Patents by Inventor Ki-young Jang

Ki-young Jang 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: 20240136187
    Abstract: One embodiment of the present invention provides a method of manufacturing an electronic device using a cyclic doping process including i) an operation of forming a unit transfer thin film including a two-dimensional material on a transfer substrate, ii) an operation of doping the unit transfer thin film in a low-damage doping process, iii) an operation of transferring the unit transfer thin film doped according to the operation ii) on a transfer target substrate, and iv) an operation of repeatedly performing the operations i) to iii) several times to reach a target thickness.
    Type: Application
    Filed: October 19, 2023
    Publication date: April 25, 2024
    Applicant: Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Geun Young YEOM, Ki Hyun KIM, Ji Eun KANG, Seong Jae YU, You Jin JI, Doo San KIM, Hyun Woo TAK, Yun Jong JANG, Hee Ju KIM, Ki Seok KIM
  • Patent number: 11926558
    Abstract: The present specification relates to a conductive structure body, a method for manufacturing the same, and an electrode and an electronic device including the conductive structure body.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: March 12, 2024
    Assignee: LG CHEM LTD.
    Inventors: Ilha Lee, Seung Heon Lee, Song Ho Jang, Dong Hyun Oh, Ji Young Hwang, Ki-Hwan Kim, Han Min Seo, Chan Hyoung Park, Sun Young Park
  • Patent number: 11395126
    Abstract: In order to establish a mesh network, an electronic device may iteratively identify one or more mesh-network nodes and may determine associated duty-cycle ratios based on communication with the one or more mesh-network nodes. In particular, the electronic device may select candidate mesh-network nodes based on estimated throughput metrics of their communication with a root device in the mesh network. Then, for each of the candidate mesh-network nodes, the electronic device may associate with a given candidate mesh-network node, and may measure the throughput of the given candidate mesh-network node during a time interval by communicating packets. Based on comparisons of the measured throughputs, the electronic device may identify the one or more mesh-network nodes in the candidate mesh-network nodes and may determine the associated duty-cycle ratios. Subsequently, the electronic device communicates information with the root device via the one or more mesh-network nodes based on the duty-cycle ratios.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: July 19, 2022
    Assignee: ARRIS Enterprises LLC
    Inventors: Wilson So, Steve Lee, Ki-Young Jang
  • Patent number: 11019479
    Abstract: In order to establish a mesh network, an electronic device may iteratively identify one or more mesh-network nodes and may determine associated duty-cycle ratios based on communication with the one or more mesh-network nodes. In particular, the electronic device may select candidate mesh-network nodes based on estimated throughput metrics of their communication with a root device in the mesh network. Then, for each of the candidate mesh-network nodes, the electronic device may associate with a given candidate mesh-network node, and may measure the throughput of the given candidate mesh-network node during a time interval by communicating packets. Based on comparisons of the measured throughputs, the electronic device may identify the one or more mesh-network nodes in the candidate mesh-network nodes and may determine the associated duty-cycle ratios. Subsequently, the electronic device communicates information with the root device via the one or more mesh-network nodes based on the duty-cycle ratios.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: May 25, 2021
    Assignee: ARRIS Enterprises LLC
    Inventors: Wilson So, Steve Lee, Ki-Young Jang
  • Publication number: 20210105604
    Abstract: In order to establish a mesh network, an electronic device may iteratively identify one or more mesh-network nodes and may determine associated duty-cycle ratios based on communication with the one or more mesh-network nodes. In particular, the electronic device may select candidate mesh-network nodes based on estimated throughput metrics of their communication with a root device in the mesh network. Then, for each of the candidate mesh-network nodes, the electronic device may associate with a given candidate mesh-network node, and may measure the throughput of the given candidate mesh-network node during a time interval by communicating packets. Based on comparisons of the measured throughputs, the electronic device may identify the one or more mesh-network nodes in the candidate mesh-network nodes and may determine the associated duty-cycle ratios. Subsequently, the electronic device communicates information with the root device via the one or more mesh-network nodes based on the duty-cycle ratios.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Applicant: ARRIS Enterprises LLC
    Inventors: Wilson So, Steve Lee, Ki-Young Jang
  • Patent number: 10911041
    Abstract: An electronic circuit module is provided. The electronic circuit module prevents damage by efficiently detecting an overcurrent in the electronic circuit module using an SiC MOSFET. The electronic circuit module includes an input unit that is configured to input a reference voltage and a switching unit that is configured to output a first voltage based on a current flow. A converter is configured to output a second voltage based on the first voltage and the reference voltage. An output unit is configured to compare a magnitude of the reference voltage with a magnitude of the second voltage to output a feedback signal when the second voltage is greater than the reference voltage.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: February 2, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Postech Academy-Industry Foundation
    Inventors: Jiwoong Jang, Ki Jong Lee, Sangcheol Shin, Ki Young Jang, Kangho Jeong, Kwang Hee Nam, Sung Jin Kim
  • Patent number: 10771005
    Abstract: An inverter system for a vehicle includes: an energy storage device configured to store electrical energy, a first inverter including a plurality of first switching elements and configured to convert the electrical energy stored in the energy storage device into alternating-current (AC) electric power, a second inverter including a plurality of second switching elements different from the plurality of first switching elements, a motor configured to be driven by receiving the AC power converted by the first inverter and the second inverter, current sensors disposed between the first inverter and the motor and the second inverters and the motor, respectively, and configured to detect a current input to the motor, and a controller configured to generate a pulse width modulation (PWM) signal for controlling driving of the motor.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: September 8, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Beom Sik Kim, Jin Hwan Jung, Sang Cheol Shin, Ji Woong Jang, Ki Young Jang, Ki Jong Lee
  • Patent number: 10651775
    Abstract: An inverter system for a vehicle may include an energy storage device configured to store electrical energy; a first inverter including a plurality of first switching elements, and converting the energy into AC power; a second inverter including a plurality of second switching elements different from the first switching elements, being connected to the energy storage device in parallel with the first inverter, and converting the energy into AC power; a motor driven by receiving the AC power; a PWM signal generating device configured to generate a reference Pulse-width modulation (PWM) signal for controlling driving of the motor; and a PWM signal converting device configured to convert the reference PWM signal into both a first PWM signal input into the first inverter to drive the first switching elements, and a second PWM signal input into the second inverter to drive the second switching elements.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: May 12, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Woong Jang, Ki Young Jang, Jin Hwan Jung, Sang Cheol Shin, Beom Sik Kim, Ki Jong Lee
  • Patent number: 10651772
    Abstract: An inverter system for vehicles according to the present disclosure may include: an energy storage storing electrical energy; a first inverter which includes a plurality of first switches and converts the energy stored in the energy storage into AC power; a second inverter which includes a plurality of second switches, which are different from the first switches, is connected in parallel with the first inverter to the energy storage and converts the energy stored in the energy storage into AC power; a motor driven by receiving the AC power converted through the first inverter and the second inverter; and a controller for controlling operations of the first inverter and the second inverter based on power requirements of the motor.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: May 12, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Beom Sik Kim, Jin Hwan Jung, Ki Young Jang
  • Publication number: 20200144954
    Abstract: An inverter system for a vehicle includes: an energy storage device configured to store electrical energy, a first inverter including a plurality of first switching elements and configured to convert the electrical energy stored in the energy storage device into alternating-current (AC) electric power, a second inverter including a plurality of second switching elements different from the plurality of first switching elements, a motor configured to be driven by receiving the AC power converted by the first inverter and the second inverter, current sensors disposed between the first inverter and the motor and the second inverters and the motor, respectively, and configured to detect a current input to the motor, and a controller configured to generate a pulse width modulation (PWM) signal for controlling driving of the motor.
    Type: Application
    Filed: April 19, 2019
    Publication date: May 7, 2020
    Inventors: Beom Sik KIM, Jin Hwan JUNG, Sang Cheol SHIN, Ji Woong JANG, Ki Young JANG, Ki Jong LEE
  • Patent number: 10640001
    Abstract: A wireless power transfer (WPT) method for an electric vehicle (EV) may include a vehicle controller or a vehicle assembly (VA) controller connected to the vehicle controller performing communications, for charging of a battery of the EV, with a ground assembly (GA) controller of a charger connected to a primary coil or a primary pad located outside the EV; and connecting the battery to a field winding of a driving motor of the EV before starting the WPT. The battery is charged by a power magnetically induced at the field winding from the primary coil.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: May 5, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Bum Sik Kim, Jin Hwan Jung, Hyeon Uk Kim, Ki Young Jang, Gyu Yeong Choe
  • Publication number: 20200128387
    Abstract: In order to establish a mesh network, an electronic device may iteratively identify one or more mesh-network nodes and may determine associated duty-cycle ratios based on communication with the one or more mesh-network nodes. In particular, the electronic device may select candidate mesh-network nodes based on estimated throughput metrics of their communication with a root device in the mesh network. Then, for each of the candidate mesh-network nodes, the electronic device may associate with a given candidate mesh-network node, and may measure the throughput of the given candidate mesh-network node during a time interval by communicating packets. Based on comparisons of the measured throughputs, the electronic device may identify the one or more mesh-network nodes in the candidate mesh-network nodes and may determine the associated duty-cycle ratios. Subsequently, the electronic device communicates information with the root device via the one or more mesh-network nodes based on the duty-cycle ratios.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Applicant: Ruckus Wireless, Inc.
    Inventors: Wilson So, Steve Lee, Ki-Young Jang
  • Patent number: 10542408
    Abstract: In order to establish a mesh network, an electronic device may iteratively identify one or more mesh-network nodes and may determine associated duty-cycle ratios based on communication with the one or more mesh-network nodes. In particular, the electronic device may select candidate mesh-network nodes based on estimated throughput metrics of their communication with a root device in the mesh network. Then, for each of the candidate mesh-network nodes, the electronic device may associate with a given candidate mesh-network node, and may measure the throughput of the given candidate mesh-network node during a time interval by communicating packets. Based on comparisons of the measured throughputs, the electronic device may identify the one or more mesh-network nodes in the candidate mesh-network nodes and may determine the associated duty-cycle ratios. Subsequently, the electronic device communicates information with the root device via the one or more mesh-network nodes based on the duty-cycle ratios.
    Type: Grant
    Filed: March 25, 2017
    Date of Patent: January 21, 2020
    Assignee: Arris Enterprises, LLC
    Inventors: Wilson So, Steve Lee, Ki-Young Jang
  • Publication number: 20190326844
    Abstract: An inverter system for a vehicle may include an energy storage device configured to store electrical energy; a first inverter including a plurality of first switching elements, and converting the energy into AC power; a second inverter including a plurality of second switching elements different from the first switching elements, being connected to the energy storage device in parallel with the first inverter, and converting the energy into AC power; a motor driven by receiving the AC power; a PWM signal generating device configured to generate a reference Pulse-width modulation (PWM) signal for controlling driving of the motor; and a PWM signal converting device configured to convert the reference PWM signal into both a first PWM signal input into the first inverter to drive the first switching elements, and a second PWM signal input into the second inverter to drive the second switching elements.
    Type: Application
    Filed: September 17, 2018
    Publication date: October 24, 2019
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji Woong JANG, Ki Young JANG, Jin Hwan JUNG, Sang Cheol SHIN, Beom Sik KIM, Ki Jong LEE
  • Publication number: 20190319571
    Abstract: An inverter system for vehicles according to the present disclosure may include: an energy storage storing electrical energy; a first inverter which includes a plurality of first switches and converts the energy stored in the energy storage into AC power; a second inverter which includes a plurality of second switches, which are different from the first switches, is connected in parallel with the first inverter to the energy storage and converts the energy stored in the energy storage into AC power; a motor driven by receiving the AC power converted through the first inverter and the second inverter; and a controller for controlling operations of the first inverter and the second inverter based on power requirements of the motor.
    Type: Application
    Filed: September 26, 2018
    Publication date: October 17, 2019
    Inventors: Beom Sik KIM, Jin Hwan JUNG, Ki Young JANG
  • Patent number: 10414276
    Abstract: A system for recharging a hybrid vehicle is provided with two motors and supplies commercial electricity to neutral points of the motors when a connection of a recharging stand is detected, forms an electricity loop through the neutral points of the first motor and the second motor according to a phase of the commercial electricity, and carries out a recharging mode by detecting at least a voltage of a DC link capacitor in a voltage converter, a voltage of a smoothing capacitor, and a battery voltage. According to the system, a current control value or a voltage control value is selected according to the recharging mode in order to recharge a battery based on the current control value or the voltage control value.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: September 17, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hong-seok Song, Ki-young Jang, Junghong Joo
  • Patent number: 10260967
    Abstract: An IGBT temperature sense circuit is provided. The IGBT temperature sense circuit automatically calibrates a temperature sense of a diode to minimize an error based on element characteristics of a temperature sense diode, precisely senses the temperature and removes a limit of a maximum current (to increase the maximum current) of an output of an IGBT. A temperature sense circuit includes an automatic calibrator that is configured to supply current of a current source to a current to a diode and a diode temperature sensor that is configured to measure a voltage of one side terminal of the diode based on the current of the diode based on a change of a temperature and adjustment of an operation of a protection object device.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: April 16, 2019
    Assignee: Hyundai Motor Company
    Inventors: Ji Woong Jang, Ki Jong Lee, Kang Ho Jeong, Ki Young Jang, Sang Cheol Shin
  • Publication number: 20190103865
    Abstract: An electronic circuit module is provided. The electronic circuit module prevents damage by efficiently detecting an overcurrent in the electronic circuit module using an SiC MOSFET. The electronic circuit module includes an input unit that is configured to input a reference voltage and a switching unit that is configured to output a first voltage based on a current flow. A converter is configured to output a second voltage based on the first voltage and the reference voltage. An output unit is configured to compare a magnitude of the reference voltage with a magnitude of the second voltage to output a feedback signal when the second voltage is greater than the reference voltage.
    Type: Application
    Filed: December 7, 2017
    Publication date: April 4, 2019
    Inventors: Jiwoong Jang, Ki Jong Lee, Sangcheol Shin, Ki Young Jang, Kangho Jeong, Kwang Hee Nam, Sung Jin Kim
  • Publication number: 20180279108
    Abstract: In order to establish a mesh network, an electronic device may iteratively identify one or more mesh-network nodes and may determine associated duty-cycle ratios based on communication with the one or more mesh-network nodes. In particular, the electronic device may select candidate mesh-network nodes based on estimated throughput metrics of their communication with a root device in the mesh network. Then, for each of the candidate mesh-network nodes, the electronic device may associate with a given candidate mesh-network node, and may measure the throughput of the given candidate mesh-network node during a time interval by communicating packets. Based on comparisons of the measured throughputs, the electronic device may identify the one or more mesh-network nodes in the candidate mesh-network nodes and may determine the associated duty-cycle ratios. Subsequently, the electronic device communicates information with the root device via the one or more mesh-network nodes based on the duty-cycle ratios.
    Type: Application
    Filed: March 25, 2017
    Publication date: September 27, 2018
    Applicant: Ruckus Wireless, Inc.
    Inventors: Wilson So, Steve Lee, Ki-Young Jang
  • Patent number: 10032689
    Abstract: Disclosed herein are a double-side cooling type power module and a producing method thereof. The double-side cooling type power module includes a pair of semiconductor chips disposed between an upper substrate and a lower substrate. The double-side cooling type power module includes output terminal leads configured to be disposed on a lower surface of the upper substrate and each connected to the pair of semiconductor chips, respectively; a plus terminal lead configured to be disposed at one side of an upper surface of the lower substrate to be connected to any one semiconductor chip selected from the pair of semiconductor chips; and a minus terminal lead configured to be disposed at the other side of the upper surface of the lower substrate to be connected to the other semiconductor chip of the pair of semiconductor chips.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: July 24, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Woo Yong Jeon, Hyun Koo Lee, Sung Min Park, Ki Young Jang