公开(公告)号：US20230218941A1

公开(公告)日：2023-07-13

申请号：US17784164

申请日：2019-12-11

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Yeonkug MOON ,  Donghyun LEE ,  Minjoon KIM ,  Sunghun CHAE ,  Youngbo SHIM

IPC: A63B17/00 ,  A63B24/00

CPC classification number: A63B17/00 ,  A63B24/0062 ,  A63B2024/0068 ,  A63B2230/06 ,  A63B2220/833 ,  A63B2230/20 ,  A63B2220/803 ,  A63B69/0048

Abstract: The disclosure of the present invention relates to a play experience system and a physical development status acquisition method using the same, which can precisely measure physical development items of users including children and juveniles by using play-type experience devices, and can acquire experience data based physical development status by analyzing a correlation between an experience instrument itself and the physical development item.

公开(公告)号：US20230199830A1

公开(公告)日：2023-06-22

申请号：US18085349

申请日：2022-12-20

Applicant: Korea Electronics Technology Institute

Inventor： Tai Gil KWON

IPC: H04W74/04 ,  H04W74/08

CPC classification number: H04W74/04 ,  H04W74/0866 ,  H04W80/06

Abstract: A wireless transmission scheduling method is proposed. The method may be a synchronous media access control (MAC) wireless transmission scheduling method optimized for a user datagram protocol (UDP) of a personal wireless network-based data transmission system. The method may include setting a superframe period, a beacon period, and a contention period by a master station in a network. The method may also include calculating transmission periods of one or more slave stations participating in the network and a transmission period of the master station. The method may further include transmitting information about the calculated transmission periods of the one or more slave stations to the one or more slave stations participating in the network. The method may further include transmitting data by the one or more slave stations and the master station in the transmission periods assigned to the one or more slave stations and the master station.

公开(公告)号：US20230194722A1

公开(公告)日：2023-06-22

申请号：US18083868

申请日：2022-12-19

Applicant: Korea Electronics Technology Institute

Inventor： Haeng Seon SON ,  Kyoung Won MIN ,  Seon Young LEE ,  Jin Man PARK ,  Young Bo SHIM ,  Chang Gue PARK ,  Gi Ho SUNG ,  Yeong Kwon CHOE

IPC: G01S17/89 ,  G01S7/4861

CPC classification number: G01S17/89 ,  G01S7/4861

Abstract: There are provided an apparatus and a method for LiDAR data conversion for training various types of autonomous vehicles by using pre-acquired data. A method for converting LiDAR data according to an embodiment includes: receiving an input of first LiDAR data which is pre-acquired through a first LiDAR sensor mounted in a first vehicle; converting the inputted first LiDAR data into second LiDAR data which is acquired through a second LiDAR sensor mounted in a second vehicle; and outputting the converted second LiDAR data, and converting includes converting the first LiDAR data into LiDAR data on a reference coordinate system, and converting the converted LiDAR data into the second LiDAR data which is LiDAR data on a coordinate system of the second LiDAR sensor.

公开(公告)号：US20230187825A1

公开(公告)日：2023-06-15

申请号：US18073720

申请日：2022-12-02

Applicant: Korea Electronics Technology Institute

Inventor： Soo Chang CHAE ,  Ki Jin KIM ,  Kwang Ho AHN

IPC: H01Q3/36 ,  G01S13/44

CPC classification number: H01Q3/36 ,  G01S13/4463

Abstract: There is provided a feeding network device for improved direction estimation. The feeding network device according to an embodiment of the disclosure includes a first coupler, a second coupler, a first delay, a second delay, a crossover, a third coupler, a fourth coupler, a third delay, and a fourth delay. Accordingly, one sum beam and a plurality of difference beams are emitted through the feeding network device of the array antenna, and improved direction estimation is possible through a plurality of monopulse ratios, and accordingly, improvement of direction estimation in a monopulse radar device is expected.

公开(公告)号：US20230160968A1

公开(公告)日：2023-05-25

申请号：US18058191

申请日：2022-11-22

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junghoon Ahn ,  Sunggeun Song ,  Byungchul Park ,  Kyoochang Jeong ,  Seongmun Oh

IPC: G01R31/389 ,  G01R31/3842

CPC classification number: G01R31/389 ,  G01R31/3842

Abstract: An apparatus for measuring the internal resistance of battery cells in a variable number unit in an online state is proposed. The apparatus may include a switch array, a variable resistor, a high-speed switch, a measurement sensor, and a controller. The switch array configures a measurement target battery cell by selecting at least one battery cell from among a plurality of battery cells included in a battery module. The variable resistor is connected to the measurement target battery cell via the switch array. The high-speed switch switches a connection between the measurement target battery cell and the variable resistor. The measurement sensor detects a measurement voltage of the measurement target battery cell and a measurement current of the measurement target battery cell in an online state of the battery module. The controller derives an internal resistance of the measurement target battery cell through the measurement voltage and the measurement current.

公开(公告)号：US20230153317A1

公开(公告)日：2023-05-18

申请号：US17985994

申请日：2022-11-14

Applicant: Korea Electronics Technology Institute

Inventor： Jae Hoon AN ,  Young Hwan KIM

IPC: G06F16/25 ,  G06F16/2453

CPC classification number: G06F16/252 ,  G06F16/24542

Abstract: There is provided a method for scheduling offloading snippets based on a large amount of DBMS task computation. A DB scheduling method according to an embodiment of the disclosure includes determining, by a DBMS, whether to offload a part of query computations upon receiving a query execution request from a client, generating, by the DBMS, an offloading code which is a code for offloading a part of the query computations, based on the received query, when offloading is determined, selecting one of the plurality of storages in which a DB is established, and delivering the offloading code. Accordingly, snippets which will be generated simultaneously are scheduled for CSDs, so that resources are equally utilized, a query execution time is reduced, and reliability on data processing is enhanced.

公开(公告)号：US20230145380A1

公开(公告)日：2023-05-11

申请号：US18053222

申请日：2022-11-07

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Jong Min YOOK ,  Je In YU ,  Dong Su KIM

IPC: H01P3/12 ,  H01L23/498 ,  H01L23/043 ,  H01L21/48 ,  H01P11/00

CPC classification number: H01P3/121 ,  H01L23/49827 ,  H01L23/043 ,  H01L21/486 ,  H01P11/002

Abstract: A waveguide package and a method for manufacturing the same are disclosed. The waveguide package includes a package structure including a waveguide opened toward one side surface of a substrate, a semiconductor chip mounted on one surface of the package structure and configured to output an electrical signal to the waveguide. Since an interior of the waveguide is filled with air, electrical loss of the waveguide is minimized The cavity is formed by processing the substrate made of photosensitive glass. Accordingly, the waveguide may be accurately formed. An electronic circuit may also be formed at the waveguide package. Accordingly, it may be possible to provide a waveguide package enhanced in degree of integration.

公开(公告)号：US20230143531A1

公开(公告)日：2023-05-11

申请号：US17980758

申请日：2022-11-04

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Kyoungwon PARK ,  Chuljong HAN ,  Jeongmin YI

IPC: H01L31/055 ,  C09K11/02 ,  C08F220/18

CPC classification number: H01L31/055 ,  C09K11/02 ,  C08F220/1811 ,  H01L31/042

Abstract: A light concentrator based on a quantum dot may include a resin film layer in which quantum dots are dispersed, an upper layer in contact with an upper surface of the resin film layer, and a lower layer in contact with a lower surface of the resin film layer. Each of the upper layer and the lower layer may be selected from a glass layer or a polymer layer. A photovoltaic module may include the quantum dot-based light concentrator. By optimally adjusting the longest wavelength of the quantum dots, the average transmittance of the glass layer, the material of the polymer layer, and the cross-sectional aspect ratio (length/thickness) of the light concentrator, it is possible to maximize the efficiency of the quantum dot-based light concentrator and increase the efficiency of the photovoltaic module including the light concentrator.

公开(公告)号：US20230129420A1

公开(公告)日：2023-04-27

申请号：US17452032

申请日：2021-10-22

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Chang Seok YUN ,  Young Han KIM ,  Hyun Seuk AHN

IPC: H02J50/23 ,  H02J50/40

Abstract: This application relates to an extremely high frequency (mmWave) wireless power transfer device, method, and system using a Rotman lens. The device includes a radio frequency (RF) chain including transmitters individually generating signals of a mmWave band, and adjusting phase and amplitude of each generated signal. The device may also include a switch matrix connected to the RF chain, having a matrix structure, and generating a beam pattern where the adjusted signals are combined through the switches. The device may further include a Rotman lens connected to the switch matrix and performing a signal beamforming of the beam pattern according to predetermined transmission paths, an antenna part connected to the Rotman lens and radiating the beamformed signal, and a controller controlling at least one of the phase, amplitude, beam pattern, or transmission path of the signal so that the signal is radiated.

公开(公告)号：US20230081954A1

公开(公告)日：2023-03-16

申请号：US17897502

申请日：2022-08-29

Applicant: Korea Electronics Technology Institute

Inventor： Intae SEO ,  Hyung Won KANG ,  Seung Ho HAN ,  Myong Jae YOO ,  Hyunseung YANG

IPC: H01L41/187 ,  H01L41/37 ,  H01L41/312 ,  H01L41/047 ,  H01L41/338 ,  H01L41/193

Abstract: Disclosed is a method for manufacturing a laminated piezoelectric composite. The method includes wet-mixing ceramic powder, a polymer binder, a plasticizer and a solvent for 4 to 72 hours so as to generate a mixed slurry, introducing the mixed slurry into a tape casting process so as to prepare a plurality of piezoelectric composite sheets, drying and forming the plurality of piezoelectric composite sheets using a roll-to-roll process so as to prepare the plurality of formed piezoelectric composite sheets, forming internal electrodes on the plurality of piezoelectric composite sheets so as to prepare the plurality of piezoelectric composite sheets having the internal electrodes, laminating and pressing the plurality of piezoelectric composite sheets having the internal electrodes so as to generate a piezoelectric composite sheet laminate having the internal electrodes, and cutting the piezoelectric composite sheet laminate having the internal electrodes into a desired shape and size.