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公开(公告)号：US12257925B2
公开(公告)日：2025-03-25
申请号：US18054742
申请日：2022-11-11
Applicant: Foundation for Research and Business, Seoul National University of Science and Technology , Hyundai Motor Company , Kia Corporation
Inventor： In Yong Yeo , Youn Sik Lee , Se Wan Choi
Abstract: A power conversion system includes: a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle; an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and a power converter connected to auxiliary battery, the power converter comprising a bypass circuit and a buck converter. The buck converter includes a buck switch, and is configured to convert a voltage of the auxiliary battery into a voltage for recharging the main battery in accordance with an ON/OFF switching operation of the buck switch.
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公开(公告)号：US20240396559A1
公开(公告)日：2024-11-28
申请号：US18420807
申请日：2024-01-24
Applicant: Foundation for Research and Business, Seoul National University of Science and Technology
Inventor： Won Young Lee , Hyun Bin Lee
Abstract: Proposed is an apparatus for a digital clock and data recovery. The apparatus includes a frequency detector for detecting a high frequency (FH) signal, a low frequency (FL) signal and ultra-high frequency (FUH) signal by determining the relationship between an input data rate and a clock frequency, and generating a continuous frequency up (CFUP) signal and a continuous frequency down (CFDN) signal based on the FH, FL and FUH signals; and a digital loop filter (DLF) for controlling to adjust a clock frequency in a coarse adjustment stage using the CFUP and CFDN signals and to adjust a clock frequency in a fine adjustment stage using the FH and FL signals.
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公开(公告)号：US12090696B2
公开(公告)日：2024-09-17
申请号：US17963117
申请日：2022-10-10
Applicant: Foundation for Research and Business, Seoul National University of Science and Technology
Inventor： Keun Park , Junwon Lee
CPC classification number: B29C45/73 , B29C45/401 , B33Y80/00
Abstract: Provided is a cooling module to which a microporous cooling structure is applied, and a method of locally and conformally cooling a mold using the same. The cooling module to which a microporous cooling structure is applied which is installed at each high temperature region inside a mold core and allows supplied cooling fluid to flow thereinto to perform local and conformal cooling on a mold may include a body part inserted into the mold core, a microporous cooling structure which is inserted into an upper portion of the body part and in which micro unit cells are periodically and repeatedly formed to form a plurality of connected hollow portions, and a cooling channel including a conduit configured to pass the cooling fluid through the microporous cooling structure.
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公开(公告)号：US20240235245A9
公开(公告)日：2024-07-11
申请号：US18264065
申请日：2021-08-19
Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Se Wan CHOI
IPC: H02J7/06
CPC classification number: H02J7/06 , B60L53/20 , B60L2210/30 , H02J2207/20
Abstract: The present technology discloses a three-phase and single-phase two-way charger. According to a specific example of the present invention, a battery charger having a single-stage structure for a combined use of single-phase and three-phase is implemented without an electrolytic capacitor which lowers the reliability and charging efficiency, to enable a compatible use of single-phase and three-phase external power sources, and to improve charging efficiency and the performance in a wide input/output voltage range by a reduced number of switching elements and a soft switching operation of the switching elements and thus improve the reliability and lifetime. A lightweight charger can be realized by integrating, into a core, at least two of an inductor for removing ripples of the battery charger, a primary side and a secondary side of a transformer, and an inductor for removing noise.
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公开(公告)号：US11885768B2
公开(公告)日：2024-01-30
申请号：US17058938
申请日：2019-12-03
Applicant: Korea Inspection Eng. Co., Ltd , Foundation for Research and Business, Seoul National University of Science and Technology
Inventor： Seong Jin Lim , In Gon Jung , Min Jung Park , Ik Keun Park , Tae Sung Park
IPC: G01N29/22 , G01N29/04 , G01N29/265
CPC classification number: G01N29/225 , G01N29/043 , G01N29/265 , G01N2291/0289 , G01N2291/269 , G01N2291/2675
Abstract: The present invention relates to a semi-automatic scanner for ultrasonic inspection of a branch pipe weld that has a small size and is able to perform an inspection while moving in a state of being attached to a test object by a magnetic force, thereby being applied to fittings having various shapes, such as a branch pipe and an elbow. The semi-automatic scanner for ultrasonic inspection according to the present invention includes a probe configured to inspect a weld by irradiating ultrasonic waves onto a surface of a test object, a probe holder configured to couple the probe by applying an elastic force so as to be pressed against the surface of the test object, an installation bracket having a rod shape, to which the probe holder is coupled so as to be laterally movable, four wheel units installed on both front and rear side surfaces of the installation bracket so as to be vertically slidable, and four magnet parts, each of which is installed on one of the four wheel units and presses the one of the wheel units against the test object with a magnetic force.
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Patent Agency Ranking
公开(公告)号：US11876947B2
公开(公告)日：2024-01-16
申请号：US17901839
申请日：2022-09-01
Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Ji Hoon Yun
IPC: H04N13/00 , H04N13/111 , H04N13/264 , H04N13/156 , H04N13/194 , H04N13/279
CPC classification number: H04N13/111 , H04N13/156 , H04N13/194 , H04N13/264 , H04N13/279 , H04N2013/0085
Abstract: Provided is a method for creating a virtual reality content, storing the virtual reality content in a transmission buffer, and after that, managing the transmission buffer. A server creates the virtual reality content based on user's motion information, stores the virtual reality content in the transmission buffer and is allowed to modify the virtual reality content stored in the transmission buffer based on subsequently received user's motion information, so that the most recent user's motion information can be appropriately reflected in the virtual reality content. It is possible to provide a more immersive virtual reality service.
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公开(公告)号：US20240004025A1
公开(公告)日：2024-01-04
申请号：US18255799
申请日：2021-11-19
Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Ye Hoon LEE , Yang Bae PARK , Dong Young LEE , Hee Jeong JEONG , Dong Ho KIM , Bong-Seok SEO , Seok Ju BYUN , Ji Hyeon YOO , Ye Bin KIM
Abstract: The present technology provides a system and a method for terminal positioning. According to a specific embodiment of the present invention, the position of a terminal is estimated using inner and outer centers obtained through points on each distance circumference generated on the basis of the RSSI of each indoor positioning sensor, a terminal correction position is derived: using an estimated terminal position derived using each distance value generated on the basis of the RSSI of each indoor positioning sensor, and the intersection points between straight lines connecting a circle with the smallest radius determined with the RSSI, the remaining two circles that excludes the circle with the smallest radius, and the estimated terminal position; and on the basis of the circular arc of the smallest circle, including the intersection points, and the ratio of the radii of the remaining two circles that excludes the smallest circle determined with the RSSI, and the estimated terminal position is corrected using the derived terminal correction position so that the accuracy of terminal position can be fundamentally improved.
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公开(公告)号：US20230399248A1
公开(公告)日：2023-12-14
申请号：US18209104
申请日：2023-06-13
Applicant: Samsung Display Co., LTD. , Foundation for Research and Business, Seoul National University of Science and Technology
Inventor： MYUNGHEE KIM , Hyun-Suk Oh , KEUMYONG KIM , BYUNGKOOK HWANG , Hyeok Kim , Abdolvahed Noori
CPC classification number: C02F3/342 , C12N1/205 , C12N11/10 , C02F3/1268 , C12R2001/07
Abstract: Bacillus sp. SDC-U1 strain deposited to Korean Collection for Type Cultures with Accession No. KCTC 14857BP has quorum quenching activity.
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公开(公告)号：US20230387574A1
公开(公告)日：2023-11-30
申请号：US18248203
申请日：2021-06-15
Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Jae-Young CHUNG , Philip Ayiku DZAGBLETEY , Gwang Hun JEON
CPC classification number: H01Q1/273 , H01Q9/0407 , H01Q1/48
Abstract: Disclosed is a fibre-based wearable patch antenna. The fibre-based wearable patch antenna comprises: a radiating patch; a substrate on which the radiating patch is attached; a ground surface which is located below the substrate and has a slot formed therein; and a cable for the supply of power to the radiating patch, wherein the invention is formed integrally with clothing and the cable can be attached below the ground surface.
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公开(公告)号：US20220339053A1
公开(公告)日：2022-10-27
申请号：US17763765
申请日：2020-09-15
Applicant: Foundation for Research and Business, Seoul National University of Science and Technology , National Rehabilitation Center
Inventor： Jung Yup KIM , Jung Joon KIM , Hyeong Sic KIM , Seon Deok EUN , Do Hoon KOO , Hyun Ju PARK
Abstract: A driving system of a hybrid gait rehabilitation robot include: a driving unit that is connected to a footrest of the gait rehabilitation robot and transmits a driving force such that the robot operates at a preset speed; a speed detection unit that detects a gait speed of an occupant; and a control unit that controls a speed of the driving unit by comparing the detected speed of the speed detection unit with a speed applied by the driving unit. The driving unit transmits power toward the occupant, but the driving force of the occupant is not transmitted to the driving unit.
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