Patents Assigned to Polytechnic University
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Patent number: 10043493Abstract: A drive method and system for an LED display panel. The method comprises: converting an HDMI/DVI video signal into an RGB signal; dividing the RGB signal into N independent code streams and re-ranking same; and periodically switching a direct current provided to an LED display module (30) at least between a first current I1 and a second current I2. The system comprises an FPGA controller (20), and a video signal decoder (10), a first external memory (41), a second external memory (42) and an LED display module (30) which are respectively connected to the FPGA controller (20). The FPGA controller (20) comprises N LED drive modules (231-23N) which are connected in parallel. The drive method and system can enhance the luminous efficacy of an LED, and can also conduct linear dimming on the LED.Type: GrantFiled: March 27, 2014Date of Patent: August 7, 2018Assignee: The Hong Kong Polytechnic UniversityInventors: Ka Hong Loo, Yuk Ming Lai, Chi Kong Michael Tse
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Patent number: 10014442Abstract: A vertical type light emitting diode includes a nitride semiconductor having a p-n conjunction structure with a transparent material layer formed on a p type clad layer, the transparent material layer having a refractive index different from that of the p type clad layer and having a pattern structure of mesh, punched plate, or one-dimensional grid form, etc. A reflective metal electrode layer is formed on the transparent material layer as a p-electrode. A stereoscopic pattern is formed in the transparent material layer and the p-electrode deposited, and thereby forming the pattern in the p-electrode. Depositing the p-electrode on only 10 to 70% of the upper portion of the p type clad layer in an ultraviolet ray light emitting diode such that an area where the p type clad layer is exposed is wide increases the transmittance of ultraviolet rays through an area where the p-electrode is not deposited.Type: GrantFiled: March 28, 2014Date of Patent: July 3, 2018Assignee: Korea Polytechnic University Industry Academic Cooperation FoundationInventors: Kyoung Kook Kim, Se Mi Oh
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Publication number: 20180162747Abstract: The present invention provides a method for generating hydroxyl radical and removing organic pollutants in water by utilizing an organic membrane. The inventive method generates hydroxyl radical by adopting a nitrocellulose membrane as a photocatalytic material, placing the nitrocellulose membrane in water, illuminating with the sun or a sunlamp having a wavelength above 280 nm as a light source, and causing the nitrocellulose membrane to undergo a photochemical reaction at the membrane surface, and the generation rate of hydroxyl radical can be achieved by adjusting the surface area of the membrane and a light intensity. The generated hydroxyl radical can remove phenol, bisphenol A, thiamphenicol and other typical organic pollutants in water very well.Type: ApplicationFiled: June 25, 2016Publication date: June 14, 2018Applicant: HeNan Polytechnic UniversityInventors: Chao TAI, Shao Dong ZHANG, Tong Qian ZHAO, Dang Yu SONG, Lei FENG, Yu Xiang MAO, Yong An QI, Guo Cheng ZHANG, Li Jun ZHANG, Juan WANG
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Patent number: 9920084Abstract: The invention relates to the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. In another aspect, the invention relates to compounds of formula (II) processes for making these compounds, and the use thereof in the chemical synthesis of oligonucleotides, e.g., oligoribonucleotides. The invention also relates to methods of synthesis of oligomers, including but not limited to oligopeptides, oligosaccharides and oligonucleotides, particularly oligoribonucleotides and also oligodeoxyribonucleotides, in solution systems, and ionic tag linkers for use in methods provided herein.Type: GrantFiled: August 23, 2012Date of Patent: March 20, 2018Assignees: The Royal Institution for the Advancement of Learning/McGill University, Hong Kong Polytechnic UniversityInventors: Masad J. Damha, Matthew Hassler, Tak-Hang Chan, Mallikarjuna Reddy Nandyala, Robert Alexander Donga
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Publication number: 20180068773Abstract: An apparatus for negative stiffness including one or more solenoids for generating a magnetic field. A moveable magnet is moveable relative to the one or more solenoids through the one or more solenoids. The one or more solenoids are configurable to generate an at least substantially quadratic magnetic field about an equilibrium position at which the resultant force on the moveable magnet is zero. Depending on the respective pole orientation, generating a quadratic magnetic field about an equilibrium position provides a substantially linear negative stiffness characteristic with displacement.Type: ApplicationFiled: September 7, 2016Publication date: March 8, 2018Applicant: The Hong Kong Polytechnic UniversityInventors: Songye Zhu, Xiang Shi
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Patent number: 9876807Abstract: It is described a network attack detection method. A topology analysis on network is conducted to obtain a probing path set containing at least one probing path. A first probing path contained in the probing path set is probed by using a probing pattern to obtain a performance metric of the first probing path. It is determined whether the first probing path is subjected to network attack according to the performance metric and a control performance metric.Type: GrantFiled: April 16, 2015Date of Patent: January 23, 2018Assignees: The Hong Kong Polytechnic University, Tencent Technology (Shenzhen) Company LimitedInventors: Lei Xue, Zhiwei Liu, Xianneng Zou, Jingang Hou, Xiapu Luo, Edmond W. W Chan, Pei Tu, Yuru Shao
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Patent number: 9863824Abstract: A resistance-voltage (R-V) transformation system used in dynamic strain measurement for a structure is provided. The system has single-channel (SC) circuit units each for producing a voltage corresponding to a resistance of a sensing element of a structural-strain sensing network. Each SC circuit unit has a R-V transformation module for converting the resistance into the voltage, a band-pass filter module for filtering the R-V transformation module output after a direct-current bias therein is removed, and a high-gain amplification module for amplifying the filter output. The band-pass filter module is configured such that an unwanted low-frequency component induced by resistance drift of the sensing element is removed while allowing a guided-wave signal component to pass through.Type: GrantFiled: September 19, 2016Date of Patent: January 9, 2018Assignee: The Hong Kong Polytechnic UniversityInventors: Zhongqing Su, Limin Zhou, Lei Qiu, Hao Xu, Zhihui Zeng, Menglong Liu
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Publication number: 20180006538Abstract: An electric motor comprising a stator and a rotor. The stator has at least one resonant circuit and the rotor has at least one resonant circuit rotatable with the rotor relative to at least one stator resonant circuit such that at least one rotor resonant circuit is angularly displaceable relative to at least one stator resonant circuit. At least one stator resonant circuit and at least one rotor resonant circuit are configured to have at least substantially the same self-resonant frequency. The electric motor uses magnetic resonant coupling between one or more stator resonant circuits and one or more rotor resonant circuits to produce usable torque.Type: ApplicationFiled: June 30, 2016Publication date: January 4, 2018Applicant: The Hong Kong Polytechnic UniversityInventors: Ming LIU, Hon Lung CHAN, Ka Wing CHAN, Junwei LIU, Wenzheng XU
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Patent number: 9829722Abstract: A method for retarding the progression of myopia in a human eye, the method comprising: providing (41) a concentric annular multi-zone refractive lens including: at least one correcting zone of optical power for correcting (42) refractive error, and at least one defocusing zone for projecting (43) at least one non-homogenous defocused image in front of at least a part of retina to inhibit myopic eye growth, the at least one defocusing zone having at least one less negative power; wherein the correcting and defocusing zones are alternated (45) in the lens and the zones are connected (46) to each other through integrated progressive transition curves.Type: GrantFiled: December 23, 2014Date of Patent: November 28, 2017Assignee: The Hong Kong Polytechnic UniversityInventors: Yan Yin Tse, Chi Ho To, Siu Yin Lam
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Patent number: 9825650Abstract: This invention provides a cyclically-coupled (CC-) quasi-cyclic (QC-) low-density parity-check (LDPC) code and its decoder architecture. The essence of the invention is to introduce the convolutional nature to a plurality of individual block codes internally so as to form a resultant block code with a prolonged code length while slightly increasing the hardware complexity in decoder realization. The CC-QC-LDPC code is formed by cyclically coupling a plurality of sub-codes each being a QC-LDPC code such that overlapping of some variable nodes between two consecutive sub-codes results. The decoder comprises plural sub-decoders each configured to decode the channel messages for one sub-code. The sub-decoders are arranged in a ring shape such that an individual sub-decoder is configured to communicate edge messages with two neighboring sub-decoders adjacent to said individual sub-decoder in the decoding of the channel messages.Type: GrantFiled: August 13, 2015Date of Patent: November 21, 2017Assignee: The Hong Kong Polytechnic UniversityInventors: Chiu-Wing Sham, Jianfeng Fan, Wai Man Tam, Qing Lu, Chung Ming Lau
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Patent number: 9787098Abstract: An energy storage system (ESS) includes a battery pack, a power converter, a battery management system (BMS) configured to control and monitor, in real time, the battery pack, a load power controller coupled to the battery pack and an external power source, connected to loads, and an integrated controller configured to control an operation of each component, determine an exclusive supply initiation time based on energy management schedule information including the exclusive supply initiation time, an exclusive supply termination time, and power supply timing information, control power to be supplied to the loads exclusively using power of the battery pack at the exclusive supply initiation time, and, when a current residual charge amount of the battery pack is at least one residual charge amount in the power supply timing information, control power supply to one of the loads set to correspond to the residual charge amount to be cut.Type: GrantFiled: February 4, 2016Date of Patent: October 10, 2017Assignee: Korean Polytechnic University Industry Academic Cooperation FoundationInventors: Jinku Choi, Chang-Woo Lee
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Patent number: 9754731Abstract: A method of producing an electrode of a dye-sensitized solar cell includes dispersing semiconductor nanoparticles on a transparent electrically conductive substrate, dispersing semiconductor nanofibers on the semiconductor nanoparticle layer, adsorbing onto all sides of the semiconductor nanofibers a first light absorption material, thereby sensitizing the semiconductor nanofibers, wherein the light absorption material has a first light absorption bandwidth, and depositing a second light absorption material in contact with and forming respective shells on the respective semiconductor nanofibers on which the first light absorption material is adsorbed, wherein the second light absorption material has a second light absorption bandwidth complementary to the first light absorption bandwidth.Type: GrantFiled: August 25, 2016Date of Patent: September 5, 2017Assignee: The Hong Kong Polytechnic UniversityInventors: Wallace Woon-fong Leung, Lijun Yang
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Patent number: 9749745Abstract: A differential microphone array includes a number (M) of microphone sensors for converting sound to a number of electrical signals, and a processor, operably coupled to the microphone sensors, to specify a target differential order (N) for the differential microphone array, and wherein M>N+1, specify a steering matrix D comprising N+1 steering vectors, calculate a respective one of a plurality of linearly specify a steering matrix D comprising N+1 steering vectors-constrained minimum variance filters based on the steering matrix, apply the respective one of the plurality of linearly-constrained minimum variance filters to a respective one of the electrical signals to calculate a respective frequency response of the electrical signals, wherein the respective frequency response comprises a plurality of components associated with a plurality of subbands, and sum the frequency responses of the electrical signals with respect to each subband to calculate an estimated frequency spectrum of the sound.Type: GrantFiled: December 28, 2015Date of Patent: August 29, 2017Assignee: Northwestern Polytechnical UniversityInventors: Jingdong Chen, Jacob Benesty
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Patent number: 9734165Abstract: The present invention provides a new method and a device for the contactless human identification using biometrics images. The present invention develops a robust feature extraction algorithm to recover three-dimensional (3D) shape information from biometrics images. Further, it provides significantly improved performance than what is possible from the state-of-art methods, adding practicality for real applications on mobile platform, smartphones, and also as add-on system for conventional fingerprint system. The present invention's unique advantages are based on its computational simplicity, efficient matching and requiring least storage. Experiments were conducted to confirm very high accuracy and reliability on a number of biometric modalities including iris, palmprint, and finger knuckle images.Type: GrantFiled: July 14, 2015Date of Patent: August 15, 2017Assignee: The Hong Kong Polytechnic UniversityInventors: Ajay Kumar, Qian Zheng
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Prodrug of green tea epigallocatechin-3-gallate (Pro-EGCG) for use in the treatment of endometriosis
Patent number: 9713603Abstract: Method of treating endometriosis and related indications, comprising the administration of Pro-EGCG, a synthetic and derivative product of epigallocatechin-3-gallate [(?)-EGCG]. Use of Pro-EGCG in the manufacture of a medicament for treating endometriosis and related indications. Pro-EGCG for use in the treatment of endometriosis and related indications.Type: GrantFiled: August 20, 2013Date of Patent: July 25, 2017Assignees: The Hong Kong Polytechnic University, The Chinese University of Hong KongInventors: Tak-Hang Chan, Chi-Chiu Wang -
Patent number: 9697308Abstract: A method for generating an EMF model includes establishing a time-domain finite data model associated with an electric device representing the electric device in the time-domain; utilizing the time domain finite data model, determining excitations representing an electrical characteristic of an electrical components of the electric device; and generating an EMF model by processing the excitations with a transformation routine determining an approximate representation of an EMF generated by the electric device. A system for generating the EMF model includes a modelling module establish a time-domain finite data model associated with the electric device and d representing the electric device in the time-domain. The modelling module utilizes the time domain finite data model to determine excitations representing an electrical characteristic of an electrical component of the electric device.Type: GrantFiled: April 12, 2013Date of Patent: July 4, 2017Assignee: The Hong Kong Polytechnic University Innovation and Technology Development OfficeInventors: Weinong Fu, Xiu Zhang, Siu-Iau Ho
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Patent number: 9694350Abstract: This invention provides a catalyst comprising a new form of ZnFe2O4 spinel nanoparticles, and a method for preparing same. The catalyst is useful for catalyzing the esterification of fatty acids or transesterification of triglycerides, wherein the reaction rate and conversion can be enhanced by free fatty acids.Type: GrantFiled: March 23, 2016Date of Patent: July 4, 2017Assignee: The Hong Kong Polytechnic UniversityInventors: Ka Fu Yung, Wing Tak Wong, Tsz Lung Kwong
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Patent number: 9655174Abstract: The present invention discloses a current-source-output light-emitting-diode (LED) driver based on LCLC circuit to provide a constant output current regardless of variations in LED parameters. In the LCLC circuit, the number of additional capacitors is scalable with the number of LED strings for current balancing. Moreover, the input impedance of the improved LCLC circuit is designed to be resistive at the operating frequency to minimize reactive power. The conventional duty cycle control can easily incorporate zero-voltage-switching (ZVS).Type: GrantFiled: July 14, 2015Date of Patent: May 16, 2017Assignee: The Hong Kong Polytechnic UniversityInventors: Xiaohui Qu, Siu-Chung Wong, Chi Kong Tse
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Patent number: 9649533Abstract: A muscular strength enhancing robot to be driven by an intention of a user and a method of driving the robot are disclosed. The robot includes an actuator attached to a portion of a body of the user and configured to be actuated by enhancing a muscular strength, an encoder connected to the actuator and configured to measure an actual velocity at which the actuator moves, a force or torque sensor configured to measure an intensity of a force to be applied, an admittance modeling module configured to calculate a target velocity using the intensity of the force, and a proportional integral derivative (PID) control module configured to control actuation of the actuator in proportion to a velocity difference between the target velocity and the actual velocity, control the actuation by a cumulative value of the velocity difference, and control the actuation by a difference between a previous and a current velocity difference.Type: GrantFiled: November 25, 2015Date of Patent: May 16, 2017Assignee: Korea Polytechnic University Industry Academic Corporation FoundationInventors: Eung-Hyuk Lee, Jee-Hwan Ryu, Su-Hong Eom, Seoung-Jun Lee
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Publication number: 20170130365Abstract: The present invention discloses a nanostructured materials processing and manufacturing apparatus comprising a coaxial needle, a rotating disk, two spring pushers, and a electric power source with sufficient voltage, The coaxial needle, which is capable of simultaneously delivering two different types of solutions, is connected to a rotating shaft coupler and tilted at an angle, preferably 2 to 5 degrees, with respect to the vertical direction relative to the surface of the rotating disk. A mechanical action to the solutions is added by the rotation of the slightly tilted coaxial needle. The coaxial needle is electrically connected to the positive electrode of a electric power source by a pad pushed by a spring pusher, which enables the solutions in the coaxial needle to be electrified. The rotating disk is connected to the negative electrode of the power source. Due to both mechanical and electric actions, the apparatus performs electrospraying and/or electrospinning functions.Type: ApplicationFiled: November 10, 2015Publication date: May 11, 2017Applicant: California State Polytechnic University, PomonaInventor: Yong X. Gan