Patents Assigned to Korea Advanced Institute of Science and Technology
  • Publication number: 20230029759
    Abstract: A method of classifying emotions of utterances in a dialogue using word-level emotion embedding based on semi-supervised learning and a long short-term memory (LSTM) model includes embedding word-level emotion by tagging an emotion for each of words in utterances of input dialogue data with reference to a word-emotion association lexicon in which basic emotions are tagged for words for learning; extracting an emotion value of the utterances input; and classifying emotions of the utterances in consideration of change of emotion in the dialogue made in a messenger client, based on the LSTM model, using extracted emotion values of the utterances as input values of the LSTM model. The present invention can appropriately classify emotions by recognizing a change in emotion in a dialogue made in natural language.
    Type: Application
    Filed: February 12, 2020
    Publication date: February 2, 2023
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hojin CHOI, Youngjun LEE
  • Publication number: 20230029579
    Abstract: A power management integrated circuit includes a reconfigurable converter connected to a rechargeable battery and a control circuit. The reconfigurable converter includes an indcutor to accumulate energy based on an input voltage from a thermoelectric device, provides a wireless sensor node connected to an output node with an output voltage based on the input voltage and an internal input voltage of the rechargeable battery, operates in one of operation modes based on an available power provided from the thermoelectric device and a power consumption by the wireless sensor node and drives the wireless sensor node in response to the wireless sensor node consuming a current greater than a maximum current generated by the thermoelectric device. The control circuit to control the reconfigurable converter based on the input voltage, a first voltage of a first switching node, a second voltage of a second switching node and the output voltage.
    Type: Application
    Filed: April 26, 2022
    Publication date: February 2, 2023
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang-Gug Lee, Young-Seok Noh, Jeong-Il Seo, Won-Jong Choi
  • Publication number: 20230030949
    Abstract: Disclosed is a synaptic device, a reservoir computing device using the synaptic device, and a reservoir computing method using the reservoir computing device. The synaptic device includes a substrate and a plurality of units cells on the substrate, wherein the unit cells each include a channel layer and a first electrode and second electrode intersecting the channel layer, wherein the first electrode and the second electrode are spaced apart from each other, and define a gap region exposing a portion of the channel layer, and the channel layer includes a 2-dimensional semiconductor material or a 2-dimensional ferroelectric material.
    Type: Application
    Filed: May 5, 2022
    Publication date: February 2, 2023
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Heejun YANG, Linfeng SUN
  • Patent number: 11566959
    Abstract: The present invention relates to a flexible pressure sensor using a multi-material 3D-printed microchannel mold, and a method for manufacturing the same. An object of the present invention is to provide a flexible pressure sensor using a multi-material 3D-printed microchannel mold, the flexible pressure sensor being formed by using a conductive liquid and an elastomer, having a microchannel formed therein, and having improved flexibility, sensitivity, and stability in comparison to the related art. Another object of the present invention is to provide a method for manufacturing a flexible pressure sensor using a multi-material 3D-printed microchannel mold, in which the flexible pressure sensor is manufactured by using the microchannel mold including microbumps, the microchannel mold being multi-material 3D-printed by using a sacrificial material and a hard material.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: January 31, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Inkyu Park, Kyuyoung Kim
  • Patent number: 11565245
    Abstract: The present invention relates to a catalyst composition comprising a gold nanoparticle superlattice embedded in hierarchical porous silica and a method for manufacturing the same. The catalyst composition comprising a gold nanoparticle superlattice embedded in hierarchical porous silica according to the present invention comprises micropores and mesopores in the superlattice, so that these pores are channelized to allow the rapid access of reactants to surfaces of gold nanoparticles, and the catalyst composition is very structurally stable and has excellent catalytic activity, and thus has an effect of exhibiting a CO conversion rate of 100% at room temperature.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: January 31, 2023
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Sung Min Choi, Shin Hyun Kang
  • Patent number: 11568962
    Abstract: The present invention relates to a method for predicting a drug-drug interaction and a drug-food interaction by using structural information of a drug and, more particularly, to a method for predicting the mechanism of action and activity of a drug interaction through interaction prediction results expressed by a standardized sentence. When using a method for predicting a drug interaction according to the present invention, a drug interaction can be predicted quickly and accurately, and in particular, activity information of an unknown compound can also be predicted by expressing a prediction result by means of a sentence, and thus the method is very useful for developing a drug exhibiting desired activity without causing adverse effects.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: January 31, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Yup Lee, Jae Yong Ryu, Hyun Uk Kim
  • Patent number: 11563606
    Abstract: A method for detecting on-off keying symbols includes receiving, by each of distributed Rx nodes, a pilot signal for a pilot symbol transmitted from a transmitter, the distributed Rx nodes constituting the wireless body area communication network, obtaining, by each of the Rx nodes, a reference value using the received pilot signal, transmitting, by each of the Rx nodes, received data signal to a fusion center when the data signal for the on-off keying symbol transmitted from the transmitter is received by each of the Rx nodes, calculating, by the fusion center, a weight of the on-off keying symbol for each of the Rx nodes using the reference value obtained from each of the Rx nodes and the received data signal, and detecting, by the fusion center, the on-off keying symbol transmitted from the transmitter using the weight of the on-off keying symbol calculated for each of the Rx nodes.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: January 24, 2023
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Junil Choi, Jihoon Cha
  • Patent number: 11559215
    Abstract: A method for measuring a high-accuracy and real-time heart rate based on a continuous-wave radar is provided. The method includes receiving an in-phase (I) signal and a quadrature (Q) signal for a receive signal received through the continuous-wave radar, selecting any one signal by comparing magnitudes of the received I signal and the received Q signal, performing frequency transform of each of bases respectively having predetermined phases with respect to the any one selected signal, and determining a heart rate based on a magnitude response of each of the bases by the frequency transform.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: January 24, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seong Ook Park, Junhyeong Park
  • Publication number: 20230013763
    Abstract: A modulation scheme conversion device includes: a backscattering tag to which a tag signal is provided; and a tag signal forming unit for forming a tag signal. The modulation scheme conversion device multiplies a radio signal, which has been modulated in a first modulation scheme, and a tag signal, and reconfigures the multiplied signal by using a second modulation scheme, so as to backscatter the reconfigured signal, wherein the reconfiguration is performed in a physical (PHY) layer.
    Type: Application
    Filed: August 3, 2020
    Publication date: January 19, 2023
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jin Hwan JUNG, Song Min KIM, Ji Hoon RYOO, Yung YI
  • Publication number: 20230020610
    Abstract: A battery cell assembly electrically connected to a circuit board and a battery package including multiple battery cell assemblies are disclosed. The battery cell assembly includes a battery cell forming electrodes with opposite polarities on the upper and the lower ends, one end fixed to the upper end electrode so that an electric current can flow, the first connector including the other end extended in a direction away from the center of the battery cell, is made of metal plate, and includes the second connector including the other end extended in a direction away from the center of the battery cell. The other end of the first connector and the other end of the second connector are extended in directions, so that the space between the two ends gets wider as they approach the bottom end, and directions that the two ends are not parallel with each other.
    Type: Application
    Filed: October 29, 2020
    Publication date: January 19, 2023
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Cheolwoo LIM, Gunsoo SHIN, Taeseong JANG, Wonho CHA, Jinkyu KIM, Sangki CHOI, Joungki SEO
  • Patent number: 11555086
    Abstract: The present invention relates to a method of synthesizing hydrocarbon polymers using a deoxygenation reaction, wherein, by deoxygenating polymers including oxygen atom-containing functional groups in side chains thereof to thereby remove the functional groups of the side chains, various block copolymers including polyolefins and hydrocarbon polymers with complex architectures can be synthesized.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: January 17, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Myungeun Seo, Chung Sub Jeon, Sukbok Chang, Dong Wook Kim, Taeseok Oh, Seong Jang Jeon
  • Patent number: 11555884
    Abstract: A method for mitigating a leakage signal in an FMCW radar and a radar system thereof are disclosed. The method for mitigating the leakage signal in the radar system includes generating an in-phase signal and a quadrature signal for a beat signal, generating a complex signal using the in-phase signal and the quadrature signal, concentrating a phase noise of the leakage signal included in the complex signal on a stationary point, and mitigating the phase noise based on stationary point concentration (SPC) of the phase noise.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: January 17, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: SeongOok Park, Junhyeong Park
  • Patent number: 11558171
    Abstract: A method for encryption according to an embodiment includes generating a ciphertext for a secret key that is an integer vector by using an integer-based first homomorphic encryption algorithm, generating a key stream that is the integer vector from a nonce and the secret key by using a key stream generator, encoding the key stream by using a message encoding function of the first homomorphic encryption algorithm, encoding a message that is a real vector by using a message encoding function of a real number-based second homomorphic encryption algorithm, generating a ciphertext for the message by using a result of the encoding of the key stream and a result of the encoding of the message, and transmitting the nonce, the ciphertext for the secret key, and the ciphertext for the message to an apparatus for converting a ciphertext.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: January 17, 2023
    Assignees: SAMSUNG SDS CO., LTD., Korea Advanced Institute of Science and Technology
    Inventors: Joo Hee Lee, Duk Jae Moon, Hyo Jin Yoon, Ji Hoon Cho, Eun Kyung Kim, Seong Kwang Kim, Joo Young Lee, Jin Cheol Ha, Won Seok Choi
  • Patent number: 11557401
    Abstract: A method for operating an apparatus for predicting confirmed cases of an infectious disease is provided. The method comprises predicting infectious disease information per country, including an infection risk per country, expected number of entrants per country, and number of imported cases per country, based on collected epidemic statistics data per country and inflow data between a corresponding country and a destination country, grouping two or more countries based on geographic or economic relevance, and correcting the infectious disease information per country of countries within a grouped group according to a contagion risk impact set depending on a correlation between the countries within the group, and predicting total number of imported cases flowing into the destination country by re-correcting the infectious disease information per country through applying a correlation for the confirmed cases of the infectious disease between groups to the infectious disease information per country.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: January 17, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jae-Gil Lee, Minseok Kim, Junhyeok Kang, Doyoung Kim, Hwanjun Song, Hyangsuk Min, Youngeun Nam, Dongmin Park
  • Patent number: 11552715
    Abstract: Disclosed are a body channel communication method and an apparatus performing the same. An operating method of a transmitter includes obtaining an input signal including biometric information, generating an encoded signal and a control signal by encoding the input signal, generating a return-to-zero (RZ) signal of a biphasic waveform based on the encoded signal, and transmitting the RZ signal through a body channel.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: January 10, 2023
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Minkyu Je, Yeseul Jeon, Chongsoo Jung
  • Patent number: 11552267
    Abstract: The present disclosure provides a soft memristor for soft neuromorphic system including a substrate, a first electrode layer formed on the substrate, a metal diffusion barrier layer formed on the first electrode layer, a resistive switching material layer formed on the metal diffusion barrier layer, and a second electrode layer formed on the resistive switching material layer.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: January 10, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sung-Yool Choi, Byung Chul Jang, Jun Hwe Cha
  • Patent number: 11547379
    Abstract: Provided are a method and apparatus for correcting scattering artifacts in industrial three-dimensional (3D) cone beam computed tomography (CT) that may prepare raw data acquired from a subject through computed tomography (CT) and a primary signal acquired from shape prior information of the subject, may estimate a scatter kernel based on the raw data and the primary signal, may acquire result data by removing, from the raw data, a scatter signal estimated based on the scatter kernel, and may generate an image from the result data.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: January 10, 2023
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Chang-Ock Lee, Soomin Jeon
  • Patent number: 11543443
    Abstract: An impedance measuring apparatus is disclosed. The impedance measuring apparatus includes an input current generator configured to generate a sinusoidal input signal of a carrier frequency, a first electrode configured to apply the sinusoidal input signal to an object which has an impedance, a second electrode configured to receive an amplitude modulated signal from the object, a first amplifier configured to amplify the received amplitude modulated signal and output a first amplified signal, a baseline signal subtractor configured to subtract a baseline signal generated based on the first amplified signal from the amplitude modulated signal and output a subtraction modulated signal, an analog-to-digital converter (ADC) configured to convert the subtraction modulated signal to a digital modulated signal, and an impedance measurer configured to measure the impedance based on the digital modulated signal.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: January 3, 2023
    Assignees: Samsung Electronics Co., Ltd., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Wonseok Lee, Ji-Hoon Suh, Minkyu Je, Sang Joon Kim
  • Patent number: 11546147
    Abstract: Disclosed is a time division quadrature homodyne CV QKD system, and a continuous variable quantum key distribution system which includes: a transmitter generating an optical pulse of quantum state data by using continuous light according to data of a transmission target encryption key; and a receiver separating the optical pulse received from a channel into two paths and fixing phases of two signals having a time difference of one period of the optical pulse to orthogonal phases, and then generating bit information through state detection by a time division homodyne detection from interacted signals.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: January 3, 2023
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: June-Koo Rhee, Junsang Oh
  • Patent number: 11542483
    Abstract: Disclosed is a recombinant microorganism capable of growing using only carbon dioxide and formic acid by introducing and improving a metabolic pathway for synthesizing pyruvic acid from carbon dioxide and formic acid to enhance pyruvic acid synthesis efficiency and performing additional genetic manipulation, and a method for producing useful substances using the same. Advantageously, the recombinant microorganism is capable of synthesizing pyruvic acid, a C3 organic compound, at a remarkably improved rate, and in particular, grows well even in a medium containing only carbon dioxide and formic acid as carbon sources without a glucose supply, and is thereby capable of synthesizing pyruvic acid and various high value-added compounds using the same as an intermediate product in an economically efficient manner.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: January 3, 2023
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Yup Lee, Junho Bang, Chang Hun Hwang, Jung Ho Ahn, Jong An Lee