公开(公告)号：US20180100901A1

公开(公告)日：2018-04-12

申请号：US15657367

申请日：2017-07-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung-Min CHOI ,  Jae-Chan JEONG ,  Hyo-Bong HONG ,  Sung-Woong SHIN ,  Jae-Il CHO

IPC: G01R33/00 ,  G01R33/12

CPC classification number: G01R33/0023 ,  G01R33/0029 ,  G01R33/12 ,  G01R33/32 ,  G01R33/34053 ,  G06F11/1443

Abstract: Disclosed herein are a signal transmission/reception method for signal analysis in FMMD technology and an apparatus using the method. A signal transmission apparatus includes a signal generation unit for generating two sine wave signals having different frequencies in consideration of a voltage of an excitation coil included in a magnetic particle measurement sensor, a signal addition unit for generating an input signal for producing a magnetic field by electronically adding the two sine wave signals, a differential signal generation unit for generating a differential signal for the input signal to minimize transmission noise, and a signal transmission unit for amplifying voltages of the input signal and the differential signal and transmitting the amplified input signal and differential signal to the excitation coil so as to produce a magnetic field in the excitation coil and apply the magnetic field to a measurement target sample.

公开(公告)号：US20200182952A1

公开(公告)日：2020-06-11

申请号：US16572254

申请日：2019-09-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyo-Bong HONG ,  Jae-Chan JEONG ,  Seung-Min CHOI ,  Jin-Sun KIM

IPC: G01R33/12 ,  G01R33/385

Abstract: Disclosed herein are a magnetic-field-generating coil system, an imaging system having the magnetic-field-generating coil system, and a method for operating the imaging system. The method for operating an imaging system includes generating multiple Linear Gradient Fields (LGFs) in respective axial directions by controlling coil currents, and acquiring MRI information or Magnetic Particle Imaging (MPI) information about an object while moving the multiple LGFs by varying the coil currents.

公开(公告)号：US20190162801A1

公开(公告)日：2019-05-30

申请号：US16205044

申请日：2018-11-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyo-Bong HONG ,  Jae-Chan JEONG ,  Seung-Min CHOI ,  Chang-Beom KIM

IPC: G01R33/36 ,  G01R33/381 ,  G01R33/48

Abstract: Disclosed herein are a method for modifying a magnetic field using magnetic nanoparticles and an apparatus therefor. The method for modifying a magnetic field includes applying current to a single solenoid coil or to two parallel solenoid coils, measuring a strength of a magnetic field generated by the current at a preset target location using a measurement sensor, and controlling the strength of the magnetic field based on a concentration of a magnetic nanoparticle sample mounted in the single solenoid coil or the two solenoid coils so that the strength of the magnetic field matches a preset target value.

公开(公告)号：US20180203950A1

公开(公告)日：2018-07-19

申请号：US15868863

申请日：2018-01-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung-Min CHOI ,  Jae-Chan JEONG ,  Hyo-Bong HONG

IPC: G06F17/50 ,  G01R33/10

CPC classification number: G06F17/50 ,  G01R33/0206 ,  G01R33/028 ,  G01R33/10 ,  G06F17/5009 ,  G06F2217/02 ,  G06F2217/06 ,  H01F41/04

Abstract: Disclosed herein are a method for providing a parameter for coil design and an apparatus for the same. The method includes receiving a magnetic field parameter value for an arbitrary coil from a user; determining whether there is a constraint on each of an electrical parameter group and a geometric parameter group; when it is determined that there is a constraint on any one of the two groups, setting a parameter range for a second parameter group on which there is no constraint based on a fixed parameter set of a first parameter group on which there is a constraint; and selecting a final parameter set of the second parameter group for satisfying the magnetic field parameter value within the parameter range and outputting parameter values of the fixed parameter set and the final parameter set to the user.

公开(公告)号：US20180149655A1

公开(公告)日：2018-05-31

申请号：US15807454

申请日：2017-11-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyo-Bong HONG ,  Seung-Min CHOI ,  Jae-Chan JEONG

IPC: G01N33/574 ,  G01N1/40 ,  G01N33/68 ,  G01N33/543

CPC classification number: G01N33/57484 ,  B01J2219/00299 ,  B01L3/505 ,  G01N1/405 ,  G01N1/4077 ,  G01N33/543 ,  G01N33/54326 ,  G01N33/54346 ,  G01N33/6893 ,  G01N2800/26

Abstract: This invention relates to a kit for detecting a target material and a method of detecting a target material using the same.

公开(公告)号：US20180011070A1

公开(公告)日：2018-01-11

申请号：US15599386

申请日：2017-05-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyo-Bong HONG ,  Jae-Chan JEONG ,  Seung-Min CHOI ,  Sung-Woong SHIN ,  Jae-Il CHO ,  Nam-Shik PARK

IPC: G01N33/18 ,  H01F7/06 ,  C02F1/28 ,  H01F27/28 ,  G01N27/02 ,  G01R23/16 ,  C02F101/20

CPC classification number: G01N33/1813 ,  C02F1/281 ,  C02F1/488 ,  C02F2101/20 ,  C02F2209/003 ,  G01N27/023 ,  G01N27/026 ,  G01R23/16 ,  H01F7/06 ,  H01F7/20 ,  H01F27/2823

Abstract: Disclosed herein are a method for analyzing heavy metal removal efficiency using phase difference analysis and an apparatus using the method. The method for analyzing heavy metal removal efficiency using phase difference analysis includes applying a magnetic field to a magnetite onto which a heavy metal is adsorbed, based on a first solenoid coil and a second solenoid coil that have an identical winding direction, applying a high-frequency signal to the magnetite, based on a third solenoid coil having a winding direction that differs from that of the first solenoid coil and the second solenoid coil, detecting a high-frequency signal transformed by the magnetite, and calculating a phase difference between a previously detected default high-frequency signal and the transformed high-frequency signal, and analyzing an efficiency of heavy metal removal by the magnetite by measuring a concentration of the heavy metal based on the phase difference.

公开(公告)号：US20150003736A1

公开(公告)日：2015-01-01

申请号：US14158925

申请日：2014-01-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Min CHOI ,  Jae-Chan JEONG ,  JAE IL CHO ,  Dae Hwan HWANG

IPC: G06K9/62 ,  G06T5/00

CPC classification number: G06K9/6217 ,  G06T7/521 ,  G06T7/593 ,  G06T2207/30204

Abstract: An apparatus includes a noise removal block for removing image noise mixed with an input image, a Modified Census Transform (MCT) block for transforming the input image from which the image noise has been removed into a current MCT coefficient, a candidate pattern extraction block for calculating a Sum of Hamming Distance (SHD) value between a current pattern window of the transformed current MCT coefficient and a reference pattern window of a previously registered template image by performing SHD calculation on the two pattern windows and extracting a candidate pattern, and a pattern detection block for scaling down the input image in a predetermined ratio when all pixels of the current scale are processed and detecting a candidate pattern having a minimum SHD value, of stored candidate patterns, as a representative pattern.

Abstract translation: 一种装置，包括用于去除与输入图像混合的图像噪声的噪声去除块，用于将从其中去除图像噪声的输入图像变换为当前MCT系数的修改人口普查变换（MCT）块;候选模式提取块， 通过在两个图案窗口上执行SHD计算并提取候选图案，计算经变换的当前MCT系数的当前图案窗口和先前登记的模板图像的参考图案窗口之间的汉明距离（SHD）值之和，并提取图案 检测块，用于当处理当前刻度的所有像素并且检测存储的候选图案的具有最小SHD值的候选图案时，以预定比例缩小输入图像作为代表图案。

公开(公告)号：US20200217910A1

公开(公告)日：2020-07-09

申请号：US16734217

申请日：2020-01-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung-Min CHOI ,  Jae-Chan JEONG ,  Hyo-Bong HONG

IPC: G01R33/34 ,  G01R33/00 ,  G01R33/12

Abstract: Disclosed herein are a continuous scanning method using signal shielding and an apparatus for the continuous scanning method. The continuous scanning method includes producing a magnetic field on consecutively input samples by applying a signal to an excitation solenoid coil, blocking signal detection in a partial region so that only one harmonic peak is detected by a detection solenoid coil, which is a differential coil, using a magnetic field produced by at least one magnet, and sequentially detecting one harmonic peak in the samples based on the detection solenoid coil, and performing scanning of nanomagnetic particles on respective samples based on a signal for the detected harmonic peak.

公开(公告)号：US20140219549A1

公开(公告)日：2014-08-07

申请号：US14021956

申请日：2013-09-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Min CHOI ,  Dae Hwan HWANG ,  Eul Gyoon LIM ,  HoChul SHIN ,  Jae-Chan JEONG ,  Jae IL CHO ,  Kwang Ho YANG ,  Jiho CHANG

IPC: G06T7/00

CPC classification number: G06T7/593

Abstract: An active stereo matching method includes extracting a pattern from a stereo image, generating a depth map through a stereo matching using the extracted pattern, calculating an aggregated cost for a corresponding disparity using a window kernel generated using the extracted pattern and a cost volume generated for the stereo image, and generating a disparity map using the depth map and the aggregated cost.

Abstract translation: 主动立体匹配方法包括从立体图像提取图案，通过使用提取的图案的立体匹配产生深度图，使用使用提取的图案生成的窗口内核计算相应视差的聚合成本，以及为 立体图像，并使用深度图和聚合成本生成视差图。