公开(公告)号：US20250042081A1

公开(公告)日：2025-02-06

申请号：US18717298

申请日：2022-12-06

Applicant: MarrIxcELL BIO Co., LTD. ,  Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Insup NOH ,  Amitava BHATTACHARYYA

IPC: B29C64/118 ,  B29C48/02 ,  B29C48/25 ,  B29C48/40 ,  B29C48/435 ,  B29C48/535 ,  B29C48/68 ,  B29C64/209 ,  B29C64/218 ,  B29C64/268 ,  B29C64/321 ,  B29K105/00 ,  B29L31/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00

Abstract: Disclosed in the present application are: a pen-type structure for mixing and discharging a bio-ink or a hydrogel: and a bio-ink or hydrogel printing method using same. The pen-type structure comprises: a cylindrical first barrel for housing a first screw; a cylindrical second barrel for housing a second screw, which is longer than the first screw and has a structure parallel with the first screw; a controller connected to a gear of the first screw and a gear of the second screw so as to drive the first screw and the second screw; two or more supply units formed in the first barrier and supplying a bio-ink or hydrogel material into the first barrel; and a bio-ink or hydrogel discharge unit which extends from the end portion of the second barrel on the opposite side of the controller, and which discharges bio-ink or hydrogel.

公开(公告)号：US12178616B2

公开(公告)日：2024-12-31

申请号：US17974681

申请日：2022-10-27

Applicant: Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Seong Eun Kim

IPC: A61B5/00 ,  A61B5/372 ,  G16H50/20 ,  G06F3/01

Abstract: An electronic device according to an example embodiment includes a processor, and a memory operatively connected to the processor and including instructions executable by the processor, wherein when the instructions are executed, the processor is configured to collect an EEG signal measuring brain activity and an fNIRS signal measuring the brain activity, and output a result of determining a type of the brain activity from a trained neural network model using the EEG signal and the fNIRS signal, and the neural network model may be trained to, extract an EEG feature from the EEG signal, extract an fNIRS feature from the fNIRS signal, extract a fusion feature based on the EEG signal and the fNIRS signal, and output the result of determining the type of the brain activity based on the EEG feature and the fusion feature.

公开(公告)号：US20240396771A1

公开(公告)日：2024-11-28

申请号：US18419570

申请日：2024-01-23

Applicant: Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Won Young Lee ,  Young Min Lee

IPC: H04L25/49 ,  H03M5/20

Abstract: Proposed is a device for receiving a four-level pulse amplitude modulation (PAM-4) signal, which includes a first comparator for comparing a received PAM-4 signal with a predetermined threshold voltage to output a most significant bit (MSB) signal; and a second comparator for comparing the differential signal difference between the positive signal and negative signal of the received PAM-4 signal with a reference voltage to output a least significant bit (LSB) signal.

公开(公告)号：US20240309512A1

公开(公告)日：2024-09-19

申请号：US18406305

申请日：2024-01-08

Applicant: Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Hyung Jun KOO ,  Ji Hye KIM

IPC: C23C28/02 ,  C23C14/20 ,  C23C14/24 ,  C23C14/58 ,  C23C24/04

CPC classification number: C23C28/021 ,  C23C14/20 ,  C23C14/24 ,  C23C14/58 ,  C23C24/04

Abstract: A method of manufacturing a liquid metal film using an imbibition phenomenon is provided. The method includes forming a microstructure on a polymer substrate, preparing a microstructured metal substrate by depositing a metal on the polymer substrate on which the microstructure is formed, and coating the microstructured metal substrate with a liquid metal.

公开(公告)号：US20240214205A1

公开(公告)日：2024-06-27

申请号：US18166828

申请日：2023-02-09

Applicant: Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Hyun KIM ,  Jong Ho LEE

IPC: H04L9/32 ,  G06T5/10 ,  G06T7/11

CPC classification number: H04L9/3213 ,  G06T5/10 ,  G06T7/11

Abstract: According to various embodiment of the present disclosure, an electronic device for performing token pruning in a frequency domain may include a processor, and the processor may configured to divide an image frame into a plurality of patches, convert tokens based on the plurality of patches from a spatial domain to a frequency domain through a fast Fourier transform (FFT)-based frequency domain conversion algorithm, the tokens being output from a predetermined transformer block among a plurality of transformer blocks, after performing patch embedding on the plurality of patches, and convert the remaining tokens other than specific tokens from the frequency domain to the spatial domain, after pruning specific tokens from the tokens based on frequency information of the tokens converted into the frequency domain. Various other embodiments are also possible.

公开(公告)号：US20240051411A1

公开(公告)日：2024-02-15

申请号：US18054759

申请日：2022-11-11

Applicant: Kia Corporation ,  Hyundai Motor Company ,  Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： In Yong Yeo ,  Youn Sik Lee ,  Se Wan Choi

IPC: B60L53/20 ,  B60L58/18 ,  H02J7/34 ,  H02M3/158 ,  H01M10/42 ,  H01M10/44

CPC classification number: B60L53/20 ,  B60L58/18 ,  H02J7/342 ,  H02M3/158 ,  H01M10/425 ,  H01M10/44 ,  B60L2210/12 ,  H02J2207/20 ,  H01M2010/4271 ,  H01M2220/20

Abstract: In an embodiment, a power conversion system includes: an on-board charger; 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 the auxiliary battery, the power converter comprising a bypass circuit and a buck switch. A part of the on-board charger and the power converter constitute a DC-DC converter, and the buck switch is configured to be repeatedly switched on and off when a voltage of the auxiliary battery is higher than a voltage of the main battery, and does not operate when the voltage of the auxiliary battery is not higher than the voltage of the main battery.

公开(公告)号：US11792392B2

公开(公告)日：2023-10-17

申请号：US17717073

申请日：2022-04-09

Applicant: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Juhyung Son ,  Fathan Adi Pranaya ,  Jinsam Kwak ,  Jihoon Yun

IPC: H04N19/105 ,  H04N19/103 ,  H04N19/167 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597 ,  H04N19/40 ,  H04N19/70 ,  H04N13/332 ,  G06F3/01

CPC classification number: H04N19/105 ,  H04N19/103 ,  H04N19/167 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597 ,  G06F3/012 ,  H04N13/332 ,  H04N19/40 ,  H04N19/70

Abstract: An encoding acceleration method of cloud VR (virtual reality) video, the method comprising: constructing a reference frame candidate for encoding of a current frame; selecting a specific reference frame among the reference frame candidate based on a sensor data of IMU (Inertial Measurement Unit); selecting a prediction mode for encoding the current frame based on information included in the specific reference frame; and encoding the current frame based on the selected prediction mode.

公开(公告)号：US20230246555A1

公开(公告)日：2023-08-03

申请号：US18007741

申请日：2021-02-02

Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Sewan CHOI ,  Gi Bum YU

IPC: H02M3/335 ,  H02M3/00 ,  H02M1/08 ,  H02J7/00 ,  H02J7/02

CPC classification number: H02M3/33573 ,  H02M3/01 ,  H02M1/08 ,  H02J7/0013 ,  H02J7/02 ,  H02J2207/20

Abstract: Disclosed is a unitary charging device for low and high voltages. According to a specific embodiment, one leg of a switching element of an insulated DC-DC converter, the secondary side of a high voltage transformer, and the primary side of a low voltage transformer are shared, and thus the number of switching elements of the charging device and gate drivers for operating the multiple switching elements can be reduced, reliability is improved, and the performance of the unitary charging device can improve even when the number of switching elements is reduced. Due to the shared use of an EMI filter and an input capacitor of a high voltage battery, not only can the price and volume of the charging device be decreased, but conduction loss and switching loss can also be reduced to increase efficiency.

公开(公告)号：US11683460B2

公开(公告)日：2023-06-20

申请号：US17494808

申请日：2021-10-05

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.

公开(公告)号：US11656154B2

公开(公告)日：2023-05-23

申请号：US17473369

申请日：2021-09-13

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Young Sam Yoon ,  Ji Su Park ,  Ki Ho Yum ,  Sung Dae Kim ,  Kyu Ho Sim

IPC: G01M17/02 ,  G06F17/18

CPC classification number: G01M17/02 ,  G06F17/18

Abstract: A method of matching a wheel and a tire includes steps of: measuring inner runout and outer runout of a wheel; extracting and setting a primary component of a measurement waveform of the inner runout as an inner runout waveform and extracting and setting a primary component of a measurement waveform of the outer runout as an outer runout waveform; comparing an inner minimum value that is a minimum value of the inner runout waveform and an outer minimum value that is the minimum value of the outer runout waveform with a predetermined runout reference value; and determining an assembly reference position of the wheel based on the inner minimum value or the outer minimum value or based on a resultant waveform of the inner runout waveform and the outer runout waveform, depending on a result of the comparing step.