Patents by Inventor Il Woon Lee

Il Woon 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: 20240121809
    Abstract: A method of a first terminal may include: identifying first RB set(s) to be used for SL communication among consecutive RB sets through an LBT procedure; identifying a first subchannel group included in the first RB set(s) and a second subchannel group including a first PRB in the first RB set(s), the first PRB being not included in the first subchannel group; configuring the first PRB within the second subchannel group as an SL communication resource; and transmitting, to a second terminal, control information indicating that the first PRB is configured as the SL communication resource.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 11, 2024
    Inventors: Jun Hyeong KIM, Go San NOH, Il Gyu KIM, Man Ho PARK, Nak Woon SUNG, Jae Su SONG, Nam Suk LEE, Hee Sang CHUNG, Min Suk CHOI
  • Patent number: 8598741
    Abstract: There are disclosed a photovoltaic and fuel cell (PV-FC) hybrid generation system using a single converter and a single inverter, and a method of controlling the same. The PV-FC hybrid generation system includes a DC/DC converter unit converting an FC output voltage from a fuel cell, converting chemical energy into electrical energy, into a preset voltage, a DC link unit commonly connecting an output terminal of a photovoltaic cell, converting the sunlight into electrical energy, and an output terminal of the DC/DC converter unit, and linking the converted FC output voltage from the DC/DC converter unit with a PV output voltage from the photovoltaic cell to thereby generate a DC voltage, and a DC/AC inverter unit converting the DC voltage from the DC link unit into a preset AC voltage. Furthermore, a method of controlling the PV-FC hybrid generation system is proposed.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: December 3, 2013
    Assignees: Samsung Electro-Mechanics Co, Ltd., Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Jin Wook Kim, Byoung Kuk Lee, Jong Soo Kim, Gyu Yeong Choe, Jong Sun Kim, Il Woon Lee, Jae Sun Won, Jong Hae Kim, Dong Seong Oh
  • Publication number: 20110273112
    Abstract: There is provided a light emitting driver. A light emitting driver according to an aspect of the invention may include: an LED driving section driving a light emitting part according to a detection value of the light emitting part including a plurality of light emitting devices; and a detection section transmitting the detection value to the LED driving section according to a detection voltage corresponding to a magnitude of a driving current flowing through the light emitting part when an output voltage, being applied to the light emitting part, has a value smaller than a predetermined output voltage reference value, and transmitting the detection value to the LED driving section according to a magnitude of the output voltage.
    Type: Application
    Filed: November 10, 2010
    Publication date: November 10, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Il Woon LEE, Tae Won LEE, Don Sik KIM, Young Gun HONG, Dong Seong OH, Jin Wook KIM, Jong Hae KIM, Jae Sun WON
  • Patent number: 7876581
    Abstract: In accordance with the present invention, a power converter transformer for suppressing conduction EMI (ElectroMagnetic Interference) includes a primary winding positioned at a primary side; a secondary winding positioned at a second side and coupled with the primary winding; a parasitic capacitor connected between one end of the primary winding and one end of the secondary winding; a switching unit connected to the other end of the primary winding; a Y-capacitor connected between the switching unit and a ground terminal; an auxiliary winding positioned at the secondary side and coupled with the secondary winding; and an auxiliary capacitor connected between the one end of the primary winding and the auxiliary winding.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: January 25, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Hae Kim, Dong Seong Oh, Dea Min Jang, Jin Wook Kim, Il Woon Lee, Jae Sun Won, Erlan Dzhunusbekov, Dmitry Berdnikov
  • Publication number: 20100202160
    Abstract: In accordance with the present invention, a power converter transformer for suppressing conduction EMI(ElectroMagnetic Interference) includes a primary winding positioned at a primary side; a secondary winding positioned at a second side and coupled with the primary winding; a parasitic capacitor connected between one end of the primary winding and one end of the secondary winding; a switching unit connected to the other end of the primary winding; a Y-capacitor connected between the switching unit and a ground terminal; an auxiliary winding positioned at the secondary side and coupled with the secondary winding; and an auxiliary capacitor connected between the one end of the primary winding and the auxiliary winding.
    Type: Application
    Filed: March 19, 2009
    Publication date: August 12, 2010
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Hae Kim, Dong Seong Oh, Dea Min Jang, Jin Wook Kim, Il Woon Lee, Jae Sun Won, Erlan Dzhunusbekov, Dmitry Berdnikov
  • Publication number: 20100156185
    Abstract: There are disclosed a photovoltaic and fuel cell (PV-FC) hybrid generation system using a single converter and a single inverter, and a method of controlling the same. The PV-FC hybrid generation system includes a DC/DC converter unit converting an FC output voltage from a fuel cell, converting chemical energy into electrical energy, into a preset voltage, a DC link unit commonly connecting an output terminal of a photovoltaic cell, converting the sunlight into electrical energy, and an output terminal of the DC/DC converter unit, and linking the converted FC output voltage from the DC/DC converter unit with a PV output voltage from the photovoltaic cell to thereby generate a DC voltage, and a DC/AC inverter unit converting the DC voltage from the DC link unit into a preset AC voltage. Furthermore, a method of controlling the PV-FC hybrid generation system is proposed.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 24, 2010
    Applicants: Samsung Electro-Mechanics Co., Ltd., SUNGKYUNKWAN UNIVERSITY Foundation for Corporate Collaboration
    Inventors: Jin Wook Kim, Byoung Kuk Lee, Jong Soo Kim, Gyu Yeong Choe, Jong Sun Kim, Il Woon Lee, Jae Sun Won, Jong Hae Kim, Dong Seong Oh
  • Publication number: 20080246751
    Abstract: A power factor correction circuit (PFC) including a switch, a feedback signal generator for generating a feedback voltage corresponding to an output voltage, and a switching controller for receiving the feedback voltage and for controlling turn-on/turn-off of the switch. The feedback signal generator includes first and second resistors serially connected to first and second ends of an PFC output terminal; a first capacitor connected between a first node of the first and second resistors and the first end of the PFC output terminal; and a comparator for comparing a voltage of the first node and a reference voltage, and for generating a feedback voltage.
    Type: Application
    Filed: December 31, 2007
    Publication date: October 9, 2008
    Inventor: Il-Woon LEE
  • Publication number: 20080218503
    Abstract: In a power supply, a plasma display including the power supply, and a method of driving the plasma display, a DC voltage output by a power factor correction unit is converted into a voltage Vs supplied to a sustain or scan electrode during a sustain period, and the voltage Vs is converted into a voltage Va supplied to an address electrode during an address period. The voltage Vs is a less than the DC voltage of the power factor correction unit, and components with a low voltage rating can be used for the Va voltage generator.
    Type: Application
    Filed: December 19, 2007
    Publication date: September 11, 2008
    Inventor: Il-Woon Lee
  • Publication number: 20080116811
    Abstract: A plasma display device and a power supply, having advantages of performing a normal AC voltage detection operation regardless of a peripheral temperature is disclosed. The use of passive elements allows for temperature invariance.
    Type: Application
    Filed: July 17, 2007
    Publication date: May 22, 2008
    Inventor: Il-Woon Lee
  • Publication number: 20080116812
    Abstract: A plasma display device and its power supply are disclosed. The plasma display device includes driving circuit units for driving the display and a power supply for generating a plurality of power source voltages for the driving circuit units. The power supply includes a power supply unit with a first coil of a primary side of a transformer, converting an input voltage to a square wave for the first coil to provide power to second to the coils of the secondary side of the transformer.
    Type: Application
    Filed: July 31, 2007
    Publication date: May 22, 2008
    Inventor: Il-Woon Lee
  • Publication number: 20070024202
    Abstract: A power supply and a plasma display including the power supply includes: a switch electrically coupled to an input terminal; and a Pulse Width Modulation Integrated Circuit (PWM IC) adapted to control a duty cycle ratio of the switch, and to output a predetermined voltage through an output terminal according to the duty cycle ratio of the switch, the PWM IC including a first terminal coupled to a resistive component adapted to determine a switching frequency of the switch; an output load detector electrically coupled to the output terminal and adapted to detect an output load; and a resistance converter adapted to change a total resistance value of the resistive component electrically coupled to the first terminal of the PWM IC in accordance with the detected output load.
    Type: Application
    Filed: July 13, 2006
    Publication date: February 1, 2007
    Inventor: Il-Woon Lee