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.

公开(公告)号：US20230056325A1

公开(公告)日：2023-02-23

申请号：US17496901

申请日：2021-10-08

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Jae Won MOON ,  Seung Woo KUM ,  Seung Taek OH ,  Mi Seon YU ,  Ji Soo HWANG

IPC: G06F16/25

Abstract: The present invention relates to a method and apparatus for integrating data, including the steps of receiving a data integration signal, extracting at least two types of source data associated with the data integration signal from collected source data, confirming data information of the extracted source data, setting a data regeneration method for integration of the extracted source data based on the data information, setting a regeneration period for integration of the extracted data based on the data information, and performing integration of the extracted data based on the regeneration method and the regeneration period, and it is possible to apply to other exemplary embodiments.

公开(公告)号：US11575740B2

公开(公告)日：2023-02-07

申请号：US17467804

申请日：2021-09-07

Applicant: Korea Electronics Technology Institute

Inventor： Jae Hoon An ,  Young Hwan Kim

IPC: G06F15/173 ,  H04L67/1021 ,  G06F9/50 ,  H04L67/1008

Abstract: There is provided a cloud management method and apparatus for performing load balancing so as to make a service in a cluster that is geographically close in an associative container environment and has a good resource current status. The cloud management method according to an embodiment includes: monitoring, by a cloud management apparatus, available resource current statuses of a plurality of clusters, and selecting a cluster that owns a first service supported by a first cluster an available resource rate of which is less than a threshold value; calculating, by the cloud management apparatus, scores regarding an available resource current status and geographical proximity of each cluster; and performing, by the cloud management apparatus, load balancing of the first service, based on a result of calculating the scores. Accordingly, a delay in a response speed of a service that is required in a distributed environment can be minimized, and a service can be supported to be processed in a geographically close cluster through analysis of geographical closeness (proximity) between an access location where there is a user request and a cluster in which services are distributed.

公开(公告)号：US20230004121A1

公开(公告)日：2023-01-05

申请号：US17781101

申请日：2019-12-06

Applicant: Korea Electronics Technology Institute

Inventor： Ji Soo HONG ,  Sung Hee HONG ,  Young Min KIM

IPC: G03H1/22 ,  G03H1/04

Abstract: Provided is a technology for implementing an AR optical waveguide display capable of showing a hologram image by means of a small and simple system configuration by using an HOE. A holographic display according to an embodiment of the present invention comprises: a light source module for emitting a beam; an optical waveguide through which the emitted beam is incident and propagated; a plurality of holographic optical elements (HOES) for propagating the beam incident to the optical waveguide inside the optical waveguide while totally reflecting the beam; and a modulator for reproducing a holographic image through the progressing beam and propagating the beam to the inside of the optical waveguide while totally reflecting the beam. Accordingly, it is possible to implement, as a small and simple system, an optical waveguide display showing an AR hologram by using an optical waveguide and an HOE.

公开(公告)号：US20220410574A1

公开(公告)日：2022-12-29

申请号：US17780117

申请日：2020-11-10

Applicant: Korea Electronics Technology Institute

Inventor： Hwa Seon SHIN ,  Sung Hun PARK ,  Hye In LEE ,  Sung Hwan CHUN ,  Jin Min JANG

IPC: B41J2/165 ,  B41J2/21

Abstract: Provided is a nozzle clogging defect compensating method for compensating for a nozzle clogging defect appearing in a binder jetting stack manufacturing means. The nozzle clogging defect compensating method according to an embodiment of the present invention comprises the steps of: determining a defect occurrence region when a clogging defect of a nozzle used in the binder jetting stack manufacturing means occurs; determining whether compensation for the detect occurrence region is possible; when the compensation is possible, generating defect information and reflecting the defect information in an output code; setting a defect compensation region on the basis of the defect information; determining a defect compensation type of the defect compensation region; and reflecting a result of the determining in the output code. Accordingly, a replacement time and a replacement cost of an output head where the nozzle clogging defect has occurred can be saved, thereby reducing the unit production cost of a binder jetting type stack manufacturing output.