公开(公告)号：US20230084960A1

公开(公告)日：2023-03-16

申请号：US18056144

申请日：2022-11-16

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Junhwan JANG ,  Woochool PARK ,  Jinwook YANG ,  Minsu CHOI ,  Junsuk LEE ,  Bonjae KOO

IPC: G06T19/00

Abstract: An edge server for providing a virtual reality (VR) image is proposed. The server may include a rendering synchronization unit synchronizing a visual field and a margin with a virtual reality device. The server may also include a rendering unit generating a rendered image by rendering a visual field area corresponding to the visual field and a margin area corresponding to the margin based on a rotation center in an entire virtual reality image. The server may further include an encoding unit generating a reduced margin area by dividing a resolution of the margin area by a scaling factor, and encoding the visual field area and the reduced margin area to generate a split virtual reality image including the encoded visual field area and the encoded reduced margin area. The server may further include a streaming transmission unit transmitting the split virtual reality image to the virtual reality device.

公开(公告)号：US11605167B2

公开(公告)日：2023-03-14

申请号：US17126299

申请日：2020-12-18

Applicant: Korea Electronics Technology Institute

Inventor： Choong Sang Cho ,  Charles Hyok Song ,  Young Han Lee

IPC: G06T7/11 ,  H04N19/167 ,  H04N19/176

Abstract: An image region segmentation method and system suing self-spatial adaptive normalization is provided. The image region segmentation system includes: an encoder configured to encode an image for segmenting a region by using a plurality of encoding blocks; and a decoder configured to decode the image encoded by the encoder and to generate a region-segmented image by using a plurality of decoding blocks, wherein each of the encoding blocks processes an inputted image into a convolution layer, performs spatial adaptive normalization, and then reduces the image and delivers the image to the next encoding block. Accordingly, spatial characteristics of the image are considered in an encoding process and a decoding process, so that region segmentation can be exactly performed with respect to various images.

公开(公告)号：US11545975B2

公开(公告)日：2023-01-03

申请号：US17129090

申请日：2020-12-21

Applicant: Korea Electronics Technology Institute

Inventor： Sang Yub Lee ,  Jae Kyu Lee

IPC: G06F1/3234 ,  G06F1/3231 ,  G06F3/0362 ,  H03K17/95 ,  H03K17/97 ,  B60K35/00 ,  H02S40/20 ,  H02S40/38

Abstract: This application relates to a mechanical button apparatus that includes a body where an upper portion thereof is closed and a lower portion thereof is opened and a bottom plate attached on a display screen of a display apparatus to cover the opened lower portion. The body includes an aperture member including a wing set expanded or contracted in a rotation direction of the body. The body also includes a photovoltaic (PV) cell array substrate including a PV cell configured to generate power for charging a battery and an optical sensor configured to convert light signals, reflected by the expanded or contracted wing set, into electrical signals. The body further includes a circuit substrate configured to operate with the power charged into the battery, calculate number of rotation manipulations of the body by using the electrical signals, and transmit the calculated number of rotation manipulations to the display apparatus.

公开(公告)号：US20220414350A1

公开(公告)日：2022-12-29

申请号：US17563299

申请日：2021-12-28

Applicant: Korea Electronics Technology Institute

Inventor： Jin Yea JANG ,  Han Mu PARK ,  Yoon Young JEONG ,  Sa Im SHIN

IPC: G06F40/58 ,  G06F40/53 ,  G06N20/00

Abstract: There are provided a method and system for automatic augmentation of gloss-based sign language translation data. A system for automatic augmentation of sign language translation training data according to an embodiment includes: a database configured to store a sequence of sign language glosses and a sequence of spoken-language words in pairs; and an augmentation module configured to augment the pairs stored in the database. Accordingly, gloss-based training data of high quality may be acquired by performing automatic augmentation for gloss-based training data for sign language translation in an efficient method in terms of time and economic aspects, and eventually, accuracy of translation between sign language glosses and sentences may be enhanced.

公开(公告)号：US20220409067A1

公开(公告)日：2022-12-29

申请号：US17704182

申请日：2022-03-25

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Kunnyun KIM

IPC: A61B5/0205 ,  A61B5/024 ,  A61B5/00

Abstract: Disclosed are an array type skin-conformal sensor for heart rate and body temperature measurement, the array type skin-conformal sensor including a base sheet configured to be attached to the skin in tight contact therewith, the base sheet being made of a skin-conformal material, a measurement portion formed at one surface of the base sheet, the measurement portion being deformed by deformation of the skin, whereby resistance of the measurement portion is changed, and an electrode pattern formed at one surface of the base sheet, one end of the electrode pattern being connected to the measurement portion to transmit a change in resistance of the measurement portion, and a heart rate and body temperature measurement apparatus using the same. Since the skin-conformal sensor is attached to the skin in tight contact therewith, it is possible to measure the heart rate even though a blood vessel is deeply located.

公开(公告)号：US20220393099A1

公开(公告)日：2022-12-08

申请号：US17739287

申请日：2022-05-09

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： In Tae SEO ,  Hyung Won KANG ,  Seung Ho HAN

IPC: H01L41/37 ,  C08J3/21 ,  C08J5/18 ,  C08J5/12 ,  C08K3/22 ,  C08K5/12 ,  H01L41/18 ,  H01L41/338

Abstract: Proposed is a method of manufacturing a piezoelectric composite material. The method includes the steps: wet mixing the ceramic powder, the polymer binder, the plasticizer, and the solvent for 4 to 72 hours to produce the mixed slurry, in which the amount of the polymer binder in the mixed slurry is 3 to 10 parts by weight, the amount of the plasticizer is 0.1 to 3 parts by weight, and the amount of the solvent is 30 or more to less than 50 parts by weight, based on 100 parts by weight of the ceramic powder in the mixed slurry; introducing the mixed slurry into a tape casting process to produce a piezoelectric composite sheet; drying and molding the piezoelectric composite sheet in a roll-to-roll process to form a molded piezoelectric composite sheet; laminating and compressing piezoelectric composite sheets molded to produce piezoelectric composite sheet laminates; and cutting the piezoelectric composite sheet laminate into the desired shape and size.

公开(公告)号：US20220328253A1

公开(公告)日：2022-10-13

申请号：US17709338

申请日：2022-03-30

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

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

IPC: H01G4/33 ,  H01G4/005

Abstract: The present invention provides a method for manufacturing a high frequency capacitor, including preparing a substrate for formation of the capacitor, forming a dielectric layer at an upper surface of the substrate, forming an upper electrode at an upper surface of the dielectric layer, and removing a portion of a lower surface of the substrate, to expose a lower surface of the dielectric layer, and forming a lower electrode at the lower surface of the dielectric layer. The high frequency capacitor includes a dielectric layer having a uniform surface, a thick upper electrode, and a thick lower electrode and, as such, exhibits high quality factor (Q) even at a high frequency.

公开(公告)号：US11424380B2

公开(公告)日：2022-08-23

申请号：US17136747

申请日：2020-12-29

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Kyoungwon Park

IPC: H02N6/00 ,  H01L31/042 ,  H01L31/055 ,  H02S40/22

Abstract: A sunlight concentrating device may include a quantum dot layer having a first surface and a second surface opposite to each other, a first glass layer in contact with the first surface of the quantum dot layer, and a second glass layer in contact with the second surface of the quantum dot layer, and further include a low-refractive layer provided in a predetermined region of the first surface and/or the second surface of the quantum dot layer. The low-refractive layer is patterned, and a refractive index of the low-refractive layer is smaller than a refractive index of the quantum dot layer. The low-refractive layer totally reflects photons, being permeated from the quantum dot layer into the glass layer(s), between the glass layer(s) and the quantum dot layer so that the photons can move within a section with no loss of light thereby overcoming the theoretical limit of light concentration.

公开(公告)号：US20220262071A1

公开(公告)日：2022-08-18

申请号：US17623104

申请日：2020-11-10

Applicant: Korea Electronics Technology Institute

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

IPC: G06T17/20

Abstract: Provided is a method for generating a hollow structure of a 3D model on the basis of a 2D laminated cross-sectional outline to reduce the amount of using a material or the weight of a printed matter during laminating and manufacturing. The method for generating a hollow structure based on a 2D laminated cross-sectional outline, according to an embodiment of the present invention, comprises the steps of: slicing the 3D model; generating a hollow structure outline on the basis of the result of the slicing; detecting an overhang area between adjacent hollow structure outlines; recalculating the hollow structure outline according to the result of detecting the overhang area; and generating a hollow structure mesh on the basis of the recalculated hollow structure outline. Accordingly, because 2D laminated cross-sectional data is used, a hollow structure can be generated without separate data processing, thereby reducing a calculation burden. In addition, because the hollow structure is processed so that an overhang area is not generated when generating the hollow structure, a support is not needed therein, thereby making post-processing easy.

公开(公告)号：US20220232083A1

公开(公告)日：2022-07-21

申请号：US17609918

申请日：2019-11-20

Applicant: Korea Electronics Technology Institute

Inventor： Seong Yun KIM ,  Seung Myeong JEONG ,  Ji Ho LEE

IPC: H04L67/145 ,  H04L61/256 ,  H04L61/2553 ,  H04L67/12

Abstract: Provided are an IoT device and an IoT communication method. The IoT device may: be connected to a server via NAT; execute a first session for service connection; and execute a second session for calculating a particular keep-alive value corresponding to a period in which an IP address mapped by the NAT expires. The present invention can minimize transmission of a keep-alive value of an IoT device, enables an IoT device to share a particular keep-alive value with other IoT devices, and thus can minimize a network load which may be caused by a keep-alive value of an IoT communication device.