Patents by Inventor Li Du
Li 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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Patent number: 11906240Abstract: A refrigerator includes a receiving chamber and a drawer movably received in the receiving chamber. The drawer is at a first location when it is closed. The refrigerator further includes a first sensor that is fixed to the drawer or a wall of the receiving chamber. The first sensor is configured to detect when the drawer reaches a second location. The first and second locations are spaced apart by a spacing distance.Type: GrantFiled: November 27, 2019Date of Patent: February 20, 2024Assignee: BSH Hausgeraete GmbHInventors: Li Du, Jing Hong, Yu Xia
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Patent number: 11566235Abstract: The present invention discloses a mutant of cyclodextrin glycosyltransferase and belongs to the fields of gene engineering and enzyme engineering. According to the present invention, a mutant having higher disproportionation activity of cyclodextrin glycosyltransferase is obtained by mutating the cyclodextrin glycosyltransferase. The disproportionation activity of enzymes of mutants V6D, S90G, T168A, T171A, T383A, G608A, and V6D/S90G/T168A/T171A/T383A/G608A, is respectively 1.89 times, 1.21 times, 1.21 times, 1.22 times, 1.32 times, 2.03 times, and 3.16 times that of the wild type enzyme in shake flask fermentations.Type: GrantFiled: April 18, 2019Date of Patent: January 31, 2023Assignee: Jiangnan UniversityInventors: Jing Wu, Lingqia Su, Li Du
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Patent number: 11521051Abstract: A neural network computing engine having an array of charge-trap-transistor (CTT) elements which are utilized as analog multipliers with all weight values preprogrammed into each CTT element as a CTT threshold voltage, with multiplicator values received from the neural network inference mode. The CTT elements perform computations of a fully connected (FC) neural network with each CTT element representing a neuron. Row resistors for each row of CTT element sum output currents as partial summation results. Counted pulse generators write weight values under control of a pulse generator controller. A sequential analog fabric (SAF) feeds multiple drain voltages in parallel to the CTT array to enable parallel analog computations of neurons. Partial summation results are read by an analog-to-digital converter (ADC).Type: GrantFiled: May 17, 2020Date of Patent: December 6, 2022Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Mau-Chung Frank Chang, Yuan Du, Li Du
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Publication number: 20220309171Abstract: A set of endpoint security events that reflect known security issues is defined and collected. A corresponding set of endpoint security actions to protect the endpoints is defined and implemented. Machine learning is used to build a data model to reflect the relation between endpoint security events and endpoint security actions. The data model is able to predict the security actions directly from the security events, without the intermediate step of determining a threat level. An endpoint application is developed to use the data model directly and apply the security actions whenever security events occur.Type: ApplicationFiled: March 25, 2021Publication date: September 29, 2022Inventors: Li Du, Yunhui Song, Zhenyu Huang, Bo Lei
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Patent number: 11441837Abstract: A refrigerator includes a cabinet, a door, a storage container or movable shelf, and a video recording module. The cabinet includes a storage compartment, a pair of oppositely disposed side walls, and a connecting portion that extends along a lateral direction of the cabinet and that is connected to the pair of side walls, the connecting portion having a front engaging face. The door is configured to cover the storage compartment and is connected to the front engaging face when closed. The storage container or movable shelf is located in the storage compartment and may be at least partially pulled out of the storage compartment. The video recording module or an illumination module is disposed at the connecting portion, faces toward a front of the cabinet, and is inclined downward to record a video of/illuminate the storage container or movable shelf that is at least partially pulled out of the storage compartment.Type: GrantFiled: November 4, 2019Date of Patent: September 13, 2022Assignee: BSH Hausgeraete GmbHInventors: Li Du, Jing Hong, Yu Xia
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Publication number: 20220065760Abstract: Disclosed are a gas purification device, and an apparatus and a method for measuring isotopes of noble gases. The gas purification device includes a housing and a purification mechanism. The housing is provided with a reaction chamber. The reaction chamber is in a vacuum state and is configured to hold a gas sample. The purification mechanism is arranged on the housing and is provided with a cavity. The cavity in the purification mechanism is communicated with the reaction chamber. The purification mechanism is configured to purify the gas sample in the reaction chamber to obtain a purified gas.Type: ApplicationFiled: November 11, 2021Publication date: March 3, 2022Inventors: Chunhui CAO, Liwu LI, Huanhuan ZHAO, Zhongping LI, Li DU
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Patent number: 11175822Abstract: A low-cost single-layer mobile touch-screen is disclosed, including a highly sensitive capacitive sensing circuit, and a corresponding finger 3D position estimation and gesture recognition algorithms compatible with mobile device platforms and that can be readily programmed into the mobile device's application processor.Type: GrantFiled: November 8, 2018Date of Patent: November 16, 2021Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Mau-Chung Frank Chang, Li Du, Chunchen Liu, Yan Zhang
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Patent number: 11126653Abstract: Described is a system and method for enabling visual search for information. With each selection of an object included in an image, additional images that include visually similar objects are determined and presented to the user.Type: GrantFiled: September 22, 2017Date of Patent: September 21, 2021Assignee: Pinterest, Inc.Inventors: Andrew Huan Zhai, Dmitry Olegovich Kislyuk, Maesen Churchill, Yue Li Du, Zhefei Yu, Kelei Xu
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Patent number: 11085829Abstract: An infrared temperature-measurement probe, including: a probe housing; a reflector; and a reflector adjusting mechanism. The probe housing includes an inner wall, an outer wall, a cooling channel sandwiched between the inner wall and the outer wall, a chamber surrounded by the inner wall, and a light transmission hole communicating with the chamber. The reflector includes a mirror and a mirror frame. The reflector adjusting mechanism includes a motion controller, a drive coupling, and three control rods. The reflector and the three control rods are disposed in the chamber of the probe housing. The motion controller is disposed outside the chamber of the probe housing. The drive coupling is disposed between the motion controller and the three control rods, and the motion controller is adapted to move each of the three control rods via the drive coupling. The mirror is imbedded in and is supported by the mirror frame.Type: GrantFiled: April 10, 2018Date of Patent: August 10, 2021Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINAInventors: Chao Wang, Yang Yang, Jing Jiang, Chengui Zhang, Zezhan Zhang, Fei Wang, Ying Duan, Jun Hu, Yueming Wang, Hongchuan Jiang, Huiyuan Geng, Jiexiong Ding, Li Du
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Patent number: 10943166Abstract: A pooling operation method for a convolutional neural network includes the following steps of: reading multiple new data in at least one current column of a pooling window; performing a first pooling operation with the new data to generate at least a current column pooling result; storing the current column pooling result in a buffer; and performing a second pooling operation with the current column pooling result and at least a preceding column pooling result stored in the buffer to generate a pooling result of the pooling window. The first pooling operation and the second pooling operation are forward max pooling operations.Type: GrantFiled: November 2, 2017Date of Patent: March 9, 2021Assignee: Kneron, Inc.Inventors: Yuan Du, Li Du, Chun-Chen Liu
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Patent number: 10936937Abstract: A convolution operation device includes a convolution calculation module, a memory and a buffer device. The convolution calculation module has a plurality of convolution units, and each convolution unit performs a convolution operation according to a filter and a plurality of current data, and leaves a part of the current data after the convolution operation. The buffer device is coupled to the memory and the convolution calculation module for retrieving a plurality of new data from the memory and inputting the new data to each of the convolution units. The new data are not a duplicate of the current data. A convolution operation method is also disclosed.Type: GrantFiled: November 2, 2017Date of Patent: March 2, 2021Assignee: KNERON, INC.Inventors: Li Du, Yuan Du, Chun-Chen Liu
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Publication number: 20210042610Abstract: A system and method for computing a sparse neural network having a plurality of output layers, each of which has a neuron value. Processing engines (PEs) each have a local memory for storing neurons for use with different weight values in a following cycle. A multiplexer selects between the input neuron or the output of the memory. Output from the multiplexor is received along with a weight input to a multiplier whose output is directed to an integrator. A decomposition technique performs a network computation through the use of intermediate neurons when the input neuron is larger than the local memory capacity, and provides data reuse by reusing neurons stored in local memory. Neural systems can be implemented using a neural index to address each of multiple PEs and a parallel-serial first-in-first-out (FIFO) to serially store values in main memory.Type: ApplicationFiled: August 17, 2020Publication date: February 11, 2021Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Mau-Chung Frank Chang, Li Du, Yuan Du
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Publication number: 20200364548Abstract: A neural network computing engine having an array of charge-trap-transistor (CTT) elements which are utilized as analog multipliers with all weight values preprogrammed into each CTT element as a CTT threshold voltage, with multiplicator values received from the neural network inference mode. The CTT elements perform computations of a fully connected (FC) neural network with each CTT element representing a neuron. Row resistors for each row of CTT element sum output currents as partial summation results. Counted pulse generators write weight values under control of a pulse generator controller. A sequential analog fabric (SAF) feeds multiple drain voltages in parallel to the CTT array to enable parallel analog computations of neurons. Partial summation results are read by an analog-to-digital converter (ADC).Type: ApplicationFiled: May 17, 2020Publication date: November 19, 2020Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Mau-Chung Frank Chang, Yuan Du, Li Du
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Patent number: 10796443Abstract: An image depth decoder includes an NIR image buffer, a reference image ring buffer and a pattern matching engine. The NIR image buffer stores an NIR image inputted by a stream. The reference image ring buffer stores a reference image inputted by a stream. The pattern matching engine is coupled to the NIR image buffer and the reference image ring buffer, and performs a depth computation according to the NIR image and the reference image to output at least one depth value.Type: GrantFiled: October 17, 2018Date of Patent: October 6, 2020Assignee: Kneron, Inc.Inventors: Ming-Zhe Jiang, Yuan Du, Li Du, Jie Wu, Jun-Jie Su
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Patent number: 10746604Abstract: An apparatus for measuring temperature of turbine blades, including: a radiation collection device, a data processing module; a master control unit (MCU); a calibration module; and a motion servo. The radiation collection device includes a scan reflector, a collimator lens, a first dichroic mirror, a first focus lens, a visible and near-infrared (VNIR) detector, a second dichroic mirror, a second focus lens, a short-wave infrared (SWIR) detector, a third focus lens, and a medium-wave infrared (MWIR) detector. The calibration module includes a calibration reflection mirror and a blackbody furnace. The scan reflector, the collimator lens, the first dichroic mirror, the second dichroic mirror, the third focus lens, and the MWIR detector are disposed successively along a first optical axis; the first dichroic mirror, the first focus lens, and the VNIR detector are disposed successively along a second optical axis that is perpendicular to the first optical axis.Type: GrantFiled: April 9, 2018Date of Patent: August 18, 2020Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINAInventors: Chao Wang, Zezhan Zhang, Fei Wang, Chengui Zhang, Jun Hu, Yang Yang, Jing Jiang, Hongchuan Jiang, Yueming Wang, Yuhua Cheng, Jiexiong Ding, Li Du, Houjun Wang
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Publication number: 20200181585Abstract: The present invention discloses a mutant of cyclodextrin glycosyltransferase and belongs to the fields of gene engineering and enzyme engineering. According to the present invention, a mutant having higher disproportionation activity of cyclodextrin glycosyltransferase is obtained by mutating the cyclodextrin glycosyltransferase. The disproportionation activity of enzymes of mutants V6D, S90G, T168A, T171A, T383A, G608A and V6D/S90G/T168A/T171A/T383A/G608A is respectively 1.89 times, 1.21 times, 1.21 times, 1.22 times, 1.32 times, 2.03 times and 3.16 times that of the wild enzyme in shake flask fermentations. The present invention has certain significance for the industrial production of cyclodextrin glycosyltransferase, and improves the application potential of the enzyme in food, medicine and chemical industries.Type: ApplicationFiled: April 18, 2019Publication date: June 11, 2020Inventors: Jing Wu, Lingqia Su, Li Du
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Publication number: 20200173717Abstract: A refrigerator includes a cabinet, a door, a storage container or movable shelf, and a video recording module. The cabinet includes a storage compartment, a pair of oppositely disposed side walls, and a connecting portion that extends along a lateral direction of the cabinet and that is connected to the pair of side walls, the connecting portion having a front engaging face. The door is configured to cover the storage compartment and is connected to the front engaging face when closed. The storage container or movable shelf is located in the storage compartment and may be at least partially pulled out of the storage compartment. The video recording module or an illumination module is disposed at the connecting portion, faces toward a front of the cabinet, and is inclined downward to record a video of/illuminate the storage container or movable shelf that is at least partially pulled out of the storage compartment.Type: ApplicationFiled: November 4, 2019Publication date: June 4, 2020Inventors: LI DU, JING HONG, YU XIA
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Publication number: 20200173714Abstract: A refrigerator includes a receiving chamber and a drawer movably received in the receiving chamber. The drawer is at a first location when it is closed. The refrigerator further includes a first sensor that is fixed to the drawer or a wall of the receiving chamber. The first sensor is configured to detect when the drawer reaches a second location. The first and second locations are spaced apart by a spacing distance.Type: ApplicationFiled: November 27, 2019Publication date: June 4, 2020Inventors: LI DU, JING HONG, YU XIA
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Patent number: 10670464Abstract: A method of collecting radiation information of a turbine blade, the method including: 1) collecting a radiated light from the surface of the turbine blade, analyzing the radiated light using a spectrometer to calculate compositions and corresponding concentrations of combustion gas; 2) calculating an absorption coefficient of the combustion gas at different concentrations; 3) calculating a total absorption rate of the combustion gas at different radiation wavelengths under different concentrations of component gases; 4) obtaining a relationship between the radiation and a wavelength; 5) finding at least 3 bands with a least gas absorption rate; 6) calculating a distance between a wavelength of a strongest radiation point of the turbine blade and the center wavelength, and selecting three central wavelengths closest to the wavelength with the strongest radiation; and 7) acquiring radiation data of the turbine blade in the windows obtained in 6).Type: GrantFiled: January 14, 2018Date of Patent: June 2, 2020Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINAInventors: Chao Wang, Ying Duan, Jun Hu, Zezhan Zhang, Yang Yang, Xueke Gou, Fei Wang, Jing Jiang, Jinguang Lv, Yueming Wang, Hongchuan Jiang, Li Du, Jiexiong Ding, Jingqiu Liang, Xianfu Liu, Xiaojiang Shi, Bing Xiong
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Publication number: 20200126245Abstract: An image depth decoder includes an NIR image buffer, a reference image ring buffer and a pattern matching engine. The NIR image buffer stores an NIR image inputted by a stream. The reference image ring buffer stores a reference image inputted by a stream. The pattern matching engine is coupled to the NIR image buffer and the reference image ring buffer, and performs a depth computation according to the NIR image and the reference image to output at least one depth value.Type: ApplicationFiled: October 17, 2018Publication date: April 23, 2020Inventors: Ming-Zhe JIANG, Yuan DU, Li DU, Jie WU, Jun-Jie SU