Patents by Inventor Hyun Ki Lee

Hyun Ki Lee 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: 20250104603
    Abstract: A display device includes a first pixel driver connected to a sweep line, the first pixel driver generating a control current based on a first data voltage, a second pixel driver connected to a scan control line, the second pixel driver generating a driving current based on a second data voltage and controlling a period for which the driving current flows, based on the control current, and a light-emitting element connected to the second pixel driver to receive the driving current. The first pixel driver includes a first transistor generating the control current based on the first data voltage, a second transistor providing the first data voltage to a first electrode of the first transistor based on a scan write signal, and a first capacitor including a first capacitor electrode connected to a gate electrode of the first transistor, and a second capacitor electrode connected to the sweep line.
    Type: Application
    Filed: December 10, 2024
    Publication date: March 27, 2025
    Inventors: Jung Hwan HWANG, Hyun Joon KIM, Kye Uk LEE, Sang Jin JEON, Jun Ki JEONG
  • Patent number: 12261021
    Abstract: A substrate treatment apparatus including a chamber; a lower electrode in the chamber, wherein the substrate is on the lower electrode; an upper electrode in the chamber, and above the lower electrode; a pulse signal generator configured to generate a pulse signal; and a bias power supply configured to generate bias power having a pulsed non-sinusoidal waveform using the pulse signal, and supply the generated bias power to the lower electrode, wherein the bias power supply includes a DC power generator configured to receive the pulse signal and generate a direct-current (DC) voltage subjected to feedforward compensation based on the pulse signal; and a modulator configured to generate a power signal having a non-sinusoidal waveform using the DC voltage, and filter the power signal using the pulse signal to generate the bias power having the pulsed non-sinusoidal waveform.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: March 25, 2025
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun Bae Kim, Ji Hwan Kim, Hyong Seo Yoon, Sang Ki Nam, Hyun Jae Lee, Myung Geun Jeong
  • Patent number: 12254809
    Abstract: A display device includes PAM data lines receiving PAM and PWM data voltages, and sub-pixels connected to the PAM and PWM data lines. A sub-pixel includes a light emitting element, a first pixel driver to supply a control current according to one of the PAM data voltages to a node, a second pixel driver to generate a driving current according to one of the PWM data voltages, and a third pixel driver to adjust a period during which the driving current is supplied to the light emitting element according to a voltage of the node. A peak current value of the driving current when the sub-pixel emits a light corresponding to a low gray level region is smaller than a peak current value of the driving current when the sub-pixel emits a light corresponding to a high gray level region higher than the low gray level region.
    Type: Grant
    Filed: January 25, 2024
    Date of Patent: March 18, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung Hwan Hwang, Hyun Joon Kim, Kye Uk Lee, Jun Ki Jeong
  • Publication number: 20250082787
    Abstract: The present invention provides an alginic acid-based injectable hydrogel system for labeling an accurate position of a disease lesion and effectively delivering a drug to a target region. The formulation of the present invention can make it easy to locally inject a contrast agent and a drug into a target region while controlling the release rate of the contrast agent or the drug, with the formation of the hydrogel in the injected region. Through the advantages, the labeled position can be accurately determined from images, thereby enhancing the precision of surgical operation, with a minimal incision formed therefor. In addition, when used, the alginic acid-based injectable hydrogel system allows the effective local delivery of a drug to a target region while increasing the long-acting effect of the drug.
    Type: Application
    Filed: November 21, 2024
    Publication date: March 13, 2025
    Applicant: National Cancer Center
    Inventors: Yong Doo CHOI, Seon Sook LEE, Hyun Jin KIM, Dae Kyung SOHN, Seok Ki KIM, Young Woo KIM, Keun Won RYU, Hong Man YOON
  • Patent number: 12249273
    Abstract: A display device includes connection lines, pulse amplitude modulation (PAM) data lines configured to receive pulse width modulation (PWM) data voltages, PWM data lines configured to receive the PWM data voltages, a first connection control line configured to receive a first connection control signal, a second connection control line configured to receive a second connection control signal, subpixels connected to the PWM data lines and the PAM data lines, and a first demultiplexer (demux) unit configured to connect the connection lines to the PAM data lines or to the PWM data lines according to the first connection control signal and the second connection control signal.
    Type: Grant
    Filed: October 30, 2023
    Date of Patent: March 11, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Hwan Hwang, Hyun Joon Kim, Kye Uk Lee, Jun Ki Jeong, Sang Jin Jeon
  • Publication number: 20250076965
    Abstract: The present disclosure relates to a method and system therefor for providing a community service, such as a messenger, an SNS, and a metaverse in a virtual reality space where a physical range is defined by a Bluetooth beacon and, specifically, to the method and system for providing the service to allow a user terminal having received this, based on a range which this packet may reach, to use the community service through a wide area network within a variable yet clearly bounded physical space (Higgsverse), allowing the beacon to broadcast an arbitrary packet by utilizing a Bluetooth network. This makes it possible to physically interact with actual objects that exist within a space in which one currently exists.
    Type: Application
    Filed: May 19, 2022
    Publication date: March 6, 2025
    Inventors: Seok Ki KIM, Jung In CHOI, Jae Kyu LEE, Keol HEO, Hyun Seo LIM
  • Publication number: 20250073800
    Abstract: The present invention relates to a method for repairing a wide crack in a hot gas path part for a gas turbine using brazing, the method including the steps of removing oxides from the inside of the wide crack of the hot gas path part, filling base metal powder and a filler into the wide crack from which the oxides have been removed, and bonding the wide crack by means of the br
    Type: Application
    Filed: July 19, 2024
    Publication date: March 6, 2025
    Inventors: Hyun Ki KANG, Sam Sub BYUN, Jong Yeob LEE, Jae Wha SON, Taek Ho CHUNG
  • Patent number: 12220636
    Abstract: Provided is a method and an apparatus for targeting an object in a game. The method of targeting an object in a game includes: setting a center point of a first targeting area based on a first input from a user; displaying the first targeting area surrounded by a closed curve around the center point on a screen of a user terminal; displaying a list including at least one object located in the first targeting area on the screen; and moving the first targeting area based on a second input by the user received after the first input.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: February 11, 2025
    Assignee: NCSOFT Corporation
    Inventors: Hyun Ku Kang, Kyung Hwan Kim, Jong Soo Kim, Sung Heun Bae, Won Jong Son, Hwan Eui Yang, Yong Ki Lee, Su Jae Lim, Sung Won Jang, Woo Young Cho, Won Min Choi, Jung Rok Choi
  • Publication number: 20250047118
    Abstract: The present disclosure provides a battery system and a controlling method of the same. The battery system includes a plurality of rechargeable battery packs, and includes a first battery pack that is rechargeable, a second battery pack that is rechargeable independently of the first battery pack, a first switching element that switches the first battery pack between at least a charging node and a discharging node, a second switching element that switches the second battery pack between at least the charging node and the discharging node, and a controller that controls switching states of the first switching element and the second switching element based on usage states and states of charge of the first battery pack and the second battery pack, and thus it is possible to effectively charge a high capacity and high output battery pack.
    Type: Application
    Filed: October 18, 2024
    Publication date: February 6, 2025
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Ji Eun KIM, Sang Hoon LEE, Jae Dong PARK, Hyun Ki CHO
  • Publication number: 20250033117
    Abstract: The present invention relates to a method for repairing a tooth of a labyrinth seal using 3D printing, the labyrinth seal consisting of an arch-shaped body and teeth protruding from the inner surface as one surface of the arch-shaped body, the method including the steps of: removing a damaged tooth from the body of the labyrinth seal; depositing a tooth onto the body by means of the 3D printing; and adjusting the surface roughness of the deposited tooth by means of machining.
    Type: Application
    Filed: July 19, 2024
    Publication date: January 30, 2025
    Inventors: Hyun Ki KANG, Sam Sub BYUN, Jong Yeob LEE, Jae Wha SON
  • Patent number: 12209500
    Abstract: The present invention relates to a method for manufacturing a labyrinth seal using wire arc additive manufacturing, which is mounted between a diaphragm of a turbine and a turbine rotor to induce a smooth rotation of the turbine rotor and preventing gas leakage by minimizing friction between the diaphragm of a turbine and a turbine rotor when a rotating body such as the turbine rotor rotates inside a fixed body such as the diaphragm, and which includes a ring-shaped body part and a tooth part protruding on one side of the ring-shaped body part, wherein the labyrinth seal is deposition-manufactured by 3D printing, the body part is manufactured by the wire arc additive manufacturing, and the tooth part is manufactured by a directed energy deposition.
    Type: Grant
    Filed: December 21, 2023
    Date of Patent: January 28, 2025
    Assignee: TURBO POWERTECH CO., LTD.
    Inventors: Hyun Ki Kang, Sam Sub Byun, Jong Yeob Lee, Jae Wha Son, Taek Ho Chung
  • Patent number: 12211977
    Abstract: Disclosed is a battery management system and a battery pack and the battery management system includes: a pack voltage sampling unit for periodically sampling a pack voltage of a battery pack; a pack current sampling unit for sampling a pack current of the battery pack; and a control unit for, when the pack voltage sampling of the battery pack is completed, recording a time from a sampling start time of the pack voltage to a sampling completion time of the pack voltage as a first time, and transmitting a voltage sampling synchronization signal for measuring a cell voltage of a battery cell to a plurality of lower-level battery management systems.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: January 28, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hyun Ki Cho, Jae Dong Park, Keun Wook Lee
  • Patent number: 12161457
    Abstract: An optical tracking system may comprise a reference marker unit stationarily disposed relative to a patient, a shape measurement unit configured to measure the three-dimensional shape of a specified part of the patient corresponding to a three-dimensional image, a tracking sensor unit configured to sense the reference marker unit and the shape measurement unit, and a processing unit. The processing unit may acquire a coordinate transformation relationship between the reference marker unit and the tracking sensor unit and a coordinate transformation relationship between the shape measurement unit and the tracking sensor unit based on a sensing result of the tracking sensor unit, acquire a coordinate transformation relationship between the specified part of the patient and the shape measurement unit based on a measurement result of the shape measurement unit, and define a coordinate system of the patient relative to the reference marker unit from the acquired coordinate transformation relationships.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: December 10, 2024
    Assignee: KOH YOUNG TECHNOLOGY INC.
    Inventor: Hyun Ki Lee
  • Publication number: 20240211941
    Abstract: Provided is a blockchain provision system using a non-competitive consensus algorithm and micro-chain architecture to ensure transaction processing speed, scalability, and security useful for commercial services. The system includes: a network providing the blockchain services. The network includes: mainnets communicating with other micro-chains according to an inter-chain communication protocol and issuing or burning a coin, and a micro-chain architecture connected to the mainnet and including a plurality of micro-chains in which a smart contract conclusion performed using the coin operates according to each area, and the micro-chains independently perform business logic without interfering with each other, and execute different business logics to execute smart contracts corresponding to the micro-chains, respectively.
    Type: Application
    Filed: June 28, 2023
    Publication date: June 27, 2024
    Inventors: Jung Geun LEE, Hyun Ki LEE, Min Ki LEE, Jin Su HAN, Young Hoon JO, Beum Gyu GWAK
  • Patent number: 11730547
    Abstract: A tracking system and a tracking method using the same are disclosed. The tracking system includes a marker, a camera unit, a first inertial measuring unit, a second inertial measuring unit and a tracking processing unit. The marker is fixed on the measurement object, and the camera unit outputs a marker image by photographing the marker. The first inertial measuring unit is fixed on the camera unit, and measures and outputs first inertia comprising first accelerated velocity and first angular velocity. The second inertial measuring unit is fixed to one of the measurement object and the marker, and measures and outputs second inertia comprising second accelerated velocity and second angular velocity. The tracking processing unit primarily extracts the position and the posture of the measurement object using the marker image, and secondarily extracts the position and the posture of the measurement object using the first and second inertias.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: August 22, 2023
    Assignees: KOH YOUNG TECHNOLOGY INC., KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Hyun Ki Lee, Hyun Min Oh, Min Young Kim
  • Publication number: 20220079465
    Abstract: An optical tracking system may comprise a reference marker unit stationarily disposed relative to a patient, a shape measurement unit configured to measure the three-dimensional shape of a specified part of the patient corresponding to a three-dimensional image, a tracking sensor unit configured to sense the reference marker unit and the shape measurement unit, and a processing unit. The processing unit may acquire a coordinate transformation relationship between the reference marker unit and the tracking sensor unit and a coordinate transformation relationship between the shape measurement unit and the tracking sensor unit based on a sensing result of the tracking sensor unit, acquire a coordinate transformation relationship between the specified part of the patient and the shape measurement unit based on a measurement result of the shape measurement unit, and define a coordinate system of the patient relative to the reference marker unit from the acquired coordinate transformation relationships.
    Type: Application
    Filed: November 24, 2021
    Publication date: March 17, 2022
    Applicant: KOH YOUNG TECHNOLOGY INC.
    Inventor: Hyun Ki LEE
  • Patent number: 11206998
    Abstract: An optical tracking system may comprise a reference marker unit stationarily disposed relative to a patient, a shape measurement unit configured to measure the three-dimensional shape of a specified part of the patient corresponding to a three-dimensional image, a tracking sensor unit configured to sense the reference marker unit and the shape measurement unit, and a processing unit. The processing unit may acquire a coordinate transformation relationship between the reference marker unit and the tracking sensor unit and a coordinate transformation relationship between the shape measurement unit and the tracking sensor unit based on a sensing result of the tracking sensor unit, acquire a coordinate transformation relationship between the specified part of the patient and the shape measurement unit based on a measurement result of the shape measurement unit, and define a coordinate system of the patient relative to the reference marker unit from the acquired coordinate transformation relationships.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: December 28, 2021
    Assignee: KOH YOUNG TECHNOLOGY INC.
    Inventor: Hyun Ki Lee
  • Patent number: 11204423
    Abstract: A micro robot that is moveable in a body includes first quantum dots.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: December 21, 2021
    Assignee: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hyun Ki Lee, Jin Young Kim, Sung Jun Lim, Hong Soo Choi
  • Patent number: 10986996
    Abstract: The present disclosure relates to an OCT device, which can be simply mounted without changing the structure of a microscope or an endoscope, thereby realizing an OCT system and, more particularly, to a removable OCT device including: a tunable laser configured to emit light to the light output side of an optical device by tuning the wavelength of the light; a first beam splitter installed on a path of the light emitted from the tunable laser; and a reference mirror installed on a path of the light that has passed through the first beam splitter, wherein the removable OCT device is mounted at the light output side of the optical device.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: April 27, 2021
    Assignee: KOH YOUNG TECHNOLOGY INC.
    Inventor: Hyun Ki Lee
  • Publication number: 20210038323
    Abstract: An optical tracking system and a method using the same capable of detecting an exact spatial position and a direction of a target regardless of the distance from the target to be calculated is disclosed. The optical tracking system and a method using the same according to an embodiment of the present invention has an effect of expanding an available area by detecting an exact spatial position and a direction of a target regardless of the distance from the target to be calculated, as well as, a system downsizing is also achieved by significantly reducing size of the marker unit compared with conventional system.
    Type: Application
    Filed: October 22, 2020
    Publication date: February 11, 2021
    Applicants: KOH YOUNG TECHNOLOGY INC., KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION
    Inventors: Jong-Kyu HONG, Hyun-Ki LEE, Min-Young KIM, You-Seong CHAE