Patents Assigned to Seoul National University R&DB Foundation
  • Publication number: 20230385375
    Abstract: A method of performing distributed matrix computation using task entanglement-based coding as a method of processing a huge amount of matrix computation in a distributed manner in a distributed computing environment is provided. A main server encodes information to be transmitted to a plurality of edge devices for distributed matrix computation on the basis of task entanglement-based coding employing a Chebyshev polynomial, thereby reducing the amount of information to be transmitted. Also, when the number of computation results received from the edge devices becomes a recovery threshold, the main server immediately performs decoding to derive a matrix computation result.
    Type: Application
    Filed: July 1, 2022
    Publication date: November 30, 2023
    Applicants: Seoul National University R&DB Foundation, hodooAI Lab Inc.
    Inventors: Jungwoo LEE, Sangwoo HONG, Heecheol YANG, Sungyeob HAN
  • Patent number: 11825907
    Abstract: A method and apparatus for determining sensory threshold information for a shoe-type device, the shoe-type device, and a method of controlling the shoe-type device are disclosed. The method of determining sensory threshold information includes executing a program for sensory threshold testing, determining sensory threshold information of a user based on a choice input by the user that is received in a process of the sensory threshold testing, and transmitting the determined sensory threshold information to the shoe-type device.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: November 28, 2023
    Assignees: Samsung Electronics Co., Ltd., Seoul National University R&DB Foundation
    Inventors: Segon Roh, Jeongin Moon, Prabhat Pathak, Jooeun Ahn, Changhyun Roh, Youngbo Shim
  • Patent number: 11827912
    Abstract: The present invention relates to chimeric endolysin Lys109 which effectively controls Staphylococcus aureus, wherein the endolysin Lys109 of the present invention has a novel amino acid sequence that has not been conventionally studied. Endolysin Lys109 of the present invention can be used as a biological regulator capable of effectively inhibiting a wide range of Staphylococcus aureus and a biofilm produced thereby. In addition, endolysin Lys109 can kill Staphylococcus aureus without regard for resistance to conventional antibiotics, and thus can be widely used for treatment of diseases caused by Staphylococcus aureus infection. Moreover, endolysin Lys109 can also be used to resolve medical problems caused by Staphylococcus aureus which has antibiotic resistance.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: November 28, 2023
    Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Sangryeol Ryu, Bokyung Son
  • Publication number: 20230375721
    Abstract: The present disclosure relates to a method of measuring an absorbed dose of radiation in small irradiation fields. The method of measuring an absorbed dose of radiation in small irradiation fields, includes an acquisition step of acquiring absorbed dose distribution data of radiation; a determination step of determining a region where an absorbed dose of radiation of a predetermined ratio or more is absorbed based on the absorbed dose distribution data of radiation; a formation step of forming a scintillator having a shape in which a plurality of hexahedral cells are coupled to have a shape matching the region; a measurement step of measuring a absorbed dose of radiation irradiating the scintillator from a radiation irradiation device; and a calculation step of calculating the absorbed dose of radiation of the cell at a predetermined position by using predetermined Equations.
    Type: Application
    Filed: August 7, 2023
    Publication date: November 23, 2023
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Hyun Tai CHUNG, Tae Hoon KIM, Yong Kyun KIM
  • Publication number: 20230379134
    Abstract: A method of performing a homomorphic permutation by a server includes: generating, via a ciphertext generation portion, a first ciphertext by adding noise to the basic ciphertext; transmitting, via a transmission portion, the first ciphertext to a client; performing, via an operation portion, a predetermined operation on the noise; receiving, via a reception portion, a second ciphertext from the client; and extracting, via an extraction portion, the basic ciphertext on which the predetermined operation is performed, by removing, from the second ciphertext, the noise on which the predetermined operation is performed, wherein the second ciphertext is a ciphertext that is re-encrypted by the client after decrypting the first ciphertext and performing the predetermined operation on the decrypted first ciphertext.
    Type: Application
    Filed: October 18, 2022
    Publication date: November 23, 2023
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, INDUSTRY-ACADEMIC COOPERATION FOUNDATION, CHOSUN UNIVERSITY
    Inventors: Joon-Woo LEE, Jong-Seon NO, Yong-Woo LEE, Seung-Jae CHAE, Young-Sik KIM
  • Patent number: 11819477
    Abstract: Provided are nanoparticles for the selective death of cancer cells through ferroptosis and a method of preparing the same. More particularly, the nanoparticles are in a form in which a cancer cell-targeting hydrogel and iron particles are bound and aggregated, and are selectively accumulated in cancer cells, and thus exhibit an effective cancer cell killing effect through ferroptosis, and accordingly, are expected to exhibit high therapeutic effects due to less side effects.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: November 21, 2023
    Assignee: SEOUL NATIONAL UNIVERSITY R & DB FOUNDATION
    Inventors: Kang Won Lee, Chae Won Bae, Min Hee Park
  • Patent number: 11824702
    Abstract: A receiver includes a sampling circuit configured to sample a comparison result between an input signal and a plurality of threshold voltages according to a sampling clock signal; a clock controller configured to generate the sampling clock signal according to a clock control signal; and a control circuit configure to generate the clock control signal and the plurality of threshold voltages according to a target value and an output of the sampling circuit. The control circuit operates to control a ratio of a magnitude of a main cursor of the input signal and a magnitude of a pre-cursor intersymbol interference to be the target value.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: November 21, 2023
    Assignees: SK hynix Inc., Seoul National University R&DB Foundation
    Inventors: Kwangho Lee, Jinhyung Lee, Deog-Kyoon Jeong
  • Publication number: 20230368019
    Abstract: A method of operating a deep learning system configured to perform private inferences, including performing a convolution operation with respect to input values; and outputting result values from the convolution operation using an activation function, wherein the activation function includes a Hermitic expansion using a Hermite polynomial as an eigenfunction to perform a Fourier transform.
    Type: Application
    Filed: December 8, 2022
    Publication date: November 16, 2023
    Applicants: Samsung Electronics Co., Ltd., Seoul National University R&DB Foundation
    Inventors: Hongrak SON, Jaiyoung PARK, Jungho AHN, Youngsik MOON
  • Patent number: 11816922
    Abstract: A fingerprint extraction apparatus includes a fingerprint generation module configured to generate first and second virtual fingerprint images, perform primary image processing on the first virtual fingerprint image and primary and secondary image processing on the second virtual fingerprint images, and generate virtual overlapped fingerprint images by combining the first and second virtual fingerprint images on which image processing is performed; a machine learning module configured to generate a learning model by performing machine learning using the virtual overlapped fingerprint images as input data; and a fingerprint extraction module configured to extract a fingerprint located vertically on a center of a real image by inputting the real image to a target fingerprint extraction learning model, and the primary image processing comprises image processing on a curve forming a fingerprint, and the secondary image processing comprises image processing on a location of the fingerprint in the image.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: November 14, 2023
    Assignee: Seoul National University R&DB Foundation
    Inventors: Byoung Ho Lee, Jae Bum Cho, Dong Heon Yoo, Min Seok Chae, Ju Hyun Lee
  • Patent number: 11818240
    Abstract: There is provided a clock and data recovery circuit for a high-speed PAM-4 receiver through statistical learning. A clock and data recovery device according to an embodiment includes: an input unit through which data is inputted; a clock input unit through which a clock is inputted; a sampling unit configured to sample the inputted data by using the inputted clock; a controller configured to combine results of sampling at a plurality of sampling points, to determine a state of the clock based on the combined results, and to generate a control value for controlling the clock; and an adjustment unit configured to adjust the clock applied to the sampling unit, based on the control value generated by the controller. Accordingly, a hardware structure is simplified and energy efficiency is enhanced compared to an exiting oversampling clock and data recovery circuit for a PAM-4 receiver.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: November 14, 2023
    Assignees: Korea Electronics Technology Institute, Seoul National University R&DB Foundation
    Inventors: Ha Ram Ju, Sung Ho Lee, Deog Kyoon Jeong
  • Publication number: 20230357123
    Abstract: A photoresist composition, a method of forming a pattern, and a method of synthesizing 6-nitrochrysene, the photoresist composition includes a polymer resin; a photo acid generator; a quencher; an organic solvent; and an etching resistance enhancer, wherein the etching resistance enhancer is represented by the following Chemical Formula 1,
    Type: Application
    Filed: March 9, 2023
    Publication date: November 9, 2023
    Applicant: Seoul National University R&DB Foundation
    Inventors: Jonghoon KIM, Suk Koo HONG, Young Gyu KIM, Jooyoung SONG, Hae Min YANG, Gumhye JEON, Juhee KIM, Sunah LEE, Ahhyun LEE, Hong Won LEE
  • Publication number: 20230359805
    Abstract: A layout method for a semiconductor chip includes designing a layout; generating an aerial image based on the layout; determining a predicted scanning electron microscope (SEM) image based on the aerial image using a first machine learning model; determining a target SEM image based on the layout using a second machine learning model; predicting a defect in the semiconductor chip based on a result of comparing the predicted SEM image with the target SEM image; and correcting the layout based on the predicted defect.
    Type: Application
    Filed: January 31, 2023
    Publication date: November 9, 2023
    Applicants: SAMSUNG ELECTRONICS CO, LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Kihyun KIM, Donyun KIM, Nohong KWAK
  • Publication number: 20230356199
    Abstract: Provided is a composite catalyst used in a dehydro-aromatization reaction of methane, the composite catalyst including a glasslike metal oxide catalyst which includes a supported catalyst including a porous support and a catalyst of a transition metal oxide supported on the support, and a nickel oxide (NiO) physically dispersed in the supported catalyst.
    Type: Application
    Filed: May 12, 2022
    Publication date: November 9, 2023
    Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Do Heui KIM, Kihun NAM, Hae Won RYU
  • Patent number: 11810549
    Abstract: A computing device trains a position optimization model for determining, from among a plurality of positions, one or more optimal positions on a face based on a training data set including facial skin strain data at the plurality of positions. The computing device trains a speech classification model for classifying a voice from the facial skin strain data based on the training data at the one or more optimal positions determined by the position optimization model among the training data set.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: November 7, 2023
    Assignees: Samsung Electronics Co., Ltd., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Sungroh Yoon, Eunji Kim, Heeseung Kim
  • Patent number: 11808954
    Abstract: Provided is a multi-image display apparatus including an image forming device configured to form a first image, a first polarization plate configured to transmit a first polarization component of the first image provided from the image forming device, a second polarization plate configured to transmit a second polarization component of a second image that is provided from a path different from the first image, the second polarization component being different from the first polarization component, a screen configured to reflect and diffuse the first image, and transmit the second image, and a polarization selective lens configured to focus the first image having the first polarization component, and transmit the second image having the second polarization component without refraction.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: November 7, 2023
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Changkun Lee, Seokil Moon, Byoungho Lee, Wontaek Seo, Geeyoung Sung, Hongseok Lee
  • Publication number: 20230352072
    Abstract: Provided are a magnetic memory using a spin current, an operating method thereof, and/or an electronic apparatus including the magnetic memory. The magnetic memory includes, first and second wirings spaced apart from each other and intersecting each other, and a data storage layer between the first and second wirings. The data storage layer includes a pinned layer with a fixed magnetic moment, a free layer spaced apart from the pinned layer and not having a fixed magnetic moment, and an insulating tunnel barrier layer provided between the pinned layer and the free layer. Among the first and second wirings, the wiring contacting the free layer includes a conductive wiring having no spin Hall effect, and the free layer includes a two-dimensional material which at room temperature has a spin Hall effect, magnetic properties, and metal properties. The two-dimensional material includes a two-dimensional van der Waals material.
    Type: Application
    Filed: October 12, 2022
    Publication date: November 2, 2023
    Applicants: Samsung Electronics Co., Ltd., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Kwangseok KIM, Je-Geun PARK, Kaixuan ZHANG, Jingyuan CUI
  • Publication number: 20230352723
    Abstract: A system and a method for estimating pressure distribution of a battery cell evaluate distribution of pressure applied to the battery cell due to applied loads during the pressure test of the battery cell. The method includes disposing the battery cell in a pressing apparatus and pressing the battery cell, measuring strains by strain sensors provided in the pressing apparatus, and estimating a pressure distribution applied to the battery cell based on the strains.
    Type: Application
    Filed: December 12, 2022
    Publication date: November 2, 2023
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Yong Seok Choi, Soon Chul Byun, Byeng Dong Youn, Won Gon Kim, Hwa Yong Jeong
  • Publication number: 20230351613
    Abstract: Provided is a video analysis terminal including a patch recommendation unit configured to recommend tracking-failure patches and new-object patches in a current frame of a video image, and a patch aggregation unit configured to generate a first patch cluster by collecting the tracking-failure patches recommended in the current frame, and generate a second patch cluster by collecting the new-object patches recommended in the current frame.
    Type: Application
    Filed: May 1, 2023
    Publication date: November 2, 2023
    Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Kichang YANG, Youngki LEE, Juheon YI, Kyungjin LEE
  • Patent number: 11800864
    Abstract: The present invention provides a composition for inhibiting ice recrystallization, including: A nucleic acid structure comprising a scaffold nucleic acid folded at predetermined positions to form a plurality of strands, and a plurality of staple nucleic acids, wherein at least a portion thereof has a complementary sequence to at least a portion of the scaffold nucleic acid, thereby binding to the scaffold nucleic acid to form a double strand. Therefore, it is possible to increase a survival rate of cells due to having excellent effect of inhibiting ice recrystallization upon cryopreservation of the cells, and maintain a texture of food even when using the composition in the freezing of food.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 31, 2023
    Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Korea University Research and Business Foundation, PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Dong June Ahn, Ye Dam Lee, Do Nyun Kim, Chan Seok Lee, Sang Wook Wu, Su Hyun Park
  • Publication number: 20230345823
    Abstract: Disclosed are an n-type semiconductor including compound represented by Chemical Formula 1 or Chemical Formula 2, an image sensor, and an electronic device. In Chemical Formula 1 and Chemical Formula 2, each substituent is as defined in the detailed description.
    Type: Application
    Filed: June 29, 2023
    Publication date: October 26, 2023
    Applicants: Samsung Electronics Co., Ltd., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Yeong Suk CHOI, Soo Young PARK, Sung Young YUN, Hyeong-Ju KIM, Seyoung JUNG, Dong Joo MIN, Ji Eon KWON