Patents by Inventor Lei Han

Lei Han 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: 20210110599
    Abstract: Provided are a depth camera based three-dimensional reconstruction method and apparatus, a device and a storage medium. The method includes: acquiring at least two frames of images obtained by capturing a target scenario by a depth camera; determining, according to the at least two frames of images, relative camera poses in response to capturing the target scenario by the depth camera; by adopting a manner of at least two levels of nested screening, determining at least one feature voxel from each frame of image, where each level of screening adopts a respective voxel partitioning rule; fusing and calculating the at least one feature voxel of each frame of image according to a respective relative camera pose of each frame of image to obtain a grid voxel model of the target scenario; and generating an isosurface of the grid voxel model to obtain a three-dimensional reconstruction model of the target scenario.
    Type: Application
    Filed: April 28, 2019
    Publication date: April 15, 2021
    Applicant: Tsinghua University
    Inventors: Lu Fang, Mengqi Ji, Lei Han, Zhuo Su, Qionghai Dai
  • Publication number: 20210094389
    Abstract: A heat pump air conditioner assembly for an electric vehicle and a control method thereof, and an electric vehicle with the heat pump air conditioner assembly for the electric vehicle are provided. The heat pump air conditioner assembly includes a heat pump air conditioning system and a HVAC box body. An in-vehicle heat exchanger of the heat pump air conditioning system is located in the HVAC box body. An auxiliary heater is also arranged in the HVAC box body. The auxiliary heater is located at a leeward side of the in-vehicle heat exchanger. The heat pump air conditioning system is provided with a defrosting branch connecting with a refrigerant outlet of an external heat exchanger and a suction port of a compressor. When the heat pump air conditioning system is in a defrosting mode, the HVAC box body supplies air to the vehicle, the auxiliary heater is turned on.
    Type: Application
    Filed: December 22, 2017
    Publication date: April 1, 2021
    Inventors: Junfeng LI, Huaying CHEN, Lei HAN, Xiao LI, Aibin GUO
  • Patent number: 10931580
    Abstract: Embodiments of the present disclosure provide a packet processing method and a network device, so as to effectively resolve a problem that a quantity of concurrent packet processing policies is limited in a network device due to scarce hardware resources of a packet forwarding chip. A method part in the embodiments of the present disclosure includes: obtaining, by a first network device, identification information; processing, by the first network device, a packet when receiving the packet, where a processed packet includes the identification information, and packets corresponding to different preset policy information include different identification information; and sending, by the first network device, the processed packet to a second network device, so that the second network device matches a corresponding policy for the processed packet based on the identification information.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: February 23, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hewen Zheng, Lei Han, Haidong Feng
  • Publication number: 20210038444
    Abstract: A method for isolating microorganisms from areas external and proximate a menstruating user's genital area is also disclosed. The method utilizes an absorbent article having a topsheet formed of nonwoven web material having favorable skin-feel qualities associated with nonwovens, and including hydrophilic fibers. A tendency of the topsheet material to absorb and retain discharged menstrual fluid, resulting from presence of hydrophilic fibers, is mitigated by inclusion of an absorbent core structure including suitable absorbent, open-celled foam material disposed directly beneath the topsheet in closely maintained, direct face-to-face contact with the outward-facing surface thereof. The absorbent foam may be suitably manufactured so as to have the ability to effectively draw fluid from the topsheet and retain it away from the topsheet. In such configuration, growth of microorganisms that might by supported by fluid retained by the topsheet, proximate the wearer's skin surfaces, is reduced or prevented.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Inventors: Digvijay RAWAT, Lei HAN, Lijiang WANG, Yafang LIN
  • Patent number: 10894484
    Abstract: A remote energy monitoring and swapping network for electric vehicle based on cloud computing network, which uses cloud computing technology, Internet of Things technology, video identification technology and remote monitoring system with remote monitoring center based on multi-type monitoring system to control electric vehicle, remote battery monitoring system and battery swapping system. The remote monitoring center and battery swapping system replace the first battery pack and the second battery pack on the electric vehicle chassis in nine steps. Battery swapping station solves the problem of battery energy supply by station nets, which lays a theoretical and technical foundation for the popularization of electric vehicles. The remote monitoring center's control of the whole battery swapping process improves the work efficiency, saves labor cost and reduce battery cost.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 19, 2021
    Inventor: Lei Han
  • Publication number: 20210008518
    Abstract: Described herein is a process for producing perfume- or flavor-containing microcapsules with improved deposition of encapsulated actives on targeted surfaces such as fiber, hair and skin, which can be used in home or personal care products. Also described herein are microcapsules obtainable by such a process and consumer products including these microcapsules.
    Type: Application
    Filed: March 25, 2019
    Publication date: January 14, 2021
    Inventors: Lei Shi, Lahoussine Ouali, Lei Han
  • Publication number: 20200398473
    Abstract: The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections.
    Type: Application
    Filed: September 3, 2020
    Publication date: December 24, 2020
    Inventors: Zhaojun Sun, Jun He, Lei Han, Zhen Wang, Dongdong Han, Qiushi Ren, Bingzhong Jiao, Yuanjiao Guo, Menggang Li, Xingqiang Li
  • Publication number: 20200393101
    Abstract: A brown-out detection apparatus including a voltage sensing circuit, a first circuit, and a second circuit. The voltage sensing circuit senses an input AC voltage having a first nominal input voltage value or a second nominal input voltage value. The voltage sensing circuit includes an output outputting a reference DC voltage proportional said input AC voltage. The first circuit is responsive to said output of said voltage sensing circuit. The first circuit includes a first output outputting a first voltage value when said input AC voltage is below a threshold voltage level and a second voltage value when said input AC voltage is above said threshold level. The second circuit is responsive to said first output. The second circuit includes a second output outputting a second control signal indicative of a brown-out condition of said input AC voltage.
    Type: Application
    Filed: August 27, 2020
    Publication date: December 17, 2020
    Inventors: Lei Han, John Evan Lane
  • Publication number: 20200389982
    Abstract: An apparatus includes a printed circuit board and a flexible printed circuit. A rigid structure component is on a first side of the printed circuit board. An interconnection interface is on a second side of the printed circuit board opposite to the rigid structure component and is configured to interconnect the flexible printed circuit and the printed circuit board. A conductive interconnection material is at the interconnection interface between the flexible printed circuit and the printed circuit board.
    Type: Application
    Filed: December 22, 2017
    Publication date: December 10, 2020
    Inventors: David POWNEY, Ilkka SAARINEN, Mikko KYLKILAHTI, Lei HAN
  • Patent number: 10853209
    Abstract: Techniques for data synchronization involve obtaining a first bitmap about a first storage device, the first storage device including a group of storage areas, a bit in the first bitmap indicating whether data in a corresponding storage area of a first size in the group of storage areas is to be synchronized to a second storage device. The technique further involves, in response to a configuration of the first storage device being changed, determining a second size of a storage area in the group of storage areas. The technique further involves converting the first bitmap into a second bitmap based on the first size and the second size. In addition, the technique further involves synchronizing data from the first storage device to the second storage device based on the second size and the second bitmap.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 1, 2020
    Assignee: EMC IP Holding Company LLC
    Inventors: Yue Yang, Xin Zhong, Yangfeng Chen, Qing Hua Ling, Yan Shao, Yuan Gu, Jianbao Li, Lei Han, Wei Feng
  • Patent number: 10855618
    Abstract: The present invention discloses a bandwidth adjustment method and a related device, so as to flexibly adjust a bandwidth. A controller obtains behavior characteristic statistics sent by an end cloud node device, and obtains bandwidth resources remaining on a system. The behavior characteristic statistics are a statistical result indicating behavior characteristics of occupying network bandwidth resources by a user when accessing the end cloud node device. The controller determines a bandwidth adjustment amount of the end cloud node device according to the behavior characteristic statistics and bandwidth remaining on the system. The controller sends a bandwidth adjustment instruction to a first network device. The bandwidth adjustment instruction is used to instruct the first network device to adjust, according to the bandwidth adjustment amount, a bandwidth allocated to the end cloud node device by a network device on a transmission link.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: December 1, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hao Wang, Hongguang Guan, Lei Han, Hanyu Wei
  • Publication number: 20200374788
    Abstract: A method includes selecting N cells waiting to be camped on from a candidate cell list, decoding a Physical Broadcast Channel (PBCH) of each of the selected N cells waiting to be camped on, selecting, from at least one cell whose PBCH is successfully decoded, one cell as a cell continuing waiting to be camped on, and when a remaining minimum system information (RMSI) decoding result of the cell continuing waiting to be camped on indicates that the cell continuing waiting to be camped on meets a camping criterion, determining the cell continuing waiting to be camped on as the cell to be camped on.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Inventors: Jingxin Wei, Lei Han, Kun Feng
  • Publication number: 20200358339
    Abstract: A shielding system for an electric vehicle motor controller to shield external electromagnetic pulse attack. Signal lines, control line protectors, first power surge protectors, second power surge protectors and third power surge protectors installed inside the outer shield body of the motor controller absorb the current induced by the external electromagnetic field on the shield, signal line, first power line and second power line, coolant inlet and coolant outlet, preventing the remaining current from inducing a new strong electromagnetic field to attack the motor controller. The cooling liquid cooling system may keep the temperature of the motor controller of the electric vehicle not change when running under heavy load. The above technology may ensure the motor controller of the electric vehicle running according to the design requirements.
    Type: Application
    Filed: March 28, 2017
    Publication date: November 12, 2020
    Inventor: Lei HAN
  • Publication number: 20200352055
    Abstract: The application relates to a high-efficiency phase-change condenser for a supercomputer, including a condenser box body, a refrigerant input pipe, a refrigerant output pipe and a condensing coil; a liquid refrigerant accommodated in the condenser box body, and a gas-phase region existing between a liquid level of the liquid refrigerant and a top of the refrigerant box body; one portion of the condensing coil immersed into the liquid refrigerant, and the other portion of the condensing coil located in the gas-phase region above the liquid level of the liquid refrigerant; and in the gas-phase region, refrigerant vapor bubbles are liquified by the condensing coil. Liquid-phase and gas-phase saturated refrigerants can be completely condensed by the condensing coil in a limited condenser space, thereby improving heat exchange efficiency of the condenser.
    Type: Application
    Filed: December 26, 2017
    Publication date: November 5, 2020
    Inventors: Jisheng He, Xintao Cui, Lei Han, Bingshuang Li, Jiawei Liu, Yingjun Wu, Shuai Zhang, Zhihong Zhao, Chen Wang, Hongjie Wu, Peng Zhang
  • Publication number: 20200317819
    Abstract: The present disclosure relates to the field of biological technologies, and discloses a method for expressing and preparing a polyvalent multi-specific antibody and an immune hybrid protein. By using the characteristics of protein Intein, a novel method for preparing a polyvalent specific antibody, a hybrid immune protein having an antibody fused to a cytokine, an immunotoxin having an antibody fused to a toxin, or an immune hybrid protein having an antibody fused to other active proteins is designed and developed. Each portion of a hybrid protein is respectively expressed in a suitable prokaryotic or eukaryotic cell system, separated and purified by high-performance affinity chromatography, and then spliced in vitro by trans-splicing mediated by the intein, to prepare a polyvalent specific antibody and an immune hybrid protein. The method has high production efficiency, and wide scope of application, and facilitates the separation and purification of the products.
    Type: Application
    Filed: December 16, 2016
    Publication date: October 8, 2020
    Inventors: Jianwei ZHU, Lei HAN, Junsheng CHEN, Kai DING, Yueqing XIE, Hua JIANG, Huili LU, Baohong ZHANG, Lei ZHANG
  • Patent number: 10794555
    Abstract: Systems and methods provide LED-based emergency lighting utilizing AC-DC switch mode power conversion technology, NiMH battery technology, and emergency lighting lamps that use high power white LEDs as the emergency lighting source. A low voltage microprocessor based circuit design reduces the battery input voltage for the unit to a nominal level of 2.4VDC. The microprocessor executes a pulse charging algorithm to lower battery maintenance mode power consumption levels and extend the useful life of the battery. Brownout detection technology does not require the determination of the AC input voltage level or transmission of the brownout detection signal to the secondary side of the circuit. A rechargeable battery is charged by a charge current selectively set to a bulk charge value, a trickle charge high value, or a trickle charge low value based on sampling of the voltage of the rechargeable battery and the charge current.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: October 6, 2020
    Assignee: Hubbell Incorporated
    Inventors: Lei Han, John Evan Lane
  • Patent number: 10786937
    Abstract: The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 29, 2020
    Assignee: Ningxia University
    Inventors: Zhaojun Sun, Jun He, Lei Han, Zhen Wang, Dongdong Han, Qiushi Ren, Bingzhong Jiao, Yuanjiao Guo, Menggang Li, Xingqiang Li
  • Publication number: 20200245438
    Abstract: An emergency lighting unit including a power input. a light source, a battery configured to receive charging current from the power input. wireless communication circuitry configured to receive a wireless communication signal, and a controller connected to the wireless communication circuitry. The controller is configured to control the charging of the battery based on the wireless communication signal.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Inventors: Lei Han, John Lane
  • Publication number: 20200163186
    Abstract: A power supply system for a lighting unit, comprises a driver, a local energy storage device and a converter. The converter implements a first, charging mode, mode by connecting to the output of said driver for diverting at least a part of the driving current from the lighting unit to charge the energy storage device, a second, battery driving, mode by connecting to the lighting unit for converting the local energy storage device power supply to drive the lighting unit, and a third, grid driving, mode to neither charge the energy storage device nor convert the secondary power supply. The converter and the driver are controlled actively and synchronously to maintain the current through the lighting unit when switching the converter between modes.
    Type: Application
    Filed: June 22, 2018
    Publication date: May 21, 2020
    Inventors: Vasu POOJARY, Lei HAN, Yuhong FANG, Mark CIOLEK, Venkata Sriram PULLELA, Mahadev CHOLACHAGUDDA, Vikram SHIVANNA, Anil Shivram RAIKER
  • Patent number: 10624177
    Abstract: An emergency lighting unit including a light source, a wireless communication module configured to receive a wireless communication signal, and a controller connected to the wireless communication module. The controller is configured to set a system parameter of the emergency lighting unit based on the wireless communication signal, and control the illumination of the light source based on the one system parameter.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: April 14, 2020
    Assignee: Hubbell Incorporated
    Inventors: Lei Han, John Lane