regrowth surface with inductively coupled plasma etching, removing hard mask residuals, regrowing a p-GaN layer, selectively etching the p-GaN layer, forming gate electrodes by electron beam evaporation, and forming source and drain electrodes by electron beam evaporation. The resulting vertical-channel junction field-effect transistor includes a doped GaN layer, an unintentionally doped GaN layer on the doped GaN layer, and a p-GaN regrowth layer on the unintentionally doped GaN layer. Portions of the p-GaN regrowth layer are separated by a vertical channel of the unintentionally doped GaN layer.
    Type: Application
    Filed: July 12, 2021
    Publication date: January 13, 2022
    Inventors: Yuji Zhao, Chen Yang, Houqiang Fu, Xuanqi Huang, Kai Fu
  • Publication number: 20220004742
    Abstract: An ambient light parameter is acquired by detecting ambient light of a surveillance area. When there is a target object in the surveillance area, a movement distance of the target object is detected. When the ambient light parameter meets an ambient light condition and the movement distance of the target object is no less than a distance threshold, the ambient light parameter is changed by adjusting screen brightness of a display device according to the ambient light parameter. A face image of the target object after the ambient light parameter has been changed is acquired. A comparison result of comparing the face image to a preset image is acquired. A face recognition result is acquired according to the comparison result.
    Type: Application
    Filed: September 22, 2021
    Publication date: January 6, 2022
    Inventors: Siting HU, Wenzhong JIANG, Hongbin ZHAO, Chen CHEN, Junqiang LI
  • Patent number: 11215012
    Abstract: A cutting element may include a substrate, an upper surface of the substrate including a crest, the crest transitioning into a depressed region, and an ultrahard layer on the upper surface, thereby forming a non-planar interface between the ultrahard layer and the substrate. A top surface of the ultrahard layer includes a cutting crest extending along at least a portion of a diameter of the cutting element, the top surface having a portion extending laterally away from the cutting crest having a lesser height than a peak of the cutting crest.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: January 4, 2022
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Chen Chen, Huimin Song, Liang Zhao, Youhe Zhang, Michael G. Azar, Xiaoge Gan, Madapusi K. Keshavan, Zhijun Lin, Bala Durairajan, Michael L. Stewart
  • Publication number: 20210405394
    Abstract: A liquid crystal cell, a method of driving a liquid crystal cell, and a liquid-crystal-based spectacle lens are provided. The liquid crystal cell includes: a ring-like electrode layer, a liquid crystal layer, and an opposite electrode layer. The second ring-like electrode region is concentric with the first ring-like electrode region and surrounds the first ring-like electrode region; the first ring-like electrode region is configured to drive corresponding liquid crystal molecules in the liquid crystal layer, so as to form a first Fresnel zone plate region in the liquid crystal cell; the second ring-like electrode region is configured to drive corresponding liquid crystal molecules in the liquid crystal layer, so as to form a second Fresnel zone plate region of the liquid crystal cell; an order of the second Fresnel zone plate region is smaller than an order of the first Fresnel zone plate region.
    Type: Application
    Filed: November 19, 2018
    Publication date: December 30, 2021
    Inventors: Zhongxiao LI, Xiaochuan CHEN, Wenqing ZHAO, Weili ZHAO, Haiyan WANG, Chen Yu CHEN
  • Publication number: 20210404541
    Abstract: A gear train side latching mechanism may include a bracket having one or more guiding features, a handle mechanically coupled to the bracket via the one or more guiding features such that the handle is linearly movable with respect to the bracket, a rack mechanically coupled to the handle comprising a first plurality of gear teeth and configured to move linearly relative to the bracket in a fixed relation to the handle, a driving gear rotatably coupled to the bracket and comprising a compound circular spur gear having a second plurality of gear teeth on an outer diameter of the driving gear and a third plurality of gear teeth on an inner diameter of the driving gear, wherein the second plurality of gear teeth are mechanically coupled to the first plurality of gear teeth, and an actuator gear rotatably coupled to the bracket and comprising a fourth plurality of gear teeth mechanically coupled to the third plurality of gear teeth and further comprising one or more features configured to engage with a correspond
    Type: Application
    Filed: July 9, 2020
    Publication date: December 30, 2021
    Applicant: Dell Products L.P.
    Inventors: Harris DI, Qingqiang GUO, Chen ZHAO
  • Publication number: 20210405327
    Abstract: The disclosure provides an optical imaging system, which sequentially includes, from an object side to an image side along an optical axis: a first lens, second lens, third lens, fourth lens, fifth lens, sixth lens and seventh lens with refractive power; and a diaphragm arranged between the second lens and the third lens, wherein an effective focal length f1 of the first lens and a total effective focal length f of the optical imaging system meet 1.5<f1/f<3.0; and a radius of curvature R13 of an object-side surface of the seventh lens and a radius of curvature R14 of an image-side surface of the seventh lens meet 1.5<R13/R14<2.0.
    Type: Application
    Filed: June 16, 2021
    Publication date: December 30, 2021
    Inventors: Fujian DAI, Chen CHEN, Wuchao XU, Liefeng ZHAO
  • Publication number: 20210408891
    Abstract: An integrated driver applied to a voltage converter having a switched capacitor conversion circuit, the integrated driver including: a first die having a first-type power transistor; a second die including at least one second-type power transistor, where a withstand voltage of the first-type power transistor is higher than a withstand voltage of the second-type power transistor; and where the first die and the second die are coupled in series between a high potential terminal and a low potential terminal of the voltage converter, such that the first-type power transistor receives a high voltage signal.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 30, 2021
    Inventors: Kaiwei Yao, Wang Zhang, Chen Zhao
  • Publication number: 20210399252
    Abstract: Aspects of the present disclosure describe systems, methods, and structures that provide organic light-emitting diodes having high luminous efficiency and low electrical dissipation. Embodiments in accordance with the present disclosure include a top electrode normally comprising a single film that includes a pair of metals and one metal compound, where the metals include a precious metal in combination with an alkaline earth metal or rare-earth metal and the metal compound is an alkali metal compound. As a result, such a top electrode has a work function that is better matched for efficient electron injection than magnesium-silver alloy-based transparent electrodes known in the prior art.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 23, 2021
    Inventors: Fangchao ZHAO, Ilyas I. KHAYRULLIN, Chen DONG, Amalkumar P. GHOSH
  • Publication number: 20210399642
    Abstract: A power converter can include: N switching power stage circuits, where output terminals of the N switching power stage circuits are connected in parallel, and N is a positive integer; an energy storage element coupled between an input terminal and the output terminal of the power converter, where the energy storage element is configured to periodically store energy for delivery to the output terminal of the power converter; and where after a main transistor of an M-th switching power stage circuit is turned off, a main transistor of the (M+1)-th switching power stage circuit is turned on, in order to realize zero-voltage-switching (ZVS) of the main transistor of (M+1)-th switching power stage circuit, where M is a positive integer less than N.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 23, 2021
    Inventors: Kaiwei Yao, Wang Zhang, Chen Zhao
  • Publication number: 20210398273
    Abstract: A plurality of light sources placed at one end of a surface imaging system may generate and direct light rays to be incident onto a surface to be detected at high incident angles that are greater than or equal to a predetermined angle threshold, the predetermined angle threshold may be set to ensure that images of the surface to be detected that have at least a predetermined degree of contrast are to be obtained. An image sensor that is placed at another end of the surface imaging system may collect light rays reflected from the surface to be detected to form a first image of the surface to be detected.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 23, 2021
    Inventors: Jin Ryong Kim, Hyunjae Gil, Stephanie CHAN, Chen ZHAO
  • Publication number: 20210395522
    Abstract: The present invention provides for a polymer composition comprising a carboxylic acid-containing polymer (CP) and an amino-containing polymer (AP). The CP and the AP are capable of crosslinking to each other through ionic interaction of the carboxylic acid and amino functional groups. The CP and the AP can be unlinked by increasing the pH of the polymer composition to about pH 13.
    Type: Application
    Filed: May 17, 2021
    Publication date: December 23, 2021
    Inventors: Gao Liu, Zhimeng Liu, Xin He, Chen Fang, Yangzhi Zhao, Robert Kostecki
  • Publication number: 20210389766
    Abstract: Embodiments of the present disclosure relate to a water body pollution intelligent investigation method and device based on unmanned ships. The method includes: determining a first pollutant concentration value of a monitored water area according to water quality data of the monitored water area; controlling an unmanned ship to cruise in the monitored water area according to a preset cruise trajectory and perform water quality collection to obtain a second pollutant concentration value of the monitored water area; determining, when there is an abnormal cruise coordinate point, a target cruise trajectory according to the second pollutant concentration value of the abnormal cruise coordinate point; and controlling the unmanned ship to cruise according to the target cruise trajectory to determine a pollution source of the monitored water area.
    Type: Application
    Filed: April 26, 2021
    Publication date: December 16, 2021
    Inventors: LIEYU ZHANG, MENGYU YANG, CAOLE LI, JIAQIAN LI, CHEN ZHAO, WEI LI, XIAOGUANG LI, GUOWEN LI
  • Publication number: 20210389293
    Abstract: Embodiments of the present disclosure relate to a water area pollution intelligent monitoring and analysis method and system. The method includes: acquiring, by a receiving module of a water area pollution monitoring and analysis device, water quality data of a monitored water area; inputting, by a processing module in the water area pollution monitoring and analysis device, the water quality data into a water quality feature extraction model in the processing module to obtain water quality features of the monitored water area, where the water quality feature extraction model is previously trained; determining, by an encoding module in the water area pollution monitoring and analysis device, a state diagram of the monitored water area according to the water quality features; and sending, by a routing module in the water area pollution monitoring and analysis device, the state diagram to a preset server.
    Type: Application
    Filed: April 26, 2021
    Publication date: December 16, 2021
    Inventors: LIEYU ZHANG, RENHAO TANG, XIAOSHU WEI, XIAOGUANG LI, GUOWEN LI, CHEN ZHAO, JIAQIAN LI, WEI LI
  • Publication number: 20210387882
    Abstract: The present invention relates to the field of water environment treatment, and particularly discloses a method for carrying out whole-process treatment on phytoplankton.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 16, 2021
    Inventors: Lieyu Zhang, Qiuheng Zhu, Wei Li, Guowen Li, Xiaoguang Li, Caole Li, Jiaqian Li, Lulu Che, Chen Zhao
  • Publication number: 20210386039
    Abstract: The disclosure relates to the technical field of aquaculture, and more particularly to a fish breeding device provided with a magnetizer and a method for accelerating normal propagation and growth speeds of fishes. The fish breeding device includes a box body, a controllable partition plate, an extraction pump, and the magnetizer; the controllable partition plate is arranged in the box body and used for dividing the inner space of the box body into a feeding area and a non-feeding area; the extraction pump is arranged on the controllable partition plate and used for exchanging the water body in the feeding area with the water body in the non-feeding area; the magnetizer is arranged on the outer wall of the box body corresponding to the feeding area, and used for magnetizing the water body of the feeding area. In the disclosure, fish eggs are further hatched by the magnetized water.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 16, 2021
    Inventors: Lieyu Zhang, Jiaqian Li, Xiaoguang Li, Guowen Li, Wei Li, Caole Li, Chen Zhao, Lulu Che, Qiuheng Zhu
  • Publication number: 20210387883
    Abstract: The present invention relates to the field of water environment treatment, and particularly discloses a system and method for restoring a river and lake water body by a floating type water purification plant.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 16, 2021
    Inventors: Lieyu Zhang, Quiheng Zhu, Guowen Li, Xiaoguang Li, Caole Li, Wei Li, Jiaqian Li, Lulu Che, Chen Zhao
  • Publication number: 20210389290
    Abstract: Embodiments of the present application relate to methods, devices, apparatuses, and storage media for monitoring and analyzing air pollution. The methods includes acquiring air quality data of a monitored area, where the air quality data includes ground air quality data corresponding to the monitored area and N-component data collected by an air sensor in the monitored area; inputting the air quality data into a pollution analysis model, where the pollution analysis model is previously trained according to the ground air quality data and the N-component data; and determining whether the air quality data of the monitored area is abnormal according to an output result of the pollution analysis model. The methods may solve the technical problem of inaccurate monitoring results caused by the susceptibility of air quality monitoring in related technologies to human intervention.
    Type: Application
    Filed: April 28, 2021
    Publication date: December 16, 2021
    Inventors: LIEYU ZHANG, Gengyuan Liu, Guowen Li, Lulu Che, Xiaoguang LI, Jiaqian Li, Chen Zhao, WEI LI