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公开(公告)号：US11962436B2
公开(公告)日：2024-04-16
申请号：US17925183
申请日：2021-05-14
Inventor： Namyoon Lee , Hyowon Lee
IPC: H04L25/02
CPC classification number: H04L25/021 , H04L25/0204
Abstract: Disclosed are a user detection technique, and a method and apparatus for channel estimation in a wireless communication system supporting massive multiple-input multiple-output. The method comprises the steps of: receiving a superimposed signal including a transmission signal of at least one user equipment (UE) from among a plurality of user equipments, wherein each transmission signal includes a pilot signal of a corresponding user equipment; calculating a sample covariance matrix from the received superimposed signal by using the number of antennas of a base station and a pilot signal matrix of the at least one user equipment; calculating a likelihood function indicating the likelihood probability of the received superimposed signal, on the basis of the number of antennas of the base station and the received superimposed signal; detecting a user index set indicating whether or not the plurality of user equipments have transmitted signals, by using the calculated likelihood function and sample covariance matrix; and performing channel estimation of the at least one user equipment that is transmitting the signal, on the basis of the detected user index set.
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公开(公告)号：US20240108310A1
公开(公告)日：2024-04-04
申请号：US17768531
申请日：2020-07-27
Inventor： Hyung Ham KIM , Hae Gyun LIM , Hyun Hee KIM
CPC classification number: A61B8/4494 , A61B8/4488 , A61B8/54 , A61N7/00
Abstract: An ultrasound system according to an embodiment of the present invention includes an imaging and therapy integrated transducer including a therapy transducer and an imaging transducer, a linear motor module configured to linearly move the imaging and therapy integrated transducer along a therapy target region, and a rotation motor module configured to rotate the imaging and therapy integrated transducer to switch the imaging transducer and the therapy transducer, wherein the therapy transducer and the imaging transducer are arranged to be switchable to each other by rotation in a housing.
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43.发明公开公开(公告)号：US20240096517A1
公开(公告)日：2024-03-21
申请号：US18266253
申请日：2021-10-13
Inventor： Un Yong JEONG , Min Sik KONG , Hye Jin HWANG
CPC classification number: H01B1/20 , G03F7/0017 , H01B13/0016
Abstract: The present invention provides a stretchable ACF, a method for manufacturing same, and an interfacial bonding member and a device comprising same. The stretchable ACF comprises: a polymer film; and conductive particles inserted into the polymer film and aligned therein, wherein the conductive particles are exposed to the outside of the upper and lower surfaces of the polymer film.
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公开(公告)号：US11925129B2
公开(公告)日：2024-03-05
申请号：US17623241
申请日：2021-11-09
Inventor： Jang Sik Lee , Kwang Hyun Kim , Young Jun Park
CPC classification number: H10N70/8833 , H10B63/80 , H10N70/023 , H10N70/041 , H10N70/063 , H10N70/841
Abstract: The present invention provides a multi-layer selector device exhibiting a low leakage current by controlling a threshold voltage. According to an embodiment of the present invention, the multi-layer selector device comprises: a substrate; a lower electrode layer disposed on the substrate; an insulating layer disposed on the lower electrode layer and having a via hole passing through to expose the lower electrode layer; a switching layer disposed on the lower electrode layer in the via hole, performing a switching operation by forming and destroying a conductive filament, and made of a multi-layer to control the formation of the conductive filament; and an upper electrode layer disposed on the switching layer.
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公开(公告)号：US20240058794A1
公开(公告)日：2024-02-22
申请号：US18231842
申请日：2023-08-09
Applicant: Korea Advanced Institute of Science and Technology , POSTECH Research and Business Development Foundation
Inventor： Hyun Joo LEE , Gun Joo KIM , Yong Tae KIM
CPC classification number: B01J23/83 , B01J23/72 , B01J35/0006 , B01J35/026 , B01J37/031 , B01J6/001 , B01J37/04
Abstract: The present disclosure relates to a copper-based catalyst for reverse water gas reaction including a gas-permeable amorphous shell formed by strong metal-support interaction. The inventors of the present disclosure synthesized a copper-ceria solid solution and then adjusted the surface defect sites of the solid solution, thereby producing a catalyst including enhanced surface defect sites and having a gas-permeable amorphous shell structure formed on each copper particle. When the catalyst production method according to the present disclosure is used, it is possible to synthesize a catalyst including a structure consisting only of very small Cu particles encapsulated by surface shells and Cu sites incorporated into the CeO2 lattice structure. When the synthesized catalyst is used in the RWGS reaction, it exhibits excellent low-temperature activity, high activity and durability, compared to conventional precious metal catalysts. In addition, even when the catalyst of the present disclosure is supported on a monolith and used to perform the RWGS reaction on a bench scale, it exhibits high activity, CO2 conversion and durability, which are comparable with those in the laboratory scale, indicating that it may be applied to an actual process.
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Patent Agency Ranking
46.发明公开公开(公告)号：US20240055770A1
公开(公告)日：2024-02-15
申请号：US18205932
申请日：2023-06-05
Inventor： Seungtae KO , Daehyeon KIM , Jungyub LEE , Wonbin HONG
CPC classification number: H01Q15/002 , H01Q9/16
Abstract: An electronic device includes a memory, a frequency selective surface (FSS) including a plurality of cells, and at least one processor. Each cell of the plurality of cells includes a liquid crystal layer. The at least one processor is configured to receive a signal from another electronic device based on the FSS. The at least one processor is configured to determine refraction information for each cell of the plurality of cells of the FSS based on a difference between first pattern information for the other electronic device and second pattern information for the received signal. The at least one processor is configured to perform a reconfiguration for the FSS based on refraction information for each cell of the plurality of cells of the FSS. The at least one processor is configured to obtain a reconstruction signal from the other electronic device based on the reconfigured FSS.
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公开(公告)号：US20240052002A1
公开(公告)日：2024-02-15
申请号：US18365274
申请日：2023-08-04
Inventor： Ho Young NAM , Il Doo HWANG
IPC: C07K14/415 , C12N15/82
CPC classification number: C07K14/415 , C12N15/8213 , C12N15/8226 , C12N15/8218 , C12N2310/20
Abstract: The present invention relates to a composition for enhancing the sink strength of a sink tissue of a plant. The composition can increase the number of phloem cells and phloem transport velocity by suppressing the expression of an SlJUL protein or a gene encoding the SlJUL protein. Therefore, the present invention can be usefully used to increase the productivity and yield of agricultural crops.
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公开(公告)号：US20230422529A1
公开(公告)日：2023-12-28
申请号：US18102612
申请日：2023-01-27
Inventor： Byoung Hun LEE , Yong Su LEE
IPC: H10K10/46
CPC classification number: H10K10/486 , H10K10/466
Abstract: Disclosed herein are a multi-level device which has a ternary characteristic and can reduce hysteresis, and a method of manufacturing the same. The multi-level device can have a plurality of turn-on voltages, that is, a plurality of threshold voltages, thereby providing multi-level conductivity as a ternary device characteristic. In addition, a double insulating layer made of a dielectric layer and an organic polymer layer is used as a separation layer for channel layer separation, and by removing the hysteresis due to a trap charge at an interface between a channel layer and an insulating layer, a uniform ternary characteristic can always be maintained, and by forming the channel layer on an organic polymer layer, the channel layer can be more stably formed on the insulating layer.
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49.发明公开公开(公告)号：US20230381737A1
公开(公告)日：2023-11-30
申请号：US18066456
申请日：2022-12-15
Inventor： Ju Eun KIM , Seok Ju HONG , Woo Yong UM
CPC classification number: B01J20/08 , C01G29/006 , C01G51/006 , C01G53/006 , B01J20/12 , B01J20/3085 , B01J20/3042 , C01P2002/22
Abstract: The present invention relates to a method of preparing a buffer material composed of bentonite modified with a layered double hydroxide (LDH) as a buffer material used for deep geological disposal of radioactive waste, the method including a step (a) of producing a first mixture by adding a compound containing a divalent cationic material, aluminum nitrate (Al(NO3)3), and bismuth nitrate (Bi(NO3)3) to a reactor.
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公开(公告)号：US20230342621A1
公开(公告)日：2023-10-26
申请号：US18341996
申请日：2023-06-27
Inventor： Hyunsoo KIM , Jaeyoon SIM , Jaehan PARK , Hyunwoo SON , Sangjoon KIM
CPC classification number: G06N3/088 , G06F17/18 , G06F2218/12
Abstract: A method and apparatus for performing anomaly detection by using a neural network are provided. The apparatus is configured to extract input features of an input data signal, obtain output features of the neural network by processing the input features through the neural network, obtain an error based on the input features and the output features, and determine whether the input data signal indicates an abnormal signal based on the error and a threshold.
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