公开(公告)号：US11741755B2

公开(公告)日：2023-08-29

申请号：US16942985

申请日：2020-07-30

Applicant: Korea Electronics Technology Institute

Inventor： Sang Ki Ko ,  Hye Dong Jung ,  Han Mu Park ,  Chang Jo Kim

IPC: G06V40/00 ,  G06V40/20 ,  G06F3/01 ,  G06N3/084 ,  G10L13/00 ,  G06N3/045 ,  G10L15/24 ,  G06V10/764 ,  G06V10/82 ,  G06V10/44

CPC classification number: G06V40/28 ,  G06F3/011 ,  G06F3/017 ,  G06N3/045 ,  G06N3/084 ,  G06V10/454 ,  G06V10/764 ,  G06V10/82 ,  G10L13/00 ,  G10L15/24

Abstract: A method and apparatus for recognizing a sign language or a gesture by using a three-dimensional (3D) Euclidean distance matrix (EDM) are disclosed. The method includes a two-dimensional (2D) EDM generation step for generating a 2D EDM including information about distances between feature points of a body recognized in image information by a 2D EDM generator, a 3D EDM generation step for receiving the 2D EDM and generating a 3D EDM by using a first deep learning neural network trained with training data in which input data is a 2D EDM and correct answer data is a 3D EDM by a 3D EDM generator, and a recognition step for recognizing a sign language or a gesture based on the 3D EDM.

公开(公告)号：US20230249257A1

公开(公告)日：2023-08-10

申请号：US17623146

申请日：2021-11-03

Applicant: Korea Electronics Technology Institute

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

IPC: B22F10/85 ,  B22F10/368 ,  B22F10/366 ,  B22F12/90 ,  B22F10/28

CPC classification number: B22F10/85 ,  B22F10/368 ,  B22F10/366 ,  B22F12/90 ,  B22F10/28

Abstract: Provided is a tool path optimization method for minimizing thermal unbalance in metal 3D printing. The tool path optimization method according to an embodiment of the present disclosure includes: a slicing step of generating stratum data by slicing a 3D model; a tool path data generation step of generating tool path data including a moving path of a tool which is moved inside a stratum, by applying equipment settings to the generated stratum data; a thermal data generation step of generating thermal data A of a first stratum and thermal data B1, B2, B3 of three lower layers of the first stratum, based on the tool path data; a thermal data analysis step of generating a thermal data contour by combining the thermal data A, B1, B2, B3; a thermal data application step of identifying an area where thermal unbalance is concentrated based on the thermal data contour, and setting an identification area D; and a tool path optimization step of optimizing a tool path for the identification area D. Accordingly, by correcting and regenerating a tool path to minimize thermal unbalance, based on thermal data which is a result of simulating thermal unbalance occurring when metal additive manufacturing is performed, costs incurred in current metal 3D printing manufacturing sites may be saved.

公开(公告)号：US20230244119A1

公开(公告)日：2023-08-03

申请号：US18099682

申请日：2023-01-20

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Soon Hyung KWON

IPC: G02F1/1676 ,  G02F1/16755 ,  F41H3/02

CPC classification number: G02F1/1676 ,  G02F1/16755 ,  F41H3/02 ,  G02F2203/02

Abstract: A reflective color conversion film is disclosed The reflective color conversion film includes a base layer formed of a flexible material, a plurality of unit panels formed on the base layer and configured to reflect light incident from an outside, thereby displaying a color, a plurality of signal lines formed on the base layer and connected to the plurality of unit panels, to transmit a control signal for control of color change of the unit panels, and a plurality of cutting lines configured to indicate a line capable of cutting the base layer without cutting the signal lines. The reflective color conversion film camouflages an object to be camouflaged by covering the object in accordance with a shape of the object while closely contacting the object.

公开(公告)号：US20230207826A1

公开(公告)日：2023-06-29

申请号：US18065110

申请日：2022-12-13

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Sanggil WOO ,  Jenam LEE

IPC: H01M4/62

CPC classification number: H01M4/625 ,  H01M4/626 ,  H01M2004/027

Abstract: An anode containing a multi-composite conductive agent and a lithium secondary battery including the anode are proposed. The anode may include an anode active material containing a carbon-based material and a metal-based compound, a binder, and a multi-composite conductive agent containing a carbon-based conductive agent and a metal-based conductive agent having different physical properties and shapes. According to some embodiments, the anode can increase energy density and also improve electrical conductivity and electron mobility.

公开(公告)号：US20230187692A1

公开(公告)日：2023-06-15

申请号：US18163699

申请日：2023-02-02

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Suk CHO ,  Kyung Su KIM ,  Ji Sang YU ,  Goo Jin JEONG ,  Keon Ho PARK

IPC: H01M10/0562

CPC classification number: H01M10/0562 ,  H01M2300/008

Abstract: A solid electrolyte having satisfactory moisture stability and ion conductivity through activation energy improvement and a solid-state battery including the same are proposed. The solid electrolyte may include an oxysulfide-based compound represented by the following chemical formula: [Chemical formula] LiaMbPcSdOeXf, wherein 5≤a≤7, 0

公开(公告)号：US20230176011A1

公开(公告)日：2023-06-08

申请号：US17709567

申请日：2022-03-31

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Dae Sung LEE ,  Kwang Bum PARK

IPC: G01N27/66

CPC classification number: G01N27/66

Abstract: Disclosed is a photoionization gas sensor including an ultraviolet generating module having a first substrate, a second substrate, and a third substrate sequentially coupled in a vertical direction, and configured to generate ultraviolet by applying an electric field to a noble gas filling a first cavity, the first cavity formed in a central portion of the second substrate, and a measuring module configured to collect an electrical signal, the electrical signal being generated such that an electric field is applied to a passage, through which gas ionized by ultraviolet passes, so as to allow the ionized gas to come into contact with an electrode, thereby having a small volume and being operated at a low voltage.

公开(公告)号：US20230156976A1

公开(公告)日：2023-05-18

申请号：US17986130

申请日：2022-11-14

Applicant: Korea Electronics Technology Institute

Inventor： Jae Hoon AN ,  Young Hwan KIM

IPC: H05K7/20

CPC classification number: H05K7/20836 ,  H05K7/20718

Abstract: There is provided an adaptive temperature control method based on log analysis of a chassis manager in an edge server. The adaptive temperature control method of the edge server system according to an embodiment includes: collecting, by a chassis manger module of the edge server system, work logs of a computing module and a storage module; predicting a future work load from the collected work logs; predicting a future internal temperature of the edge server system, based on the work load and a future temperature; and controlling, by the chassis manager module, the edge server system, based on the predicted future internal temperature. Accordingly, a configuration module of an edge server system may be managed/controlled in a rugged environment, and temperature of the edge server system may be adaptively controlled by transferring or additionally generating works of an edge server.

公开(公告)号：US20230155958A1

公开(公告)日：2023-05-18

申请号：US17983770

申请日：2022-11-09

Applicant: Korea Electronics Technology Institute

Inventor： Jae Hoon AN ,  Young Hwan KIM

IPC: H04L47/783

CPC classification number: H04L47/783

Abstract: There are provided a method and an apparatus for cloud management, which selects optimal resources based on graphic processing unit (GPU) resource analysis in a large-scale container platform environment. According to an embodiment, a GPU bottleneck phenomenon occurring in an application of a large-scale container environment may be reduced by processing partitioned allocation of GPU resources, rather than existing 1:1 allocation, through real-time GPU data analysis (application of a threshold) and synthetic analysis of GPU performance degrading factors.

公开(公告)号：US20230134115A1

公开(公告)日：2023-05-04

申请号：US18047548

申请日：2022-10-18

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Byongjin MA

IPC: H01S5/06 ,  H01S5/068 ,  H01S5/062

Abstract: A wavelength stabilizer that performs wavelength stabilization using thermal characteristics of a laser diode without using additional components such as an etalon filter, and an optical module including the wavelength stabilizer, are proposed. The wavelength stabilizer for the optical module stabilizes the wavelength of laser light outputted from the laser diode and includes a controller constantly maintaining a junction temperature of the laser diode. The controller may constantly maintain the junction temperature of the laser diode through a thermoelectric cooler.

公开(公告)号：US11613082B2

公开(公告)日：2023-03-28

申请号：US17256849

申请日：2020-02-20

Applicant: Korea Electronics Technology Institute

Inventor： Hwa Seon Shin ,  Hye In Lee ,  Sung Hwan Chun ,  Ji Min Jang ,  Sung Hun Park

IPC: B29C64/386 ,  B29C64/40 ,  B33Y50/02 ,  G06T17/20 ,  B22F10/38 ,  B22F10/47 ,  B22F10/80 ,  G06T19/20 ,  B33Y50/00

Abstract: A method for producing a support structure of a 3D model for 3D printing is provided. A method for producing a support according to an embodiment of the present invention comprises the steps of: dividing a surface constituting a 3D model into multiple surface patches; classifying respective divided surface patches according to geometric characteristics; and producing supports corresponding to the classified characteristics with regard to respective surface patches. Accordingly, during metal laminate manufacturing, the output stability may be improved while reducing the support producing process time. In addition, the surfaces may be expressed by different colors according to the result of geometric characteristic classification, and the supports may also be expressed by different colors according to the type, thereby playing the role of guide lines such that the user can recognize the shape of the surfaces and the type of supports to be installed on the corresponding surfaces. Moreover, the size of a support tip is determined in view of the thickness of the area in which a support is to be produced, thereby preventing the problem of output quality degradation which would otherwise occur because the support cannot move upwards through an output part.