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公开(公告)号：US10910864B2
公开(公告)日：2021-02-02
申请号：US15909302
申请日：2018-03-01
Inventor： Sang-Won Kim , Jung Ick Moon , Seong-Min Kim , In Kui Cho , Je Hoon Yun , Dong Won Jang
Abstract: Disclosed is a wireless power transmitting device and method, the wireless power transmitting device including, in response to detection of a power receiver within a predetermined separation distance from a charging pad, a controller configured to generate a magnetic field through a transmission coil with a multilayer structure in which a plurality of coil layers of different sizes are stacked, and a power transmitter configured to wirelessly transmit, to a reception coil of the power receiver, a power signal generated using magnetic fields generated by the plurality of coil layers.
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公开(公告)号：US11916309B2
公开(公告)日：2024-02-27
申请号：US17122218
申请日：2020-12-15
Inventor： Jaewoo Lee , In Kui Cho , Sang-Won Kim , Seong-Min Kim , Ho Jin Lee , Jang Yeol Kim , Jung Ick Moon , Woo Cheon Park , Je Hoon Yun , Hyunjoon Lee , Dong Won Jang
CPC classification number: H01Q7/005 , G01R33/3692 , H04B5/0025 , H01Q1/243
Abstract: An apparatus and method for transmitting and receiving magnetic field signals in a magnetic field communication system are provided. The apparatus includes a controller configured to generate a communication signal, matching units that are configured to receive the communication signal and that respectively correspond to different matching frequencies, and loop antennas that are connected to the matching units, respectively, and that are configured to convert communication signals according to the different matching frequencies into magnetic transmission signals in the form of magnetic field energy and to transmit the magnetic transmission signals.
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公开(公告)号：US11750246B2
公开(公告)日：2023-09-05
申请号：US17553466
申请日：2021-12-16
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Korea Advanced Institute of Science and Technology
Inventor： Jang Yeol Kim , Jaewoo Lee , Hyunjoon Lee , In Kui Cho , Sang-Won Kim , Seong-Min Kim , Jung Ick Moon , Je Hoon Yun , Dong Won Jang , Seunghun Ryu , Seungyoung Ahn
IPC: H04B5/00 , H03K9/00 , H03D3/24 , G01R33/00 , G01R33/028
CPC classification number: H04B5/0075
Abstract: A magnetic field communication method and apparatus using a giant magnetoimpedance (GMI) magnetometer are disclosed. The magnetic field communication apparatus includes a GMI magnetometer configured to detect a first communication signal based on a received magnetic field signal, a first signal extractor configured to extract a second communication signal comprising a message signal from the first communication signal, a second signal extractor configured to extract a third communication signal by removing a magnetization frequency signal from the second communication signal, and a third signal extractor configured to extract the message signal by removing a carrier wave frequency signal from the third communication signal.
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公开(公告)号：US11509170B2
公开(公告)日：2022-11-22
申请号：US16629010
申请日：2018-07-05
Inventor： In Kui Cho , Sang-Won Kim , Seong-Min Kim , Jung Ick Moon , Je Hoon Yun , Ho Jin Lee , Dong Won Jang
Abstract: A wireless power receiving apparatus, according to an example embodiment, may include a receiving coil in which a first wire including a copper core and a second wire not including a copper core are wound around a same axis. The second wire may be located at a pitch of the first wire, and a diameter of the second wire may correspond to the pitch of the first wire.
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公开(公告)号：US10727698B2
公开(公告)日：2020-07-28
申请号：US15911264
申请日：2018-03-05
Inventor： Jung Ick Moon , Sang-Won Kim , Seong-Min Kim , In Kui Cho , Je Hoon Yun , Dong Won Jang
Abstract: Provided is a wireless power reception apparatus for wirelessly receiving power from a wireless power transmission apparatus, the wireless power reception apparatus including a reception coil configured to receive power by a harmonic with an n*f0 frequency that is generated through electromagnetic induction with the wireless power transmission apparatus; a matching circuit configured to transfer the harmonic with the n*f0 frequency to a harmonic generator; the harmonic generator configured to generate at least one harmonic with an m*n*f0 frequency by applying a multiplication factor m to the transferred harmonic with the n*f0 frequency; a filter configured to filter the harmonic with the m*n*f0 frequency; and a harmonic transmission coil configured to transmit the filtered harmonic with the m*n*f0 frequency to the wireless power transmission apparatus, and to attenuate the harmonic with the n*f0 frequency that is generated from the wireless power transmission apparatus.
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Patent Agency Ranking
公开(公告)号：US10693326B2
公开(公告)日：2020-06-23
申请号：US15986429
申请日：2018-05-22
Inventor： Seong-Min Kim , Sang-Won Kim , Jung Ick Moon , In Kui Cho , Je Hoon Yun , Dong Won Jang
IPC: H02J50/12
Abstract: Disclosed is a wireless power receiving apparatus capable of controlling an effective load resistance. The wireless power receiving apparatus may include a rectifier configured to generate a rectified voltage based on a magnetic field generated in a wireless power transmitting apparatus, and a controller configured to transmit, to the rectifier, a control signal for controlling a rectified phase of the rectifier to adjust an effective load resistance of the wireless power receiving apparatus.
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公开(公告)号：US12260565B2
公开(公告)日：2025-03-25
申请号：US17698632
申请日：2022-03-18
Inventor： Gwangzeen Ko , Jung Ick Moon , Sang-Won Kim , Seong-Min Kim , In Kui Cho , Woo Jin Byun , Je Hoon Yun
Abstract: An image processing-based foreign substance detection method in a wireless charging system and a device performing the method are disclosed. A method for detecting a foreign substance includes an operation of acquiring an image of a charging area of a wireless charging system, an operation of detecting, based on an RGB value of a frame of the image, a foreign substance in the charging area, an operation of discriminating a type of the foreign substance, and an operation of performing power control of the wireless charging system according to the type of the foreign substance.
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8.发明授权公开(公告)号：US11699549B2
公开(公告)日：2023-07-11
申请号：US17189788
申请日：2021-03-02
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Korea Advanced Institute of Science and Technology
Inventor： Jang Yeol Kim , In Kui Cho , Hyunjoon Lee , Sang-Won Kim , Seong-Min Kim , Jung Ick Moon , Woo Cheon Park , Je Hoon Yun , Jaewoo Lee , Ho Jin Lee , Dong Won Jang , Kibeom Kim , Seungyoung Ahn
CPC classification number: H01F27/325 , G01R33/02 , H01F27/24 , H01F27/2804 , H01F41/041
Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.
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公开(公告)号：US11444366B2
公开(公告)日：2022-09-13
申请号：US17105755
申请日：2020-11-27
Inventor： Jung Ick Moon , Je Hoon Yun , In Kui Cho , Ho Jin Lee , Sang-Won Kim , Seong-Min Kim , Jang Yeol Kim , Jaewoo Lee , Hyunjoon Lee , Dong Won Jang
Abstract: Disclosed is a resonator for expanding a transfer distance. A conical resonator includes a metal layer configured to operate according to a resonant frequency, and a dielectric layer coupled to the top or bottom of the metal layer to space the metal layer apart from another metal layer without overlap, wherein the metal layer and the dielectric layer have a Swiss-roll structure, and include an input face to which power is supplied on the bottom and an open face on the top.
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公开(公告)号：US11199595B2
公开(公告)日：2021-12-14
申请号：US17071530
申请日：2020-10-15
Inventor： Hyunjoon Lee , In Kui Cho , Jang Yeol Kim , Jaewoo Lee , Ho Jin Lee , Sang-Won Kim , Seong-Min Kim , Jung Ick Moon , Woo Cheon Park , Je Hoon Yun , Dong Won Jang
IPC: G01R33/26
Abstract: The atomic magnetometer includes a light source device configured to output a linearly polarized irradiation light and a circularly polarized pump light, a first vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a first transmitted light, a second vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a second transmitted light, a magnetic field application device configured to apply a bias magnetic field in opposite directions to the first vapor cell and the second vapor cell, and a measuring device configured to obtain the magnetic field signal based on a differentiation of a first polarization rotation signal corresponding to a polarization state of the first transmitted light and a second polarization rotation signal corresponding to a polarization state of the second transmitted light.
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