Patents by Inventor Xi Tu
Xi Tu 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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Publication number: 20240115713Abstract: Disclosed are a polyethylene glycol conjugate drug, and a preparation method therefor and the use thereof. Specifically, the present invention relates to a polyethylene glycol conjugate drug represented by formula A or a pharmaceutically acceptable salt thereof, a method for preparing the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, an intermediate for preparing the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, a pharmaceutical composition comprising the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof, and the use of the polyethylene glycol conjugate drug or the pharmaceutically acceptable salt thereof in the preparation of a drug.Type: ApplicationFiled: July 21, 2021Publication date: April 11, 2024Inventors: Gaoquan LI, Nian LIU, Yongchen PENG, Xiafan ZENG, Gang MEI, Sheng GUAN, Yang GAO, Shuai YANG, Yifeng YIN, Jie LOU, Huiyu CHEN, Kun QIAN, Yusong WEI, Qian ZHANG, Dajun LI, Xiaoling DING, Xiangwei YANG, Liqun HUANG, Xi LIU, Liwei LIU, Zhenwei LI, Kaixiong HU, Hua LIU, Tao TU
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Publication number: 20240082977Abstract: A fully-automatic aluminum thermal-spraying corrosion prevention production line based on robots and visual recognition is provided. The production line comprises an automatic feeding system comprising feeding carrying and conveying mechanisms; a laser derusting system comprising a derusting robot, a laser cleaning nozzle and derusting conveying mechanisms; an aluminum thermal-spraying system comprising an aluminum spraying robot and an aluminum thermal-spraying gun; an automatic rolling system comprising a rolling pedestal, a first rolling wheel, a second rolling wheel and a rolling drive mechanism; a laser cutting system; and a discharging and stacking system.Type: ApplicationFiled: April 19, 2022Publication date: March 14, 2024Applicant: GUIZHOU POWER GRID CO., LTDInventors: Bo LI, Zhuoyi LIU, Jun LIU, Jingxin TU, Zhiqing ZHANG, Xi FANG, Shifeng LIU, Xianwu ZENG, Dan YANG, Jinke LU, Wei DU
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Publication number: 20230328859Abstract: An intelligent adjustment method and system for an LED backlight drive, a device and a storage medium are disclosed. The method includes: acquiring optimized channel current on each of other LED substring branches other than a non-maximum conduction branch; calculating, according to the optimized channel current, the number of cycles of conducting PWM of each LED substring branch in one frame of a frame synchronizing signal as the number of cycles of the optimized conducting PWM; and adjusting a channel current of each LED substring branch to be a corresponding optimized channel current, and adjusting the number of cycles of a conducting PWM of each LED substring branch to be the number of cycles of the optimized conducting PWM.Type: ApplicationFiled: June 7, 2023Publication date: October 12, 2023Applicant: HYASIC INCORPORATIONInventors: Xi Tu, Chengdong Zhang, Junjie Zheng
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Patent number: 8958190Abstract: A control circuit, comprising a protection detection circuit, a protection synchronous output circuit, a protection synchronous input circuit and a protection circuit, is provided. The protection detection circuit is adapted to generate an error notice signal when detecting an error condition. The protection synchronous output circuit is coupled to the protection detection circuit for enabling a level of a protection synchronous pin to be a protection level when receiving the error notice signal. The protection synchronous input circuit is coupled to the protection synchronous pin for generating a synchronous protection signal when the level of the protection synchronous pin has been at the protection level for a predetermined time period. The protection circuit generates a protection signal to make the control circuit enter a protection mode when receiving one of the error notice signal and the synchronous protection signal.Type: GrantFiled: October 3, 2012Date of Patent: February 17, 2015Assignee: Green Solution Technology Co., Ltd.Inventors: Shian-Sung Shiu, Chih-Chun Sung, Xi Tu
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Publication number: 20130301178Abstract: A control circuit, comprising a protection detection circuit, a protection synchronous output circuit, a protection synchronous input circuit and a protection circuit, is provided. The protection detection circuit is adapted to generate an error notice signal when detecting an error condition. The protection synchronous output circuit is coupled to the protection detection circuit far enabling a level of a protection synchronous pin to be a protection level when receiving the error notice signal. The protection synchronous input circuit is coupled to the protection synchronous pin for generating a synchronous protection signal when the level of the protection synchronous pin has been at the protection level for a predetermined time period. The protection circuit generates a protection signal to make the control circuit enter a protection mode when receiving one of the error notice signal and the synchronous protection signal.Type: ApplicationFiled: October 3, 2012Publication date: November 14, 2013Applicant: GREEN SOLUTION TECHNOLOGY CO., LTD.Inventors: Shian-Sung SHIU, Chih-Chun SUNG, Xi TU
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Patent number: 8558483Abstract: A non-linear load driving circuit and a controller for controlling a conversion circuit to drive a non-linear load are provided. The controller includes a feedback unit, a pulse width control unit, and an overshoot reduction unit. The feedback unit generates a feedback signal according to a current feedback signal that represents a load current flowing through the non-linear load. The pulse width control unit generates a control signal according to the feedback signal to control a power output of the conversion circuit. The overshoot reduction unit generates an overshoot reduction signal when the load current changes from being smaller than to being greater than a predetermined value according to the current feedback signal. The pulse width control unit receives the overshoot reduction signal and reduces the duty cycle of the control signal accordingly. Thereby, stability of feedback control is improved and damage to circuit is prevented.Type: GrantFiled: May 30, 2011Date of Patent: October 15, 2013Assignee: Green Solution Technology Co., Ltd.Inventors: Li-Min Lee, Shian-Sung Shiu, Chung-Che Yu, Xi Tu
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Patent number: 8446098Abstract: An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.Type: GrantFiled: September 25, 2011Date of Patent: May 21, 2013Assignee: Green Solution Technology Co., Ltd.Inventors: Shian-Sung Shiu, Li-Min Lee, Chung-Che Yu, Xi Tu, Ying Wang
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Patent number: 8334661Abstract: An exemplary embodiment of the invention provides a set of an initial value of an error amplifying signal in the feedback control circuit for feedback control, so as to reduce the time and the amplitude of oscillation of the error amplifying signal. Accordingly, a feedback control circuit and a power converting circuit provided in an exemplary embodiment of the invention not only reduce the degree and the time of overshoot but also provide accurate and stable feedback control.Type: GrantFiled: September 20, 2010Date of Patent: December 18, 2012Assignee: Green Solution Technology Co., Ltd.Inventors: Li-Min Lee, Chung-Che Yu, Shian-Sung Shiu, Xi Tu
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Publication number: 20120274235Abstract: A converting controller, adapted to control a converting circuit to convert an electric power from an input power source, is provided. The controller comprises a duty cycle control unit, a protection enabling control unit and a protection unit. The duty cycle control unit controls the converting circuit according to a feedback signal for converting the electric power from the input power. The protection enabling control unit outputs protection enabling signals according to time results of a timing circuit. The protection unit detects the converting circuit and generates a protection signal when any circuit error is determined, so as to stop the duty cycle control unit, wherein the protection unit has a plurality of protection functions and enables the protection functions with respect to the protection enabling signals, respectively.Type: ApplicationFiled: September 23, 2011Publication date: November 1, 2012Applicant: GREEN SOLUTION TECHNOLOGY CO., LTD.Inventors: Li-Min LEE, Chung-Che YU, Shian-Sung SHIU, Xi TU
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Publication number: 20120268011Abstract: An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.Type: ApplicationFiled: September 25, 2011Publication date: October 25, 2012Applicant: GREEN SOLUTION TECHNOLOGY CO., LTD.Inventors: Shian-Sung Shiu, Li-Min Lee, Chung-Che Yu, Xi Tu, Ying Wang
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Publication number: 20120104967Abstract: A non-linear load driving circuit and a controller for controlling a conversion circuit to drive a non-linear load are provided. The controller includes a feedback unit, a pulse width control unit, and an overshoot reduction unit. The feedback unit generates a feedback signal according to a current feedback signal that represents a load current flowing through the non-linear load. The pulse width control unit generates a control signal according to the feedback signal to control a power output of the conversion circuit. The overshoot reduction unit generates an overshoot reduction signal when the load current changes from being smaller than to being greater than a predetermined value according to the current feedback signal. The pulse width control unit receives the overshoot reduction signal and reduces the duty cycle of the control signal accordingly. Thereby, stability of feedback control is improved and damage to circuit is prevented.Type: ApplicationFiled: May 30, 2011Publication date: May 3, 2012Applicant: GREEN SOLUTION TECHNOLOGY CO., LTD.Inventors: Li-Min Lee, Shian-Sung Shiu, Chung-Che Yu, Xi Tu
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Publication number: 20110279061Abstract: An exemplary embodiment of the invention provides a set of an initial value of an error amplifying signal in the feedback control circuit for feedback control, so as to reduce the time and the amplitude of oscillation of the error amplifying signal. Accordingly, a feedback control circuit and a power converting circuit provided in an exemplary embodiment of the invention not only reduce the degree and the time of overshoot but also provide accurate and stable feedback control.Type: ApplicationFiled: September 20, 2010Publication date: November 17, 2011Applicant: GREEN SOLUTION TECHNOLOGY CO., LTD.Inventors: Li-Min Lee, Chung-Che Yu, Shian-Sung Shiu, Xi Tu