Patents by Inventor Yunfeng Li

Yunfeng 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).

  • Patent number: 12335618
    Abstract: Devices, methods, and non-transitory program storage devices are disclosed to provide optical image stabilization (OIS) systems having a control mode with per-image frame recentering. Due to the mechanical limits of OIS systems' movement stroke, OIS systems are typically limited to being able compensate for no more than a few degrees of camera device rotation. If the device rotation motion is larger than the OIS movement stroke, the OIS movement becomes saturated, and the OIS is not able to compensate for the device's rotation motion anymore, which could generate image blurring. In order to handle relatively large device rotation motion and increase the exposure time for video capture under low-light scene conditions, it is desirable to utilize the limited OIS stroke more efficiently. This disclosure proposes new ideas for OIS systems that opportunistically re-center themselves over a time duration at the beginning of each video image frame to reduce image blurring.
    Type: Grant
    Filed: September 26, 2023
    Date of Patent: June 17, 2025
    Assignee: Apple Inc.
    Inventors: Jianbin Nie, Santiago Alban, Yunfeng Li
  • Patent number: 12273973
    Abstract: An automatic compensation method based on temperature characteristics of RGB LEDs by first obtaining current temperatures of the RGB LEDs, and then adjusting a corresponding PWM duty cycle of each LED according to the current temperature of each LED to change drive currents of the RGB LEDs, thereby achieving compensation for the RGB LEDs. By determining a temperature adjustment coefficient of each LED based on the current temperature, temperature adjustment ratios, and an adjustment step size of the LED, and finally adjusting the PWM value according to the temperature adjustment coefficient to drive the LED, color shift is reduced. When performing PWM duty cycle adjustment, adjustment formulae are used, which only require obtaining the current temperature, the temperature adjustment ratios, and the adjustment step size of each LED, and then calculating according to the formula, therefore not requiring extensive data storage or data lookup and thus resulting in lesser computation.
    Type: Grant
    Filed: September 5, 2023
    Date of Patent: April 8, 2025
    Assignee: LUMISSIL MICROSYSTEMS LIMITED
    Inventors: YunFeng Li, JunHao Li, Hui Zhang, MingChi Huang, KunFu Lu
  • Patent number: 12257598
    Abstract: Some embodiments of the disclosure describe a batch coating apparatus. In some examples, the batch coating apparatus includes a fixing mechanism, a liquid holding mechanism, a liquid injection mechanism and a control device. The fixing mechanism includes a plurality of fixing portions for fixing work-pieces to be coated. The liquid holding mechanism includes a plurality of liquid tanks arranged side by side. The liquid injection mechanism includes a liquid storage portion and an infusion portion. The control device is configured to control at least one of a relative movement between the fixing mechanism and the liquid holding mechanism and a relative movement between the liquid holding mechanism and the liquid injection mechanism. The control device is configured to control the liquid injection mechanism to supply the coating liquid via the infusion portion.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: March 25, 2025
    Assignee: SHENZHEN SISENSING CO., LTD.
    Inventors: Yunfeng Li, Bin Xia, Mingsong Han
  • Patent number: 12200332
    Abstract: A camera module with sticky epoxy and method for dislodging particles from a corresponding IR filter. Particles, formed during manufacture or use of the camera, may accumulate in the camera (e.g., on an infrared filter) causing blemishes in camera images. A sticky epoxy with characteristics for attracting and capturing particles is located in the camera. The epoxy may be located in a gap between a substrate and an outside edge of an infrared filter coupled to the substrate. The epoxy and the gap may surround the infrared filter and the epoxy may also be located on other surfaces of the camera. A process for loosening particles from the infrared filter includes driving an actuator that moves the substrate/infrared filter assembly (perhaps striking a base assembly) to loosen the particles from the infrared filter such that the particles are moved to, and trapped by, the epoxy.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: January 14, 2025
    Assignee: Apple Inc.
    Inventors: Paulom Shah, Bumsuk Kim, Yunfeng Li
  • Publication number: 20240351970
    Abstract: The invention relates to a preparation method and application of 5-bromo-2-chloro-benzoic acid as a synthetic raw material of a hypoglycemic agent. Specifically, the 5-bromo-2-chloro-benzoic acid is prepared by taking a 5-bromo-2-aminobenzoic acid derivative as an initial raw material through two steps of reactions of diazotization, chlorination and hydrolysis, and the obtained product has the advantages of few isomer impurities, high reaction yield, good purity, low cost and suitability for industrial production. The invention also relates to the application of the 5-bromo-2-amino-benzoic acid in preparing antidiabetic drugs.
    Type: Application
    Filed: December 24, 2021
    Publication date: October 24, 2024
    Inventors: Yunfeng LI, Zhiguo ZHENG
  • Publication number: 20240279179
    Abstract: The present invention relates to the field of synthesis of drug intermediates, in particular to the field of synthesis of key intermediates for preparing the anti-rheumatoid arthritis drug tofacitinib. Specifically, provided are a 1-benzyl-4-methyl-5-alkoxy-1,2,3,6-tetrahydropyridine compound, a synthetic method thereof, and the use thereof in the preparation of a key intermediate cis-1-benzyl-3-methylamino-4-methylpiperidine of tofacitinib.
    Type: Application
    Filed: December 17, 2021
    Publication date: August 22, 2024
    Applicant: ZHEJIANG AUSUN PHARMACEUTICAL CO., LTD.
    Inventors: Yunfeng LI, Zhiguo ZHENG
  • Publication number: 20240072581
    Abstract: Disclosed is a doughnut type electromagnetic motor (100) having C-shaped stator windings (1), including C-shaped stator windings, a bearing shaft rod (2), permanent magnets (3), an adjustment circuit board (4), and a flat circular housing (5). The flat circular housing is configured to provide an ultrathin appearance structure for the motor. The permanent magnets serving as rotors are distributed along a second circle parallel to the flat circular housing, and are connected to the bearing shaft rod in the center of the motor by means of connectors, so as to form a permanent magnet rotor structure with the bearing shaft rod as a fulcrum. The C-shaped stator winding serving as a stator is arranged in a transverse direction of the permanent magnet rotor, and the permanent magnet rotor can pass through an inner ring of the C-shaped stator winding during rotating.
    Type: Application
    Filed: January 25, 2022
    Publication date: February 29, 2024
    Inventor: Yunfeng LI
  • Publication number: 20240062682
    Abstract: A model box for leakage and collapse of a buried pipeline capable of switching internal and external seepage working conditions includes a steel structure box body, an organic glass observation window, a stainless steel pipeline, an organic glass pipeline and a sand discharging pipeline; a top portion of the box body is opened and provided with a rainfall structure bracket; two sides of an interior of the box body are divided into water tanks on two sides and a sand tank in a middle portion through steel plate barriers, and the steel plate barrier is provided with a water permeable hole.
    Type: Application
    Filed: September 19, 2023
    Publication date: February 22, 2024
    Applicant: NANJING CENTER, CHINA GEOLOGICAL SURVEY (EAST CHINA CENTER FOR GEOSCIENCE INNOVATION)
    Inventors: Qing ZHANG, Yunfeng LI, Weiya GE, Zongfang CHEN, Jian HUA, Yuanzhi LU, Lili HOU, Jingjing DU
  • Publication number: 20230422369
    Abstract: An automatic compensation method based on temperature characteristics of RGB LEDs by first obtaining current temperatures of the RGB LEDs, and then adjusting a corresponding PWM duty cycle of each LED according to the current temperature of each LED to change drive currents of the RGB LEDs, thereby achieving compensation for the RGB LEDs. By determining a temperature adjustment coefficient of each LED based on the current temperature, temperature adjustment ratios, and an adjustment step size of the LED, and finally adjusting the PWM value according to the temperature adjustment coefficient to drive the LED, color shift is reduced. When performing PWM duty cycle adjustment, adjustment formulae are used, which only require obtaining the current temperature, the temperature adjustment ratios, and the adjustment step size of each LED, and then calculating according to the formula, therefore not requiring extensive data storage or data lookup and thus resulting in lesser computation.
    Type: Application
    Filed: September 5, 2023
    Publication date: December 28, 2023
    Inventors: YunFeng LI, JunHao Li, Hui ZHANG, MingChi HUANG, KunFu LU
  • Patent number: 11802507
    Abstract: A device for work done by compressed air and a dual-pressure jet engine thereof are provided, a first compressed air storage chamber for cooperating with the air intake compressor is arranged between the air intake compressor and the screw gas compressor so as to pressurize the air. The first compressed air storage chamber is communicated with the screw gas compressor, the air intake end of the screw gas compressor is provided with the fuel injection mechanism for injecting fuel inside the screw gas compressor. The air outlet end of the screw gas compressor is provided with the second compressed air storage chamber for cooperating with the screw gas compressor so as to pressurize the air. The second compressed air storage chamber is communicated with the combustion chamber which is used to be injected with fuel.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: October 31, 2023
    Inventor: Yunfeng Li
  • Publication number: 20230293537
    Abstract: The present invention relates to the use of an acetamide derivative in the prevention and treatment of Alzheimer's disease (AD).
    Type: Application
    Filed: July 6, 2021
    Publication date: September 21, 2023
    Inventors: Yunfeng Li, Liming Zhang, Rumeng Yao, Rifang Yang, Wei Dai
  • Publication number: 20230181217
    Abstract: Some embodiments of the disclosure provide an applicator for applying a medical instrument to a host. In some examples, the applicator includes a housing, an auxiliary mechanism, a first drive mechanism, and a second drive mechanism. The auxiliary mechanism includes a moving body movable with respect to the housing. A receiving portion is provided to the moving body and configured to receive and accommodate the medical instrument. A puncture member is configured to be movable with respect to the receiving portion. The first drive mechanism is configured to act on the moving body toward a proximal end. The second drive mechanism is configured to act on the puncture member toward a distal end. When released, the moving body is driven toward the proximal end by the first drive mechanism to place the medical instrument received in the receiving portion at least partially subcutaneously in the host.
    Type: Application
    Filed: December 19, 2022
    Publication date: June 15, 2023
    Applicant: SHENZHEN SISENSING TECHNOLOGY CO., LTD.
    Inventors: Yunfeng Li, Zhi Chen, Weibin Peng, Mingli Gong, Jiang Wu, Xiuliang Huang, Mingsong Han
  • Publication number: 20230182163
    Abstract: Some embodiments of the disclosure describe a batch coating apparatus. In some examples, the batch coating apparatus includes a fixing mechanism, a liquid holding mechanism, a liquid injection mechanism and a control device. The fixing mechanism includes a plurality of fixing portions for fixing work-pieces to be coated. The liquid holding mechanism includes a plurality of liquid tanks arranged side by side. The liquid injection mechanism includes a liquid storage portion and an infusion portion. The control device is configured to control at least one of a relative movement between the fixing mechanism and the liquid holding mechanism and a relative movement between the liquid holding mechanism and the liquid injection mechanism. The control device is configured to control the liquid injection mechanism to supply the coating liquid via the infusion portion.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 15, 2023
    Applicant: SHENZHEN SISENSING TECHNOLOGY CO., LTD.
    Inventors: Yunfeng Li, Bin Xia, Mingsong Han
  • Publication number: 20230175434
    Abstract: A device capable of working done by compressed air and a dual-pressure jet engine thereof are provided, a first compressed air chamber for cooperating with the air intake turbine is arranged between the air intake turbine and the screw gas compressor so as to pressurize the air. The first compressed air chamber is communicated with the screw gas compressor, the air intake end of the screw gas compressor is provided with the fuel injection mechanism for injecting fuel inside the screw gas compressor. The air outlet end of the screw gas compressor is provided with the second compressed air chamber for cooperating with the screw gas compressor so as to pressurize the air. The second compressed air chamber is communicated with the combustion chamber which is used to be injected with fuel.
    Type: Application
    Filed: December 14, 2022
    Publication date: June 8, 2023
    Inventor: Yunfeng LI
  • Patent number: 11616899
    Abstract: A camera system may include one or more controllers to perform in-field monitoring of autofocus performance and instability mitigation. The controllers may monitor one or more parameters associated with adjustment of a relative position between a lens group and an image sensor and/or one or more images. The controllers may analyze the parameters and/or images to calculate various metrics. The controllers may evaluate the metrics with respect to corresponding thresholds. The controllers may detect, based at least in part of the evaluation the metrics, one or more instability events associated with controller performance degradation. In response to detecting the instability events, the controllers may perform one or more remedial actions to mitigate the controller performance degradation.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: March 28, 2023
    Assignee: Apple Inc.
    Inventors: Abhishek Dhanda, Yunfeng Li, Santiago Alban, Andrew D. Fernandez
  • Patent number: 11573875
    Abstract: Techniques are disclosed relating to accessing, by an evaluation computer system, transaction details from a subset of current transactions being processed by a production version of a transaction processing service that is implemented on a production computer system. The evaluation computer system may perform, in real-time, tests on a particular product using the transaction details. The evaluation computer system may then store output from the tests that are performed using the transaction details.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: February 7, 2023
    Assignee: PayPal, Inc.
    Inventors: Yuehao Wu, Xiaohan Yun, Adrian Oliver Suciu, Yunfeng Li, Quin Zuo
  • Publication number: 20220390230
    Abstract: A method for generating a speech package, an electronic device and a storage medium The method includes: determining a number of texts to be displayed and a speech recording condition based on a type of a recording mode selection control in response to the recording mode selection control being triggered; acquiring speech data with an amount matched with the number based on the speech recording condition; sending the speech data to a server; and acquiring a speech package generated by the server using the speech data.
    Type: Application
    Filed: August 8, 2022
    Publication date: December 8, 2022
    Inventors: Bo PENG, Chao LI, Cong GAO, Zhanjie GAO, Yunfeng LI
  • Patent number: 11390801
    Abstract: Bright near-infrared emissive carbon dots with both ultra-narrow full width at half maximum and with two-photon fluorescence and a preparation method thereof are provided. Green leaves are used as carbon source to prepare near-infrared emissive carbon dots by one-step solvothermal method. The resulting mixture is centrifuge, filtered and dried to remove the solvent, to obtain a near-infrared carbon dots solid.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 19, 2022
    Assignee: Jilin University
    Inventors: Bai Yang, Junjun Liu, Kai Zhang, Yunfeng Li
  • Patent number: 11383740
    Abstract: A waste exhaust ventilation door automatic control device comprises a core body (8), an inner door body (2) and an outer door body (1); wherein the core body is fixed on a ventilation opening of the waste exhaust ventilation door, a top of the outer door body is movably hinged on an outer side of the core body, and a bottom of the inner door body is movably hinged on an inner side of the core body; when there is no pressure fluctuation outside the core body, the outer door body and inner door body will open, and when there is pressure fluctuation outside the core body, the outer door body and/or the inner door body will be closed automatically due to a pressure difference between inside and outside the core body. A vehicle body comprising the waste exhaust ventilation door automatic control device is also provided.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: July 12, 2022
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Shuanbao Yao, Dawei Chen, Conghui Zhang, Peng Lin, Xin Jiang, Yunfeng Li, Shaoqing Liu, Sansan Ding
  • Patent number: 11354295
    Abstract: Methods and systems for processing incoming data in real-time are described herein. The incoming data is processed in real-time to generate data records that may be improved over time, for example, by automatically correcting inaccurate data in the records. In some embodiments, when data is received, a real-time process is initially performed on the received data under a first time constraint to produce first data for a data record. Subsequently, one or more non-real-time processes are then performed on the received data under a second time constraint to produce second data for the data record. The second data may be used to update the data record, for example, to correct any inaccuracy caused by the real-time process of the received data. Preferably, the second time constraint is longer than the first time constraint.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: June 7, 2022
    Assignee: PayPal, Inc.
    Inventors: Xin Li, Xiaohan Yun, Yunfeng Li, Yang Yu, Zhijun Ling, Ke Zheng, Uri Arad, Frederic Tu