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公开(公告)号：US20170271757A1
公开(公告)日：2017-09-21
申请号：US15614816
申请日：2017-06-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Noboru Kato , Makoto Yasutake
Abstract: An antenna device includes an RFIC element, a power supply coil connected to the RFIC element, and a first coil conductor including a first large-diameter loop shaped conductor and a first small-diameter loop shaped conductor. The first coil conductor functions as a booster antenna and forms an antenna resonance circuit. The power supply coil is accommodated in a recess surrounded by the first small-diameter loop shaped conductor. The power supply coil is disposed in a manner that its winding direction is aligned with the winding axis direction of the first small-diameter loop shaped conductor and its outer diameter is inside a coil opening of the first small-diameter loop shaped conductor in a planar view. The power supply coil is coupled to the first small-diameter loop shaped conductor through a magnetic field.
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公开(公告)号：US20220108144A1
公开(公告)日：2022-04-07
申请号：US17550709
申请日：2021-12-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kengo Matsumoto , Hiromi Murayama , Makoto Yasutake , Tsuyoshi Suesada
IPC: G06K19/077
Abstract: A wireless IC tag-attached metal medical instrument includes a metal medical instrument including a metal portion. The metal medical instrument is configured such that electric, magnetic, or electromagnetic field coupling is established between a resonant circuit and the metal portion when a wireless IC tag is fixed to the metal portion that includes the resonant circuit having an inductor with a spiral or helix shape that turns around a central axis more than one turn. In this configuration, the metal portion either emits a transmission signal with a frequency equal to a resonant frequency of an electromagnetic wave supplied from the resonant circuit or receives a reception signal having a frequency equal to the resonant frequency, and supplies the reception signal to the resonant circuit.
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公开(公告)号：US20220104918A1
公开(公告)日：2022-04-07
申请号：US17550844
申请日：2021-12-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kengo Matsumoto , Hiromi Murayama , Makoto Yasutake , Tsuyoshi Suesada
IPC: A61B90/98 , G06K19/077 , H01Q1/22
Abstract: A wireless IC tag-attached metal medical instrument is provide that includes a metal medical instrument with a metal portion having a recess. The metal medical instrument is configured such that electric field coupling, magnetic field coupling, or electromagnetic field coupling is established between a resonant circuit and the metal portion of the metal medical instrument. The metal portion is configured to emit a transmission signal or receive a reception signal when a wireless IC tag is fixed to the metal portion such that at least a part of the wireless IC tag is positioned closer to a bottom of the recess than an opening of the recess.
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公开(公告)号：US20190228283A1
公开(公告)日：2019-07-25
申请号：US16372682
申请日：2019-04-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuki Eshima , Makoto Yasutake , Noboru Kato
IPC: G06K19/077 , G06K19/07
Abstract: A UHF band RFID tag with stable communication characteristics when attached to a metal surface. The UHF band RFID tag includes a resin block having a first surface serving as an attaching surface to the metal surface and a second surface opposing the first surface, a substrate on a second surface side of the resin block, a RFIC element mounted on the substrate, and a loop electrode connected to the RFIC element. The loop electrode includes metal bodies provided in the resin block and extending in a direction intersecting the first and second surfaces, a flat plate electrode on a first surface side of the resin block and connecting first ends of the metal bodies, conductor patterns on the second surface side of the resin block and connecting the RFIC element and second ends of metal bodies.
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公开(公告)号：US09997000B2
公开(公告)日：2018-06-12
申请号：US15260433
申请日：2016-09-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Ikuhei Kimura , Makoto Yasutake
CPC classification number: G07C9/00309 , B60R25/245 , G06F21/35 , G07C9/00111 , G07C2009/00793 , G07C2209/62 , G07C2209/63 , G08C17/02 , G08C2201/61
Abstract: An electronic key actively executes wireless communication following a keyless entry communication and passively executes wireless communication following a RFID communication. A vehicle control device is mounted on a vehicle and actively executes wireless communication following each of the keyless entry communication and RFID communication. An ECU/BCM unlocks a door by communicating with the electronic key using the keyless entry communication and issues a password to the electronic key in relation to this action. When a door knob or handle is pulled, an RFID-IC acquires the password issued by the ECU/BCM from the electronic key using the RFID communication and unlocks the door by authenticating the acquired password.
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Patent Agency Ranking
公开(公告)号：US09859948B2
公开(公告)日：2018-01-02
申请号：US14788918
申请日：2015-07-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Makoto Yasutake , Atsuyuki Yuasa
CPC classification number: H04B1/69 , H04B1/02 , H04B1/707 , H04L27/20 , H04L27/2035 , H04L2027/0018 , H04L2027/0051 , H04L2027/0083
Abstract: A microprocessor includes a memory, an input/output port and a switch controller. Transmission data, a spread code and an inverted code are stored in the memory. The switch controller generates a spread spectrum signal by calling up either of the spread code or the inverted code in accordance with a bit of the transmission data. A switch connected to the input/output port is switched on and off based on the spread spectrum signal. In addition, an antenna is connected to the input/output port via a coupler. An oscillation circuit includes a reference oscillator and a BPF and inputs a harmonic of a reference signal to the coupler as a carrier wave.
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公开(公告)号：US10784929B2
公开(公告)日：2020-09-22
申请号：US16174340
申请日：2018-10-30
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Noboru Kato , Makoto Yasutake , Shinichiro Banba
IPC: H04B5/00 , G06K19/07 , G06K19/077 , H01Q7/00 , H01L23/31 , H01Q1/22 , H01L21/56 , H01L23/498 , H01L23/66
Abstract: A wireless IC device includes a resin member including first and second surfaces, a substrate including first and second principal surfaces, a coil antenna provided in the resin member, and an RFIC element mounted on the substrate and connected to the coil antenna. The substrate is embedded in the resin member so that the second principal surface is at a second surface side. The coil antenna is defined by first linear conductor patterns on the second surface, first metal posts extending between the first and second surfaces, second metal posts extending between the first and second surfaces, and second linear conductor patterns on the first surface. The RFIC element is disposed in the coil antenna.
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18.发明申请公开(公告)号：US20190196414A1
公开(公告)日：2019-06-27
申请号：US16290185
申请日：2019-03-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuki Eshima , Makoto Yasutake , Teppei Miura
CPC classification number: G04G21/04 , G04G17/08 , G06K7/10 , G06K7/10366 , G06K19/073 , G06K19/077 , G06K19/07773 , H01Q1/22 , H01Q7/00
Abstract: A watch with a built-in tag that includes a display displaying a time, a metal case having a through-hole in a side surface, a metal crown disposed to enable opening and closing of the through-hole, and a wireless communication device housed inside the case. The crown includes a head located outside the case and coming into contact with the case to close the through-hole, and a shank extending to the inside of the case through the through-hole with one end portion connected to the head and the other end portion located inside the case. When the head of the crown is pulled in a direction away from the case, the head of the crown becomes contactless with the case to enable a reader device located outside the case to read information of the wireless communication device through the crown.
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19.发明授权公开(公告)号：US10153810B2
公开(公告)日：2018-12-11
申请号：US15286601
申请日：2016-10-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Noboru Kato , Makoto Yasutake , Shinichiro Banba
IPC: H04B5/00 , G06K19/07 , G06K19/077 , H01Q7/00 , H01L21/56 , H01L23/31 , H01L23/498 , H01L23/66 , H01Q1/22
Abstract: A wireless IC device includes a resin member including first and second surfaces, a substrate including first and second principal surfaces, a coil antenna provided in the resin member, and an RFIC element mounted on the substrate and connected to the coil antenna. The substrate is embedded in the resin member so that the second principal surface is at a second surface side. The coil antenna is defined by first linear conductor patterns on the second surface, first metal posts extending between the first and second surfaces, second metal posts extending between the first and second surfaces, and second linear conductor patterns on the first surface. The RFIC element is disposed in the coil antenna.
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公开(公告)号：US10122418B2
公开(公告)日：2018-11-06
申请号：US15835832
申请日：2017-12-08
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Makoto Yasutake , Kunihiro Komaki , Noboru Kato
Abstract: A coupling assistance device is provided with a base material having a first principal surface, and a planar antenna provided at the base material. Moreover, the first principal surface of the base material has a first region to which a coil antenna of a portable telephone terminal is to be adjacent, and a second region to which a coil antenna of an RFID tag-containing article is to be adjacent. The planar antenna is provided from the first region over to the second region of the base material, and is coupled to the antenna of the portable telephone terminal in the first region and to the antenna of the RFID tag-containing article in the second region.
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