Patents by Inventor Maoxu Li
Maoxu Li 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: 12283115Abstract: A system for measuring surface deflection of a road includes a first stereo line-scan camera pair on a sensor rig and for capturing a first set of 3D images of a road surface; a second stereo line-scan camera pair on the sensor rig and for capturing a second set of 3D images of the road surface; at least one digital electro-optical (EO) camera rigidly attached to the sensor rig; an inertial measurement unit (IMU) detecting inertial forces acting upon the sensor rig; and a processor compensating for acceleration and vibration effects upon the sensor rig; and calculating the surface deflection of the road based on the first and second sets of 3D images. The processor utilizes imagery from the EO camera and inertial measurements from the IMU to produce 2D mosaics and 3D reconstructions of the road surface from the first and second sets of 3D images.Type: GrantFiled: October 24, 2024Date of Patent: April 22, 2025Assignees: Bivateur Research Solutions, Board of Regents, The University of Texas SystemInventors: Zeeshan Rasheed, Khurram Hassan-Shafique, Maoxu Li, Nicholas Raphael Gans, Cody Lee Lundberg, Michael Edward Araujo
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Patent number: 12159467Abstract: A system for measuring surface deflection of a road includes a first stereo line-scan camera pair on a sensor rig and for capturing a first set of 3D images of a road surface; a second stereo line-scan camera pair on the sensor rig and for capturing a second set of 3D images of the road surface; at least one digital electro-optical (EO) camera rigidly attached to the sensor rig; an inertial measurement unit (IMU) detecting inertial forces acting upon the sensor rig; and a processor compensating for acceleration and vibration effects upon the sensor rig; and calculating the surface deflection of the road based on the first and second sets of 3D images. The processor utilizes imagery from the EO camera and inertial measurements from the IMU to produce 2D mosaics and 3D reconstructions of the road surface from the first and second sets of 3D images.Type: GrantFiled: July 10, 2024Date of Patent: December 3, 2024Assignees: Novateur Reserch Solutions, Board of Regents, The University of Texas SystemInventors: Zeeshan Rasheed, Khurram Hassan-Shafique, Maoxu Li, Nicholas Raphael Gans, Cody Lee Lundberg, Michael Edward Araujo
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Patent number: 12009748Abstract: The present disclosure relates to a voltage regulation apparatus, a chip and an electronic device. The apparatus comprises: a voltage output module; a first voltage generation module; a second voltage generation module; a voltage regulation module used for regulating a first comparison voltage according to an input voltage so that the first voltage generation module outputs a regulated first comparison voltage, or regulating a second comparison voltage according to the input voltage so that the second voltage generation module outputs a regulated second comparison voltage; and a control signal generation module used for outputting a control signal according to the regulated first comparison voltage or the regulated second comparison voltage, so that the voltage output module obtains an output voltage according to the control signal and the input voltage.Type: GrantFiled: May 3, 2022Date of Patent: June 11, 2024Assignee: Chipone Technology (Beijing) Co., LTD.Inventors: Maoxu Li, Dong Li
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Publication number: 20220263413Abstract: The present disclosure relates to a voltage regulation apparatus, a chip and an electronic device. The apparatus comprises: a voltage output module; a first voltage generation module; a second voltage generation module; a voltage regulation module used for regulating a first comparison voltage according to an input voltage so that the first voltage generation module outputs a regulated first comparison voltage, or regulating a second comparison voltage according to the input voltage so that the second voltage generation module outputs a regulated second comparison voltage; and a control signal generation module used for outputting a control signal according to the regulated first comparison voltage or the regulated second comparison voltage, so that the voltage output module obtains an output voltage according to the control signal and the input voltage.Type: ApplicationFiled: May 3, 2022Publication date: August 18, 2022Applicant: Chipone Technology (Beijing) Co., LTD.Inventors: Maoxu LI, Dong LI
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Patent number: 10530356Abstract: The present invention provides an overcurrent detection circuit, an overcurrent detection method, a load circuit, and a portable device. The overcurrent detection circuit comprises: a first overcurrent detection sub-circuit and a second overcurrent detection sub-circuit; wherein: the first overcurrent detection sub-circuit is configured to perform overcurrent detection for a switch circuit when a voltage of an output terminal of the switch circuit is greater than or equal to a preset threshold; and the second overcurrent detection sub-circuit is configured to perform overcurrent detection for the switch circuit when the voltage of the output terminal of the switch circuit is less than the preset threshold.Type: GrantFiled: February 26, 2015Date of Patent: January 7, 2020Assignee: FAIRCHILD SEMICONDUCTOR CORPORATIONInventors: Maoxu Li, Shide Zheng
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Patent number: 10054617Abstract: This application discusses, among other things, zero current detection. In an example, a circuit for zero current detection can include a compensating circuit and a detecting circuit. The compensating circuit can be configured to feed back a compensating voltage to the detecting circuit according to an output voltage of a DC-DC converting circuit. The detecting circuit can be configured to dynamically adjust an intentional offset voltage according to the compensating voltage, and to perform zero current detection of the DC-DC converting circuit according to the adjusted Voffset.Type: GrantFiled: November 10, 2015Date of Patent: August 21, 2018Assignee: Fairchild Semiconductor CorporationInventors: Maoxu Li, Dong Li
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Publication number: 20160139183Abstract: This application discusses, among other things, zero current detection. In an example, a circuit for zero current detection can include a compensating circuit and a detecting circuit. The compensating circuit can be configured to feed back a compensating voltage to the detecting circuit according to an output voltage of a DC-DC converting circuit. The detecting circuit can be configured to dynamically adjust an intentional offset voltage according to the compensating voltage, and to perform zero current detection of the DC-DC converting circuit according to the adjusted Voffset.Type: ApplicationFiled: November 10, 2015Publication date: May 19, 2016Inventors: Maoxu Li, Dong Li
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Publication number: 20150244164Abstract: The present invention provides an overcurrent detection circuit, an overcurrent detection method, a load circuit, and a portable device. The overcurrent detection circuit comprises: a first overcurrent detection sub-circuit and a second overcurrent detection sub-circuit; wherein: the first overcurrent detection sub-circuit is configured to perform overcurrent detection for a switch circuit when a voltage of an output terminal of the switch circuit is greater than or equal to a preset threshold; and the second overcurrent detection sub-circuit is configured to perform overcurrent detection for the switch circuit when the voltage of the output terminal of the switch circuit is less than the preset threshold.Type: ApplicationFiled: February 26, 2015Publication date: August 27, 2015Applicant: Fairchild Semiconductor CorporationInventors: Maoxu LI, Shide ZHENG
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Publication number: 20130307507Abstract: This application discusses, among other things, zero current detection. In an example, a circuit for zero current detection can include a compensating circuit and a detecting circuit. The compensating circuit can be configured to feed back a compensating voltage to the detecting circuit according to an output voltage of a DC-DC converting circuit. The detecting circuit can be configured to dynamically adjust an intentional offset voltage according to the compensating voltage, and to perform zero current detection of the DC-DC converting circuit according to the adjusted Voffset.Type: ApplicationFiled: May 17, 2013Publication date: November 21, 2013Applicant: Fairchild Semiconductor CorporationInventors: Maoxu Li, Dong Li