Patents Assigned to Gwangju Institute of Science and Technology
  • Publication number: 20240237970
    Abstract: The present disclosure relates to an apparatus and method for measuring the velocity of a surface wave using a laser ultrasound imaging technique. A method of measuring the velocity of a surface wave according to an embodiment of the present disclosure includes: emitting a laser pulse to a target material; obtaining wavefront image of a surface wave, which propagates on a surface of the target material due to the laser pulse, by emitting a probe beam to the target material; and determining a velocity of the surface wave based on variation of the wavefront image according to a time delay between the laser pulse and the probe beam.
    Type: Application
    Filed: June 20, 2023
    Publication date: July 18, 2024
    Applicant: GIST(Gwangju Institute of Science and Technology)
    Inventors: Tae Il YOON, Byeong Ha LEE, Young Gue KIM
  • Patent number: 12038399
    Abstract: An apparatus for analyzing a biological material component may include an impedance sensor comprising a first electrode having a first contact surface that contacts an analysis target, and a second electrode having a second contact surface that contacts the analysis target and that faces the first contact surface. The apparatus may include an impedance measurement assembly configured to measure impedance of the analysis target using the first electrode and the second electrode. The apparatus may include a processor configured to model the measured impedance as an equivalent circuit, and analyze a biological material component based on a modeling result.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: July 16, 2024
    Assignees: SAMSUNG ELECTRONICS CO., LTD., GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kun Sun Eom, Myoung Hoon Jung, Sung Yang, Minkook Son, Alexander Zhbanov, Ye Sung Lee
  • Publication number: 20240233738
    Abstract: Provided is an encoding apparatus including a memory configured to store instructions and a processor electrically connected to the memory and configured to execute the instructions, wherein the processor may be configured to perform a plurality of operations, when the instructions are executed by the processor, wherein the plurality of operations may include obtaining an input audio signal, generating an embedded audio signal by embedding signal components of a second frequency band of the input audio signal in a first frequency band of the input audio signal, generating additional information associated with the first frequency band and the second frequency band, generating an encoded audio signal by encoding the embedded audio signal, and formatting the encoded audio signal and the additional information into a bitstream.
    Type: Application
    Filed: July 25, 2023
    Publication date: July 11, 2024
    Applicants: Electronics and Telecommunications Research Institute, Gwangju Institute of Science and Technology
    Inventors: Inseon JANG, Seung Kwon BEACK, Tae Jin LEE, Jongmo SUNG, Woo-taek LIM, Byeongho CHO, Jongwon SHIN
  • Publication number: 20240215847
    Abstract: The present disclosure relates to a magnetic particle imaging device having a field of view (FOV) wide enough to be applicable to the human body. A magnetic particle imaging device according to some embodiments includes at least: an FFP generation unit generating a field free point (FFP) in a FOV; first to third operation coil units moving the FFP in first to third directions which are vertical to each other, respectively; an excitation coil unit generating a magnetic field in the FOV, and exciting a magnetic particle in the FOV; a reception coil unit receiving a magnetic signal generated from the magnetic particle; and a processor dividing the FOV into a plurality of partial FOVs, controlling the first to third operation coil units so that the FFP moves in each partial FOV, and generating an image for the FOV based on the magnetic signal for each partial FOV.
    Type: Application
    Filed: August 8, 2023
    Publication date: July 4, 2024
    Applicant: GIST(Gwangju Institute of Science and Technology)
    Inventors: Jung Won YOON, Tuan Anh LE, Minh Phu BUI
  • Patent number: 12024546
    Abstract: A peptide according to an embodiment may be used as an anti-cancer agent. The peptide has a binding activity to fibronectin and competitively binds to fibronectin with dysadherin. Therefore, the peptide may be used to prevent binding between dysadherin in a cell membrane of cancer cells and fibronectin in ECM, and may be used as an anti-cancer agent to weaken survival, migration or invasion of cancer cells.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: July 2, 2024
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeong Seok Nam, So Yeon Park, Tae Young Jang
  • Publication number: 20240212167
    Abstract: The present invention relates to a data augmentation apparatus for action recognition through self-supervised learning based on objects, including: an image input unit for inputting image information; an information extraction unit for extracting a feature vector with object information from motion data of the inputted image information; and a motion information synthesis unit for synthesizing motion data taking a different action and the feature vector with the object information to generate new motion data.
    Type: Application
    Filed: November 2, 2023
    Publication date: June 27, 2024
    Applicant: Gwangju Institute of Science and Technology
    Inventors: Dae Young HAN, Moon Gu JEON
  • Patent number: 12011718
    Abstract: The present invention relates to a blood diagnostic device, which includes one or more blood input parts into which blood is injected, a deterministic lateral displacement separation part which communicates with the blood input part to form a blood flow path along which the blood flows and separates white blood cells from remaining blood components, a first microchannel which communicates with the deterministic lateral displacement separation part so that the white blood cells separated through the deterministic lateral displacement separation part flow therein, one or more second microchannels which communicate with the deterministic lateral displacement separation part so that the remaining blood components separated through the deterministic lateral displacement separation part flow therein, a first discharge part which communicates with the first microchannel so that the white blood cells flowing in the first microchannel are discharged therethrough, and a second discharge part which communicates with the
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: June 18, 2024
    Assignee: GIST(Gwangju Institute of Science and Technology)
    Inventors: Sung Yang, Ji Chul Hyun, Yu Gyung Jung
  • Patent number: 12009761
    Abstract: A triboelectric generator is disclosed. The triboelectric generator according to an embodiment of the present disclosure includes a flexible electrode part comprising a first and a second dielectric layer, and at least one metal layer; and a fixed electrode part spaced apart from both sides of the flexible electrode part, and comprising a first and a second electrode connected to each other, wherein the flexible electrode part generates triboelectrification based on contact and non-contact by a fluid flow, and an electric charge moves through the metal layer, thereby effectively moving electric charges generated by triboelectrification, and increasing the friction frequency to enhance power generation efficiency.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: June 11, 2024
    Assignees: LG ELECTRONICS INC., GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Byungsoo Oh, Yoseop Shin, Sungjun Cho, Gunyoung Jung
  • Publication number: 20240183721
    Abstract: The present invention relates to a resistance-based on-chip temperature sensor which may autonomously operate in a chip. A resistance-based on-chip temperature sensor according to an exemplary embodiment of the present invention includes: a first RC oscillator having an in-chip first resistor as a component; a second RC oscillator having an in-chip second resistor as the component; and a control unit determining the temperature of the chip according to what difference between the numbers of clocks output from the first and second RC oscillators, respectively is for the same time.
    Type: Application
    Filed: September 15, 2023
    Publication date: June 6, 2024
    Applicant: GIST(Gwangju Institute of Science and Technology)
    Inventors: Min Jae LEE, Jun Ho KIM, Sin Ho LEE
  • Publication number: 20240179144
    Abstract: The present disclosure relates to a secure transmitting and receiving method that crates a dynamic key on the basis of the features of real-time data, thereby performing authentication operation. A secure transmitting method for real time data according to an embodiment of the present disclosure includes: collecting an n-th datum; compressing the n-th datum; creating and storing an n-th dynamic key in a memory on the basis of a feature extracted in the compressing; creating an n-th security key using an n-m-th dynamic key stored in the memory and transmitting the n-th security key to a server; and transmitting the compressed n-th datum to the server when receiving an authentication success signal from the server.
    Type: Application
    Filed: June 27, 2023
    Publication date: May 30, 2024
    Applicant: GIST(Gwangju Institute of Science and Technology)
    Inventors: Euiseok HWANG, Seungwook YOON
  • Publication number: 20240159658
    Abstract: The present disclosure relates to an apparatus for evaluating thermal conductance of an interface on the basis of how much the phases of acoustic phonons, which are produced in a semiconductor, change on a semiconductor interface. The apparatus for evaluating thermal conductance of a semiconductor interface according to an embodiment of the present disclosure includes: a spectrometer exciting acoustic phonons in a semiconductor by irradiating a laser beam to the semiconductor; and a processor evaluating thermal conductance of an interface of the semiconductor in accordance with a phase difference of a ascending acoustic phonon propagating toward the interface and reflecting from the interface and a descending acoustic phonon propagating in an opposite direction to the interface.
    Type: Application
    Filed: August 17, 2023
    Publication date: May 16, 2024
    Applicant: GIST(Gwangju Institute of Science and Technology)
    Inventors: Young Dahl JHO, Sehyuk LEE, Sang-Hyuk PARK
  • Patent number: 11976314
    Abstract: The present invention relates to a transformed strain having ethanol production potential, constructed by introducing a foreign gene for ethanol production into a non-ethanol producing acetogen Eubacterium limosum and a method for producing ethanol, using the strain. According to the present invention, Eubacterium limosum which is a conventional acetogen lacking ethanol production potential is used to produce ethanol, which is a high value-added product, as a single product from carbon monoxide contained in waste gas.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: May 7, 2024
    Assignees: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: In Seop Chang, Jiyeong Jeong, Shinyoung Park, In-Geol Choi, Byeonghyeok Park
  • Publication number: 20240135941
    Abstract: Provided is an encoding apparatus including a memory configured to store instructions and a processor electrically connected to the memory and configured to execute the instructions, wherein the processor may be configured to perform a plurality of operations, when the instructions are executed by the processor, wherein the plurality of operations may include obtaining an input audio signal, generating an embedded audio signal by embedding signal components of a second frequency band of the input audio signal in a first frequency band of the input audio signal, generating additional information associated with the first frequency band and the second frequency band, generating an encoded audio signal by encoding the embedded audio signal, and formatting the encoded audio signal and the additional information into a bitstream.
    Type: Application
    Filed: July 24, 2023
    Publication date: April 25, 2024
    Applicants: Electronics and Telecommunications Research Institute, Gwangju Institute of Science and Technology
    Inventors: Inseon JANG, Seung Kwon BEACK, Tae Jin LEE, Jongmo SUNG, Woo-taek LIM, Byeongho CHO, Jongwon SHIN
  • Patent number: 11964991
    Abstract: In a ruthenium complex compound according to the present invention, an NHC ligand has an excellent electron-donating ability to stabilize methylidene species due to the steric interaction between substituents having relatively different sizes. The ruthenium complex compound can improve selectivity when used as a catalyst due to having an asymmetric structure, and the activity of the ruthenium complex compound can be improved by adjusting substituents and additives. Accordingly, the ruthenium complex compound can be used as a catalyst in cross metathesis reactions including ethenolysis to produce desired compounds such as linear ?-olefins at high yield, even under relatively mild conditions.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 23, 2024
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sukwon Hong, Seunghwan Byun
  • Patent number: 11965254
    Abstract: The present invention relates to a manufacturing apparatus and method for customizing a H2/CO synthetic gas in a desired ratio by producing a synthetic gas in which H2 and CO are mixed through hydrolysis of both carbon dioxide and a nitrogen compound with low power. In a low-power electrochemical apparatus for producing a synthetic gas according to the present invention, by performing the reduction of the carbon dioxide at the cathode and the oxidation of the nitrogen compound at the anode at the same time, carbon dioxide conversion efficiency may be improved 30% or more compared to the conventional carbon dioxide conversion system, and a synthetic gas with a desired H2/CO ratio may be produced by controlling the H2/CO ratio of the produced synthetic gas, and by reducing a driving voltage, the corrosion problem of electrode materials may be inhibited and the durability of electrodes may be increased.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: April 23, 2024
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jaeyoung Lee, Minjun Choi, Jin Won Kim, Sungyool Bong, Youjin Lee, Sunki Chung
  • Patent number: 11958571
    Abstract: According to an embodiment, a maritime wireless communication system comprises a communication module installed in the at least one buoy, providing sensing information, identification information, and location information for the at least one buoy and a gateway device installed in each of a fishing vessel terminal device and a managing vessel terminal device, performing communication with the at least one buoy and a land control center via a long range (LoRa)-based communication network to provide various types of fishery information, and setting different communication options for a normal condition and the event condition in performing a communication connection function.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: April 16, 2024
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ki Seon Kim, Myoung Shin Kwak, Pranesh Psthapit, Min Seok Kim
  • Publication number: 20240108977
    Abstract: The present disclosure relates to a force and complex vibration rendering system using a force feedback device and a wideband resonance actuator, and a method for providing force and complex vibration using the system.
    Type: Application
    Filed: September 29, 2023
    Publication date: April 4, 2024
    Applicants: GIST(Gwangju Institute of Science and Technology), Gleam Systems Co., Ltd.
    Inventors: Gun Hyuk PARK, Gyeong Deok KIM, Dong Hyeon KIM, Bong Soo KIM, Sung Ho KIM
  • Patent number: 11947104
    Abstract: A spiral phase plate, according to one embodiment, for generating a Laguerre Gaussian beam by reflecting an incident beam emitted from a light source, may comprise: a first quadrant area in which the step height increase rate per unit angle decreases progressively in one direction from the point with the lowest step height to the point with the highest step height; and a second quadrant area in which the step height increase rate per unit angle increases progressively in the one direction.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: April 2, 2024
    Assignees: KOREA BASIC SCIENCE INSTITUTE, INSTITUTE FOR BASIC SCIENCE, GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: I Jong Kim, Ji Yong Bae, Hong Seung Kim, Geon Hee Kim, Ki Soo Chang, Cheonha Jeon, Il Woo Choi, Chang Hee Nam
  • Patent number: 11945002
    Abstract: The present disclosure relates to an automatic metal sorting system using laser induced breakdown spectroscopy. The system may include: a conveyer configured to move waste metals at a constant speed; a shape measurer configured to measure a position and a shape of at least one waste metal on the conveyer; a laser induced breakdown spectroscopic device configured to determine the kind of the waste metal by emitting a laser to the waste metal and receiving and analyzing a plasma spectrum signal generated by the emitted laser; and a discharger configured to separate and discharge the waste metal in accordance with the determined kind of the waste metal.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: April 2, 2024
    Assignee: GIST(Gwangju Institute of Science and Technology)
    Inventors: Sung Ho Jeong, Sung Ho Shin, Young Min Moon, Jae Pil Lee
  • Publication number: 20240077594
    Abstract: Provided is an optical phase array antenna including a coupling unit for receiving light from a light source, a light distribution unit for distributing light propagated from the coupling unit to a plurality of optical paths, a phase modulation unit for modulating a phase of the light distributed from the light distribution unit, and a light output unit that outputs the light modulated by the phase modulation unit, and includes an antenna element waveguide extending at a predetermined length through which the light propagates, and a clad layer formed to surround the antenna element waveguide, in which the antenna element waveguide has a first recessed portion recessed downward with respect to an upper surface thereof, and the clad layer has a second recessed portion recessed downward with respect to an upper surface thereof at a position adjacent to the first recessed portion.
    Type: Application
    Filed: December 28, 2022
    Publication date: March 7, 2024
    Applicant: GIST (Gwangju Institute of Science and Technology)
    Inventors: Nan Ei YU, Byeong Chan PARK