Patents by Inventor Yuming Feng
Yuming Feng 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: 11728726Abstract: The present disclosure relates to a frequency modulation device, a switching power supply and a frequency modulation method thereof. The device includes: a waveform generation unit (10) configured to generate a periodic signal required for performing frequency modulation on a clock signal of a switching power supply to be controlled; a frequency modulation unit (20) configured to perform voltage-current conversion and arithmetic processing based on the periodic signal to obtain a frequency modulation current required for performing the frequency modulation on the clock signal of the switching power supply to be controlled; and an RC oscillation unit (30) configured to perform RC oscillation processing based on the frequency modulation current to obtain a frequency oscillation signal as the clock signal of the switching power supply to be controlled.Type: GrantFiled: September 30, 2019Date of Patent: August 15, 2023Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAIInventors: Yuming Feng, Huiping Yin, Yuhua Xie, Liang Zhang, Suibiao Huang, Xinchao Peng, Yijun Xu, Jing Wang
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Patent number: 11441050Abstract: The present invention relates to a shielding filler, a shielding coating comprising the same, a preparation method and a use thereof. The shielding filler adopts melamine sponge as a carrier and surfaces thereof are covered with FeOx/graphene. The electromagnetic shielding coating is formed by mixing a component A and a component B in a molar ratio of (—OH)A:(—NCO)B=1:1, in which component A comprises fluorocarbon resin, elastic polyester resin, an electromagnetic filler, an auxiliary agent and a mixing solvent, and component B is isocyanate. The shielding filler of the present invention has a sponge-like macroporous structure, the pore wall surfaces of which are covered with ferrite and graphene, and the shielding filler has excellent electromagnetic shielding performance due to the electrical loss and magnetic loss. The obtained electromagnetic shielding coating layer is electrically conductive and magnetically inductive and has a broad electromagnetic shielding response frequency band.Type: GrantFiled: October 11, 2018Date of Patent: September 13, 2022Assignee: CRRC QINGDAO SIFANG CO., LTD.Inventors: Lin Sun, Yue Xu, Yuming Feng, Peng Lin, Sansan Ding
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Publication number: 20220037996Abstract: The present disclosure relates to a frequency modulation device, a switching power supply and a frequency modulation method thereof. The device includes: a waveform generation unit (10) configured to generate a periodic signal required for performing frequency modulation on a clock signal of a switching power supply to be controlled; a frequency modulation unit (20) configured to perform voltage-current conversion and arithmetic processing based on the periodic signal to obtain a frequency modulation current required for performing the frequency modulation on the clock signal of the switching power supply to be controlled; and an RC oscillation unit (30) configured to perform RC oscillation processing based on the frequency modulation current to obtain a frequency oscillation signal as the clock signal of the switching power supply to be controlled.Type: ApplicationFiled: September 30, 2019Publication date: February 3, 2022Applicant: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAIInventors: Yuming FENG, Huiping YIN, Yuhua XIE, Liang ZHANG, Suibiao HUANG, Xinchao PENG, Yijun XU, Jing WANG
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Publication number: 20210122940Abstract: The present invention relates to a shielding filler, a shielding coating comprising the same, a preparation method and a use thereof. The shielding filler adopts melamine sponge as a carrier and surfaces thereof are covered with FeOx/graphene. The electromagnetic shielding coating is formed by mixing a component A and a component B in a molar ratio of (—OH)A:(—NCO)B=1:1, in which component A comprises fluorocarbon resin, elastic polyester resin, an electromagnetic filler, an auxiliary agent and a mixing solvent, and component B is isocyanate. The shielding filler of the present invention has a sponge-like macroporous structure, the pore wall surfaces of which are covered with ferrite and graphene, and the shielding filler has excellent electromagnetic shielding performance due to the electrical loss and magnetic loss. The obtained electromagnetic shielding coating layer is electrically conductive and magnetically inductive and has a broad electromagnetic shielding response frequency band.Type: ApplicationFiled: October 11, 2018Publication date: April 29, 2021Inventors: Lin Sun, Yue Xu, Yuming Feng, Peng Lin, Sansan Ding
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Patent number: 10831227Abstract: Disclosed is a reference voltage circuit with low temperature drift, including a first voltage unit, a second voltage unit and a K times' amplification unit. The first voltage unit is configured to generate a first voltage, with a first end thereof being grounded. The K times' amplification unit is configured to amplify the first voltage by K times, with a first end thereof being connected to a second end of the first voltage unit, and with a second end thereof being connected to a first end of the second voltage unit, wherein K is a constant greater than zero. The second voltage unit is configured to generate a second voltage, with the first end thereof being connected to a current source circuit, and a second end thereof being connected to a third end of the first voltage unit to serve as an output end of a reference voltage (VREF).Type: GrantFiled: October 19, 2017Date of Patent: November 10, 2020Assignee: Gree Electric Appliances, Inc. of ZhuhaiInventors: Yuming Feng, Liang Zhang, Xinchao Peng, Yijun Xu, Jianxun Li, Yuhua Xie, Shirong Fan, Jia Zhou, Wenjie Yang
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Publication number: 20200294490Abstract: The embodiments of the present disclosure relate to a technical field of home electrical appliances, and particularly to methods, apparatus, systems, and electronic devices for voice controlling a smart home electrical appliance. The method includes: acquiring speech information of a user; performing a recognition on the speech information to acquire a control command; determining a target home electrical appliance according to the control command, and transmitting the control command to the target home electrical appliance; and acquiring a first execution result sent back from the target home electrical appliance, wherein the first execution result represents a state of the target home electrical appliance.Type: ApplicationFiled: August 14, 2018Publication date: September 17, 2020Applicants: GREE ELECTRIC APPLIANCES (WUHAN) CO., LTD, GREE ELECTRIC APPLIANCES, INC.OF ZHUHAIInventors: Jing WANG, Liang ZHANG, Xinchao PENG, Yijun XU, Yuming FENG, Xiaoning BAI, Yuhua XIE, Huiping YIN, Cong WANG
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Patent number: 10644684Abstract: Disclosed are a clock compensation circuit, a clock circuit and a microcontroller. The clock compensation circuit may include: a detection circuit, configured to detect a capacitance control parameter capable of affecting a clock frequency output by a clock circuit; and a control unit, connected with the detection circuit, and configured to adjust a capacitance value of a target capacitor in the clock circuit according to the capacitance control parameter detected by the detection circuit, so as to change the clock frequency output by the clock circuit. With the clock compensation circuit, the clock circuit and the microcontroller, the problem of large fluctuation of a clock frequency output by a clock circuit in the related art is solved.Type: GrantFiled: July 11, 2017Date of Patent: May 5, 2020Assignee: Gree Electric Appliances, Inc. of ZhuhaiInventors: Yijun Xu, Xinchao Peng, Liang Zhang, Yuming Feng
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Publication number: 20190361476Abstract: Disclosed is a reference voltage circuit with low temperature drift, including a first voltage unit, a second voltage unit and a K times' amplification unit. The first voltage unit is configured to generate a first voltage, with a first end thereof being grounded. The K times' amplification unit is configured to amplify the first voltage by K times, with a first end thereof being connected to a second end of the first voltage unit, and with a second end thereof being connected to a first end of the second voltage unit, wherein K is a constant greater than zero. The second voltage unit is configured to generate a second voltage, with the first end thereof being connected to a current source circuit, and a second end thereof being connected to a third end of the first voltage unit to serve as an output end of a reference voltage (VREF).Type: ApplicationFiled: October 19, 2017Publication date: November 28, 2019Inventors: Yuming FENG, Liang ZHANG, Xinchao PENG, Yijun XU, Jianxun LI, Yuhua XIE, Shirong FAN, Jia ZHOU, Wenjie YANG
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Publication number: 20190267976Abstract: Disclosed are a clock compensation circuit, a clock circuit and a microcontroller. The clock compensation circuit may include: a detection circuit, configured to detect a capacitance control parameter capable of affecting a clock frequency output by a clock circuit; and a control unit, connected with the detection circuit, and configured to adjust a capacitance value of a target capacitor in the clock circuit according to the capacitance control parameter detected by the detection circuit, so as to change the clock frequency output by the clock circuit. With the clock compensation circuit, the clock circuit and the microcontroller, the problem of large fluctuation of a clock frequency output by a clock circuit in the related art is solved.Type: ApplicationFiled: July 11, 2017Publication date: August 29, 2019Inventors: Yijun XU, Xinchao PENG, Liang ZHANG, Yuming FENG
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Patent number: 8976546Abstract: A control integrated circuit for controlling a switch power supply, including: a voltage collecting module, configured to collect a feedback voltage based on an output voltage of the switch power supply; an error amplifying module, configured to compare the feedback voltage with a reference voltage and generate an error voltage; a time collecting module, configured to obtain a degaussing time signal based on the feedback voltage; and a constant voltage and current module, configured to collect a peak current feedback signal of a switch transistor, generate a control signal based on the error voltage, the degaussing time signal and the peak current feedback signal, wherein the control signal is for controlling an operating frequency and a duty ratio of the switch transistor, and control the switch transistor according to the control signal.Type: GrantFiled: July 30, 2012Date of Patent: March 10, 2015Assignees: Shenzhen BYD Auto R&D Company Limited, BYD Company LimitedInventors: Wenqing Wang, Xiaohua Yang, Chuntian Yu, Yuming Feng
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Publication number: 20130027985Abstract: A control integrated circuit for controlling a switch power supply, including: a voltage collecting module, configured to collect a feedback voltage based on an output voltage of the switch power supply; an error amplifying module, configured to compare the feedback voltage with a reference voltage and generate an error voltage; a time collecting module, configured to obtain a degaussing time signal based on the feedback voltage; and a constant voltage and current module, configured to collect a peak current feedback signal of a switch transistor, generate a control signal based on the error voltage, the degaussing time signal and the peak current feedback signal, wherein the control signal is for controlling an operating frequency and a duty ratio of the switch transistor, and control the switch transistor according to the control signal.Type: ApplicationFiled: July 30, 2012Publication date: January 31, 2013Inventors: Wenqing WANG, Xiaohua YANG, Chuntian YU, Yuming FENG
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Patent number: 7556835Abstract: The invention relates to a process for isolating edible protein from animal muscle by solubilizing the protein in an alkaline aqueous solution.Type: GrantFiled: September 5, 2001Date of Patent: July 7, 2009Assignee: University of MassachusettsInventors: Herbert O. Hultin, Stephen D. Kelleher, Yuming Feng, Mark P. Richards, Hordur Kristinsson, Ingrid Undeland, Shuming Ke
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Publication number: 20040067551Abstract: The invention relates to a process for isolating edible protein from animal muscle by solubilizing the protein in an alkaline aqueous solution.Type: ApplicationFiled: December 1, 2003Publication date: April 8, 2004Inventors: Herbert O. Hultin, Stephen D. Kelleher, Yuming Feng, Herbert O. Hultin, Mark P. Richards, Hordur Kristinsson, Ingrid Undeiuland