Patents by Inventor Zheng Du
Zheng Du 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).
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Publication number: 20240175340Abstract: The present disclosure relates to a method and system for predicting a time-varying principle of waterflooding oil reservoir formation parameters. Firstly, a T2 spectrum-pore size relation model is built according to a measured pore size distribution curve and a measured T2 spectrum. A T2 spectrum of a rock sample at different water injection amounts during a waterflooding physical simulation experiment is acquired. The acquired T2 spectrum at different water injection amounts is then converted into a pore size distribution at different water injection amounts, and a pore network model at different water injection amounts is built with the pore size distribution. Oil-water two-phase flow simulation is performed, and a corresponding oil-water two-phase relative permeability curve of the rock sample at different pore volume (PV) multiples is obtained eventually. The oil-water two-phase relative permeability curve is the formation parameters in the waterflooding oil reservoir.Type: ApplicationFiled: July 26, 2023Publication date: May 30, 2024Inventors: Sen WANG, Kun WANG, Qihong FENG, Shunming LI, Yijing DU, Zheng WU, Xiang WANG, Jiyuan ZHANG, Xianmin ZHANG
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Publication number: 20240100015Abstract: The present disclosure provides an arctigenin liquid nano-preparation and a preparation method thereof, and relates to the technical field of pharmaceutical preparation. In the present disclosure, arctigenin is prepared into a liquid nano-preparation, having advantages of distribution of a droplet diameter on nanoscale, significantly increased specific surface area, rapid absorption, and high bioavailability. Meanwhile, nano-preparation entered the body can be captured by wandering leucocytes, and a medicament is delivered to inflammatory lesions through chemiotaxis, thereby conferring a targeted drug delivery feature on the arctigenin and making a therapy more targeted. Moreover, in the present disclosure, the arctigenin is dissolved in an oil phase, and the oil phase is dissolved in water by emulsification to further make the arctigenin dissolve in the water and increase water solubility of the arctigenin.Type: ApplicationFiled: November 16, 2022Publication date: March 28, 2024Inventors: Bin HE, Lijun WU, Zheng LU, Zhiping RAN, Guoming CHEN, Zhiyong SHAO, Xiabing CHEN, Wei LIU, Ying LI, Wu LIU, Qi ZHOU, Wenhai YANG, Dongqing LIU, Kangyu DU
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Patent number: 11929070Abstract: Techniques for performing centralized unsuperivised learning in a multi-domain system are described. A user may request labeled data for an ML task, where the request includes a prompt for obtaining relevant explicit user feedback. The system may use the prompt to collect explicit user feedback for relevant runtime user inputs. After a duration of time (in the user's request for labeled data) has elapsed, the system determines whether collected user feedback indicates processing of the user input was defective and, if so, determines a cause of the defective processing. The system then uses one or more label generators to generate labeled data using the collected user feedback, whether the processing was defective, and the determined defect cause.Type: GrantFiled: August 30, 2021Date of Patent: March 12, 2024Assignee: Amazon Technologies, Inc.Inventors: Ruhi Sarikaya, Zheng Du, Xiaohu Liu, Kai Liu, Sriharsha Venkata Chintalapati, Chenlei Guo, Hung Tuan Pham, Joe Pemberton, Zhenyu Yao, Bigyan Rajbhandari
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Patent number: 11546774Abstract: A method for controlling access to a restricted resource is provided. The method may include receiving, by a cloud server, an identifier from a user device over a long range wireless channel. Further, the method may include comparing the identifier with a plurality of identifiers registered with an access control device. Further, the method may include authenticating the user device based on the comparing and subsequently transmitting a code to the user device upon successful authenticating. Thereafter, the user device may transmit the code to the access control device over a short range wireless channel. Further, the access control device may be configured to provide access to the restricted resource based on receiving of the code. Further, the method may include transmitting the code to the access control device over a long range wireless channel so that the access control device may authenticate the user device.Type: GrantFiled: October 7, 2020Date of Patent: January 3, 2023Inventor: James Zheng Du
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Publication number: 20210105616Abstract: A method for controlling access to a restricted resource is provided. The method may include receiving, by a cloud server, an identifier from a user device over a long range wireless channel Further, the method may include comparing the identifier with a plurality of identifiers registered with an access control device. Further, the method may include authenticating the user device based on the comparing and subsequently transmitting a code to the user device upon successful authenticating. Thereafter, the user device may transmit the code to the access control device over a short range wireless channel. Further, the access control device may be configured to provide access to the restricted resource based on receiving of the code. Further, the method may include transmitting the code to the access control device over a long range wireless channel so that the access control device may authenticate the user device.Type: ApplicationFiled: October 7, 2020Publication date: April 8, 2021Inventor: James Zheng Du
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Publication number: 20200106462Abstract: This application relates to a decoding method and a decoder. The decoding method includes: calculating, based on a path selection result of a second hit group in a current code block to be decoded, LLRs (log-likelihood ratios) of a first bit group in the code block, where the path selection result includes L paths; calculating BMs (branch metrics) of the first bit group based on the LLRs; selecting at least L BMs for each of the L paths; determining PMs (path metrics) of the first bit group based on the at least L BMs and a path selection result of a previous hit group of the first bit group; and determining a path selection result of the first bit group based on the PMs. In an entire decoding process, other phases before the PM calculation phase can be performed in parallel, thereby reducing a decoding delay, and improving decoding efficiency.Type: ApplicationFiled: November 26, 2019Publication date: April 2, 2020Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Tao Zhang, Zheng Zheng, Zheng Du
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Patent number: 9355821Abstract: A large-area plasma generating apparatus is disclosed, which includes a reaction chamber; a first electrode disposed in the reaction chamber; a second electrode parallel with the first electrode and disposed in the reaction chamber; and a discharge region formed between the first and second electrodes and a plasma can be formed therein; wherein a travelling wave or a traveling-wave-like electromagnetic field is generated via at least one of the first and second electrodes and travels from one end of the discharge region to its opposite end, so as to uniform the plasma in the discharge region.Type: GrantFiled: June 19, 2013Date of Patent: May 31, 2016Assignee: INSTITUTE OF NUCLEAR ENERGY RESEARCH ATOMIC ENERGY COUNCIL, EXECUTIVE YUANInventors: Hsin-Liang Chen, Cheng-Chang Hsieh, Deng-Lain Lin, Yan-Zheng Du, Chi-Fong Ai, Ming-Chung Yang
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Publication number: 20160142660Abstract: The present invention relates to a single chip image sensor with both visible light image and ultraviolet light detection ability and methods to implement the single chip image sensor. In an embodiment, a single chip image sensor may comprise a first plurality of sensor cells provided on a substrate, the first plurality of sensor cells each including a photo detector sensitive to visible light, and a UV coating layer provided for the first plurality of sensor cells to convert incident UV light to visible light.Type: ApplicationFiled: September 14, 2015Publication date: May 19, 2016Applicant: CISTA SYSTEM CORP.Inventors: Yanfei Shen, Guangbin Zhang (Garry), Wenhao Qiao, Jiangtao Pang, Zheng Du
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Publication number: 20140375207Abstract: A large-area plasma generating apparatus is disclosed, which includes a reaction chamber; a first electrode disposed in the reaction chamber; a second electrode parallel with the first electrode and disposed in the reaction chamber; and a discharge region formed between the first and second electrodes and a plasma can be formed therein; wherein a travelling wave or a traveling-wave-like electromagnetic field is generated via at least one of the first and second electrodes and travels from one end of the discharge region to its opposite end, so as to uniform the plasma in the discharge region.Type: ApplicationFiled: June 19, 2013Publication date: December 25, 2014Inventors: HSIN-LIANG CHEN, CHENG-CHANG HSIEH, DENG-LAIN LIN, YAN-ZHENG DU, CHI-FONG AI, MING-CHUNG YANG
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Patent number: 8896743Abstract: Embodiments of the invention describe an enclosure for an image capture system that includes an image capture unit and a solid state die to provide focusing capabilities for a lens unit of the image capture unit. The enclosure may electrically couple the solid state die to the image capture unit and/or other system circuitry. The enclosure may further serve as EMI shielding for the image capture system.Type: GrantFiled: June 8, 2011Date of Patent: November 25, 2014Assignee: OmniVision Technologies, Inc.Inventors: Zheng Du, Denis Chu, Yi-Chang Hsieh, Wei-Feng Lin, Wen-Jen Ho
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Patent number: 8878976Abstract: Embodiments of the invention describe providing image focusing capabilities for a lens unit of an image capture system by disposing a solid state die over the lens unit. The solid state die may include a plurality of electrodes to receive a voltage or electric signal to generate an electric field. The refractive index of the solid state die will change in response to the generated electric field to focus the image or scene captured by the lens unit. The solid state die is mounted to a folded flexible printed circuit board in a housing or a molded housing having electrodes on its inner wall.Type: GrantFiled: June 8, 2011Date of Patent: November 4, 2014Assignee: OmniVision Technologies, Inc.Inventors: Zheng Du, Denis Chu, Ju Gao
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Publication number: 20120315953Abstract: Embodiments of the invention describe an enclosure for an image capture system that includes an image capture unit and a solid state die to provide focusing capabilities for a lens unit of the image capture unit. The enclosure may electrically couple the solid state die to the image capture unit and/or other system circuitry. The enclosure may further serve as EMI shielding for the image capture system.Type: ApplicationFiled: June 8, 2011Publication date: December 13, 2012Inventors: Zheng Du, Denis Chu, Yi-Chang Hsieh, Wei-Feng Lin, Wen-Jen Ho
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Publication number: 20120315952Abstract: Embodiments of the invention describe providing image focusing capabilities for a lens unit of an image capture system by disposing a solid state die over the lens unit. The solid state die may include a plurality of electrodes to receive a voltage or electric signal to generate an electric field. The refractive index of the solid state die will change in response to the generated electric field to focus the image or scene captured by the lens unit. The solid state die is mounted to a folded flexible printed circuit board in a housing or a molded housing having electrodes on its inner wall.Type: ApplicationFiled: June 8, 2011Publication date: December 13, 2012Inventors: Zheng Du, Denis Chu, Ju Gao
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Publication number: 20090262869Abstract: Time variation on fading channels hinders accurate channel estimation in differential space-time modulation and deteriorates the performance. Decision-feedback differential detection is employed for block differential space-time modulation, and compared with conventional differential space-time modulation. It is observed that the proposed scheme does not suffer effective fading bandwidth expansion, as does the conventional scheme. An improved effective signal-to-noise ratio approach is proposed for analyzing the performance of the proposed scheme in time-varying flat Rayleigh fading. Theoretical analysis and simulations show the improved performance of the proposed scheme over the conventional scheme.Type: ApplicationFiled: August 31, 2007Publication date: October 22, 2009Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTAInventors: Norman C. Beaulieu, Zheng Du