公开(公告)号：US10911136B2

公开(公告)日：2021-02-02

申请号：US16203394

申请日：2018-11-28

Applicant: Electronics and Telecommunications Research Institute ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Byung Jang Jeong ,  Woo Jin Byun ,  Ji-Hoon Yun ,  Jae-Han Lim ,  Wisnu Murti

IPC: H04B7/22 ,  H04B7/0456 ,  H04L1/00 ,  H04B1/00 ,  H04B7/08

Abstract: Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.

公开(公告)号：US20200277681A1

公开(公告)日：2020-09-03

申请号：US16617559

申请日：2018-11-23

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Joonho LEE ,  Sangchul SHIM ,  Byoungchul HWANG ,  Taeun HONG ,  Sangin LEE

IPC: C21D9/00 ,  C21D8/06 ,  C21D6/00 ,  C22C38/12 ,  C22C38/04 ,  C22C38/02

Abstract: A steel bar having yield strength of 700 MPa class, excellent yield ratio, and excellent uniform elongation property is provided. The steel bar includes bainite and ferrite included in a center of the steel bar and bainite accounts for 20 to 80% by volume.

公开(公告)号：US20200162712A1

公开(公告)日：2020-05-21

申请号：US16515175

申请日：2019-07-18

Applicant: Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Ji Hoon YUN

IPC: H04N13/111 ,  H04N13/264 ,  H04N13/279 ,  H04N13/156 ,  H04N13/194

Abstract: Provided is a method for creating a virtual reality content, storing the virtual reality content in a transmission buffer, and after that, managing the transmission buffer. A server creates the virtual reality content based on user's motion information, stores the virtual reality content in the transmission buffer and is allowed to modify the virtual reality content stored in the transmission buffer based on subsequently received user's motion information, so that the most recent user's motion information can be appropriately reflected in the virtual reality content. It is possible to provide a more immersive virtual reality service.

公开(公告)号：US20200083814A1

公开(公告)日：2020-03-12

申请号：US16469692

申请日：2017-07-05

Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Se Wan CHOI

IPC: H02M3/335 ,  H02J7/02 ,  H02M7/06 ,  H02M1/42 ,  H02M1/14 ,  H02M1/44 ,  B60L53/22

Abstract: According to a single-stage interleaved software switching converter, power factor is controlled and battery charging and current are integrally controlled on the basis of a PFC circuit of a single-stage interleaving type so that efficiency of a charging device is enhanced and the cost is reduced. Further, it is possible to remove harmful electromagnetic radiation; enhance power density and durability by using a film-type capacitor instead of the conventional electrolytic capacitor; reduce switching loss by soft switching operation and to reduce the volume of a filter unit; design magnetizing current to be small by removing a low-frequency component of a transformer and to reduce the volume; and perform high-power charging according to the number of windings of the transformer.

公开(公告)号：US20240258799A1

公开(公告)日：2024-08-01

申请号：US18220938

申请日：2023-07-12

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： In-Yong YEO ,  Youn-Sik LEE ,  Sang-Jin KIM ,  Se-Wan CHOI ,  Jae-Hoon KIM ,  Hui-Gyoung SONG

IPC: H02J7/00

CPC classification number: H02J7/0013 ,  H02J7/007 ,  H02J2207/20

Abstract: A power conversion apparatus capable of simultaneously discharging swap batteries even while reducing the number of power circuits includes a secondary converter configured to convert alternating current (AC) power into direct current (DC) power, a main battery connected to the secondary converter to receive the DC power, a replaceable swap battery block connected to the secondary converter configured for simultaneous discharge with the main battery, a switching circuit configured to turn on or off electrical connection between the replaceable swap battery block and the secondary converter, and a bypass circuit configured to turn on or off electrical connection between the swap battery block and the main battery.

公开(公告)号：US20240221299A1

公开(公告)日：2024-07-04

申请号：US18161038

申请日：2023-01-28

Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ho KIM ,  Jung Seok PARK

IPC: G06T17/00 ,  G06T7/50 ,  G06T7/70 ,  G06T11/00

CPC classification number: G06T17/00 ,  G06T7/50 ,  G06T7/70 ,  G06T11/003

Abstract: Provided are a system and a method for generating a high-resolution 3D model. According to an embodiment, a high-resolution 3D image is generated by correcting the following losses: symmetry loss that includes image symmetry loss and vertex symmetry loss between a 3D refined image and a symmetry image symmetrical to the 3D refined image with symmetry reliability degrees of a training device; displacement loss between vertexes of the 3D model image and vertexes of the 3D refined image refined on the basis of vertex coordinate information of the training device; silhouette loss through silhouette comparison between the original image and the 3D model image resulting from conversion into a derived view point of a spherical coordinate system; and edge loss and line loss between the original image and the 3D refined image.

公开(公告)号：US11945276B2

公开(公告)日：2024-04-02

申请号：US17891552

申请日：2022-08-19

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Youngil Sohn ,  Min Jun Kim ,  Sang Woo Hwang ,  Sehyun Chang ,  Jun Ho Seong ,  Yong Hwan Jeong ,  Seong Jin Yim

IPC: B60G17/0165 ,  B60G17/018 ,  B60G17/019

CPC classification number: B60G17/0165 ,  B60G17/0182 ,  B60G17/019 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2401/14 ,  B60G2600/182 ,  B60G2600/70 ,  B60G2800/70 ,  B60G2800/914

Abstract: The present disclosure discloses a preview vehicle height control system and a method of controlling the same. The system includes a monitoring device configured to detect the road surface condition of a driving path of a vehicle, an active suspension configured to adjust a vehicle height, a memory configured to store a plurality of data maps distinguished based on a type of bump, each data map having a vehicle dynamic characteristic as an input and a tuning factor as an output, and a controller configured to derive the tuning factor based on a data map, among the plurality of data maps of the memory, corresponding to the bump detected by the monitoring device, derive a target vehicle height in a form of a Gaussian distribution by substituting the tuning factor, and control the active suspension to follow the derived target vehicle height.

公开(公告)号：US20240051431A1

公开(公告)日：2024-02-15

申请号：US18054742

申请日：2022-11-11

Applicant: Foundation for Research and Business, Seoul National University of Science and Technology ,  Hyundai Motor Company ,  Kia Corporation

Inventor： In Yong Yeo ,  Youn Sik Lee ,  Se Wan Choi

IPC: B60L58/22 ,  B60L50/60 ,  B60L53/20 ,  B60L53/80 ,  H02J7/00 ,  H02J7/34 ,  H02M3/156

CPC classification number: B60L58/22 ,  B60L50/60 ,  B60L53/20 ,  B60L53/80 ,  H02J7/0063 ,  H02J7/0016 ,  H02J7/342 ,  H02M3/156 ,  B60L2210/12 ,  H02J2207/20 ,  H02M1/4208

Abstract: A power conversion system includes: a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle; an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and a power converter connected to auxiliary battery, the power converter comprising a bypass circuit and a buck converter. The buck converter includes a buck switch, and is configured to convert a voltage of the auxiliary battery into a voltage for recharging the main battery in accordance with an ON/OFF switching operation of the buck switch.

公开(公告)号：US20230331057A1

公开(公告)日：2023-10-19

申请号：US17891552

申请日：2022-08-19

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Foundation for Research and Business, Seoul National University of Science and Technology

Inventor： Youngil SOHN ,  Min Jun KIM ,  Sang Woo HWANG ,  Sehyun CHANG ,  Jun Ho SEONG ,  Yong Hwan JEONG ,  Seong Jin YIM

IPC: B60G17/0165 ,  B60G17/019 ,  B60G17/018

CPC classification number: B60G17/0165 ,  B60G17/019 ,  B60G17/0182 ,  B60G2400/252 ,  B60G2401/14 ,  B60G2600/182 ,  B60G2600/70 ,  B60G2800/70 ,  B60G2800/914 ,  B60G2400/204

Abstract: The present disclosure discloses a preview vehicle height control system and a method of controlling the same. The system includes a monitoring device configured to detect the road surface condition of a driving path of a vehicle, an active suspension configured to adjust a vehicle height, a memory configured to store a plurality of data maps distinguished based on a type of bump, each data map having a vehicle dynamic characteristic as an input and a tuning factor as an output, and a controller configured to derive the tuning factor based on a data map, among the plurality of data maps of the memory, corresponding to the bump detected by the monitoring device, derive a target vehicle height in a form of a Gaussian distribution by substituting the tuning factor, and control the active suspension to follow the derived target vehicle height.

公开(公告)号：US20230326523A1

公开(公告)日：2023-10-12

申请号：US18188332

申请日：2023-03-22

Applicant: SK hynix Inc. ,  Foundation for Research and Business, Seoul National University of Science and Technology ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS

Inventor： Tae Jung HA ,  Soo Gil KIM ,  Jeong Hwan SONG ,  Byung Joon CHOI ,  Ha Young LEE

IPC: G11C11/16 ,  G11C13/00

CPC classification number: G11C13/003 ,  G11C11/1659 ,  G11C2213/72

Abstract: Operating a selector device that controls access of a signal to a memory element may comprise applying a main operating voltage pulse and a refresh voltage pulse to the selector device. The refresh voltage pulse and main operating voltage pulse have opposite polarities. A magnitude of the main operating voltage pulse is greater than or equal to a threshold voltage for turning on the selector device, and a maximum magnitude of the refresh voltage pulse is less than the threshold voltage. The refresh voltage pulse reduces a difference between the threshold voltage and a turn-off voltage of the selector device, and may be applied immediately before or immediately after the main operating voltage pulse. An electronic circuit may include the selector device and a driving circuit for apply the pulses. A nonvolatile memory may include the driving circuit and a plurality of nonvolatile memory elements each including a selector device.