Patents by Inventor Yanqing Li

Yanqing 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).

  • Publication number: 20230301164
    Abstract: A method for improving the stability of perovskite solar cells includes: adding iodoformamidine and cesium iodide to a solvent and stirring, adding bromomethylamine and stirring, adding lead iodide and 3,4-dichloroaniline and stirring, obtaining a perovskite precursor solution for improving the stability of perovskite solar cells, spin-coating the perovskite precursor solution for improving the stability of perovskite solar cells onto a substrate, and performing thermal annealing to obtain a light absorption layer of a solar cell. A solar cell prepared with said perovskite layer solves the defects of existing perovskite technology, providing a means for improving the stability of perovskite for use in the preparation of batteries that has low processing environment requirements and a convenient preparation method, and can maintain stable properties in an ordinary environment for a long time.
    Type: Application
    Filed: November 26, 2020
    Publication date: September 21, 2023
    Inventors: Jianxin TANG, Yanqing LI, Li CHEN, Jingde CHEN
  • Publication number: 20230225193
    Abstract: Disclosed is a perovskite precursor solution for improving stability of a perovskite solar cell. Iodoformamidine and cesium iodide are added into a solvent, and bromomethylamine, lead iodide and 3,4-dichloroaniline are added after stirring to obtain the perovskite precursor solution. The perovskite precursor solution is spin-coated on a substrate, obtaining a perovskite thin film by thermal annealing as a light absorption layer of the solar cell. The perovskite precursor solution prepared by the present invention replaces an existing perovskite layer, the defects in the existing perovskite mineralization technology are solved. The perovskite stability improvement leads lower requirements for the process environment and convenient preparation method, realizes the long-time stable performance in a common environment.
    Type: Application
    Filed: November 26, 2020
    Publication date: July 13, 2023
    Inventors: Jianxin TANG, Yanqing LI, Li CHEN, Jingde CHEN
  • Publication number: 20230174198
    Abstract: An underwater detection device includes a surface drive boat and an unmanned underwater vehicle. The surface drive boat includes: a hull; transverse attitude-stabilizing thrusters and orbit vectored thrusters arranged at the bottom of the hull; a control box arranged on the hull and electrically connected with the transverse attitude-stabilizing thrusters and the orbit vectored thrusters; a cable and a cable winding assembly arranged on the hull, the control box being connected with the unmanned underwater vehicle by the cable, the cable winding assembly being electrically connected with the control box; and a positioning assembly arranged on the hull and electrically connected with the control box.
    Type: Application
    Filed: October 20, 2022
    Publication date: June 8, 2023
    Inventors: Bingcong CHEN, Jiyang FU, Airong LIU, Jiaqiao LIANG, Jianting CHENG, Yanqing LI, Guowei LIU
  • Patent number: 11296680
    Abstract: Methods, apparatus, and systems are disclosed for voltage supervisors. An example apparatus includes a first switch having a first source, a first drain, and a first gate, a first resistor having a first terminal and a second terminal, the first terminal coupled to the first source and second terminal coupled to the first drain, a second resistor having a third terminal and a fourth terminal, the third terminal coupled to the second terminal, a third resistor having a fifth terminal and a sixth terminal, the fifth terminal coupled to the fourth terminal, a fourth resistor having a seventh terminal and an eighth terminal, the seventh terminal coupled to the sixth terminal, a second switch having a second source, a second drain, and a second gate, the second source coupled to the seventh terminal, and a comparator having an output, the output coupled to the first gate and the second gate.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: April 5, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Keliu Shu, Yanqing Li
  • Patent number: 11271392
    Abstract: A protection circuit for a signal processor, a method of operating the protection circuit, and a method of forming the protection circuit. In one example, the protection circuit is couplable to a signal port and a first power bus for the signal processor. The protection circuit includes a first diode string couplable across the signal port and the first power bus. The first diode string includes a first diode and a second diode coupled in series in a same polarity sense. The protection circuit also includes a third diode coupled in parallel with one of the first diode and the second diode in an opposite polarity sense.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: March 8, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ann Margaret Concannon, Vishwanath Joshi, Antonio Gallerano, Zhao Gao, Yanqing Li
  • Publication number: 20210265983
    Abstract: Methods, apparatus, and systems are disclosed for voltage supervisors. An example apparatus includes a first switch having a first source, a first drain, and a first gate, a first resistor having a first terminal and a second terminal, the first terminal coupled to the first source and second terminal coupled to the first drain, a second resistor having a third terminal and a fourth terminal, the third terminal coupled to the second terminal, a third resistor having a fifth terminal and a sixth terminal, the fifth terminal coupled to the fourth terminal, a fourth resistor having a seventh terminal and an eighth terminal, the seventh terminal coupled to the sixth terminal, a second switch having a second source, a second drain, and a second gate, the second source coupled to the seventh terminal, and a comparator having an output, the output coupled to the first gate and the second gate.
    Type: Application
    Filed: February 19, 2021
    Publication date: August 26, 2021
    Inventors: Keliu Shu, Yanqing Li
  • Patent number: 10819234
    Abstract: A system includes an inductor, and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node, wherein the second switch comprises a self-operated arrangement. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: October 27, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ariel Dario Moctezuma, Hasibur Rahman, William Krenik, Yanqing Li
  • Publication number: 20200235571
    Abstract: A protection circuit for a signal processor, a method of operating the protection circuit, and a method of forming the protection circuit. In one example, the protection circuit is couplable to a signal port and a first power bus for the signal processor. The protection circuit includes a first diode string couplable across the signal port and the first power bus. The first diode string includes a first diode and a second diode coupled in series in a same polarity sense. The protection circuit also includes a third diode coupled in parallel with one of the first diode and the second diode in an opposite polarity sense.
    Type: Application
    Filed: September 3, 2019
    Publication date: July 23, 2020
    Inventors: Ann Margaret Concannon, Vishwanath Joshi, Antonio Gallerano, Zhao Gao, Yanqing Li
  • Publication number: 20200099295
    Abstract: A system includes an inductor, and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node, wherein the second switch comprises a self-operated arrangement. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches.
    Type: Application
    Filed: May 31, 2019
    Publication date: March 26, 2020
    Inventors: Ariel Dario MOCTEZUMA, Hasibur RAHMAN, William KRENIK, Yanqing LI
  • Patent number: 9658705
    Abstract: A touch control apparatus, a control method thereof and an electronic device having the touch control apparatus are disclosed, which belong to the technical field of touch control. The touch control apparatus comprises: a panel (1); a transmitting antenna (2) arranged on the panel (1) and configured to transmit a detection wave for detecting whether the panel (1) is being touched; at least three resonant circuits arranged on the panel and configured to sense the detection wave and generate resonant waves; and a control processing unit (6) configured to control to process the resonant waves and position information of the resonant circuits to obtain corresponding touch information comprising at least a touch pressure and a touch position. The touch control apparatus, the control method thereof and the electronic device enable touch control of the panel by a general object through utilizing the resonant circuits.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: May 23, 2017
    Assignee: HANWANG TECHNOLOGY CO., LTD.
    Inventors: Guowei Xiang, Yihai Liang, Jian Zhong, Xianjun Wang, Baijun Song, Yanqing Li, Feng Yang
  • Patent number: 9154146
    Abstract: Disclosed are systems employing a digital background calibration technique for linearizing the front-end circuits of IF-sampling ADCs. The disclosed systems and methods employ a power series model to eliminate the static non-linearity with split-ADC architecture and LMS algorithm for background learning. The present disclosure utilizes a technique for applying two different offset signals to the input of two conversion paths in the split-ADC architecture. When the system nonlinearity is successfully calibrated, the output difference between the two conversion paths results in a fixed offset that is identical to the offset injected at the input. The disclosed digital background calibration technique can linearize the front-end circuits of high-speed ADCs and significantly reduce power consumption.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: October 6, 2015
    Assignee: The Board of Regents, The University of Texas System
    Inventors: Yun Chiu, Yuan Zhou, Yanqing Li
  • Publication number: 20140071070
    Abstract: A touch control apparatus, a control method thereof and an electronic device having the touch control apparatus are disclosed, which belong to the technical field of touch control. The touch control apparatus comprises: a panel (1); a transmitting antenna (2) arranged on the panel (1) and configured to transmit a detection wave for detecting whether the panel (1) is being touched; at least three resonant circuits arranged on the panel and configured to sense the detection wave and generate resonant waves; and a control processing unit (6) configured to control to process the resonant waves and position information of the resonant circuits to obtain corresponding touch information comprising at least a touch pressure and a touch position. The touch control apparatus, the control method thereof and the electronic device enable touch control of the panel by a general object through utilizing the resonant circuits.
    Type: Application
    Filed: April 1, 2011
    Publication date: March 13, 2014
    Applicant: HANWANG TECHNOLOGY CO., LTD.
    Inventors: Guowei Xiang, Yihai Liang, Jian Zhong, Xianjun Wang, Baijun Song, Yanqing Li, Feng Yang
  • Patent number: 6597147
    Abstract: A method of controlling a microstepping motor is disclosed. Logic circuitry is initialized by a microcontroller. A logic sequence to determine a motor use profile, a system profile, and a program flow is performed, followed by a step sequence to establish the timing pattern of electrical impulses to be directed to an integrated circuit. A predetermined acceleration table is then accessed to implement acceleration. The logic circuit returns a delay constant from the acceleration table and places a set of data relative to the delay constant in one or more registers. A timing sequence is delivered to the integrated circuit that includes a set of interrupt service routines corresponding to a state of the motion profile. Each one of the interrupt service routines reloads a timer with a next delay constant and sends the next delay constant to the integrated circuit before updating the step count.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: July 22, 2003
    Assignee: Pitney Bowes Inc.
    Inventors: Yanqing Li, Luu T. Pham
  • Publication number: 20020133262
    Abstract: The invention is a method of controlling a microstepping motor. The method begins with the initialization of a logic circuit in accordance with the requirements of a profile/index bit generated by a microcontroller. An initial stage is established for the logic circuit and determining whether or not to run the motor in stand-alone or pulse controlled mode. The logic initial stage comprises the initialization of a set of one or more data registers; configuration of interrupts and input/output ports; and, the setting of timer prescales. The method next performs a logic sequence to a motor use profile, a system profile, and a program flow. After completion of the logic sequence, the method performs a step sequence to establish the timing pattern of electrical impulses to be directed to one or more integrated circuits.
    Type: Application
    Filed: December 29, 2000
    Publication date: September 19, 2002
    Inventors: Yanqing Li, Luu T. Pham
  • Patent number: 6414460
    Abstract: The invention is a low-cost stepper motor drive system comprising a microstepping motor and a logic circuit. The logic circuit includes two integrated circuits for controlling one or more phases of the microstepping motor. Each one of the integrated circuits is a motor driver capable of producing up to sixteen microsteps per full step. Further, each one of the integrated circuits takes a set of analog/digital bits and a phase bit as input. Additionally, within the logic circuit, there is included a microcontroller for controlling the microstepping motor. The microcontroller comprises six control bits, which direct the controller in outputting a set of step sequences to the integrated circuits.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: July 2, 2002
    Assignee: Pitney Bowes Inc.
    Inventors: Yanqing Li, Luu T. Pham, Mark E. Sasso
  • Patent number: 5759950
    Abstract: A catalyst supported with noble metal(s) for the isomerization of alkylaromatics consists of (1) 0.1-0.4 wt % of Pt or (2) 0.1-0.4 wt % of Pt or 0.2-0.8 wt % of Pd, 0.01-0.20 wt % of Re and 0.05-0.50 wt % of Sn as active component, and 10-60 wt % of a zeolite with MOR structure, 0-15 wt % of ZSM-5 zeolite and 40-80 wt % of alumina as support.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: June 2, 1998
    Assignees: China Petrochemical Corporation, Research Institute of Petroleum Processing Sinopec
    Inventors: Shouxi Gui, Yuzhi Hao, Lizhi Zhou, Zhenhua Jing, Yingbin Qiao, Haohui Gu, Yanqing Li, Baoyu Cheng, Jinshui Wang
  • Patent number: 5744674
    Abstract: A catalyst for the preparation of benzene, toluene and xylene from C.sub.9.sup.+ heavy aromatics consists of zeolite ZSM-5 and .gamma.- or .eta.-Al.sub.2 O.sub.3 as carrier, Re, Sn and Pt or Pd supported on the carrier. Under the conditions of 350.degree.-450.degree. C., 0.5-3.5 MPa, a WHSV of 1-5 h.sup.-1 and a H.sub.2 /HC ratio (v/v) of 500-1200, the catalyst achieves high activity and stability as well as low hydrogen consumption.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: April 28, 1998
    Assignees: China Petrochemical Corporation, Research Institute of Petroleum Processing
    Inventors: Shouxi Gui, Yuzhi Hao, Yanqing Li, Zhenhua Jing, Haohui Gu, Zhanqiao Liang, Baoyu Cheng