Patents Assigned to Korea Advanced Institute of Science and Technology
  • Publication number: 20240206188
    Abstract: The present invention relates to ferroelectric capacitors, transistors, memory device, and method of manufacturing ferroelectric devices. The ferroelectric capacitor includes a first electrode, a second electrode facing the first electrode, a ferroelectric layer between the first electrode and the second electrode, and an interfacial layer between the ferroelectric layer and the first electrode or between the ferroelectric layer and the second electrode. The ferroelectric layer includes hafnium-based oxide. The interfacial layer includes HfO2.
    Type: Application
    Filed: February 28, 2024
    Publication date: June 20, 2024
    Applicants: Samsung Electronics Co., Ltd., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventor: Sanghun JEON
  • Publication number: 20240202898
    Abstract: Disclosed are a method and a system for measuring a displacement of a structure based on fusion of asynchronous vision measurement data of natural target and acceleration data of the structure. A scale factor, which is a conversion factor between a pixel resolution of the image frame data and a distance resolution of real space, is calculated using image frame data taken at a predetermined first sample frequency of a stationary target outside the structure by a camera installed on the structure, and acceleration data measured at a predetermined second sample frequency by an accelerometer installed on the structure, over time. A vision-based displacement value of the structure is estimated using a feature point matching algorithm and the scale factor.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 20, 2024
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Hoon SOHN, Jae Mook CHOI, Zhanxiong MA, Ki Young KIM
  • Publication number: 20240203113
    Abstract: An interpolation model learning method, a non-transitory computer-readable storage medium storing instructions allowing the method to be performed, and a device for learning an interpolation frame generating module are provided. The interpolation model learning method may include extracting, by using a neural network model, a temporal-spatial feature of each of a frame group including an interpolation frame generated by an interpolation model based on a neural network and a frame group including a ground truth (GT) frame corresponding to an interpolation frame and changing a weight and/or a bias of a neural network of an interpolation model to decrease a difference between temporal-spatial features.
    Type: Application
    Filed: December 18, 2023
    Publication date: June 20, 2024
    Applicants: Samsung Electronics Co., Ltd., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yowon JEONG, Junsik JUNG, Sungeui YOON
  • Publication number: 20240202596
    Abstract: A method of providing an explanation of an artificial intelligence model based on a plug-and-plug mode includes a service provider server setting a type of an artificial intelligence model, a plug-and-play manager recognizing an artificial intelligence model and creating a list of available explanation modules on the basis of a recognition result when the artificial intelligence model is input, the service provider server providing key information on explanation modules to a user terminal, the user terminal selecting one of the explanation modules and notifying the service provider server of the selected explanation module, the plug-and-play manager deriving the selected explanation module from among the explanation modules in the list, and the derived explanation module providing an explanation of the input artificial intelligence model to the user terminal.
    Type: Application
    Filed: December 14, 2023
    Publication date: June 20, 2024
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventor: Jae Sik CHOI
  • Publication number: 20240202839
    Abstract: Provided is a method of analyzing social influence. The method according to the embodiments includes obtaining posts containing text data in a forum, generating a forum interaction graph including a plurality of nodes corresponding to a plurality of embedded vectors generated by embedding the posts and edges indicating a connection relationship between the posts, and training an artificial intelligence model using the forum interaction graph.
    Type: Application
    Filed: December 13, 2023
    Publication date: June 20, 2024
    Applicants: Korea Advanced Institute of Science and Technology, S2W Inc.
    Inventors: Seung Won SHIN, Kwan Woo KIM, Young Jin JIN, Chang Hoon YOON
  • Patent number: 12011830
    Abstract: A positioning arm including a link assembly including a translation link configured to translationally move along a virtual axis passing a remote center of motion (RCM) present at a predetermined position separated from one point and configured to move in at least two directions based on the one point, and a gravity torque compensator configured to provide a compensation torque in a direction opposite to a gravity torque applied to the one point by a self-weight of the link assembly.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: June 18, 2024
    Assignees: ROEN Surgical, Inc., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Soo Kwon, Chang Kyun Kim, Byung Sik Cheon
  • Patent number: 12014202
    Abstract: A method of operating the accelerator includes receiving a request for preemption during an execution of a first task using one or more processing elements included in the accelerator, in response to the request for preemption, moving context information of the first task stored in an internal memory of the accelerator to an external memory of the accelerator, and executing a second task associated with the request for preemption using the processing elements.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: June 18, 2024
    Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Jaehyung Ahn, Minsoo Rhu, Yujeong Choi
  • Patent number: 12015755
    Abstract: Provided is a real-time omnidirectional stereo matching method in a camera system including a first pair of fisheye cameras including first and second fisheye cameras provided to perform shooting in opposite directions and a second pair of fisheye cameras including third and fourth fisheye cameras provided to perform shooting in opposite directions and in which the first pair of fisheye cameras and the second pair of fisheye cameras are vertically provided, including receiving fisheye images of a subject captured through the first to the fourth fisheye cameras; selecting one fisheye camera from among fisheye cameras for each pixel of a preset reference fisheye image among the fisheye images using a sweep volume for preset distance candidates; generating a distance map for all pixels using the reference fisheye image and a fisheye image of the one fisheye camera; and performing real-time stereo matching on the fisheye images using the distance map.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: June 18, 2024
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min Hyuk Kim, Meuleman Andreas, Hyeonjoong Jang
  • Publication number: 20240193091
    Abstract: A computational network interface card (NIC) sharing a storage space with a memory expander thereof includes: a NIC memory including instructions; a NIC processor including a cache and electrically connected to the NIC memory; and a NIC configured to transmit data stored in the NIC memory or the cache to a network, wherein, the instructions are configured to cause the NIC processor to perform operations including: receiving a request to read or write metadata; and checking whether the requested metadata is stored in a local metadata cache of the computational NIC by sequentially checking whether the metadata is stored in the cache of the NIC processor, a cache of the NIC, the NIC memory, or the memory expander.
    Type: Application
    Filed: July 13, 2023
    Publication date: June 13, 2024
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Sungjoon PARK, Youngjin KWON, Inhoe KOO, Jongyul KIM, Jinyoung OH, Young Jun HONG
  • Publication number: 20240195226
    Abstract: A dual-mode multi-coil wireless power transfer system includes a control unit and a transmitter unit. The transmitter unit may wirelessly transmit electric power to an external receiver coil. The transmitter unit include a plurality of transmitter modules. Each of the plurality of transmitter modules may operate in at least one of a power transfer mode and a leakage magnetic field shield mode. The control unit controls each of the plurality of transmitter modules to operate in at least one of the power transfer mode and the leakage magnetic field shield mode or to be turned off.
    Type: Application
    Filed: November 14, 2023
    Publication date: June 13, 2024
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seungyong AHN, Semin CHOI, Sungryul HUH, Haerim KIM, Seongho WOO
  • Publication number: 20240194845
    Abstract: A stretchable display panel including a first light-emitting module and a second light-emitting module. The first light-emitting module includes a first body, a plurality of first connectors extending from the first body in different directions and each having a predetermined elastic force, first satellite portions extending from the first body in directions different from the directions of the plurality of first connectors, a first adhesive member disposed on the first body, and a first light-emitting element disposed on the first satellite portion. The second light-emitting module includes a second body disposed on the first adhesive member, a plurality of second connectors extending from the second body in different directions and each having a predetermined elastic force, a second satellite portion extending from the second body in a direction different from the directions of the plurality of second connectors and not overlapping the first satellite portion.
    Type: Application
    Filed: June 30, 2023
    Publication date: June 13, 2024
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kyung Cheol CHOI, Hag Seon KIM
  • Publication number: 20240193052
    Abstract: Disclosed is a multiple file transaction method comprising: a first step in which, for each of a plurality of files, a file system of a host stores, in a master commit block, the location of an inode block in a storage, the inode block being a block in which an inode of the file is written; and a second step in which the file system stores the master commit block in the storage.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 13, 2024
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Youjip Won, Joontaek Oh
  • Publication number: 20240194407
    Abstract: Provided are a dielectric material, a device including the same, and a method of preparing the dielectric material. The dielectric material includes a polycrystalline oxide including a plurality of crystal grain bulks and grain boundaries located between the plurality of crystal grain bulks, and the polycrystalline oxide includes an indium dopant in the grain boundaries.
    Type: Application
    Filed: June 22, 2023
    Publication date: June 13, 2024
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sung-Yoon CHUNG, Ji-Sang An
  • Patent number: 12007606
    Abstract: A ring resonator includes a core. Both ends of the core in a lengthwise direction are connected to have a circular shape. The ring resonator further includes a cladding surrounding the core, a jacket surrounding the cladding and a sleeve surrounding a portion of the jacket. A portion of the core is exposed from the cladding and the jacket.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: June 11, 2024
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Kyoungsik Yu, Gyeongho Son, Mohamad Syahadi
  • Patent number: 12010650
    Abstract: A fake base station (FBS) redirection attack method using unicast message injection in a long term evolution (LTE) wireless section and a system thereof are provided. The FBS redirection attack method includes synchronizing with a signal of a commercial base station connected with a target device being an attack target, transmitting an international mobile subscriber identity (IMSI) paging message to the target device using an IMSI of the target deice, and injecting a unicast message including a frequency of an FBS into the target device, before a base station re-access process is completed in the target device which decodes the IMSI paging message.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: June 11, 2024
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Yongdae Kim, CheolJun Park, Hojoon Yang, Sangwook Bae, Mincheol Son, Jiho Lee, Hongil Kim
  • Patent number: 12006457
    Abstract: The disclosed graphene quantum dot composite includes a dielectric matrix including a metal oxynitride, and a graphene quantum dot dispersed in the dielectric matrix. The graphene quantum dot composite can reduce the aggregation-caused photoluminescence quenching of graphene quantum dots, and can improve a photoluminescence quantum yields of a graphene quantum dot.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: June 11, 2024
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Seokwoo Jeon, Minsu Park, Hyewon Yoon
  • Patent number: 12010302
    Abstract: Disclosed according to one exemplary embodiment includes not limited to: a filtering unit configured to generate filtering information by filtering a residual image corresponding to a difference between an original image and a prediction image; an inverse filtering unit configured to generate inverse filtering information by inversely filtering the filtering information; an estimator configured to generate the prediction image based on the original image and reconstruction information; a CNN-based in-loop filter configured to receive the inverse filtering information and the prediction image and to output the reconstruction information; and an encoder configured to perform encoding based on the filtering information and information of the prediction image, and wherein the CNN-based in-loop filter is trained for each of the plurality of artefact sections according to an artefact value or for each of the plurality of quantization parameter sections according to a quantization parameter.
    Type: Grant
    Filed: December 26, 2022
    Date of Patent: June 11, 2024
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventor: Mun Churl Kim
  • Publication number: 20240182192
    Abstract: In accordance with the present invention, the drone includes a frame having a plurality of arms, a plurality of rotors connected to the plurality of arms, and propellers fixed on the plurality of rotors. The drone also includes an arm hammer part disposed on at least one of the plurality of arms and a rotor hammer part disposed on at least one of the plurality of rotors. A structure capable of destroying a glass window at once is mounted on the quadcopter drone, and a number of quadcopter drones, corresponding to the number of glass windows that need to be destroyed, are coupled so that almost all glass windows of a building where a disaster has occurred can be destroyed at once. As a result, evacuation and rescue activities for people trapped inside the building can be performed efficiently and safely through glass windows, and flexible response is possible even in situations where it is difficult to destroy glass windows from the inside during a disaster.
    Type: Application
    Filed: April 7, 2022
    Publication date: June 6, 2024
    Applicant: Korea Advanced Institute of Science And Technology
    Inventors: Jung-Wuk HONG, Youngjun CHOI, Sangmin LEE, Kwonhwan KO
  • Patent number: 11999354
    Abstract: The present invention relates to a method and apparatus for estimating a road surface type by using an ultrasonic signal and, more particularly, to a method for estimating a road surface type by using an artificial neural network model machine-learned with respect to a reflected ultrasonic signal and an apparatus for performing same. According to the present invention, provided are a method and apparatus for providing highly accurate road surface information at low cost, by machine-learning both characteristics of an ultrasonic signal reflected from a road surface and a road surface state, establishing a model between the two, and then estimating the type of the road surface by utilizing the model. In particular, even a road surface where thin ice, that is, black ice, is formed, which was not detectable in the conventional method for estimating a road-surface friction coefficient, may be accurately estimated, thereby contributing to safer driving.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: June 4, 2024
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sei-Bum Choi, Min-Hyun Kim, Jin-Rak Park, Seung-In Shin, Jong-Chan Park
  • Patent number: 11999614
    Abstract: Provided is a thin film including Mo1-xWxTe2 stacked in a plurality of layers. The thin film has a thickness of about 1 nm to about 100 nm in a stacking direction, has a symmetric lattice structure at a temperature higher than a threshold temperature, and has an asymmetric lattice structure at a temperature equal to or lower than the threshold temperature.
    Type: Grant
    Filed: January 9, 2023
    Date of Patent: June 4, 2024
    Assignees: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Heejun Yang, Eunji Hwang, Yonas Assefa Eshete