Patents by Inventor Cheol Lee

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: 11480974
    Abstract: Disclosed herein are an apparatus and method for generating a topological map for navigation of a robot. The method for generating a topological map for navigation of a robot, performed by the apparatus for building the topological map for the navigation of the robot, includes calculating the physical size of a single pixel on a metric map of a space in which a mobile robot is to navigate, extracting the physical coordinates of the pixel on the metric map, building node data and edge data for the navigation of the mobile robot using the physical coordinates, and generating a topological map for the navigation of the mobile robot based on the built node data and the built edge data.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: October 25, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yu-Cheol Lee, Won-Pil Yu, Song Li
  • Patent number: 11477633
    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: April 30, 2020
    Date of Patent: October 18, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-Cheol Lee, Song-Yean Cho, Sung-Ho Choi
  • Publication number: 20220325395
    Abstract: An aspect of the present invention is to provide high-strength ultra-thick steel with excellent cryogenic strain aging impact toughness at the center thereof, and a method for manufacturing same. An embodiment of the present invention provides high-strength ultra-thick steel with excellent cryogenic strain aging impact toughness at the center thereof, and a method for manufacturing same, the steel comprising, by wt %, 0.02-0.06% of C, 1.8-2.2% of Mn, 0.7-1.1% of Ni, 0.2-0.5% of Mo, 0.005-0.03% of Nb, 0.005-0.018% of Ti, 80 ppm or less of P, 20 ppm or less of S, and the remainder of Fe and other evitable impurities, wherein the average grain size of grains having a high boundary angle of 15 degrees or greater is 15 ?m or less as measured in a range of ?t-?t in the thickness (t) direction by EBSD.
    Type: Application
    Filed: September 25, 2020
    Publication date: October 13, 2022
    Applicant: POSCO
    Inventor: Hak-Cheol Lee
  • Publication number: 20220327067
    Abstract: A signal processing method of a semiconductor device, the method including: receiving a first digital code of a first digital signal; generating a constraint vector; masking the first digital code with a transmitting mask based on the constraint vector; and outputting the masked first digital code and a Data Bus Inversion (DBI) bit of the mask.
    Type: Application
    Filed: December 15, 2021
    Publication date: October 13, 2022
    Inventors: Chang Kyu SEOL, Byung-Suk WOO, Su Cheol LEE
  • Publication number: 20220313494
    Abstract: The present invention relates to an improved wound dressing member, characterized in that the improved wound dressing member is a laminate comprising: a main body having an opening formed in the central portion thereof, wherein the opening is operable and closable by means of a cover; a cover sheet laminated on top of the main body; a release paper laminated below the main body; and the cover sheet capable of opening or closing the opening by being form-fitted into the opening.
    Type: Application
    Filed: December 13, 2019
    Publication date: October 6, 2022
    Inventor: Keun Cheol LEE
  • Patent number: 11460920
    Abstract: A hybrid wave computer that computes an inputted original signal as frequency information includes: an input module configured to separate a frequency of the original signal by detecting an oscillation of an piezoelectric element by each position as the original signal having an embedded frequency of several bands is transmitted in a form of acoustic waves on a substrate provided with the piezoelectric element; a calculation module including at least one vibration amplifier or vibration damper for receiving the frequency of the original signal separated in the input module and amplifying or attenuating a wave for each frequency band to calculate the inputted original signal in a frequency band; and a storage module configured to store binarized frequency information in the calculation module as digital information, so that the original signal is interfaced in a form of waves.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: October 4, 2022
    Assignee: Daegu Gyeongbuk Institute of Science and Technology
    Inventors: Sang Cheol Lee, Woo Young Jung
  • Patent number: 11456900
    Abstract: Provided are a data receiving device and a corresponding method for receiving the data. The data receiving device comprises a path control logic configured to store L symbol paths, where L is a natural number equal to or greater than 2, L feedback filters configured to calculate L inter-symbol interferences (ISI) for the L symbol paths, respectively, L operators configured to remove the L inter-symbol interferences from an output of a feed-forward equalizer, and a path metric calculator configured to receive outputs of the L operators and calculate a path metric for each of the L symbol paths, wherein the path control logic is configured to select L values among the calculated path metrics for the L symbol paths to update the L symbol paths.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: September 27, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Kyu Seol, Byung-Suk Woo, Su Cheol Lee
  • Publication number: 20220301495
    Abstract: A data driver, a multi-channel sensing circuit and a sensing method thereof are provided. A multi-channel sensing circuit, where a configuration of a sample/hold circuit part is simplified to decrease a circuit area, and a sensing method of the multi-channel sensing circuit are provided. The multi-channel sensing circuit may include a first sample/hold circuit sampling and outputting a first sensing voltage, a second sample/hold circuit sampling and outputting a second sensing voltage, a share sample/hold circuit sampling and outputting a reference voltage, and an amplification part differential-amplifying the first sensing voltage output from the first sample/hold circuit and the reference voltage output from the share sample/hold circuit and differential-amplifying the second sensing voltage output from the second sample/hold circuit and the reference voltage output from the share sample/hold circuit.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 22, 2022
    Inventors: Taiming PIAO, Young Bok KIM, Won KIM, Byeon Cheol LEE
  • Patent number: 11442180
    Abstract: A method and a system for verifying integrity of GPS position information according to a disclosed embodiment is a method performed in an unmanned moving object including one or more processors and a memory for storing one or more programs executed by the one or more processors. The method includes an operation of performing an authentication process for a connected base station, by the unmanned moving object, an operation of measuring a position of the unmanned moving object by performing wireless communication with a plurality of authenticated base stations, and an operation of verifying the GPS position information by comparing a value of the measured position with a position value of the GPS position information received from a satellite.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: September 13, 2022
    Assignee: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Ji Sun Shin, Byung Woon Park, Shin Cheol Lee, Ye Bin Lee
  • Patent number: 11434557
    Abstract: Provided are a low-temperature steel plate having excellent impact toughness, and a method for manufacturing same, the low-temperature steel plate comprising, in wt %, 0.02-0.08% C, 6.0-7.5% Ni, 0.5-0.9% Mn, 0.03-0.15% Si, 0.02-0.3% Mo, and 0.1-0.3% Cr, and 50 ppm or less of P, 10 ppm or less of S, and the remainder in Fe and various unavoidable impurities, and the microstructure at ¼t (t: thickness of the steel plate) location of the steel plate comprising, in % surface area, 10-35% tempered bainite, 3-15% residual austenite, and the remainder in tempered martensite, and having granularity of 10 ?m or less of high angle grain boundaries at 15° or greater as measured by Electron Backscatter Diffraction (EBSD).
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: September 6, 2022
    Assignee: POSCO
    Inventor: Hak-Cheol Lee
  • Patent number: 11437723
    Abstract: An antenna apparatus may include: a substrate; two feed vias disposed in the substrate; and an antenna pattern disposed on one surface of the substrate, and including a central portion and wing portions protruding from the central portion. A first wing portion and a second wing portion adjacent to the first wing portion, among the wing portions, may be disposed over the two feed vias. The antenna apparatus may be configured to selectively provide a feed signal to either one or both of the two feed vias.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: September 6, 2022
    Assignees: Samsung Electro-Mechanics Co., Ltd., Seoul National University R&DB Foundation
    Inventors: Ju Hyoung Park, Won Cheol Lee, In Seop Yoon, Jung Woo Seo, Jung Suek Oh
  • Publication number: 20220258558
    Abstract: An embodiment relates to a heat management device for a vehicle and a heat management method for a vehicle, which use a branch line and a flow control means to use heat generated from a battery module of a vehicle or a heat generated from an electrical component of the vehicle as a heat source for an air conditioning device installed in the vehicle. Therefore, the heat management device for a vehicle and the heat management method for a vehicle may improve heating performance and quality by selectively using waste heat from the electrical component module and the waste heat from the battery depending on the mode.
    Type: Application
    Filed: July 15, 2020
    Publication date: August 18, 2022
    Inventors: Jae Min LEE, Young Chul KIM, In Hyeok KIM, Kyeong Cheol LEE
  • Patent number: 11417959
    Abstract: A chip antenna module includes: a solder layer disposed on a lower surface of the first dielectric layer; a first patch antenna pattern disposed on upper surface of the first dielectric layer and having a through-hole; a second patch antenna pattern spaced apart from an upper surface of the first patch antenna pattern and having an area less than an area of the first patch antenna pattern; a first feed via extending through the first dielectric layer and electrically connected to the first patch antenna pattern; a second feed via extending through the first dielectric layer and the through-hole, and electrically connected to the second patch antenna pattern; and shielding vias extending through the first dielectric layer, electrically connected to the first patch antenna pattern, and at least partially surrounding the second feed via.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: August 16, 2022
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ju Hyoung Park, Won Cheol Lee, Sung Yong An, Kyu Bum Han
  • Publication number: 20220254289
    Abstract: A multi-channel voltage sensing circuit for pixel compensation includes a plurality of channel circuits arranged for multiple channels; and a first dummy channel circuit and a second dummy channel circuit disposed among the plurality of channel circuits with some channel circuits interposed therebetween, wherein the first dummy channel circuit and the second dummy channel circuit receive a first reference voltage of a fixed level, and provide electrical coupling to adjacent channel circuits.
    Type: Application
    Filed: January 31, 2022
    Publication date: August 11, 2022
    Applicant: LX Semicon Co., Ltd.
    Inventors: Taiming PIAO, Won KIM, Seong Geon KIM, Young Ho SHIN, Byeon Cheol LEE
  • Publication number: 20220238934
    Abstract: The battery module according to one embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells are stacked; and a sensing assembly located on the battery cell stack. The sensing assembly includes a main body located on the battery cell stack and a module connector connected to the main body. The main body is a flexible printed circuit (FPC) or a flexible flat cable (FFC), and the main body includes a heating wire circuit.
    Type: Application
    Filed: July 15, 2020
    Publication date: July 28, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Taehwan Roh, Jong Cheol Lee, Chang Hyun Sung, Geunhoe Huh
  • Publication number: 20220224018
    Abstract: An antenna module includes: an IC package including an IC; first and second antenna portions including respective patch antenna patterns, respective feed vias connected to the respective patch antenna patterns, and respective dielectric layers surrounding the respective feed vias; and a connection member having an upper surface on which the first and second antenna portions are disposed and a lower surface on which the IC package is disposed, the connection member forming an electrical connection path between the IC and the feed via of the first antenna portion and an electrical connection path of the second antenna portion. The connection member includes a first region disposed between the IC package and the first antenna portion, a second region on which the second antenna portion is disposed, and a third region electrically connecting the first and second regions and being more flexible than the dielectric layer of the first antenna portion.
    Type: Application
    Filed: April 1, 2022
    Publication date: July 14, 2022
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Myeong Woo HAN, Ju Hyoung PARK, Dae Ki LIM, Jeong Ki RYOO, Won Cheol LEE, Nam Ki KIM
  • Publication number: 20220204671
    Abstract: The present invention relates to a fluorinated acrylate-based copolymer and to a photosensitive resin composition comprising the same. The copolymer can have excellent water repellency even with a relatively low content of fluorine by introducing a non-polar ring-containing unit, so that it can prevent coating imbalance and decreases in the pattern strength that may occur when the fluorine content is high.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 30, 2022
    Inventors: Kyung-Jae Park, Seung-Keun Kim, Kyu-Cheol Lee
  • Publication number: 20220200622
    Abstract: A data transmission method for transmitting a data signal using four data signal levels during a unit interval and transmitting a data bus inversion (DBI) signal using two DBI signal levels during the unit interval, the method including: receiving n (n is a natural number) data, each of the n data including a first bit and a second bit; counting the number of data in which the first bit and the second bit have the same value among the n data; in response to the counting result being less than or equal to a predetermined number, transmitting the n data using the four data signal levels, together with a DBI signal having a first DBI signal level; and in response to the counting result being greater than the predetermined number, transmitting data, which is obtained by changing a value of either of the first bit and the second bit of the n data, using the four data signal levels, together with a DBI signal having a second DBI signal level different from the first DBI signal level.
    Type: Application
    Filed: August 30, 2021
    Publication date: June 23, 2022
    Inventors: Byung-Suk WOO, Chang Kyu Seol, Su Cheol Lee
  • Publication number: 20220193312
    Abstract: An automatic urine treatment system according to an embodiment of the present invention includes a receiver for receiving wearer's excrement; a main body including a urine tank for receiving and storing urine from the receiver, and a vacuum pump for sucking air into the urine tank and transferring a negative pressure to the receiver; and a first connecting hose connecting the receiver and the urine tank. A strip accommodation unit for accommodating a strip for analyzing components of the stored urine through color change is formed inside the urine tank, and on the outer surface of the urine tank, urine analysis is performed using a first optical sensor unit for sensing color change of the strip, and a second optical sensor unit for sensing at least one among turbidity and color change of the stored urine. There is an advantage of being able to confirm the health condition of disabled or elderly people in real-time through the urine information analyzed in this way.
    Type: Application
    Filed: January 12, 2021
    Publication date: June 23, 2022
    Inventors: Ui Cheol LEE, Tae Hyun KIM, Jung Hwan KIM, Bo Ho LEE
  • Patent number: D956842
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: July 5, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Ji-A Lee, Byung-Ho Yoon, Byeong-Cheol Lee, Seok-Young Youn