Patents by Inventor Xinyu Fan
Xinyu Fan 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: 11664790Abstract: A random number generator that includes control circuit, an oscillation circuit, an oscillation detection circuit and a latch circuit is introduced. The control circuit sweeps a configuration of a bias control signal among a plurality of configurations. The oscillation circuit generates an oscillation signal based on the configuration of the bias control signal. The oscillation detection circuit detects an onset of the oscillation signal, and outputs a lock signal. The latch circuit latches the oscillation signal according to a trigger signal to output a random number, wherein the trigger signal is asserted after the lock signal is outputted, and the configuration of bias control signal is locked after the lock signal is outputted. A method for generating a random number and an operation method of a random number generator are also introduced.Type: GrantFiled: May 3, 2022Date of Patent: May 30, 2023Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Win-San Khwa, Jui-Jen Wu, Jen-Chieh Liu, Elia Ambrosi, Xinyu Bao, Meng-Fan Chang
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Publication number: 20220115906Abstract: A self-powered wireless keyboard by modifying the structure of a traditional membrane keyboard having a volcanic crater structure. Not damaging the original membrane keyboard structure, a micro magnet core is installed inside a cylindrical protrusion block under the key cap as a mover of the induction power generation device, and an induction coil is wound in a key slot of the keyboard base as the stator of the induction power generation device. In this way, when each key is pressed, it will produce induction current. A layer of flexible solar cell can be laid on the upper surface of the key, which can generate electricity by collecting the light energy in the surrounding environment during the time of daily illumination.Type: ApplicationFiled: September 26, 2021Publication date: April 14, 2022Inventors: Fang DENG, Yanxin JI, Xinyu FAN, Yeyun CAI, Chengwei MI, Feng GAO, Jie CHEN, Lihua DOU
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Publication number: 20210394662Abstract: An intelligent transfer vehicle for shared bicycles includes: a cockpit, a vehicle body platform, shared bicycle parking racks, a wheeled device, a power source unit, and a vehicle-mounted unit. The intelligent transfer vehicle combines the function of a parking platform and a transfer platform into one, and can have three transfer modes to reduce reliance on a dispatch center, save costs and improve transfer efficiency.Type: ApplicationFiled: May 28, 2021Publication date: December 23, 2021Inventors: Fang DENG, Xiang SHI, Wenjie CHEN, Xiaobo WU, Xinyu FAN, Lele ZHANG, Li LIANG, Xin GAO, Xianghu YUE, Ziman YE, Feng GAO
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Publication number: 20210135625Abstract: A photovoltaic array fault diagnosis method based on composite information is provided. The method includes: collecting and preprocessing composite information data of photovoltaic array working state, including image data and text data; using the image data of photovoltaic array working state to train a pre-established fault classification model of deep convolutional neural network, to thereby obtain an image fault classification model; using the text data of photovoltaic array working state to train a pre-established fault classification model based on a support vector machine, to thereby obtain a text fault classification model; fusing the image fault classification model and the text fault classification model by logistic regression algorithm to obtain a fusion model, and training the fusion model using the composite information data of photovoltaic array working state to thereby obtain the photovoltaic array fault diagnosis model.Type: ApplicationFiled: November 9, 2020Publication date: May 6, 2021Inventors: Fang DENG, Zelang LIANG, Ning DING, Xinyu FAN, Xin GAO, Yuyun CAI, Jie CHEN
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Patent number: 10989587Abstract: A distributed fibre sensing system and a vibration detection and positioning method therefor are disclosed. The system comprises: a signal generating module, a light source module, an optical frequency comb generating module, a frequency sweeping and pulse generating module, an optical circulator, a sensing fibre, an interference module, a photoelectric conversion module and a detection and position module. The method comprises: obtaining a plurality of Rayleigh backscattering signals of the sensing fibre; performing a fading elimination processing on the Rayleigh backscattering signals, thereby obtaining a plurality of averaged Rayleigh backscattering signals of non-interference fading and polarization fading; performing a phase processing on the averaged Rayleigh backscattering signals, thereby obtaining phase variance curves; and determining a vibration point according to variances in the phase variance curves, and finally obtaining a position and a vibration waveform of the vibration point.Type: GrantFiled: August 26, 2016Date of Patent: April 27, 2021Assignees: SHANGHAI JIAOTONG UNIVERSITY, NEUBREX CO., LTD.Inventors: Zuyuan He, Qingwen Liu, Dian Chen, Xinyu Fan
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Publication number: 20200182685Abstract: A distributed fibre sensing system and a vibration detection and positioning method therefor are disclosed. The system comprises: a signal generating module, a light source module, an optical frequency comb generating module, a frequency sweeping and pulse generating module, an optical circulator, a sensing fibre, an interference module, a photoelectric conversion module and a detection and position module. The method comprises: obtaining a plurality of Rayleigh backscattering signals of the sensing fibre; performing a fading elimination processing on the Rayleigh backscattering signals, thereby obtaining a plurality of averaged Rayleigh backscattering signals of non-interference fading and polarization fading; performing a phase processing on the averaged Rayleigh backscattering signals, thereby obtaining phase variance curves; and determining a vibration point according to variances in the phase variance curves, and finally obtaining a position and a vibration waveform of the vibration point.Type: ApplicationFiled: August 26, 2016Publication date: June 11, 2020Inventors: Zuyuan HE, Qingwen LIU, Dian CHEN, Xinyu FAN
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Patent number: 10461850Abstract: Frequency synthesis-based optical frequency domain reflectometry method and system are disclosed. The method is to implement optical frequency reflectometry and comprises: performing an electro-optic modulation and an acousto-optic modulation on a local light to obtain an optical pulse; inputting the optical pulse as a detection pulse optical signal to a test optical fiber; and detecting an obtained Rayleigh backscattered optical signal under coherent detection with the local light, and then performing a photoelectric conversion and a demodulation, wherein: the electro-optic modulation is performed by using a single frequency signal; the acousto-optic modulation is performed by using a pulse signal; and the optical pulse is obtained by simultaneously sweeping multiple frequency components of an optical comb signal which is obtained by the electro-optic modulation.Type: GrantFiled: January 5, 2016Date of Patent: October 29, 2019Assignees: SHANGHAI JIAOTONG UNIVERSITY, NEUBREX CO., LTD.Inventors: Zuyuan He, Qingwen Liu, Xinyu Fan, Dian Chen
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Publication number: 20190013862Abstract: Frequency synthesis-based optical frequency domain reflectometry method and system are disclosed. The method is to implement optical frequency reflectometry and comprises: performing an electro-optic modulation and an acousto-optic modulation on a local light to obtain an optical pulse; inputting the optical pulse as a detection pulse optical signal to a test optical fiber; and detecting an obtained Rayleigh backscattered optical signal under coherent detection with the local light, and then performing a photoelectric conversion and a demodulation, wherein: the electro-optic modulation is performed by using a single frequency signal; the acousto-optic modulation is performed by using a pulse signal; and the optical pulse is obtained by simultaneously sweeping multiple frequency components of an optical comb signal which is obtained by the electro-optic modulation.Type: ApplicationFiled: January 5, 2016Publication date: January 10, 2019Applicants: SHANGHAI JIAOTONG UNIVERSITY, NEUBREX CO., LTD.Inventors: Zuyuan HE, Qingwen LIU, Xinyu FAN, Dian CHEN
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Patent number: 8928868Abstract: A test pulse is generated from a first and a second test light beam pulse with different wavelengths, with a predetermined time difference applied between the first and the second test light beam pulse. A circulator inputs the test pulse to a trunk fiber of a measurement target fiber line. A reflected light is extracted which is output from an input end of the trunk fiber. A filter extracts stimulated Brillouin backscattered light. A receiver receives and converts the scattered light into an electrical signal. A processing device carries out the signal to determine in which of N branched fibers the stimulated Brillouin scattered light is generated, while varying a time difference between the first and the second test pulse.Type: GrantFiled: May 31, 2012Date of Patent: January 6, 2015Assignee: Nippon Telegraph and Telephone CorporationInventors: Hiroshi Takahashi, Fumihiko Ito, Xinyu Fan, Yusuke Koshikiya
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Publication number: 20140098362Abstract: A test pulse is generated from a first and a second test light beam pulse with different wavelengths, with a predetermined time difference applied between the first and the second test light beam pulse. A circulator inputs the test pulse to a trunk fiber of a measurement target fiber line. A reflected light is extracted which is output from an input end of the trunk fiber. A filter extracts stimulated Brillouin backscattered light. A receiver receives and converts the scattered light into an electrical signal. A processing device carries out the signal to determine in which of N branched fibers the stimulated Brillouin scattered light is generated, while varying a time difference between the first and the second test pulse.Type: ApplicationFiled: May 31, 2012Publication date: April 10, 2014Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hiroshi Takahashi, Fumihiko Ito, Xinyu Fan, Yusuke Koshikiya
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Patent number: 8149419Abstract: An object of the invention is to provide an optical reflectometry and an optical reflectometer, in which accurate measurement can be performed irrespective of a measurement distance. In the optical reflectometry and optical reflectometer according to the invention, in which a distribution of backscattered light intensity from a measurement target in an optical propagation direction is measured using Optical Frequency Domain Reflectometry (OFDR), a coherence monitor unit 12 that monitors a coherence property of a frequency sweep light source 1 is provided, and measurement result of a measuring unit 11 is corrected based on the monitor result of the coherence monitor unit 12.Type: GrantFiled: February 21, 2008Date of Patent: April 3, 2012Assignee: Nippon Telegraph and Telephone CorporationInventors: Xinyu Fan, Fumihiko Ito, Yusuke Koshikiya
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Publication number: 20100249807Abstract: A surgical purse-string suturing instrument comprises an upper jaw, jaw handle, grip, and a lower jaw, jaw handle, grip, wherein the jaws (1) and the corresponding jaw handles (3) are arranged in shape of āLā so that the doctor is able to clearly observe the placement of the tissues on the jaws (1) directly from one side of the jaw handle (3); in order to adapt to tissues of different widths, gaps (7), peaks (8) and valleys (9), or alternately arranged teeth (10) are disposed on the surfaces of the staple cartridges (2); by employing limiting rods (11) and anti-exceeding boss (13), the exceeding of tissues during the process of purse-string suturing can be effectively prevented so that the sutured purse-string has a complete shape.Type: ApplicationFiled: June 26, 2008Publication date: September 30, 2010Applicant: SUZHOU TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO., LTD.Inventors: Wangdong Chen, Min Sun, Xinyu Fan, Jing Zhou, Kezhan Sun
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Publication number: 20100097615Abstract: An object of the invention is to provide an optical reflectometry and an optical reflectometer, in which accurate measurement can be performed irrespective of a measurement distance. In the optical reflectometry and optical reflectometer according to the invention, in which a distribution of backscattered light intensity from a measurement target in an optical propagation direction is measured using Optical Frequency Domain Reflectometry (OFDR), a coherence monitor unit 12 that monitors a coherence property of a frequency sweep light source 1 is provided, and measurement result of a measuring unit 11 is corrected based on the monitor result of the coherence monitor unit 12.Type: ApplicationFiled: February 21, 2008Publication date: April 22, 2010Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Xinyu Fan, Fumihiko Ito, Yusuke Koshikiya