Patents by Inventor Seung Chul Lee
Seung Chul 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).
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Publication number: 20240145935Abstract: An antenna apparatus includes: a parabolic reflector; a dielectric support pedestal; a sub-reflector connected to an upper part of the dielectric support pedestal; and a waveguide connected to a lower part of the dielectric support pedestal, wherein the parabolic reflector has a curved surface in which a ratio of a focal length to a diameter is greater than a preset value, and at least one corrugation configured to suppress a cross polarization is formed in a region of the dielectric support pedestal.Type: ApplicationFiled: October 31, 2022Publication date: May 2, 2024Inventors: Byung Chul PARK, Seung Ho KIM, Kun Sup KWON, Jong Wan HEO, Sung Jae LEE, Ki Min HWANG
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Publication number: 20240137511Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.Type: ApplicationFiled: January 4, 2024Publication date: April 25, 2024Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Jin-Ho LEE, Jung-Won KANG, Hyunsuk KO, Sung-Chang LIM, Dong-San JUN, Ha-Hyun LEE, Seung-Hyun CHO, Hui-Yong KIM, Hae-Chul CHOI, Dae-Hyeok GWON, Jae-Gon KIM, A-Ram BACK
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Patent number: 11965936Abstract: A battery diagnosis apparatus for diagnosing a battery including battery cells, the apparatus according to an embodiment may include a voltage measurer for measuring the voltage of each battery cell during a preset period of time, a voltage variation calculator for calculating an individual voltage variation of each battery cell during the preset period of time, an average voltage variation calculator for calculating an average voltage variation of the battery cells during the preset period of time, and an abnormality detector for determining that a voltage abnormality has occurred in at least one battery cell among the battery cells when a difference between the voltage variation of the at least one battery cell and the average voltage variation of the at least one battery cell is greater than a threshold value.Type: GrantFiled: July 23, 2020Date of Patent: April 23, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hyun Chul Lee, Dong Keun Kwon, Sung Yul Yoon, Seung Hyun Kim, An Soo Kim
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Patent number: 11949881Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.Type: GrantFiled: April 1, 2021Date of Patent: April 2, 2024Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong UniversityInventors: Se-Yoon Jeong, Hae-Chul Choi, Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Jae-Gon Kim, Kyung-Ae Moon, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Yung-Lyul Lee, Dong-Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Dae-Yeon Kim, Dong-Kyun Kim
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Patent number: 11948808Abstract: A method for manufacturing a semiconductor device and a semiconductor device produced thereby. For example and without limitation, various aspects of this disclosure provide a method for manufacturing a semiconductor device, and a semiconductor device produced thereby, that comprises an interposer without through silicon vias.Type: GrantFiled: December 6, 2021Date of Patent: April 2, 2024Assignee: AMKOR TECHNOLOGY SINGAPORE HOLDING PTE. LTD.Inventors: Dong Jin Kim, Jin Han Kim, Won Chul Do, Jae Hun Bae, Won Myoung Ki, Dong Hoon Han, Do Hyung Kim, Ji Hun Lee, Jun Hwan Park, Seung Nam Son, Hyun Cho, Curtis Zwenger
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Patent number: 11941923Abstract: An automation method of an artificial intelligence (AI)-based diagnostic technology for equipment application includes receiving one or more pieces of data among vibration data, noise data, and controller area network (CAN) data, a data input processing operation of trimming the input data, an operation of extracting features from the trimmed data, setting a setting value of a hyper-parameter with respect to the one or more pieces of data thereamong, and generating a total of N models to include both of machine learning (ML) and deep learning (DL) as N individual models and generating ensemble prediction model structures for the N individual models. As a parameter updating is being proceeded due to the hyper-parameter so as to minimize values of cost functions of the N individual models, a reward for model accuracy performance is optimized and the ensemble prediction model structures of the N individual models change.Type: GrantFiled: October 22, 2021Date of Patent: March 26, 2024Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: In-Soo Jung, Seung-Hyun Lee, Jae-Min Jin, Dong-Chul Lee
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Patent number: 11932549Abstract: It is introduced that a device of manufacturing lithium sulfate comprising: a reaction body in which a reaction of lithium phosphate and sulfuric acid is performed, the reaction body being divided into an upper space and a lower space; a pressurizer for applying pressure to the inside of the reaction body; a stirrer disposed in the upper space for stirring the lithium phosphate and sulfuric acid to produce a mixture containing lithium sulfate and phosphoric acid; and a filter disposed inside the reaction body and separating the filtrate containing the phosphoric acid into the lower space by filtering the mixture.Type: GrantFiled: August 2, 2019Date of Patent: March 19, 2024Assignees: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGYInventors: Juyoung Kim, Ki Young Kim, Woonkyoung Park, Jung Kwan Park, Woo Chul Jung, Kwang Seok Park, Hyun Woo Lee, Sang Won Kim, Heok Yang, Seung Taek Kuk
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Publication number: 20240088416Abstract: An air supply control method of a fuel cell controls an amount of air supplied to the fuel cell according to an output of power required to be generated by the fuel cell. The method includes steps of: monitoring a charging level of a power storage device that stores power output from the fuel cell; modifying the amount of air supplied to the fuel cell on the basis of the monitored charging level of the power storage device; and controlling an air supply system that supplies air to the fuel cell on the basis of the modified amount of air supplied.Type: ApplicationFiled: November 17, 2023Publication date: March 14, 2024Inventors: Seung Yoon Lee, Sae Byeok Seung, Jeong Kyu Park, Sang Chul Yeom
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Publication number: 20240085101Abstract: A refrigerant cycle pressure control system includes: a heat exchanger cooling boil-off gas received from a storage tank; a refrigerant cycle including a refrigerant circulation line, a refrigerant compressor, and an expander; an inventory tank storing the refrigerant to be charged to the refrigerant cycle; a refrigerant supply line connecting the inventory tank to an upstream side of the refrigerant compressor to replenish the refrigerant cycle with the refrigerant; a refrigerant discharge line connecting a downstream side of the refrigerant compressor to the inventory tank to discharge the refrigerant from the refrigerant cycle to the inventory tank; and a pressure regulation line branched off of the refrigerant discharge line. The refrigerant cycle is depressurized by discharging the refrigerant from the refrigerant cycle through the refrigerant discharge line or the pressure regulation line.Type: ApplicationFiled: December 24, 2021Publication date: March 14, 2024Inventors: Hye Min Jung, Seon Jin Kim, Won Jae Choi, Seung Chul Lee
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Patent number: 11914145Abstract: Disclosed in the present invention is a floating hologram system. The floating hologram system includes a diffuser configured to form a projection image using light beams transmitted from an image transmitter and diffuse the formed image, and a holographic optical element on which the image diffused from the diffuser is incident and which generates a virtual image floating at a position a predetermined distance therefrom and has a convex lens characteristic. A distance between the diffuser and the holographic optical element is determined based on a focal length of the holographic optical element and a distance from the holographic optical element to the virtual image.Type: GrantFiled: December 10, 2020Date of Patent: February 27, 2024Assignee: KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATIONInventors: Seung Hyun Lee, Lee Hwan Hwang, Jae Hyun Lee, Sung Jae Ha, Soon Chul Kwon, Kwang Pyo Hong
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Patent number: 11917148Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.Type: GrantFiled: February 8, 2022Date of Patent: February 27, 2024Assignees: Electronics And Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Hanbat National University Industry-Academic Cooperation FoundationInventors: Jin-Ho Lee, Jung-Won Kang, Hyunsuk Ko, Sung-Chang Lim, Dong-San Jun, Ha-Hyun Lee, Seung-Hyun Cho, Hui-Yong Kim, Hae-Chul Choi, Dae-Hyeok Gwon, Jae-Gon Kim, A-Ram Back
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Patent number: 11811414Abstract: A comparator circuit has a pre-charging and early reset output stage. The comparator circuit includes: a first pre-charging transistor and a second pre-charging transistor. A gate of the first pre-charging transistor is connected to a pre-charging signal, and a gate of the second pre-charging transistor is connected to a main clock signal, wherein the pre-charging signal is enabled earlier than the main clock signal. At a pre-charging phase, there is a small electric current, and a comparator slowly amplifies an input small signal to reduce noise; and the electric current is increased after a certain time delay, such that on the basis of pre-charging, the comparator rapidly completes a pre-amplification phase and then enters a regeneration phase.Type: GrantFiled: August 9, 2021Date of Patent: November 7, 2023Assignee: JOYWELL SEMICONDUCTOR (SHANGHAI) CO., LTD.Inventors: Minqing Cai, Yufeng Yao, Yunlong Ge, Haonan Wang, Seung Chul Lee
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Patent number: 11811400Abstract: The present invention discloses a circuit for improving linearity and channel compensation of PAM4 receiver analog front end, comprising a first stage and a second stage, the first stage comprising first to twentieth transistors, a first resistor, a pair of second resistors, a pair of first capacitors, and a pair of second capacitors. In the first stage circuit, the ninth and tenth transistors are directly coupled to the ground, eliminating the electrical connection to the bias current source. The Input terminals of the ninth and tenth transistors are coupled to the output signals of the preceding nineteenth and twentieth transistors, so that the ninth and tenth transistors serve as both input pairs and current source transistors. The overall current is limited by the thirteenth and fourteenth transistors, which results in a lower power supply voltage for the first stage consisting of the ninth through fourteenth transistors.Type: GrantFiled: April 18, 2022Date of Patent: November 7, 2023Assignee: JOYWELL SEMICONDUCTOR (SHANGHAI) CO., LTD.Inventors: Yufeng Yao, Minqing Cai, Haonan Wang, Yunlong Ge, Seung Chul Lee
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Publication number: 20230344420Abstract: A comparator circuit has a pre-charging and early reset output stage. The comparator circuit includes: a first pre-charging transistor and a second pre-charging transistor. A gate of the first pre-charging transistor is connected to a pre-charging signal, and a gate of the second pre-charging transistor is connected to a main clock signal, wherein the pre-charging signal is enabled earlier than the main clock signal. At a pre-charging phase, there is a small electric current, and a comparator slowly amplifies an input small signal to reduce noise; and the electric current is increased after a certain time delay, such that on the basis of pre-charging, the comparator rapidly completes a pre-amplification phase and then enters a regeneration phase.Type: ApplicationFiled: August 9, 2021Publication date: October 26, 2023Inventors: Minqing CAI, Yufeng YAO, Yunlong GE, Haonan WANG, Seung Chul LEE
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Publication number: 20230336175Abstract: The present invention discloses a circuit for improving linearity and channel compensation of PAM4 receiver analog front end, comprising a first stage and a second stage, the first stage comprising first to twentieth transistors, a first resistor, a pair of second resistors, a pair of first capacitors, and a pair of second capacitors. In the first stage circuit, the ninth and tenth transistors are directly coupled to the ground, eliminating the electrical connection to the bias current source. The Input terminals of the ninth and tenth transistors are coupled to the output signals of the preceding nineteenth and twentieth transistors, so that the ninth and tenth transistors serve as both input pairs and current source transistors. The overall current is limited by the thirteenth and fourteenth transistors, which results in a lower power supply voltage for the first stage consisting of the ninth through fourteenth transistors.Type: ApplicationFiled: April 18, 2022Publication date: October 19, 2023Inventors: Yufeng YAO, Minqing CAI, Haonan WANG, Yunlong GE, Seung Chul LEE
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Patent number: 11760462Abstract: Disclosed is a re-liquefying device using a boil-off gas as a cooling fluid so as to re-liquefy the boil-off gas generated from a liquefied gas storage tank provided in a ship. A boil-off gas re-liquefying device for a ship comprises: a multi-stage compression unit for compressing boil-off gas generated from a liquefied gas storage tank; a heat exchanger in which the boil-off gas generated from the storage tank and the boil-off gas compressed exchange heat; a vaporizer for heat exchanging the boil-off gas cooled by the heat exchanger and a separate liquefied gas supplied to a fuel demand source of a ship, and thus cooling the boil-off gas; an intermediate cooler for cooling the boil-off gas that has been cooled by the heat exchanger; and an expansion means for branching a part of the boil-off gas, which is supplied to the intermediate cooler, and expanding the same.Type: GrantFiled: October 29, 2020Date of Patent: September 19, 2023Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.Inventors: Hyun Jun Shin, Su Kyung An, Seung Chul Lee
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Publication number: 20230274871Abstract: A transformer core, comprising a first yoke, a second yoke, a column (6) having a column main axis (8) and extending between the first yoke and the second yoke, and an elongate clamping structure (10) comprising an elongate rigid member (12) having a rigid member main axis (14) is provided. The column (6) includes an elongate opening (16) having an opening main axis (18) which is oriented transversal with respect to the column main axis (8). The rigid member (12) is positioned within the elongate opening (16) such that the rigid member main axis (14) is oriented parallel to the opening main axis (18).Type: ApplicationFiled: August 3, 2021Publication date: August 31, 2023Inventors: Luigi de-Mercato, Seung-Chul Lee, Jong-Min Leem
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Publication number: 20230160993Abstract: A method and system for generating a target map for training a neural network and obtaining a sound source map regardless of the maximum number of sound sources, having a short computation time for inference, high spatial resolution and high sound source accuracy. The method includes generating grids each having a spacing within a given range at positions where sound sources are present in order to form a sound source map, calculating a result value for each of coordinates of the grids so that the result value is a local maximum at the position of a sound source and the result value decreases depending on the distance from the sound source, arranging the result values at positions on matrices corresponding to the respective coordinates of the grids, and generating a target map having an image form by using the result values arranged in on the matrices.Type: ApplicationFiled: May 27, 2021Publication date: May 25, 2023Inventors: Ji Ho CHANG, Seung Chul LEE, Soo Young LEE
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Publication number: 20220389309Abstract: The present disclosure relates to a perovskite light-emitting composition, and a method for preparing the same. The method for producing the perovskite light-emitting composition of the present disclosure includes an organic siloxane solvent having very high hydrophobicity and low surface tension as a synthesis solvent, thereby having a large surface tension difference from the perovskite light-emitting particles containing an organic ligand. Through these properties, a dense organic ligand can be attached to the surface of the perovskite nanoparticles, and perovskite light-emitting particles having a high ligand density can be prepared. Accordingly, the perovskite light-emitting particles prepared by the method of the present disclosure have improved dispersion stability, light-emitting properties and long-term storage stability.Type: ApplicationFiled: March 31, 2022Publication date: December 8, 2022Inventors: Tae-Woo LEE, Seung-Chul LEE, Song-Hee LEE, Sinil CHOI, Jae Il KIM
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Publication number: 20220388215Abstract: An artificial intelligence-based injection molding system in which molding conditions can be changed to manufacture fair-quality products when defective products are manufactured because of disturbances during the injection molding including an injection molding machine which performs injection molding by injecting a molding material into a mold; an injection state data acquisition unit for acquiring, during injection molding, current injection state data that includes the viscosity profile of the molding material injected into the mold and/or the injection pressure value thereof; a determination unit, which inputs the current injection state data into a molding quality maintenance model trained with predetermined target injection state data, so as to determine whether to maintain molding quality; and a molding condition setting unit for changing a preset molding condition so that the current injection state data follows the target injection state data, when the determination unit determines not to maintain tType: ApplicationFiled: November 3, 2020Publication date: December 8, 2022Inventors: Hyeon Jae YU, Kyong Ho PARK, Andrey SALOV, Seung Chul LEE, Chi Hun LEE