Patents by Inventor Dae-Woo Lee

Dae-Woo 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: 20250069609
    Abstract: An encoding apparatus and a decoding apparatus in a transform between a Modified Discrete Cosine Transform (MDCT)-based coder and a different coder are provided. The encoding apparatus may encode additional information to restore an input signal encoded according to the MIDCT-based coding scheme, when switching occurs between the MDCT-based coder and the different coder. Accordingly, an unnecessary bitstream may be prevented from being generated, and minimum additional information may be encoded.
    Type: Application
    Filed: November 15, 2024
    Publication date: February 27, 2025
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Seung Kwon BEACK, Tae Jin LEE, Min Je KIM, Dae Young JANG, Kyeongok KANG, Jin Woo HONG, Ho Chong PARK, Young-cheol PARK
  • Publication number: 20250066925
    Abstract: A method of manufacturing interior parts for a vehicle includes: forming a first plating layer on a surface of an injection molded product through electroless plating; printing a symbol part on the first plating layer; partially removing the first plating layer to a size corresponding to the symbol part from a rear surface of the injection molded product; forming a second plating layer on the first plating layer; and removing the symbol part and the first plating layer from the surface of the injection molded product on which the second plating layer is formed.
    Type: Application
    Filed: December 15, 2023
    Publication date: February 27, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, BS TECHNICS CO.,LTD., ALPS ELECTRIC KOREA CO.,LTD.
    Inventors: Young Ju Lee, Kwang Pyo Cho, Hong Sik Chang, Seung Sik Han, Young Jai Im, Jun Sik Kim, Young Do Kim, Jung Sik Choi, Tae Kyoung Jung, In Ho Park, Seon Dong Kim, Dae Woo Park
  • Patent number: 12234169
    Abstract: A centrifugal dehydrator according to an embodiment of the present disclosure for solving the above problems includes: a slurry flow tube through which slurry, in which polymers and water are mixed, flows; a gas flow tube through which a gas flows; a mixture flow tube which is connected from the slurry flow tube and the gas flow tube and through which a mixture of the slurry and the gas flows; a basket into which the mixture is injected from the mixture flow tube and which rotates to apply centrifugal force to the slurry in the mixture; a driving part that allows the basket to rotate; and a porous plate disposed on a peripheral portion of the basket to discharge the water from the slurry to the outside of the basket.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: February 25, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Sung Woo Jeong, In Yong Jeong, Sang Ho Lee, Eun Jung Joo, Dae Young Shin
  • Patent number: 12234307
    Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having a high weight average molecular weight and narrow molecular weight distribution, and at the same time, a reduced characteristic relaxation time, thereby showing excellent physical properties, and a method for preparing the same. A resin composition having improved volume resistance and excellent light transmittance may be prepared by using such ethylene/alpha-olefin copolymer. Accordingly, the ethylene/alpha-olefin copolymer may be utilized in various uses in electrical and electronic industrial fields.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: February 25, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Young Woo Lee, Seul Ki Kim, Dae Woong Lee, Jin Kuk Lee, Eun Jung Lee, Jin Sam Gong, Jung Ho Jun, Jun Hyuk Lee
  • Publication number: 20250058476
    Abstract: A working robot operating system and method are provided. The system includes a plurality of working robots each configured to perform a work process involving deterioration of a working part and a repair process of repairing the deterioration of the working part. The system also includes a control device configured to determine an existing performance schedule in which the repair process of each of the plurality of working robots is performed based on production information of a product and specification information of a working part for each working robot. The control device is also configured to determine an optimal performance schedule of the repair process for each of the plurality of working robots based on the determined existing performance schedule, and to control the plurality of working robots so that the repair process is performed by following the determined optimal performance schedule.
    Type: Application
    Filed: January 18, 2024
    Publication date: February 20, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Seong Sul Lee, Yeon Woo Song, Seung Ho Lee, Sun Hoon Kim, Yoon Soo Kim, Dae Won Lee
  • Publication number: 20250042267
    Abstract: An AC power output device includes a switching component connected to each of a plurality of batteries and configured to turn ON or OFF an electrical connection between a corresponding battery and another battery depending on an operational state, a filter component configured to receive an output voltage from the plurality of batteries, to adjust a polarity of the output voltage from the plurality of batteries according to an operational state, and to output the voltage of the adjusted polarity, and a controller configured to control the operational states of the switching component and the filter component so that the AC power is output from the plurality of batteries.
    Type: Application
    Filed: August 2, 2024
    Publication date: February 6, 2025
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Dae-Woo LEE, Young-Bo CHO, Jin-Seok HEO, Kwang-Seob KIM
  • Patent number: 12211393
    Abstract: The present disclosure relates to a coding test device and a coding test method. The coding test device according to one embodiment includes a problem provider for providing a test problem including an initial condition to a user terminal, a code receiver for receiving first algorithm code corresponding to the initial condition from the user terminal, and an additional condition provider for determining whether a predetermined passing condition for the first algorithm code is satisfied and providing an additional condition related to the initial condition to the user terminal based on the result of determination for the first algorithm code.
    Type: Grant
    Filed: May 2, 2023
    Date of Patent: January 28, 2025
    Assignee: JA-IN Lab. Co., Ltd
    Inventors: Hyung Woo Lee, Dae Seok Shin, Dae Sung Jang, Seong In Kim, Hyung Woo Kim, Byoung Ho Lee, Hyeon Ho Lee
  • Patent number: 12205599
    Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.
    Type: Grant
    Filed: June 21, 2023
    Date of Patent: January 21, 2025
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
    Inventors: Tae Jin Lee, Seung-Kwon Baek, Min Je Kim, Dae Young Jang, Jeongil Seo, Kyeongok Kang, Jin-Woo Hong, Hochong Park, Young-Cheol Park
  • Patent number: 12129318
    Abstract: The present invention relates to a method for preparing a vinyl chloride-based polymer, including: bulk polymerizing a vinyl chloride-based monomer in a polymerization reactor to prepare a vinyl chloride-based polymer; and adding water and vapor to the polymerization reactor, and heating to remove an unreacted vinyl chloride-based monomer, wherein an addition amount of the water is 0.500 to 5.000 parts by weight based on 100 parts by weight of the vinyl chloride-based polymer.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: October 29, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Kun Ji Kim, Seong Yong Ahn, Heung Kwon Bae, Se Woong Lee, Dae Woo Lee, Hyun Kyou Ha
  • Publication number: 20240357903
    Abstract: A display device includes a display panel including a first non-bending area, a bending area extending from the first non-bending area, and a second non-bending area extending from the bending area, an adhesive layer disposed in the first non-bending area, a window connected to the display panel through the adhesive layer, the window including a base substrate, a light blocking pattern disposed on the base substrate, and a protrusion pattern disposed on at least a portion of the light blocking pattern, and a reinforcing layer surrounding at least a portion of the bending area.
    Type: Application
    Filed: January 22, 2024
    Publication date: October 24, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Min Hee PARK, Kyung Hoon CHAE, Dae Woo LEE, So Yeon JOO, Hyeon Deuk HWANG
  • Patent number: 12113447
    Abstract: An embodiment apparatus includes a converter including a plurality of switching elements configured as a bridge circuit connected to an input terminal and having a plurality of bridge arms, wherein a topology of the converter is configured to be switchable to a full-bridge type topology or a half-bridge type topology, and wherein a resonant capacitor is connected to a midpoint between respective ones of the bridge arms, and a controller configured to switch the topology of the converter to the full-bridge type or the half-bridge type by controlling whether the resonant capacitor is activated based on a load current of the converter.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: October 8, 2024
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Dae Woo Lee, Tae Jong Ha, Byung Gu Kang
  • Patent number: 12101031
    Abstract: The present disclosure relates to an apparatus and a method for controlling an LLC resonance converter. The apparatus includes a converter connected to an input terminal, including a plurality of switching elements constituting a bridge circuit, and enabling a topology change in the form of a full bridge and a half bridge; and a controller detecting a charge measurement value of a battery being charged with a power transferred by the converter, and changing a topology of the converter based on the charge measurement value. Since battery charging is performed by changing the topology of the converter in accordance with the charge measurement value of the battery, the LLC resonance converter can be controlled at an optimized frequency, the efficiency is increased, and cost savings can be achieved.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: September 24, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Min Seong Choi, In Yong Yeo, Dae Woo Lee, Jin Young Yang
  • Publication number: 20240178760
    Abstract: An embodiment voltage converter includes a DC-DC converter and a controller. The DC-DC converter includes a transformer, a main switch connected to an input terminal and the transformer, and first and second synchronous rectification switches connected to an output terminal and the transformer, and the controller is configured to switch the main switch so that the DC-DC converter adjusts a voltage of the input terminal and outputs the voltage to the output terminal and to complementarily switch the first and second synchronous rectification switches without dead time.
    Type: Application
    Filed: March 9, 2023
    Publication date: May 30, 2024
    Inventors: Jun Young Lee, Byung Gu Kang, Dae Woo Lee, Tae Jong Ha
  • Publication number: 20240162824
    Abstract: An embodiment vehicle includes a DC/DC converter having a first power terminal connected to a first electrode of a first battery, a second power terminal connected to a first electrode of a second battery, and a load terminal connected to a first end of an electric load, and including a switching circuit, a transformer, and a rectifier circuit, and a controller configured to set an operation mode of the DC/DC converter to a low-voltage DC/DC converter (LDC) mode or a state-of-charge (SOC) balancing mode, wherein the DC/DC converter is configured to step down a voltage of the first power terminal through the switching circuit, the transformer, and the rectifier circuit and output the voltage to the load terminal when the LDC mode is performed and to control power transfer between the first and second power terminals through the switching circuit when the SOC balancing mode is performed.
    Type: Application
    Filed: April 14, 2023
    Publication date: May 16, 2024
    Inventors: Tae Jong Ha, Jun Young Lee, Dae Woo Lee, Byung Gu Kang
  • Publication number: 20240150504
    Abstract: The present disclosure relates to a method of preparing a polymer, which includes: adding an alkyl-substituted aromatic vinyl-based monomer and a vinyl cyanide-based monomer to a reactor and initiating polymerization; and performing polymerization while continuously adding an alkyl-substituted aromatic vinyl-based monomer and a multifunctional initiator to the reactor, wherein the continuous addition of the alkyl-substituted aromatic vinyl-based monomer and the multifunctional initiator is initiated when a polymerization conversion rate is 10 to 30%, and the continuous addition of the alkyl-substituted aromatic vinyl-based monomer and the multifunctional initiator is terminated when a polymerization conversion rate is 70 to 80%.
    Type: Application
    Filed: January 17, 2023
    Publication date: May 9, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Sung Won HONG, Hyung Sub LEE, Dae Woo LEE, Woo Ri KIM, Min Cheol JU, Min Seung SHIN, In Soo KIM
  • Patent number: 11967448
    Abstract: A planar transformer may include a primary printed circuit board (PCB) having at least a hole in which a first core and a second core are inserted and including a coil pattern, a secondary PCB having at least a hole in which the first core and the second core are inserted and including a coil pattern, and a heat dissipation plate disposed between the primary PCB and the secondary PCB and including at least a hole in which the first core and the second core are inserted.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: April 23, 2024
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Dae Woo Lee
  • Publication number: 20240105378
    Abstract: A planar transformer and a converter including the same include a first core unit including a first receiving portion extending in a first direction; a second core unit spaced from the first core unit, disposed in parallel with the first core unit in a second direction thereof, and including a second receiving portion extending in the first direction; a first coil unit including a first through hole formed in a center portion thereof and a first coil pattern passing through the first receiving portion and the second receiving portion around the first through hole to form a turn; and a second coil unit including a second through hole formed in a center portion thereof and aligned with the first through hole in a third direction thereof, and a second coil pattern passing through the first receiving portion and the second receiving portion around the second through hole.
    Type: Application
    Filed: January 19, 2023
    Publication date: March 28, 2024
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Dae Woo LEE, Sang Jin KIM, Tae Jong HA, Byung Gu KANG
  • Patent number: 11884808
    Abstract: The present invention relates to a thermoplastic resin composition, which includes a first copolymer formed by polymerizing a monomer mixture of a (meth)acrylate-based monomer, a vinyl cyan-based monomer and a maleimide-based monomer, and having a refractive index of 1.5170 or less and a glass transition temperature of 115.0° C. or more; and a second copolymer formed by graft-copolymerizing an aromatic vinyl-based monomer and a vinyl cyan-based monomer onto an acrylic rubber polymer, and the thermoplastic resin composition according to the present invention has improved heat resistance, colorability and scratch resistance.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: January 30, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jung Tae Park, Dae Woo Lee, Jae Bum Seo, Gyu Sun Kim, Ji Uk Jang
  • Publication number: 20240017629
    Abstract: An embodiment is battery charging system including an external voltage conversion device including an input unit configured to receive a system AC voltage, an output unit configured to output a charging DC voltage, and a power factor correction circuit including a first switching circuit connected to the input unit, a second switching circuit connected to the output unit, and a transformer connected between the first switching circuit and the second switching circuit, and an electrified vehicle including a charging port configured to receive the charging DC voltage, a battery, a motor having a plurality of windings, an inverter connected to each of one-side ends of the plurality of windings, and a relay connected between the charging port and a neutral terminal for the plurality of windings, the electrified vehicle controlling the relay upon recharging of the battery.
    Type: Application
    Filed: November 11, 2022
    Publication date: January 18, 2024
    Inventors: Si Hun Yang, Jin Young Yang, In Yong Yeo, Jong Eun Byun, Sang Jin Kim, Dae Woo Lee, Min Seong Choi
  • Patent number: D1055336
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: December 24, 2024
    Inventors: Oh Young Kwon, Byung Kyu Park, Hwan Wook Baek, Dae Woo Lee