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1. 发明授权

US09557191B2 Rotating field sensor and angle determination method using the same 有权
标题翻译：旋转场传感器和角度确定方法使用相同
公开(公告)号：US09557191B2
公开(公告)日：2017-01-31
申请号：US14508101
申请日：2014-10-07
申请人： TDK CORPORATION
发明人： Yohei Hirota
IPC分类号： G01D5/14
CPC分类号： G01D5/14 , G01D5/145
摘要： A rotating field sensor includes four detection circuits and a computing unit. In the computing unit, defined are four first detection circuit groups each consisting of three detection circuits. Further, defined in each first detection circuit group are three second detection circuit groups each consisting of two detection circuits. The computing unit calculates an angle value for each of all the second detection circuit groups on the basis of the output signals of the two detection circuits, extracts one or more normal first detection circuit groups each of which is such one that all three angle values corresponding to the three second detection circuit groups fall within an angle range of a predetermined breadth, and determines an angle detection value on the basis of at least one of all angle values corresponding to all second detection circuit groups belonging to the one or more normal first detection circuit groups.
摘要翻译：旋转场传感器包括四个检测电路和一个计算单元。在计算单元中，定义了四个第一检测电路组，每组包括三个检测电路。此外，在每个第一检测电路组中定义的是三个第二检测电路组，每组由两个检测电路组成。计算单元基于两个检测电路的输出信号计算所有第二检测电路组中的每一个的角度值，提取一个或多个正常的第一检测电路组，每个正常的第一检测电路组是所有三个角度值对应的三个第二检测电路组落在预定宽度的角度范围内，并且基于与属于一个或多个正常第一检测的所有第二检测电路组对应的所有角度值中的至少一个来确定角度检测值电路组。

2. 发明授权

US10648787B2 Rotating field sensor 有权
公开(公告)号：US10648787B2
公开(公告)日：2020-05-12
申请号：US16454284
申请日：2019-06-27
申请人： TDK CORPORATION
发明人： Yohei Hirota , Homare Tokida , Hiraku Hirabayashi
IPC分类号： G01B7/30 , G01D5/14 , G01R33/09
摘要： A first, a second, and a third computing circuit respectively generate a first post-computation signal with a second harmonic component reduced as compared with first and second signals, a second post-computation signal with the second harmonic component reduced as compared with third and fourth signals, and a third post-computation signal with the second harmonic component reduced as compared with fifth and sixth signals. A fourth and a fifth computing circuit respectively generate a fourth post-computation signal with a third harmonic component reduced as compared with the first and second post-computation signals, and a fifth post-computation signal with the third harmonic component reduced as compared with the second and third post-computation signals. A sixth computing circuit determines a detected angle value based on the fourth and fifth post-computation signals.

3. 发明授权

US10082406B2 Magnetic field detection apparatus and rotation detection apparatus 有权
公开(公告)号：US10082406B2
公开(公告)日：2018-09-25
申请号：US15234042
申请日：2016-08-11
申请人： TDK Corporation
发明人： Hiroshi Naganuma , Yohei Hirota , Kunihiro Ueda
IPC分类号： G01D5/16 , G01D5/14
CPC分类号： G01D5/16 , G01D5/147
摘要： A magnetic field detection apparatus has a first magnetic sensor and a bias magnet positioned to face the first magnetic sensor. The bias magnet has a magnetic pole surface that faces the first magnetic sensor and that applies a bias magnetic field to the first magnetic sensor. The first magnetic sensor detects magnetic field in a first direction that is parallel to the magnetic pole surface. The magnetic pole surface of the bias magnet has a plurality of grooves arranged in the first direction.

4. 发明授权

US11088106B2 Stack of electrical components and method of producing the same 有权
公开(公告)号：US11088106B2
公开(公告)日：2021-08-10
申请号：US16556809
申请日：2019-08-30
申请人： TDK Corporation
发明人： Yohei Hirota , Hiroshi Yamazaki , Hitoshi Iwama , Yusuke Takahashi
IPC分类号： H01L23/00 , H01L25/18
摘要： A stack of electrical components has a first electrical component having a first surface, a second surface that is opposite to the first surface and a side surface that is located between the first surface and the second surface; a second electrical component having a third surface on which the first electrical component is mounted, the third surface facing the second surface and forming a corner portion between the third surface and the side surface; an adhesive layer that bonds the first electrical component to the second electrical component, wherein the adhesive layer has a first portion that is located between the second surface and the third surface and a curved second portion that fills the corner portion; and a conductive layer that extends on a side of the side surface, curves along the second portion and extends to the third surface.

5. 发明授权

US10401195B2 Magnet and displacement detection unit 有权
公开(公告)号：US10401195B2
公开(公告)日：2019-09-03
申请号：US15439264
申请日：2017-02-22
申请人： TDK CORPORATION
发明人： Yohei Hirota , Hiraku Hirabayashi , Keisuke Uchida , Kazuya Watanabe
IPC分类号： G01D5/12 , G01D5/14 , G01R33/00 , G01R33/09 , G01D5/16
摘要： A displacement detection unit includes a magnet and a magnetic detector. The magnet includes a first magnetic-pole region polarized into a south pole and a second magnetic-pole region polarized into a north pole, and generates a magnetic field around the magnet. The magnetic detector is movable relative to the magnet in a first direction, and detects a change in the magnetic field and thereby detects a displacement of the magnet in the first direction. The magnet includes a transition section in which a ratio of a magnetic volume of the second magnetic-pole region in a second direction to a magnetic volume of the first magnetic-pole region in the second direction gradually varies in the first direction. The second direction is orthogonal to the first direction.

6. 发明授权

US09574905B2 Rotating field sensor and angle determination method using the same 有权
标题翻译：旋转场传感器和角度确定方法使用相同
公开(公告)号：US09574905B2
公开(公告)日：2017-02-21
申请号：US14499891
申请日：2014-09-29
申请人： TDK CORPORATION
发明人： Yohei Hirota , Hiraku Hirabayashi
IPC分类号： G01B7/30 , G01D5/16 , G01D5/14 , G01R33/09
CPC分类号： G01D5/16 , G01D5/145 , G01R33/09
摘要： A rotating field sensor includes four detection circuits each of which generates an output signal responsive to the direction of a rotating magnetic field, and an angle calculation unit configured to calculate four angle values in correspondence to four groups each consisting of two detection circuits selected from the four detection circuits. The angle calculation unit calculates each of the four angle values on the basis of two output signals of the two detection circuits constituting a corresponding one of the four groups.
摘要翻译：旋转场传感器包括四个检测电路，每个检测电路响应于旋转磁场的方向产生输出信号;以及角度计算单元，被配置为计算与四个组对应的四个角度值，每组包括两个检测电路，四个检测电路。角度计算单元基于构成四组中的相应一个的两个检测电路的两个输出信号来计算四个角度值中的每一个。

7. 发明授权

US11855035B2 Stack of electrical components and method of producing the same 有权
公开(公告)号：US11855035B2
公开(公告)日：2023-12-26
申请号：US17362094
申请日：2021-06-29
申请人： TDK Corporation
发明人： Yohei Hirota , Hiroshi Yamazaki , Hitoshi Iwama , Yusuke Takahashi
IPC分类号： H01L23/00 , H01L25/18
CPC分类号： H01L24/73 , H01L24/29 , H01L24/32 , H01L24/40 , H01L24/83 , H01L24/92 , H01L25/18 , H01L2224/26145 , H01L2224/29191 , H01L2224/32145 , H01L2224/40106 , H01L2224/40145 , H01L2224/73263 , H01L2224/83855 , H01L2224/92246
摘要： A stack of electrical components has a first electrical component having a first surface, a second surface that is opposite to the first surface and a side surface that is located between the first surface and the second surface; a second electrical component having a third surface on which the first electrical component is mounted, the third surface facing the second surface and forming a corner portion between the third surface and the side surface; an adhesive layer that bonds the first electrical component to the second electrical component, the adhesive layer has a first portion that is located between the second and third surface and a second portion that is made of a same material as the first portion and that fills the corner portion; and a conductive layer that extends on a side of the side surface, curves along the second portion and extends to the third surface.

8. 发明授权

US11519978B2 Magnetic sensor and camera module 有权
公开(公告)号：US11519978B2
公开(公告)日：2022-12-06
申请号：US17212430
申请日：2021-03-25
申请人： TDK Corporation
发明人： Yohei Hirota , Hayato Miyashita , Tsuyoshi Umehara , Hiraku Hirabayashi
IPC分类号： G01R33/09
摘要： 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.

9. 发明授权

US11009567B2 Magnetic sensor and camera module 有权
公开(公告)号：US11009567B2
公开(公告)日：2021-05-18
申请号：US15992411
申请日：2018-05-30
申请人： TDK Corporation
发明人： Yohei Hirota , Hayato Miyashita , Tsuyoshi Umehara , Hiraku Hirabayashi
IPC分类号： G01R33/09
摘要： 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.

10. 发明授权

US10775195B2 Rotation angle sensing device 有权
公开(公告)号：US10775195B2
公开(公告)日：2020-09-15
申请号：US15448984
申请日：2017-03-03
申请人： TDK Corporation
发明人： Masaki Nagata , Hiraku Hirabayashi , Yohei Hirota
IPC分类号： G01D5/14 , G01B7/30 , G01D5/16 , G01D5/165
摘要： A rotation angle sensing device is provided with a magnet that is placed to be integrally rotatable with a rotary shaft of a rotating body in association with a rotating body, where the shape of the magnet as viewed along the rotary shaft is substantially circular; a magnetic sensor part that outputs a sensor signal based upon a change in a direction of a magnetic field in association with the rotation of the magnet; and a rotation angle detecting part that detects a rotation angle of the rotating body based upon the sensor signal output by the magnetic sensor part. The magnet has a component of a magnetization vector in a direction that is orthogonal to the rotation axis. When a circular virtual plane that is orthogonal to the rotary shaft centering upon the rotary shaft is set in the vicinity of the magnet, the magnetic sensor part is placed at a position where the amplitudes of the magnetic field intensity Hr in the radial direction and the magnetic field intensity Ho in the circumferential direction on the virtual plane are substantially the same, and the magnetic field intensity Hr in the radial direction and/or the magnetic field intensity Ho in the circumferential direction are/is output as the sensor signal.

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