Patents by Inventor Nobuhito Tsubaki
Nobuhito Tsubaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9917366Abstract: An antenna device includes a base including a planar conductor disposed thereon, and a coil antenna. The coil antenna includes a coil conductor wound around a magnetic core. The coil antenna is arranged such that a coil opening of the coil conductor is closed to an edge of the planar conductor. A current passing through the coil conductor induces a current in the planar conductor. Thus, a first magnetic flux occurs in the coil antenna, and a second magnetic flux occurs in the planar conductor. Therefore, a third magnetic flux occurs in an area of the planar conductor. Accordingly, the antenna device achieves a small footprint, a small-sized communication terminal apparatus and a desired communication distance.Type: GrantFiled: August 30, 2012Date of Patent: March 13, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Teppei Miura, Nobuo Ikemoto, Jun Sasaki, Noboru Kato, Nobuhito Tsubaki
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Patent number: 9905926Abstract: An antenna device includes a feeding coil antenna and a booster coil antenna electromagnetically coupled to the feeding coil antenna. The feeding coil antenna includes a plurality of coil portions including at least one magnetic body and each including a coil conductor wound around the at least one magnetic body. The plurality of coil portions are connected to one another in an in-phase mode, and are arranged near one another such that winding axes of the coil conductors are oriented approximately in the same direction and at least portions of respective openings of the coil conductors face one another.Type: GrantFiled: November 1, 2016Date of Patent: February 27, 2018Assignee: Murata Manufacturing Co., Ltd.Inventors: Nobuhito Tsubaki, Noboru Kato
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Patent number: 9876275Abstract: An antenna device includes a casing including a metal casing portion and a feed coil. The metal casing portion includes a main surface, a side surface connected to the main surfaces, and a notch portion located in the side surface. The feed coil is disposed inside the casing to be coupled with the metal casing portion by a magnetic field, and includes a winding central portion forming a coil opening portion. The feed coil is disposed near the notch portion, with the coil opening portion directed to a region including the notch portion.Type: GrantFiled: September 7, 2016Date of Patent: January 23, 2018Assignee: Murata Manufacturing Co., Ltd.Inventors: Shinichi Nakano, Masahiro Ozawa, Nobuhito Tsubaki
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Publication number: 20180011628Abstract: A display device includes a housing, an operation surface, a position sensor, a press sensor, and a display unit. The position sensor detects a touched position on the operation surface. The press sensor detects a press on the operation surface. The display unit displays an image. When the press sensor detects a pressing amount not smaller than a first threshold, a control unit sets, as a rotation axis of a three-dimensional image, a direction orthogonal to the sliding direction of the touched position detected in the position sensor. The control unit then rotates the three-dimensional image in accordance with the sliding direction of the touched position detected in the position sensor.Type: ApplicationFiled: September 6, 2017Publication date: January 11, 2018Inventors: Hidekazu Kano, Hiroaki Kitada, Nobuhito Tsubaki
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Publication number: 20170357886Abstract: An RF system is provided that includes an RFID card and a reader-writer device. The RFID card includes a substrate, an RFIC element, an antenna coil, and a deformation sensor. The reader-writer device and the RFID card transmit and receive predetermined information between an antenna coil of the RFID card and an antenna coil of the reader-writer device through a magnetic field. The RFIC element transmits the first signal via the antenna coil when the deformation sensor does not detect bending deformation of the substrate, and the RFIC element transmits the second signal via the antenna coil when the deformation sensor detects the bending deformation of the substrate.Type: ApplicationFiled: August 1, 2017Publication date: December 14, 2017Inventors: HIDEKI KAWAMURA, Nobuhito Tsubaki
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Patent number: 9780839Abstract: An active electrode and a passive electrode are electrically field-coupled with an active electrode and a passive electrode provided in a power transmission device, respectively. Power in a high frequency voltage excited on the active electrode and the passive electrode is supplied to a mobile unit via a step-down transformer, a rectification smoothing circuit, and a DC-DC converter. A CPU turns off switches when wireless communication is carried out. The passive electrode functions as a booster antenna that is magnetically field-coupled with an antenna coil. A high frequency signal outputted from an RF circuit is transmitted via the antenna coil and the passive electrode, and a high frequency signal transmitted from the power transmission circuit is inputted, via the passive electrode and the antenna coil, to the RF circuit.Type: GrantFiled: May 22, 2015Date of Patent: October 3, 2017Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Shinji Goma, Nobuhito Tsubaki, Noboru Kato, Tsuyoshi Suesada
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Publication number: 20170262066Abstract: An operation input device having an exterior portion that includes a band portion extending in a belt shape and having flexibility and a housing; and a control unit (23) that is housed in the exterior portion and performs input processing based on a detection signal indicating detection of a predetermined operation. The operation input device is provided with a deformation detection unit that outputs a detection signal associated with a deformation of the band portion or a deformation of the housing to the control unit.Type: ApplicationFiled: May 30, 2017Publication date: September 14, 2017Inventors: Hideki Kawamura, Nobuhito Tsubaki, Fumiya Isono, Takafumi Inoue, Takashi Kihara, Jun Endo, Masato Saito
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Publication number: 20170153706Abstract: A piezoelectric element that includes a plurality of laminated piezoelectric films and adhesive layers. The piezoelectric films stretch and contract in a predetermined direction parallel to principal surfaces thereof when a voltage is applied thereto. The adhesive layers are formed partially between the piezoelectric films when seen from a plan view, are aligned at intervals in the predetermined direction of the stretching and contracting of the piezoelectric films and bond the piezoelectric films to each other. The adhesive layers are formed at both ends of the piezoelectric films in the predetermined direction.Type: ApplicationFiled: February 14, 2017Publication date: June 1, 2017Inventors: KENTARO USUI, Junichi Hashimoto, Kentaro Mikawa, Nobuhito Tsubaki
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Patent number: 9627760Abstract: In order to increase flexibility regarding a disposition of an antenna coil and to enable a hot spot to be provided at a desired position, an antenna device includes a main coil antenna and a sub-coil antenna connected to the main coil antenna. A coil opening of the sub-coil antenna and a coil opening of the main coil antenna are arranged side by side in plan view so that the main coil antenna and the sub-coil antenna are magnetically coupled to each other. The main coil antenna and the sub-coil antenna are wound so as to generate magnetic fields having opposite phases.Type: GrantFiled: April 10, 2014Date of Patent: April 18, 2017Assignee: Murata Manufacturing Co., Ltd.Inventor: Nobuhito Tsubaki
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Publication number: 20170047655Abstract: An antenna device includes a feeding coil antenna and a booster coil antenna electromagnetically coupled to the feeding coil antenna. The feeding coil antenna includes a plurality of coil portions including at least one magnetic body and each including a coil conductor wound around the at least one magnetic body. The plurality of coil portions are connected to one another in an in-phase mode, and are arranged near one another such that winding axes of the coil conductors are oriented approximately in the same direction and at least portions of respective openings of the coil conductors face one another.Type: ApplicationFiled: November 1, 2016Publication date: February 16, 2017Inventors: Nobuhito TSUBAKI, Noboru KATO
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Publication number: 20160380338Abstract: An antenna device includes a casing including a metal casing portion and a feed coil. The metal casing portion includes a main surface, a side surface connected to the main surfaces, and a notch portion located in the side surface. The feed coil is disposed inside the casing to be coupled with the metal casing portion by a magnetic field, and includes a winding central portion forming a coil opening portion. The feed coil is disposed near the notch portion, with the coil opening portion directed to a region including the notch portion.Type: ApplicationFiled: September 7, 2016Publication date: December 29, 2016Inventors: Shinichi NAKANO, Masahiro OZAWA, Nobuhito TSUBAKI
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Patent number: 9515382Abstract: An antenna device includes a feeding coil antenna and a booster coil antenna electromagnetically coupled to the feeding coil antenna. The feeding coil antenna includes a plurality of coil portions including at least one magnetic body and each including a coil conductor wound around the at least one magnetic body. The plurality of coil portions are connected to one another in an in-phase mode, and are arranged near one another such that winding axes of the coil conductors are oriented approximately in the same direction and at least portions of respective openings of the coil conductors face one another.Type: GrantFiled: March 18, 2014Date of Patent: December 6, 2016Assignee: Murata Manufacturing Co., Ltd.Inventors: Nobuhito Tsubaki, Noboru Kato
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Patent number: 9466871Abstract: An antenna device includes a casing including a metal casing portion and a feed coil. The metal casing portion includes a main surface, a side surface connected to the main surfaces, and a notch portion located in the side surface. The feed coil is disposed inside the casing to be coupled with the metal casing portion by a magnetic field, and includes a winding central portion forming a coil opening portion. The feed coil is disposed near the notch portion, with the coil opening portion directed to a region including the notch portion.Type: GrantFiled: May 15, 2014Date of Patent: October 11, 2016Assignee: Murata Manufacturing Co., Ltd.Inventors: Shinichi Nakano, Masahiro Ozawa, Nobuhito Tsubaki
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Publication number: 20160043469Abstract: To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.Type: ApplicationFiled: October 21, 2015Publication date: February 11, 2016Inventors: Nobuhito TSUBAKI, Takashi NOMA, Noboru KATO
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Patent number: 9214728Abstract: To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.Type: GrantFiled: March 21, 2014Date of Patent: December 15, 2015Assignee: Murata Manufacturing Co., Ltd.Inventors: Nobuhito Tsubaki, Takashi Noma, Noboru Kato
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Publication number: 20150256228Abstract: An active electrode and a passive electrode are electrically field-coupled with an active electrode and a passive electrode provided in a power transmission device, respectively. Power in a high frequency voltage excited on the active electrode and the passive electrode is supplied to a mobile unit via a step-down transformer, a rectification smoothing circuit, and a DC-DC converter. A CPU turns off switches when wireless communication is carried out. The passive electrode functions as a booster antenna that is magnetically field-coupled with an antenna coil. A high frequency signal outputted from an RF circuit is transmitted via the antenna coil and the passive electrode, and a high frequency signal transmitted from the power transmission circuit is inputted, via the passive electrode and the antenna coil, to the RF circuit.Type: ApplicationFiled: May 22, 2015Publication date: September 10, 2015Inventors: Shinji Goma, Nobuhito Tsubaki, Noboru Kato, Tsuyoshi Suesada
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Publication number: 20150207205Abstract: An antenna of a communication terminal is disposed on a side on which a bottom surface of a reflective plate, which is included in a display, is present. When the reflective plate is irradiated by an LED light source, the antenna cannot be seen from the side on which a display screen of the display is disposed. Accordingly, an antenna coil of the antenna does not need transparent electrodes and can be made of various materials each having a high conductivity. Therefore, the antenna has high sensitivity, low manufacturing cost, and very efficiently performs near field communication with an external device located on the display screen side of the display.Type: ApplicationFiled: March 31, 2015Publication date: July 23, 2015Inventors: Noboru KATO, Masahiro OZAWA, Nobuhito TSUBAKI
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Publication number: 20140247188Abstract: An antenna device includes a casing including a metal casing portion and a feed coil. The metal casing portion includes a main surface, a side surface connected to the main surfaces, and a notch portion located in the side surface. The feed coil is disposed inside the casing to be coupled with the metal casing portion by a magnetic field, and includes a winding central portion forming a coil opening portion. The feed coil is disposed near the notch portion, with the coil opening portion directed to a region including the notch portion.Type: ApplicationFiled: May 15, 2014Publication date: September 4, 2014Applicant: Murata Manufacturing Co., Ltd.Inventors: Shinichi NAKANO, Masahiro OZAWA, Nobuhito TSUBAKI
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Publication number: 20140218262Abstract: In order to increase flexibility regarding a disposition of an antenna coil and to enable a hot spot to be provided at a desired position, an antenna device includes a main coil antenna and a sub-coil antenna connected to the main coil antenna. A coil opening of the sub-coil antenna and a coil opening of the main coil antenna are arranged side by side in plan view so that the main coil antenna and the sub-coil antenna are magnetically coupled to each other. The main coil antenna and the sub-coil antenna are wound so as to generate magnetic fields having opposite phases.Type: ApplicationFiled: April 10, 2014Publication date: August 7, 2014Applicant: Murata Manufacturing Co., Ltd.Inventor: Nobuhito TSUBAKI
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Publication number: 20140203985Abstract: To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.Type: ApplicationFiled: March 21, 2014Publication date: July 24, 2014Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Nobuhito TSUBAKI, Takashi NOMA, Noboru KATO