Patents by Inventor Kai Sun

Kai Sun 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: 20230216195
    Abstract: An antenna structure includes a substrate, a radiator mounted at an upper portion of a front surface of the substrate, and a grounding element mounted at a lower portion of the front surface of the substrate. The radiator has a first radiating portion. A lower edge of the first radiating portion extends downward to form a second radiating portion. Two portions of a middle of the lower edge of the first radiating portion extend downward to form a third radiating portion and a feeding portion. A free end of the feeding portion is a feeding end. One side edge of the first radiating portion is recessed inward to form a recess. The grounding element has a first grounding portion and a second grounding portion. The first grounding portion and the second grounding portion are located to two sides of the feeding portion, respectively.
    Type: Application
    Filed: September 11, 2022
    Publication date: July 6, 2023
    Inventors: CHIH-CHUNG WANG, LAN-YUNG HSIAO, MING-JU LIN, SHAO-KAI SUN
  • Publication number: 20230216183
    Abstract: An antenna structure includes a substrate, a radiator mounted at one end of a front surface of the substrate, and a grounding element mounted at the other end of the front surface of the substrate. The radiator has a first radiating portion. Two portions of a middle of one end edge of the first radiating portion extend horizontally to form a second radiating portion and a feeding portion. The feeding portion is located above the second radiating portion. A free end of the feeding portion is a feeding end. An upper portion of the other end edge of the first radiating portion extends opposite to the one end edge of the first radiating portion and extends along a rectangular spiral path to form a rectangular spiral third radiating portion.
    Type: Application
    Filed: October 18, 2022
    Publication date: July 6, 2023
    Inventors: MING-JU LIN, CHIH-CHUNG WANG, SHAO-KAI SUN, LAN-YUNG HSIAO
  • Publication number: 20230208371
    Abstract: A post driver includes an input pair circuit, a protection circuit, a common mode sensing circuit and an amplifier. The input pair circuit outputs a first signal through a first node and outputs a second signal through a second node according to a first input signal and a second input signal. The protection circuit provides the input pair circuit with voltage protection according to multiple first bias voltages and a second bias voltage, transmits the first signal to a first load to generate a first output signal, and transmits the second signal to a second load to generate a second output signal. The common mode sensing circuit senses a level of the first node and a level of the second node to generate a feedback signal. The amplifier generates the second bias voltage according to a reference signal and the feedback signal.
    Type: Application
    Filed: August 30, 2022
    Publication date: June 29, 2023
    Inventors: Yin-Yin GU, Ze-Wei HE, Zhao-Qi XU, Kai SUN
  • Patent number: 11677149
    Abstract: A multi-band antenna includes a grounding portion, a feed-in portion, a feeding point, a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion. The feed-in portion has a first end edge, a second end edge, a first side edge and a second side edge. The feeding point is disposed at the feed-in portion. The first radiation portion is extended from the grounding portion. The second radiation portion is extended from the second end edge. The third radiation portion is extended from the first end edge. The fourth radiation portion is extended from an upper portion of the first end edge and an upper portion of the second end edge.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: June 13, 2023
    Assignee: CHENG UEI PRECISION INDUSTRY CO., LTD.
    Inventors: Ming-Ju Lin, Lan-Yung Hsiao, Chih-Chung Wang, Shao-Kai Sun
  • Patent number: 11661420
    Abstract: Disclosed are a compound containing a fused ring, a use thereof and a pharmaceutical composition containing same. Provided are a compound as shown in formula I-A, a pharmaceutically acceptable salt thereof, a solvate thereof, a solvate of the pharmaceutically acceptable salt thereof or a crystal form thereof. The compound can significantly reduce the levels of HBsAg, HBeAg and HBV DNA, and can be used for preparing a drug for treating hepatitis B, and has good market prospects.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: May 30, 2023
    Assignee: NANJING HEPO PHARMACEUTICAL CO., LTD
    Inventors: Pengfei Qian, Fengbo Li, Xuejun Liu, Xiaodong Chen, Lijun Guo, Kai Sun
  • Publication number: 20230141753
    Abstract: A lidar includes a ranging module, a visible light emitting module, and a control circuit. The ranging module includes: a laser emitting unit, configured to emit a detection laser beam for detecting a target object; a light sensor unit is configured to receive an echo of the detection laser beam reflected by the target object and convert the echo into an electrical signal. A processor is connected to the light sensor unit to receive the electrical signal, and calculate a distance and/or reflectivity of the target object according to the electrical signal. The visible light emitting module is configured to emit a visible light to the outside of the lidar. The control circuit is coupled to the visible light emitting module and is configured to control the visible light emitting module to emit the visible light under a specific condition.
    Type: Application
    Filed: December 30, 2022
    Publication date: May 11, 2023
    Inventors: Kai SUN, Ying MENG, Shaoqing XIANG
  • Publication number: 20230122320
    Abstract: The present disclosure provides a detection method of a lidar. The lidar includes a detection part, and the detection part includes a plurality of detection units, where the plurality of detection units may form one or more output regions. The method includes the following steps: selecting an output region from the detection part according to current ambient light information; the output region including one or more detection units; obtaining echo information of the selected output region; and performing detection according to the echo information of the selected output region. The signal-to-noise ratio at a receiving end of the lidar is increased, and performance of the lidar is improved.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Inventors: Kai SUN, Shaoqing XIANG
  • Publication number: 20230099875
    Abstract: Example embodiments provide systems and methods for rewinding digital content during playback based on context of the digital content. A content rewind system electronically accesses digital content. A rewind trigger is detected by the system. The system analyzes the digital content to detect at least one dialog segment within the digital content. The analysis is based on context of the digital content (e.g., dialog within the digital content). The system rewinds playback of the digital content by rewinding to a starting point of a previous dialog segment.
    Type: Application
    Filed: October 28, 2022
    Publication date: March 30, 2023
    Inventor: Kai Sun
  • Patent number: 11616390
    Abstract: Provided in embodiments of the present invention are a micro-grid reconstruction method and device, a micro-grid protection and control center and a storage medium. The method includes: monitoring and acquiring current operating data of a micro-grid in real-time; storing the acquired current operating data and corresponding time stamp information in a database; analyzing an operating state of the micro-grid based on the operating data and the corresponding time stamp information that are stored in the database; and determining a current control scheme for the micro-grid according to a current analysis result, and reconstructing the micro-grid according to the current control scheme. The technical solution mentioned above realizes flexible protection and control of the micro-grid and improves the operating automation and intelligence of a system.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: March 28, 2023
    Assignee: Tsinghua University
    Inventors: Hengwei Lin, Kai Sun, Xi Xiao
  • Publication number: 20230077385
    Abstract: The present disclosure provides nanoparticle transducers and methods of use thereof for the detection of analyte concentrations in a fluid. Nanoparticle transducers can comprise a nanoparticle, such as a Pdot, coupled to an enzyme that catalyzes a reaction with the analyte. The nanoparticle transducers further comprise chromophores that emit fluorescence that varies as a function of the concentration of one of the elements of the reaction. The nanoparticle transducer thus changes fluorescence as the analyte concentration changes, transforming analyte concentration values into fluorescence intensities. The measurement of these intensities provides a measurement of the analyte concentration. The nanoparticle transducers are biocompatible, allowing for use in vivo, for the monitoring of analyte blood concentrations such as blood glucose concentrations.
    Type: Application
    Filed: November 23, 2022
    Publication date: March 16, 2023
    Applicants: University of Washington, LAMPROGEN, INC.
    Inventors: Daniel T. Chiu, Jiangbo Yu, Changfeng Wu, Kai Sun
  • Patent number: 11573327
    Abstract: A light detection and ranging system is provided for improving imaging accuracy and measurement range. The light detection and ranging system may comprise: a light source configured to emit a multi-pulse sequence into a three-dimensional environment, in which the multi-pulse sequence comprises multiple light pulses having a temporal profile; a photosensitive detector configured to detect light pulses returned from the three-dimensional environment and generate an output signal indicative of an amount of optical energy associated with a subset of the light pulses; and one or more processors electrically coupled to the light source and the photosensitive detector, and the one or more processors are configured to: generate the temporal profile based on one or more real-time conditions; and determine one or more parameters for selecting the subset of light pulses.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: February 7, 2023
    Assignee: Hesai Technology Co., Ltd.
    Inventors: Zhengqing Pan, Shaoqing Xiang, Yifan Li, Kai Sun
  • Patent number: 11575384
    Abstract: A frequency divider circuit is provided. The frequency divider circuit processes multiple input clocks. The frequency divider circuit includes a frequency dividing circuit and a retiming circuit. The frequency dividing circuit generates an intermediate clock according to a first subgroup of the input clocks. The retiming circuit generates multiple output clocks according to a second subgroup of the input clocks and the intermediate clock. The periods of the input clocks are all a first period, and the periods of the output clocks are all a second period. The first period is smaller than the second period. The frequency dividing circuit and the retiming circuit operate according to a mode control signal which determines a ratio of the first period to the second period.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: February 7, 2023
    Assignee: SIGMASTAR TECHNOLOGY LTD.
    Inventors: Chao-Fan Yao, Kai Sun
  • Publication number: 20230014229
    Abstract: Disclosed are an optical anti-counterfeiting element and an optical anti-counterfeiting product. The optical anti-counterfeiting element includes: a substrate, wherein the substrate includes a first surface and a second surface opposite each other; a micrographic layer formed on the second surface of the substrate, wherein the micrographic layer includes a micro-graphic-text region showing a preset graphic-text information and a background region, at least part of the micro-graphic-text region or the background region is covered with a small reflection surface, and the small reflection surface is covered with a color modulation structure; and a sampling layer formed on the first surface of the substrate, wherein the sampling layer is configured for sampling the micro-graphic-text layer and composing, with sampled graphics, the preset graphic-text information of a preset color showing a moire magnification effect.
    Type: Application
    Filed: August 19, 2020
    Publication date: January 19, 2023
    Inventors: Haibo Cui, Kai Sun, Jun Zhu
  • Patent number: 11553282
    Abstract: A dual-diaphragm differential capacitive microphone includes: a back plate, a first diaphragm, and a second diaphragm. The first diaphragm is insulatively supported on a first surface of the back plate, where the back plate and the first diaphragm form a first variable capacitor. The second diaphragm is insulatively supported on a second surface of the back plate, where the back plate and the second diaphragm form a second variable capacitor. The back plate is provided with at least one connecting hole. The second diaphragm is provided with a recess portion recessed towards the back plate, where the recess portion passes through the connecting hole and is connected to the first diaphragm. The dual-diaphragm differential capacitive microphone achieves a higher signal-to-noise ratio.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: January 10, 2023
    Assignee: MEMSENSING MICROSYSTEMS (SUZHOU, CHINA) CO. LTD.
    Inventors: Kai Sun, Genlan Rong, Wei Hu, Gang Li
  • Patent number: 11542539
    Abstract: The present disclosure provides nanoparticle transducers and methods of use thereof for the detection of analyte concentrations in a fluid. Nanoparticle transducers can comprise a nanoparticle, such as a Pdot, coupled to an enzyme that catalyzes a reaction with the analyte. The nanoparticle transducers further comprise chromophores that emit fluorescence that varies as a function of the concentration of one of the elements of the reaction. The nanoparticle transducer thus changes fluorescence as the analyte concentration changes, transforming analyte concentration values into fluorescence intensities. The measurement of these intensities provides a measurement of the analyte concentration. The nanoparticle transducers are biocompatible, allowing for use in vivo, for the monitoring of analyte blood concentrations such as blood glucose concentrations.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: January 3, 2023
    Assignees: UNIVERSITY OF WASHINGTON, LAMPROGEN, INC.
    Inventors: Daniel T. Chiu, Jiangbo Yu, Changfeng Wu, Kai Sun
  • Patent number: 11528559
    Abstract: A double sided speaker device, comprising a magnetic conductive carrier board, a first magnetic circuit module, a second magnetic circuit module, a first voice coil, a second voice coil, a first sounding hood, and a second sounding hood. The magnetic conductive carrier board comprises a plurality of openings. The first magnetic circuit module is disposed at one side of the magnetic conductive carrier board. The second magnetic circuit module is disposed at the other side of the magnetic conductive carrier board. The first voice coil is disposed around the first magnetic circuit module. The second voice coil is disposed around the second magnetic circuit module. The first sounding hood is disposed at one side of the magnetic conductive carrier board and comprises a first accommodating space. The second sounding hood is disposed at the other side of the magnetic conductive carrier board and comprises a second accommodating space.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: December 13, 2022
    Assignee: LUXSHARE-ICT CO., LTD.
    Inventors: Jiin-Tarng Huang, Chih-Kai Sun
  • Publication number: 20220388326
    Abstract: Provided are an optical anti-counterfeiting element and an anti-counterfeiting product, the optical anti-counterfeiting element comprises: a substrate (1); and a plurality of Fresnel structures (2) with preset lateral dimensions formed on the substrate (1), the plurality of Fresnel structures (2), when illuminated by a preset light source, being used to form preset graphic information in the transmission direction, and to present the preset graphic information with a relief effect in the reflection direction. The optical anti-counterfeiting element, when illuminated, reproduces a preset pattern from the transmission direction, and presents a relief effect from the reflection direction. The element improves anti-counterfeiting ability and recognition, and has a simple identification process.
    Type: Application
    Filed: September 22, 2019
    Publication date: December 8, 2022
    Inventors: Kai SUN, Jun ZHU
  • Publication number: 20220376393
    Abstract: A multi-band antenna includes a lower grounding portion, a feed-in portion, a feeding point, an upper grounding portion, a first extending portion, a second extending portion, a third extending portion, a fourth extending portion, a fifth extending portion, a first branch, a second branch, a third branch and a loop portion. The feed-in portion, the first extending portion, the second extending portion, the third extending portion, the fourth extending portion and the first branch form a first radiation portion. The feed-in portion, the first extending portion, the second extending portion, the third extending portion, the fifth extending portion and the second branch form a second radiation portion. The feed-in portion, the first extending portion, the second extending portion and the third branch form a third radiation portion.
    Type: Application
    Filed: April 20, 2022
    Publication date: November 24, 2022
    Inventors: MING-JU LIN, CHIH-CHUNG WANG, LAN-YUNG HSIAO, SHAO-KAI SUN
  • Publication number: 20220368016
    Abstract: A multi-band antenna includes a grounding portion, a feed-in portion, a feeding point, a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion. The feed-in portion has a first end edge, a second end edge, a first side edge and a second side edge. The feeding point is disposed at the feed-in portion. The first radiation portion is extended from the grounding portion. The second radiation portion is extended from the second end edge. The third radiation portion is extended from the first end edge. The fourth radiation portion is extended from an upper portion of the first end edge and an upper portion of the second end edge.
    Type: Application
    Filed: January 19, 2022
    Publication date: November 17, 2022
    Inventors: MING-JU LIN, LAN-YUNG HSIAO, CHIH-CHUNG WANG, SHAO-KAI SUN
  • Publication number: 20220367561
    Abstract: In various embodiments, the present disclosure includes a nitrogen-polar (N-polar) nanowire that includes an indium gallium nitride (InGaN) quantum well formed by selective area growth. It is noted that the N-polar nanowire is operable for emitting light.
    Type: Application
    Filed: May 16, 2022
    Publication date: November 17, 2022
    Inventors: Xianhe LIU, Yi SUN, Yakshita MALHOTRA, Ayush PANDEY, Ping WANG, Yuanpeng WU, Kai SUN, Zetian MI