Patents by Inventor Hayato Miyashita
Hayato Miyashita 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: 11953347Abstract: A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.Type: GrantFiled: April 27, 2023Date of Patent: April 9, 2024Assignee: TDK CORPORATIONInventors: Tsuyoshi Umehara, Hayato Miyashita, Keisuke Uchida, Hiraku Hirabayashi
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Publication number: 20240077373Abstract: A force sensor module according to an embodiment of the present disclosure includes a plurality of force sensors. Each of the force sensor includes a plurality of sensor sections having force detection directions different from each other, and a flexible rubber member that is provided to cover the plurality of sensor sections. The rubber member is configured to transmit a force inputted from outside to the plurality of force sensors by deformation corresponding to the force.Type: ApplicationFiled: December 16, 2021Publication date: March 7, 2024Inventors: TOMOKO KATSUHARA, HIDETOSHI MIYASHITA, RUI KAMADA, KIYOKAZU MIYAZAWA, TOSHIMITSU TSUBOI, HAYATO HASEGAWA
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Publication number: 20230258473Abstract: A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.Type: ApplicationFiled: April 27, 2023Publication date: August 17, 2023Applicant: TDK CORPORATIONInventors: Tsuyoshi UMEHARA, Hayato MIYASHITA, Keisuke UCHIDA, Hiraku HIRABAYASHI
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Patent number: 11674822Abstract: A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.Type: GrantFiled: June 2, 2020Date of Patent: June 13, 2023Assignee: TDK CORPORATIONInventors: Tsuyoshi Umehara, Hayato Miyashita, Keisuke Uchida, Hiraku Hirabayashi
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Publication number: 20230074404Abstract: A pair of bias magnets applies a bias magnetic field to the magneto-resistive effect element, the bias magnetic field having a component in a direction such that the component cancels the external magnetic field that is applied to the magneto-resistive effect element and a component that is perpendicular to the external magnetic field. The bias magnet has an elongate cross section in a plane that is parallel both to the external magnetic field and to the bias magnetic field. In a projection plane that is parallel to the cross section and onto which the bias magnets and the magneto-resistive effect element are projected, the bias magnet includes an element facing side that is opposite to the magneto-resistive effect element and that extends in a longitudinal direction. The bias magnet is magnetized in a direction that is perpendicular to the longitudinal direction. The element facing side is longer than other sides.Type: ApplicationFiled: November 14, 2022Publication date: March 9, 2023Inventors: Yohei HIROTA, Hayato MIYASHITA, Tsuyoshi UMEHARA, Hiraku HIRABAYASHI
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Patent number: 11519978Abstract: A pair of bias magnets applies a bias magnetic field to the magneto-resistive effect element, the bias magnetic field having a component in a direction such that the component cancels the external magnetic field that is applied to the magneto-resistive effect element and a component that is perpendicular to the external magnetic field. The bias magnet has an elongate cross section in a plane that is parallel both to the external magnetic field and to the bias magnetic field. In a projection plane that is parallel to the cross section and onto which the bias magnets and the magneto-resistive effect element are projected, the bias magnet includes an element facing side that is opposite to the magneto-resistive effect element and that extends in a longitudinal direction. The bias magnet is magnetized in a direction that is perpendicular to the longitudinal direction. The element facing side is longer than other sides.Type: GrantFiled: March 25, 2021Date of Patent: December 6, 2022Assignee: TDK CorporationInventors: Yohei Hirota, Hayato Miyashita, Tsuyoshi Umehara, Hiraku Hirabayashi
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Patent number: 11486734Abstract: A magnetic sensor system includes a magnetic field generator and a magnetic sensor. The magnetic sensor includes a plurality of MR elements. The plurality of MR elements are each configured so that a bias magnetic field in a second direction orthogonal to a first direction is applied to a free layer, and to change in resistance with a strength of a magnetic field component. A maximum strength of the magnetic field component applied to each of the MR elements is greater than or equal to 1.2 times the strength of a bias magnetic field.Type: GrantFiled: July 26, 2021Date of Patent: November 1, 2022Assignee: TDK CORPORATIONInventors: Yongfu Cai, Hayato Miyashita, Tsuyoshi Umehara, Yuta Saito
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Publication number: 20220042826Abstract: A magnetic sensor system includes a magnetic field generator and a magnetic sensor. The magnetic sensor includes a plurality of MR elements. The plurality of MR elements are each configured so that a bias magnetic field in a second direction orthogonal to a first direction is applied to a free layer, and to change in resistance with a strength of a magnetic field component. A maximum strength of the magnetic field component applied to each of the MR elements is greater than or equal to 1.2 times the strength of a bias magnetic field.Type: ApplicationFiled: July 26, 2021Publication date: February 10, 2022Applicant: TDK CORPORATIONInventors: Yongfu CAI, Hayato MIYASHITA, Tsuyoshi UMEHARA, Yuta SAITO
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Publication number: 20210208216Abstract: A pair of bias magnets applies a bias magnetic field to the magneto-resistive effect element, the bias magnetic field having a component in a direction such that the component cancels the external magnetic field that is applied to the magneto-resistive effect element and a component that is perpendicular to the external magnetic field. The bias magnet has an elongate cross section in a plane that is parallel both to the external magnetic field and to the bias magnetic field. In a projection plane that is parallel to the cross section and onto which the bias magnets and the magneto-resistive effect element are projected, the bias magnet includes an element facing side that is opposite to the magneto-resistive effect element and that extends in a longitudinal direction. The bias magnet is magnetized in a direction that is perpendicular to the longitudinal direction. The element facing side is longer than other sides.Type: ApplicationFiled: March 25, 2021Publication date: July 8, 2021Inventors: Yohei HIROTA, Hayato MIYASHITA, Tsuyoshi UMEHARA, Hiraku HIRABAYASHI
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Patent number: 11009567Abstract: A pair of bias magnets applies a bias magnetic field to the magneto-resistive effect element, the bias magnetic field having a component in a direction such that the component cancels the external magnetic field that is applied to the magneto-resistive effect element and a component that is perpendicular to the external magnetic field. The bias magnet has an elongate cross section in a plane that is parallel both to the external magnetic field and to the bias magnetic field. In a projection plane that is parallel to the cross section and onto which the bias magnets and the magneto-resistive effect element are projected, the bias magnet includes an element facing side that is opposite to the magneto-resistive effect element and that extends in a longitudinal direction. The bias magnet is magnetized in a direction that is perpendicular to the longitudinal direction. The element facing side is longer than other sides.Type: GrantFiled: May 30, 2018Date of Patent: May 18, 2021Assignee: TDK CorporationInventors: Yohei Hirota, Hayato Miyashita, Tsuyoshi Umehara, Hiraku Hirabayashi
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Publication number: 20200292354Abstract: A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.Type: ApplicationFiled: June 2, 2020Publication date: September 17, 2020Applicant: TDK CORPORATIONInventors: Tsuyoshi UMEHARA, Hayato MIYASHITA, Keisuke UCHIDA, Hiraku HIRABAYASHI
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Patent number: 10712177Abstract: A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.Type: GrantFiled: August 30, 2018Date of Patent: July 14, 2020Assignee: TDK CORPORATIONInventors: Tsuyoshi Umehara, Hayato Miyashita, Keisuke Uchida, Hiraku Hirabayashi
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Patent number: 10498198Abstract: A magnetic sensor includes a magnetic detection element circuit that includes first and second magnetic detection elements, which are connected in series, and an output terminal, which is positioned between the first and second magnetic detection elements; an impedance matching device, which has a prescribed input voltage range and is connected to an output terminal of the magnetic detection element circuit; a first current supply source, which supplies an electric current to the magnetic detection element circuit; and a second current supply source, which supplies an electric current to the impedance matching device. A resistor is provided between the output terminal of the magnetic detection element circuit and the first current supply source and/or a reference electric potential point.Type: GrantFiled: December 5, 2017Date of Patent: December 3, 2019Assignee: TDK CorporationInventors: Yosuke Komasaki, Naoki Ohta, Hayato Miyashita, Takakazu Imai, Hiraku Hirabayashi, Masanori Sakai, Satoshi Abe, Tsuyoshi Umehara
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Publication number: 20190128698Abstract: A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.Type: ApplicationFiled: August 30, 2018Publication date: May 2, 2019Applicant: TDK CORPORATIONInventors: Tsuyoshi UMEHARA, Hayato MIYASHITA, Keisuke UCHIDA, Hiraku HIRABAYASHI
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Publication number: 20180356473Abstract: A pair of bias magnets applies a bias magnetic field to the magneto-resistive effect element, the bias magnetic field having a component in a direction such that the component cancels the external magnetic field that is applied to the magneto-resistive effect element and a component that is perpendicular to the external magnetic field. The bias magnet has an elongate cross section in a plane that is parallel both to the external magnetic field and to the bias magnetic field. In a projection plane that is parallel to the cross section and onto which the bias magnets and the magneto-resistive effect element are projected, the bias magnet includes an element facing side that is opposite to the magneto-resistive effect element and that extends in a longitudinal direction. The bias magnet is magnetized in a direction that is perpendicular to the longitudinal direction. The element facing side is longer than other sides.Type: ApplicationFiled: May 30, 2018Publication date: December 13, 2018Inventors: Yohei HIROTA, Hayato MIYASHITA, Tsuyoshi UMEHARA, Hiraku HIRABAYASHI
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Publication number: 20180254686Abstract: A magnetic sensor includes a magnetic detection element circuit that includes first and second magnetic detection elements, which are connected in series, and an output terminal, which is positioned between the first and second magnetic detection elements; an impedance matching device, which has a prescribed input voltage range and is connected to an output terminal of the magnetic detection element circuit; a first current supply source, which supplies an electric current to the magnetic detection element circuit; and a second current supply source, which supplies an electric current to the impedance matching device. A resistor is provided between the output terminal of the magnetic detection element circuit and the first current supply source and/or a reference electric potential point.Type: ApplicationFiled: December 5, 2017Publication date: September 6, 2018Inventors: Yosuke Komasaki, Naoki Ohta, Hayato Miyashita, Takakazu Imai, Hiraku Hirabayashi, Masanori Sakai, Satoshi Abe, Tsuyoshi Umehara
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Patent number: 7791625Abstract: A thermal head that includes a bonding portion and a protective layer. The thermal head prevents electrostatic discharge damage from occurring in the bonding portion of the thermal head due to the protective layer being electrostatically charged.Type: GrantFiled: November 28, 2008Date of Patent: September 7, 2010Assignee: TDK CorporationInventors: Hiroshi Yamada, Kazuhito Uchida, Tadashi Iino, Suguru Andoh, Hayato Miyashita
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Publication number: 20090174758Abstract: The object of the invention is to provide a reliable thermal head designed to prevent electrostatic discharge damage from occurring in the bonding pad portion due to the protective layer being electrostatically charged; a method for manufacture of the thermal head; and a printing head for the thermal head. The present invention relates to the thermal head including: the heat elements 24 provided on the substrate 25; the wiring patterns 27 and 47 for applying electric power to the heat elements; and the bonding pad portion 52; wherein the heat elements 24 being covered by the protective layer 5; wherein the substrate 25 is secured on the metallic mount 21; and wherein the protective layer 51 is electrically connected to the mount 21.Type: ApplicationFiled: November 28, 2008Publication date: July 9, 2009Applicant: TDK Corp.Inventors: Hiroshi YAMADA, Kazuhito UCHIDA, Tadashi IINO, Suguru ANDOH, Hayato Miyashita
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Publication number: 20070223545Abstract: Optical head 1 has heat sink 6. This heat sink 6 has front overhang section 16 (contact part), the 2nd front drooping sections 17a (contact part) and 17b (contact part), the 1st side drooping section 18, side overhang section 19 (contact part), and the 2nd side drooping sections 20a (contact part) and 20b (contact part) which carry out field contact in laser diodes 4 and 5 and laser holders 12 and 13. Also this heat sink 6 has body part 14 which intervenes between an optical disc and housing 3.Type: ApplicationFiled: March 5, 2007Publication date: September 27, 2007Applicant: TDK CORPORATIONInventors: Yoshio Saito, Hayato Miyashita, Xu Yitai