公开(公告)号：US20240132105A1

公开(公告)日：2024-04-25

申请号：US18371198

申请日：2023-09-20

Applicant: Korea Electronics Technology Institute

Inventor： Dae Kyo SHIN ,  Ki Taeg LIM ,  Pu Sik PARK ,  Han Gyun JUNG ,  Sang Hun YOON ,  Soo Hyun JANG ,  Seong Hyun JANG ,  Jun Hyek JANG ,  Byoung Man AN

IPC: B60W60/00

CPC classification number: B60W60/0015 ,  B60W2554/402 ,  B60W2556/65

Abstract: There is provided a cooperative driving control method based on a vehicle security status. The cooperative driving method according to an embodiment includes: identifying a security status of a cooperative driving target vehicle; determining a cooperative driving strategy according to the identified security status; and controlling driving according to the determined cooperative driving strategy. Accordingly, cooperative driving may be performed or excluded based on a security status of a target vehicle, so that an accident may be prevented from being caused by cooperative driving with a problematic vehicle, and safety of a driver and an occupant may be guaranteed.

公开(公告)号：US20240107098A1

公开(公告)日：2024-03-28

申请号：US18529607

申请日：2023-12-05

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

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

IPC: H04N21/266 ,  G06T15/00 ,  G06T19/00 ,  H04N21/234 ,  H04N21/258 ,  H04N21/442 ,  H04N21/81

CPC classification number: H04N21/266 ,  G06T15/00 ,  G06T19/006 ,  H04N21/234 ,  H04N21/25841 ,  H04N21/44209 ,  H04N21/8146

Abstract: Proposed are a mediation server operation method for an XR streaming service and XR streaming system supporting same, the mediation server operation method comprising the steps of: if a mediation server receives an XR content playback request from a connected user device, searching for an idle split rendering server; allocating the found idle split rendering server to the user device; receiving image data and sensor data from the user device; generating a rotation matrix on the basis of the received image data and sensor data; and transmitting the rotation matrix to the allocated split rendering server.

公开(公告)号：US20240098263A1

公开(公告)日：2024-03-21

申请号：US18058634

申请日：2022-11-23

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Yong Hwan Kim ,  Yura Kim ,  Jong-geun Park ,  Hyun Ho Kim

IPC: H04N19/119 ,  H04N19/136 ,  H04N19/167 ,  H04N19/85

CPC classification number: H04N19/119 ,  H04N19/136 ,  H04N19/167 ,  H04N19/85

Abstract: A device and method for performing fast grid-based refining segmentation (FGRS) for video-based point cloud compression (V-PCC) is proposed. The method may include dividing a space of a three-dimensional (3D) point cloud into multiple grids to derive multiple voxels, searching for filled voxels including one or more points, searching for surrounding voxels which are filled voxels within a certain radius from each of the filled voxels, and searching for edge voxels which are present at a segment edge among all the filled voxels. The method may also include calculating smooth scores for surrounding voxels of each edge voxel and calculating a smooth score sum which is a smooth score for the edge voxel on the basis of the smooth scores of the surrounding voxels of the edge voxel, and updating a projection plane index (PPI) for each individual point in the edge voxel using the calculated smooth score sum.

公开(公告)号：US11918096B2

公开(公告)日：2024-03-05

申请号：US17169991

申请日：2021-02-08

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Soon Hyung Kwon

IPC: A45D31/00 ,  G02F1/1335 ,  G02F1/167 ,  G09F19/20

CPC classification number: A45D31/00 ,  G02F1/133557 ,  G02F1/167 ,  G09F19/20

Abstract: Provided are a color change module using a reflective display, and an independent type color change control apparatus providing an electrical signal for changing a color of the color change module. The color change module can include a module base, the reflective display, a first external electrode and a second external electrode. The module base has a shape corresponding to an object for attachment. The reflective display is provided on an upper surface of the module base, and displays information in a manner wherein light coming from outside is reflected. The first external electrode and the second external electrode are provided to be connected to the reflective display and to be exposed to outside for receiving the information to be displayed on the reflective display from the independent type color change control apparatus.

公开(公告)号：US11907578B2

公开(公告)日：2024-02-20

申请号：US17587239

申请日：2022-01-28

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Young Kyu Kim ,  Byung Soo Kim ,  Young Jong Jang

IPC: G06F3/06 ,  G06F9/30

CPC classification number: G06F3/0659 ,  G06F3/0626 ,  G06F3/0673 ,  G06F9/30043

Abstract: The present disclosure relates to a method for classifying instructions according to the number of operands required for processing-in-memory instruction processing, and a computing device applying same. Efficient instruction processing in a processing-in-memory may include identifying the number of operands required when processing an instruction queuing to be processed, interpreting the instruction queuing to be processed and processing an instruction corresponding to the identified number of required operands. When the number of required operands is 0, the instruction interpretation may interpret the instruction queuing to be processed as a WRITE instruction, and the instruction processing may execute memory writing. When the number of required operands is not 0, the instruction processing may execute memory reading in an internal memory of the processing-in-memory by the same number of times as the number of operands required in the instruction interpreted in the instruction interpretation.

公开(公告)号：US20240028857A1

公开(公告)日：2024-01-25

申请号：US17623221

申请日：2021-12-07

Applicant: Korea Electronics Technology Institute

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

IPC: G06K19/06 ,  G06K19/16

CPC classification number: G06K19/06037 ,  G06K19/16 ,  G06K2207/1015

Abstract: Provided is an uncopyable hologram QR code, According to an embodiment of the present disclosure, a 3D code generation method divides a 2D code having specific information recorded thereon into a plurality of sub 2D codes, and generatES a 3D code by coupling at least one of the divided sub 2D codes at a different depth. Accordingly, a QR code is recorded on a hologram recording medium as a hologram, and is displayed and scanned, so that it is impossible to easily duplicate the QR code unlike an existing 2D QR code.

公开(公告)号：US11852847B2

公开(公告)日：2023-12-26

申请号：US16969666

申请日：2018-02-13

Applicant: Korea Electronics Technology Institute

Inventor： Young Min Kim ,  Ji Soo Hong ,  Hoon Jong Kang ,  Sung Hee Hong ,  Choon Sung Shin

IPC: G02B26/08 ,  G02B30/33 ,  G02B27/30

CPC classification number: G02B30/33 ,  G02B26/0816 ,  G02B27/30

Abstract: Provided is a Maxwellian view display which uses a space-time multiplexing scheme and widens a field of view, thereby having a degree of freedom within a set area instead of a fixed position while maintaining the advantage of the existing Maxwellian view, in which a clear image can be observed irrespective of the difference in individual ability for focal point adjustment since the focal point does not need to be adjusted. According to an embodiment of the present invention, a display includes: a light source unit for changing the position of a point light source according to time; a first lens for converting the light emitted from the light source unit to be parallel; an image generating unit for generating an image using the parallel light incident from the first lens; and a second lens for focusing the image generated by the image generating unit.

公开(公告)号：US20230387725A1

公开(公告)日：2023-11-30

申请号：US18058688

申请日：2022-11-23

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Yong Ju Park ,  Yong Seok Lim ,  Yong Seong Kim ,  Hae Yong Jung ,  Hye Jung Kim

IPC: H02J50/60 ,  H02J50/12 ,  G01V8/18

CPC classification number: H02J50/60 ,  H02J50/12 ,  G01V8/18

Abstract: A system for foreign object detection (FOD) in wireless power transfer is proposed. The system may include a balanced coil which is disposed between a transmitter coil and a receiver coil and which includes a Maxwell bridge circuit. The system may also include a temperature sensor configured to measure a temperature of the transmitter coil. The system may further include a processor configured to determine whether an FO is present between the transmitter coil and the receiver coil on the basis of voltage values detected at both ends of the bridge circuit. The FOD system can recognize the FO by finding a maximum resonant frequency at which a metal reacts using resonant frequency sweeping in a bridge circuit.

公开(公告)号：US20230367261A1

公开(公告)日：2023-11-16

申请号：US18030093

申请日：2020-12-02

Applicant: Korea Electronics Technology Institute

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

IPC: G03H1/04

CPC classification number: G03H1/0476 ,  G03H2223/53

Abstract: Provided are a holographic printing device and method using multiple optical heads. The holographic printing device according to an embodiment of the present invention comprises: a fringe pattern generation unit which generates a holographic fringe pattern, and segments the generated fringe pattern into hogels; a multiplexing unit which groups the hogels, segmented by the fringe pattern generation unit, according to area; and a plurality of optical heads which respectively receive the grouped hogels and print the respective hogels in the corresponding areas of a holographic medium. Accordingly, several hogels can be printed on the holographic medium at a time using the multiple optical heads, thus reducing holographic printing time so that even large screen holograms can be printed at high speed.

公开(公告)号：US11818240B2

公开(公告)日：2023-11-14

申请号：US17547378

申请日：2021-12-10

Applicant: Korea Electronics Technology Institute ,  Seoul National University R&DB Foundation

Inventor： Ha Ram Ju ,  Sung Ho Lee ,  Deog Kyoon Jeong

IPC: H04L7/02 ,  H04L7/00 ,  H03L7/091

CPC classification number: H04L7/0016 ,  H03L7/091 ,  H04L7/0054 ,  H04L7/0079

Abstract: There is provided a clock and data recovery circuit for a high-speed PAM-4 receiver through statistical learning. A clock and data recovery device according to an embodiment includes: an input unit through which data is inputted; a clock input unit through which a clock is inputted; a sampling unit configured to sample the inputted data by using the inputted clock; a controller configured to combine results of sampling at a plurality of sampling points, to determine a state of the clock based on the combined results, and to generate a control value for controlling the clock; and an adjustment unit configured to adjust the clock applied to the sampling unit, based on the control value generated by the controller. Accordingly, a hardware structure is simplified and energy efficiency is enhanced compared to an exiting oversampling clock and data recovery circuit for a PAM-4 receiver.