Patents by Inventor Yoo Jong Lee

Yoo Jong 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).

  • Patent number: 11936318
    Abstract: Charging system and method using a motor driving system are proposed. The charging system includes a battery, an inverter to which D.C. power stored in the battery is applied, including a plurality of legs each including two switching elements, a motor including a plurality of coils of which first ends are respectively connected to connection nodes of the switching elements of each of the plurality of legs, and second ends are connected to each other to form a neutral point, and an inverter driving part configured to control switching of the switching elements, so that switching speeds of the switching elements are different for each mode of a motor driving mode and a charging mode so as to change magnitude of charging voltage supplied to the neutral point of the motor and to output the charging voltage to the battery.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: March 19, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Ji Woong Jang, Sang Cheol Shin, Yoo Jong Lee, Ki Jong Lee, Ho Tae Chun
  • Publication number: 20240056078
    Abstract: A semiconductor device includes a first circuit having a first power gating structure, a second circuit, and a third circuit having a second power gating structure that is different from the first power gating structure, and suitable for isolating the second circuit from the first circuit during a particular period.
    Type: Application
    Filed: October 26, 2023
    Publication date: February 15, 2024
    Inventors: Woongrae KIM, Yoo-Jong LEE, A-Ram RIM
  • Publication number: 20230412112
    Abstract: A motor driving apparatus includes an inverter that includes a switching element connected between either terminal of a battery and a thermistor insulated from the switching element and that drives a motor through the switching element, a resistor connected between a sensing node to which one end of the thermistor is connected and a terminal of a low source voltage, and a motor controller configured for controlling a relay connected between the battery and the switching element based on a voltage of the sensing node.
    Type: Application
    Filed: November 11, 2022
    Publication date: December 21, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Ji Woong JANG, Sang Cheol SHIN, Yoo Jong LEE, Dong Hoon PARK, Ki Jong LEE, Ho Tae CHUN
  • Patent number: 11838020
    Abstract: A semiconductor device includes a first circuit having a first power gating structure, a second circuit, and a third circuit having a second power gating structure that is different from the first power gating structure, and suitable for isolating the second circuit from the first circuit during a particular period.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: December 5, 2023
    Assignee: SK hynix Inc.
    Inventors: Woongrae Kim, Yoo-Jong Lee, A-Ram Rim
  • Patent number: 11699951
    Abstract: A DC-DC converter includes: a first capacitor; a first switching element, a second switching element, a third switching element, and a fourth switching element sequentially connected to one another in series between both ends of the first capacitor; a second capacitor having both ends connected at a connection node of the first switching element and the second switching element and a connection node of the third switching element and the fourth switching element, respectively; and a controller configured to determine whether an overvoltage is applied to both ends of the first to fourth switching elements, respectively, based on a first sensed voltage obtained by sensing a voltage applied to the first capacitor and a second sensed voltage obtained by sensing a voltage applied to the second capacitor.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: July 11, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Yoo Jong Lee, Ji Woong Jang, Ki Jong Lee, Sang Cheol Shin
  • Patent number: 11670347
    Abstract: A semiconductor device includes a data input/output control block including a first power gating circuit coupled to a supply terminal of a first voltage and a second power gating circuit coupled to a supply terminal of a second voltage, the data input/output control block suitable for generating a control signal using the first and second voltages, a data input/output block including a third power gating circuit coupled to any one of the supply terminal of the first voltage and the supply terminal of the second voltage, the data input/output block suitable for inputting and outputting a data signal using the first and second voltages based on the control signal, and a memory block, coupled to the data input/output block, suitable for writing or reading the data signal.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: June 6, 2023
    Assignee: SK hynix Inc.
    Inventors: Woongrae Kim, Yoo-Jong Lee, A-Ram Rim
  • Patent number: 11670348
    Abstract: A semiconductor device includes a data input/output control block including a first power gating circuit coupled to a supply terminal of a first voltage and a second power gating circuit coupled to a supply terminal of a second voltage, the data input/output control block suitable for generating a control signal using the first and second voltages, a data input/output block including a third power gating circuit coupled to any one of the supply terminal of the first voltage and the supply terminal of the second voltage, the data input/output block suitable for inputting and outputting a data signal using the first and second voltages based on the control signal, and a memory block, coupled to the data input/output block, suitable for writing or reading the data signal.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: June 6, 2023
    Assignee: SK hynix Inc.
    Inventors: Woongrae Kim, Yoo-Jong Lee, A-Ram Rim
  • Publication number: 20230118121
    Abstract: A virtual machine placement system for placing a plurality of virtual machines on a first physical server and a second physical server in order to efficiently operate a physical server in which the plurality of virtual machines are installed is provided. The physical server includes the first physical server and the second physical server. The virtual machine placement system includes a workload calculation module; a prediction module; a temperature prediction module; a schedule module; and a migration module. The schedule module calculates a placement schedule considering a predicted temperature of the physical server.
    Type: Application
    Filed: December 23, 2021
    Publication date: April 20, 2023
    Applicant: OKESTRO CO., LTD.
    Inventors: Ho Yeong YUN, Yoo Jong Lee, Chan Jae Lee, Young Gwang Kim, Min Jun Kim
  • Publication number: 20230124020
    Abstract: A virtual machine placement system for placing a plurality of virtual machines on a first physical server and a second physical server in order to efficiently operate a physical server in which the plurality of virtual machines are installed is disclosed. The physical server includes the first physical server and the second physical server, the virtual machine placement system contains a workload calculation module, a prediction module, a temperature prediction module, a schedule module, and a migration module, wherein the schedule module calculates a placement schedule considering predicted temperature of the physical server.
    Type: Application
    Filed: December 23, 2021
    Publication date: April 20, 2023
    Applicant: OKESTRO CO., LTD.
    Inventors: Ho Yeong YUN, Hyun Suk Jang, Yoo Jong Lee, Young Gwang Kim, Min Jun Kim
  • Publication number: 20230006596
    Abstract: Charging system and method using a motor driving system are proposed. The charging system includes a battery, an inverter to which D.C. power stored in the battery is applied, including a plurality of legs each including two switching elements, a motor including a plurality of coils of which first ends are respectively connected to connection nodes of the switching elements of each of the plurality of legs, and second ends are connected to each other to form a neutral point, and an inverter driving part configured to control switching of the switching elements, so that switching speeds of the switching elements are different for each mode of a motor driving mode and a charging mode so as to change magnitude of charging voltage supplied to the neutral point of the motor and to output the charging voltage to the battery.
    Type: Application
    Filed: June 1, 2022
    Publication date: January 5, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Ji Woong JANG, Sang Cheol SHIN, Yoo Jong LEE, Ki Jong LEE, Ho Tae CHUN
  • Patent number: 11345249
    Abstract: A power conversion apparatus for multi-voltage charging is provided. The power conversion apparatus includes a housing, a motor connecting terminal disposed at one side of the housing, a relay having a first end electrically connected to the motor connecting terminal, and a capacitor having a first terminal electrically connected to a second end of the relay, and second and third terminals respectively connected to positive and negative terminals of an external battery, wherein the motor connecting terminal, the relay, and the first, second and third terminals are disposed within the housing along an outer edge of the housing.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: May 31, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ki Jong Lee, Sang Cheol Shin, Young Seul Lim, Ji Woong Jang, Yoo Jong Lee, Jun Hwan Kim, Seong Min Lee
  • Publication number: 20220149733
    Abstract: A DC-DC converter includes: a first capacitor; a first switching element, a second switching element, a third switching element, and a fourth switching element sequentially connected to one another in series between both ends of the first capacitor; a second capacitor having both ends connected at a connection node of the first switching element and the second switching element and a connection node of the third switching element and the fourth switching element, respectively; and a controller configured to determine whether an overvoltage is applied to both ends of the first to fourth switching elements, respectively, based on a first sensed voltage obtained by sensing a voltage applied to the first capacitor and a second sensed voltage obtained by sensing a voltage applied to the second capacitor.
    Type: Application
    Filed: August 23, 2021
    Publication date: May 12, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Yoo Jong LEE, Ji Woong JANG, Ki Jong LEE, Sang Cheol SHIN
  • Patent number: 11277124
    Abstract: An overcurrent detection reference compensation system of a switching element for an inverter and an overcurrent detection system using the same can correct an overcurrent detection reference used to detect an overcurrent of a switching element according to a temperature of the switching element.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: March 15, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yoo Jong Lee, Ji Woong Jang, Ki Jong Lee, Sang Cheol Shin
  • Patent number: 11100962
    Abstract: A semiconductor device includes a power gating control block and a power gating circuit. The power gating control block activates a data power control signal during a period that is set by a target code, the period being from a point in time in which the semiconductor device enters a read mode or a write mode. In addition, the power gating control block deactivates an operation power control signal in a power-down mode. The power gating circuit inhibits a data power signal from being supplied to a data input/output block based on the data power control signal. Moreover, the power gating control block inhibits an operation power signal from being supplied to an internal operation control block based on the operation power control signal.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: August 24, 2021
    Assignee: SK hynix Inc.
    Inventors: Yoo Jong Lee, Sang Sic Yoon
  • Patent number: 11062750
    Abstract: A semiconductor device includes a phase control signal generation circuit, a phase detection circuit, and a selection/transmission circuit. The phase control signal generation circuit outputs one of a command-shifted signal generated from a command/address signal and a clock-shifted signal generated from a clock signal as a phase control signal, based on a leveling enablement signal. The phase detection circuit detects a phase of a leveling clock signal in synchronization with the phase control signal to generate a detection signal. The selection/transmission circuit outputs the detection signal as one of a phase detection signal and a phase adjustment signal based on the leveling enablement signal.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: July 13, 2021
    Assignee: SK hynix Inc.
    Inventors: Yoo Jong Lee, Kang Sub Kwak
  • Patent number: 11054888
    Abstract: A power gating circuit is provided. The power gating circuit includes a logic gate group. The power gating circuit also includes a first switching circuit coupled to first and second supply voltages and the logic gate group. The power gating circuit further includes a second switching circuit coupled to the first and second supply voltages and the logic gate group. The first and second supply voltages are supplied to the logic gate group through the first switching circuit based on a voltage select signal. The first and second supply voltages are supplied to the logic gate group through the second switching circuit based on the voltage select signal and a power down signal.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: July 6, 2021
    Assignee: SK hynix Inc.
    Inventors: Woongrae Kim, Yoo Jong Lee, Tae Yong Lee
  • Publication number: 20210178920
    Abstract: A power conversion apparatus for multi-voltage charging is provided. The power conversion apparatus includes a housing, a motor connecting terminal disposed at one side of the housing, a relay having a first end electrically connected to the motor connecting terminal, and a capacitor having a first terminal electrically connected to a second end of the relay, and second and third terminals respectively connected to positive and negative terminals of an external battery, wherein the motor connecting terminal, the relay, and the first, second and third terminals are disposed within the housing along an outer edge of the housing.
    Type: Application
    Filed: August 18, 2020
    Publication date: June 17, 2021
    Inventors: Ki Jong Lee, Sang Cheol Shin, Young Seul Lim, Ji Woong Jang, Yoo Jong Lee, Jun Hwan Kim, Seong Min Lee
  • Publication number: 20210174847
    Abstract: A semiconductor device includes a data input/output control block including a first power gating circuit coupled to a supply terminal of a first voltage and a second power gating circuit coupled to a supply terminal of a second voltage, the data input/output control block suitable for generating a control signal using the first and second voltages, a data input/output block including a third power gating circuit coupled to any one of the supply terminal of the first voltage and the supply terminal of the second voltage, the data input/output block suitable for inputting and outputting a data signal using the first and second voltages based on the control signal, and a memory block, coupled to the data input/output block, suitable for writing or reading the data signal.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 10, 2021
    Inventors: Woongrae KIM, Yoo-Jong LEE, A-Ram RIM
  • Publication number: 20210174853
    Abstract: A semiconductor device includes a phase control signal generation circuit, a phase detection circuit, and a selection/transmission circuit. The phase control signal generation circuit outputs one of a command-shifted signal generated from a command/address signal and a clock-shifted signal generated from a clock signal as a phase control signal, based on a leveling enablement signal. The phase detection circuit detects a phase of a leveling clock signal in synchronization with the phase control signal to generate a detection signal. The selection/transmission circuit outputs the detection signal as one of a phase detection signal and a phase adjustment signal based on the leveling enablement signal.
    Type: Application
    Filed: June 18, 2020
    Publication date: June 10, 2021
    Applicant: SK hynix Inc.
    Inventors: Yoo Jong Lee, Kang Sub Kwak
  • Publication number: 20210166739
    Abstract: A semiconductor device includes a data input/output control block including a first power gating circuit coupled to a supply terminal of a first voltage and a second power gating circuit coupled to a supply terminal of a second voltage, the data input/output control block suitable for generating a control signal using the first and second voltages, a data input/output block including a third power gating circuit coupled to any one of the supply terminal of the first voltage and the supply terminal of the second voltage, the data input/output block suitable for inputting and outputting a data signal using the first and second voltages based on the control signal, and a memory block, coupled to the data input/output block, suitable for writing or reading the data signal.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 3, 2021
    Inventors: Woongrae KIM, Yoo-Jong LEE, A-Ram RIM