Patents by Inventor Ji Cheol Lee

Ji Cheol 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: 10662569
    Abstract: Disclosed is a driving apparatus for a washing machine, which includes a washing shaft and a dewatering shaft which penetrate into the inside; an annular clutch holder installed at the bottom of the clutch housing; a clutch lever hinge-coupled to the clutch holder, the clutch lever consisting of a top rotating unit and a coupler receiving unit; a driving lever having a lever arm connected to the top rotating unit of the clutch lever by a linking spring to operate; a clutch coupler laid on the top of the coupler receiving unit to make up and down spline movement by the coupler receiving unit; and a motor assembly comprising a stator assembly coupled to the bottom of the clutch holder and comprising a stator core, and a rotor assembly comprising a rotor housing.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: May 26, 2020
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Ji Min Lee, Gyeong Sik Yang
  • Publication number: 20200162700
    Abstract: Provided is a home monitoring method and apparatus. A home gateway executes receiving, from a mobile terminal, a request message for requesting home monitoring, providing, to the mobile terminal in response to the request message, monitoring information associated with a camera module included in at least one home device registered in advance and/or a position to be monitored, receiving, from the mobile terminal, selection information indicating a first camera module selected based on the monitoring information, transmitting, to the mobile terminal, image data captured and collected by the first camera module in response to the reception of the selection information, receiving, from the mobile terminal, a control command with respect to the first camera module, and transmitting the control command to a first home device including the first camera module.
    Type: Application
    Filed: January 21, 2020
    Publication date: May 21, 2020
    Inventors: Kyung-Jae KIM, Ji-Hyeon KWEON, Keun-Cheol LEE, Dong-Seok KIM, Hyun-Sik KIM
  • 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
  • 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: 10645564
    Abstract: A method and an apparatus for providing, setting, maintaining, and releasing a packet data network (PDN) connection on the basis of a local area in a wireless communication system are provided. The method includes receiving the PDN subscription information on the basis of the local area from a business operator server, inspecting whether the current location information for the terminal exists in the PDN subscription information on the basis of the local area, and starting a procedure for setting the PDN on the basis of the local area when the current location information exists therein.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 5, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-Cheol Lee, Song-Yean Cho, Sung-Ho Choi
  • Publication number: 20200127655
    Abstract: A gate driving apparatus for a power semiconductor device may include: a first off-resistor and a second off-resistor each having a first end connected to a gate of the power semiconductor device; a first off-switch configured to determine a connection state between a second end of the first off-resistor and a ground based on a gate driving signal for determining an on/off state of the power semiconductor device; a second off-switch configured to determine a connection state between a second end of the second off-resistor and the ground; an electric current detector configured to detect an electric current flowing from a collector (drain) of the power semiconductor device to an emitter (source) of the power semiconductor device; and a controller configured to determine an open/closed state of the second off-switch based on the gate driving signal and a magnitude of the electric current detected by the electric current detector.
    Type: Application
    Filed: November 26, 2018
    Publication date: April 23, 2020
    Inventors: Ki Jong Lee, Ji Woong Jang, Kang Ho Jeong, Sang Cheol Shin, Han Geun Jang
  • Patent number: 10629624
    Abstract: A thin film transistor array panel includes a substrate, a gate insulating layer, an interface layer, and a semiconductor layer. The gate insulating layer is disposed on the substrate. The interface layer is disposed on the gate insulating layer. The semiconductor layer is disposed on the interface layer. The interface layer includes a fluorinated silicon oxide. The semiconductor layer includes a p-type oxide semiconductor material.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: April 21, 2020
    Assignees: SAMSUNG DISPLAY CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Jae Heung Ha, Jong Woo Kim, Ji Young Moon, Min Ho Oh, Seung Jae Lee, Yoon Hyeung Cho, Young Cheol Joo, Hyeong Joon Kim, Eun-Kil Park, Sang Jin Han
  • Patent number: 10631030
    Abstract: A technique for providing a video streaming service is provided. A method of a mobile device for providing a video streaming service includes sending periodically location and moving path information of the mobile device to a first server, receiving bitrate information per location predicted according to a moving path of the mobile device, from the first server, determining a bitrate for a current location of the mobile device based on the predicated bitrate information per location of the mobile device, and requesting a second server to send video segments based on the bitrate.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: April 21, 2020
    Assignees: Samsung Electronics Co., Ltd., Seoul National University R&DB Foundation
    Inventors: Hyung-Ho Lee, Taekyoung Kwon, Han-Na Lim, Dookyoon Han, Ji-Cheol Lee, Youngbin Im, Taejoong Chung
  • Patent number: 10622851
    Abstract: A motor having a stator with coupled teeth according to the present invention includes a stator which includes a circular base, a plurality of poles radially formed in the base, and a plurality of teeth formed on an outer diameter of the pole; and a rotor which includes a rotor housing in which the stator is positioned inside and a plurality of magnets facing the teeth are formed on an inner wall, wherein two teeth are symmetrically formed on an outer diameter portion for each pole, and the number of teeth is twice the number of poles.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: April 14, 2020
    Assignees: NEW MOTECH CO., LTD., INDUSTRY ACADEMIC COOPERATION FOUNDATION, KUNSAN NATIONAL UNIVERSITY
    Inventors: Jeong Cheol Jang, Ji Min Lee, Gyeong Sik Yang, Seung Hoon Lee, Byung Taek Kim, Nam Jong Kim
  • Publication number: 20200051713
    Abstract: Provided is a power cable, particularly, an ultra-high voltage underground or submarine cable for long-distance direct-current transmission. More specifically, the present invention relates to a power cable, in which an insulating layer has high dielectric strength, an electric field applied to the insulating layer is effectively reduced, and particularly, a void is suppressed from occurring in the insulating layer due to contraction of insulating oil, caused by a decrease of temperature in the insulating layer under a low-temperature condition or when the supply of an electric current is stopped, thereby effectively suppressing partial discharge, dielectric breakdown, etc. due to an electric field concentrated in the void.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 13, 2020
    Inventors: Ji Sung KIM, Weon Bae KIM, Kyoung Ro KO, Joon Keun LEE, Kum Hwan Cha, Jae Cheol Gwag, Tae Hyun KIM
  • Patent number: 10560818
    Abstract: The present invention relates to a method, packet data network gateway (PGW), and server in a mobile communication system and device for controlling charging in a mobile communication system. The method by a PGW in a mobile communication system includes identifying data usage information associated with a specific service for a terminal, determining whether the data usage information satisfies a predetermined condition, and transmitting a notification message including the data usage information if the data usage information satisfies the predetermined condition, to a policy and charging rules function (PCRF) entity. The data usage information is used to display a message in the terminal.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: February 11, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Song Yean Cho, Ji Cheol Lee, Sung Ho Choi, Joon Ho Park, Kill Yeon Kim, Ki Suk Kweon
  • Patent number: 10560389
    Abstract: Methods and apparatuses for controlling transmission control protocol (TCP) send buffers in communication systems are provided. The method includes identifying a current round-trip time (RTT) value and a minimum RTT value in the TCP and adjusting a size of the send buffer based on at least one of a current operation, the current RTT value, and the minimum RTT value in a congestion control scheme according to the TCP.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: February 11, 2020
    Assignees: Samsung Electronics Co., Ltd., The Regents of the University of Colorado A Body Corporate
    Inventors: Jin-Sung Lee, Young-Bin Im, Sangtae Ha, Sang-Jun Moon, Jung-Shin Park, Ji-Cheol Lee, Joo-Hyung Lee
  • Publication number: 20200032305
    Abstract: A novel modified polypeptide having an isopropylmalate synthase activity, a polynucleotide encoding the same, a microorganism comprising the polypeptide, and a method of producing L-leucine by culturing the microorganism.
    Type: Application
    Filed: October 20, 2017
    Publication date: January 30, 2020
    Inventors: Ji Hye LEE, Byeong Cheol SONG, Ae Ji JEON, Jong Hyun KIM, Hye Won KIM
  • Publication number: 20200025366
    Abstract: Disclosed herein are a fluid sand falling type circulating fluidized bed boiler with a plurality of risers for preventing erosion and corrosion of water tubes and increasing combustion efficiency, and a method of operating the same. The fluid sand falling type circulating fluidized bed boiler with a plurality of risers includes a boiler section into which fuel and oxidizer are injected, a riser section connected to the boiler section so that the fuel and fluid sand supplied from the boiler section are introduced from the bottom of the riser section and flow up, and a relay section provided on the boiler section to supply the fluid sand having passed through the riser section to the boiler section, wherein the fuel is injected from the top of the boiler section and burned while flowing down therein.
    Type: Application
    Filed: May 2, 2019
    Publication date: January 23, 2020
    Applicants: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, KOREA INSTITUTE OF ENERGY RESEARCH, KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Uen Do LEE, Byeong Ryeol BANG, Young Doo KIM, Soo Hwa JEONG, Chang Won YANG, Jae Goo LEE, Tae Young MUN, Myung Won SEO, Ji Hong MOON, Hyun Seol PARK, Joon Mok SHIM, Young Cheol PARK, Do Won SHUN, Jong Ho MOON, Dal Hee BAE, Sung Ho JO, Yun Tae HWANG, Sang In KEEL, Jin Han YUN, ChungKyu LEE, Pil Woo HEO
  • Patent number: 10542425
    Abstract: A method and an apparatus reduce overhead for data integrity checks in a wireless communication system. When receiving a message, a first Integrity Check Value (ICV) is compared with a second ICV to detect an integrity error in the message. When the integrity error exists in the message, a frequency of the integrity error is counted. When the frequency of the integrity error is more than a threshold, a key update procedure is performed. Therefore, the overhead of the information for integrity check may be reduced in the wireless communication system.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: January 21, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Kyo Baek, Ji-Cheol Lee, Jung-Je Son
  • Publication number: 20200013526
    Abstract: Provided is a power cable, particularly, an ultra-high voltage underground or submarine cable for long-distance direct-current transmission. More specifically, the present invention relates to a power cable, in which an insulating layer has high dielectric strength, an electric field applied to the insulating layer is effectively reduced, and particularly, a large void is suppressed from occurring in the insulating layer when the power cable is left at low temperatures for a long time until electric current is supplied thereto after installed in a low-temperature environment, thereby effectively preventing partial discharge, dielectric breakdown, etc. from occurring due to an electric field concentrated in the large void.
    Type: Application
    Filed: March 30, 2017
    Publication date: January 9, 2020
    Inventors: Ji Sung KIM, Weon Bae KIM, Kyoung Ro KO, Su Kil LEE, Joon Keun LEE, Soon Il SOHN, Kum Hwan CHA, Jae Cheol GWAG, Tae Hyun KIM
  • Patent number: 10530830
    Abstract: The present invention relates to an apparatus and a method for accessing the web in a network system in which pre-fetching of web pages is supported. To that end, when DNS processing is requested, a user terminal provides URL information to which a connection is anticipated to a proxy server via a DNS server. The proxy server can, via the DNS server and by means of the URL information received from the user terminal, pre-fetch information about a web page to which a connection is anticipated via a user terminal. That is, the proxy server configures a TCP session with a web server before a TCP session configuration request is received from the user terminal. Furthermore, by acquiring and storing necessary web page information before an HTTP request from the user terminal is received, the proxy server can immediately provide the web page information which has been in storage in response to an HTTP request from the user terminal.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: January 7, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ji-Cheol Lee
  • Patent number: 10517980
    Abstract: An air cleaner is provided to include a photocatalytic UV LED (57) installed on an UV LED substrate (55), and a photocatalytic filter installed on a surface facing the photocatalytic UV LED while being spaced apart from the UV LED substrate. The photocatalytic filter has a structure in which a photocatalytic material is coated on a base in which a plurality of cells (83) defining an air flow path in a direction toward the photocatalytic UV LED are arranged in parallel adjacent to each other.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: December 31, 2019
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Rack Kim, Jae Seon Yi, Ik Hwan Ko, Sang Hwan Byun, Sang Cheol Shin, Ji Won Kim, Seong Min Lee, Jae Hak Jeong
  • Publication number: 20190381122
    Abstract: Provided are a pharmaceutical composition including a Crepidiastrum denticulatum extract as an active ingredient; and a method for preventing or treating ischemia-reperfusion injury in a subject by using a food composition or the pharmaceutical composition.
    Type: Application
    Filed: August 29, 2019
    Publication date: December 19, 2019
    Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATION
    Inventors: Chu Won NHO, Hak Cheol KWON, Ji-Hye YOO, Jaeyoung KWON, Jin Soo PARK, Hyuk-Jai JANG, Seong-Su KIM, Cheon Soo PARK, Hwa-Mi LEE, Hee Ju LEE
  • Publication number: 20190373042
    Abstract: The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure may be applied to intelligent services based on 5G communication technology and IoT-related technology (e.g. smart homes, smart buildings, smart cities, etc.). A method for receiving image data for a virtual-reality streaming service by an electronic device according to an embodiment of the present invention comprises: a step in which the electronic device determines whether to execute an adaptive virtual-reality streaming service on the basis of a bandwidth state; and a step in which, if it is determined to execute the adaptive virtual-reality streaming service, the electronic device requests and receives, from a server, the image data for the adaptive virtual-reality streaming service on the basis of head-tracking information and bandwidth information collected in advance.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 5, 2019
    Inventors: Jung-Shin PARK, Joo-Hyung LEE, Ji-Cheol LEE, Han-Na LIM, Jin-Sung LEE, Hyung-Ho LEE