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1. 发明授权

US06191577B1 Magnetic sensor exhibiting large change in resistance at low external magnetic field 失效
标题翻译：磁传感器在低外部磁场下表现出较大的电阻变化
公开(公告)号：US06191577B1
公开(公告)日：2001-02-20
申请号：US09036606
申请日：1998-03-06
申请人： Yoshito Sasaki , Naoya Hasegawa , Akihiro Makino , Ichiro Tokunaga , Seiji Kikuchi
发明人： Yoshito Sasaki , Naoya Hasegawa , Akihiro Makino , Ichiro Tokunaga , Seiji Kikuchi
IPC分类号： G01R3309
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B2005/3996 , H01F10/3268
摘要： A magnetoresistive sensor includes a plurality of multilayered magnetoresistive films arranged in parallel. Each multilayered magnetoresistive film includes at least one pinned ferromagnetic layer and at least one free magnetic layer. Reversion of magnetization of the pinned ferromagnetic layer is pinned, whereas the vector of magnetization of the free ferromagnetic layer freely reverses in response to an external magnetic field. The vectors of magnetization of the pinned ferromagnetic layers in two adjacent multilayered magnetoresistive films are substantially antiparallel to each other.
摘要翻译：磁阻传感器包括并列布置的多个多层磁阻膜。每个多层磁阻膜包括至少一个钉扎铁磁层和至少一个自由磁性层。固定的铁磁层的磁化反转被固定，而自由铁磁层的磁化矢量响应于外部磁场自由地反转。两个相邻的多层磁阻膜中的钉扎铁磁层的磁化向量基本上是反平行的。

2. 发明申请

US20060214656A1 Angle sensor having low waveform distortion 失效
标题翻译：角度传感器具有低波形失真
公开(公告)号：US20060214656A1
公开(公告)日：2006-09-28
申请号：US11445124
申请日：2006-05-31
申请人： Yoshihiro Sudo , Ichiro Tokunaga , Yoshikazu Shimizu , Naoya Hasegawa , Fumihito Koike
发明人： Yoshihiro Sudo , Ichiro Tokunaga , Yoshikazu Shimizu , Naoya Hasegawa , Fumihito Koike
IPC分类号： G01B7/30
CPC分类号： G01D5/145
摘要： A magnetoresistive element includes a meandering X-axis array that is constituted by X-axis segments alternately connected, and a meandering Y-axis array that is constituted by Y-axis segments alternately connected. When rotated 90°, the Y-axis array has the same layout as the X-axis array. Such a structure cancels the electrical resistance change due to the AMR effect, thus reducing the waveform distortion of output voltage.
摘要翻译：磁阻元件包括由交替连接的X轴段构成的曲折X轴阵列和由交替连接的Y轴分段构成的曲折Y轴阵列。旋转90°时，Y轴阵列的布局与X轴阵列相同。这样的结构抵消了由于AMR效应引起的电阻变化，从而降低了输出电压的波形失真。

3. 发明授权

US07193411B2 Angle sensor having low waveform distortion 失效
标题翻译：角度传感器具有低波形失真
公开(公告)号：US07193411B2
公开(公告)日：2007-03-20
申请号：US11445124
申请日：2006-05-31
申请人： Yoshihiro Sudo , Ichiro Tokunaga , Yoshikazu Shimizu , Naoya Hasegawa , Fumihito Koike
发明人： Yoshihiro Sudo , Ichiro Tokunaga , Yoshikazu Shimizu , Naoya Hasegawa , Fumihito Koike
IPC分类号： G01B7/30 , G01R33/09 , H01L43/08
CPC分类号： G01D5/145
摘要： A magnetoresistive element includes a meandering X-axis array that is constituted by X-axis segments alternately connected, and a meandering Y-axis array that is constituted by Y-axis segments alternately connected. When rotated 90°, the Y-axis array has the same layout as the X-axis array. Such a structure cancels the electrical resistance change due to the AMR effect, thus reducing the waveform distortion of output voltage.
摘要翻译：磁阻元件包括由交替连接的X轴段构成的曲折X轴阵列和由交替连接的Y轴分段构成的曲折Y轴阵列。旋转90°时，Y轴阵列的布局与X轴阵列相同。这样的结构抵消了由于AMR效应引起的电阻变化，从而降低了输出电压的波形失真。

4. 发明授权

US07265540B2 Angle sensor having low waveform distortion 有权
公开(公告)号：US07265540B2
公开(公告)日：2007-09-04
申请号：US10879674
申请日：2004-06-28
申请人： Yoshihiro Sudo , Ichiro Tokunaga , Yoshikazu Shimizu , Naoya Hasegawa , Fumihito Koike
发明人： Yoshihiro Sudo , Ichiro Tokunaga , Yoshikazu Shimizu , Naoya Hasegawa , Fumihito Koike
IPC分类号： G01B7/30 , G01R33/09 , H01L43/08
CPC分类号： G01D5/145
摘要： A magnetoresistive element includes a meandering X-axis array that is constituted by X-axis segments alternately connected, and a meandering Y-axis array that is constituted by Y-axis segments alternately connected. When rotated 90°, the Y-axis array has the same layout as the X-axis array. Such a structure cancels the electrical resistance change due to the AMR effect, thus reducing the waveform distortion of output voltage.

5. 发明授权

US06900713B2 Magnetic switch capable of instantaneous switching of an output signal and magnetic sensor 有权
标题翻译：能够瞬时切换输出信号和磁传感器的磁性开关
公开(公告)号：US06900713B2
公开(公告)日：2005-05-31
申请号：US10215735
申请日：2002-08-09
申请人： Masao Kasashima , Ichiro Tokunaga , Hirofumi Okumura , Seiji Kikuchi
发明人： Masao Kasashima , Ichiro Tokunaga , Hirofumi Okumura , Seiji Kikuchi
IPC分类号： G01R33/09 , H01H36/00 , H01L43/08 , H03K17/97 , H01H9/00
CPC分类号： H03K17/97
摘要： A magnetic switch using magnetoresistive elements having respective free layers whose magnetization directions are varied by an external magnetic field. The magnetic switch also has a first magnet and a second magnet that produce respective magnetic fields that serve as the external magnetic field and are different from each other in strength and opposite to each other in direction, and a magnetic shield member whose relative position with respect to the first magnet and the second magnet varies. The magnetic shield member moves between a first position with which both of the magnetic fields of the first magnet and the second magnet act on the magnetoresistive elements to magnetize their free layers in a first direction and a second position with which only one of the magnetic fields of the first magnet and the second magnet acts on the magnetoresistive elements to magnetize their free layers in a second direction that is opposite to the first direction.
摘要翻译：一种使用磁阻元件的磁开关，其具有各自的磁化方向由外部磁场变化的自由层。磁开关还具有第一磁体和第二磁体，其产生用作外部磁场的各自的磁场，并且在强度上彼此不同，并且在方向上彼此相反;以及磁屏蔽构件，其相对位置相对于到第一磁体和第二磁体变化。磁屏蔽构件在第一位置和第二位置之间移动，第一位置与第一磁体和第二磁体两者的磁场作用在磁阻元件上以在第一方向上磁化它们的自由层，而第二位置只有一个磁场第一磁体和第二磁体作用在磁阻元件上以在与第一方向相反的第二方向上磁化其自由层。

6. 发明授权

US06920684B2 Assembling method for producing a magnetic sensor with high output accuracy 有权
标题翻译：具有高输出精度的磁传感器的组装方法
公开(公告)号：US06920684B2
公开(公告)日：2005-07-26
申请号：US10223891
申请日：2002-08-19
申请人： Yuichi Shonai , Ichiro Tokunaga , Seiji Kikuchi
发明人： Yuichi Shonai , Ichiro Tokunaga , Seiji Kikuchi
IPC分类号： G01R33/09 , G11B5/39 , H01L43/02 , H01L43/08 , G11B5/127 , H04R31/00
CPC分类号： G01R33/09 , Y10T29/49032 , Y10T29/49036 , Y10T29/49043 , Y10T29/49044 , Y10T29/49155 , Y10T29/49162 , Y10T29/49169 , Y10T29/49798
摘要： The fixed layers of all magnetoresistive elements that are formed on the same substrate are magnetized in the same direction. Chips including magnetoresistive elements are cut out individually from the substrate. A magnetic sensor is assembled by combining cut-out chips together with consideration given to the magnetization directions of the fixed layers of the magnetoresistive elements in the chips. In this manner, the fixed layers of the magnetoresistive elements are magnetized by a sufficiently strong magnetic field for magnetization, whereby an output signal having a large absolute value is obtained from the magnetoresistive elements.
摘要翻译：形成在同一衬底上的所有磁阻元件的固定层在相同方向上被磁化。包括磁阻元件的芯片从基板分别切出。考虑到芯片中的磁阻元件的固定层的磁化方向考虑，将切出的芯片组合在一起组装磁性传感器。以这种方式，磁阻元件的固定层被足够强的磁场磁化，从而从磁阻元件获得绝对值大的输出信号。

7. 发明授权

US06640652B2 Rotation angle sensor capable of accurately detecting rotation angle 失效
标题翻译：旋转角度传感器能够精确检测旋转角度
公开(公告)号：US06640652B2
公开(公告)日：2003-11-04
申请号：US10263887
申请日：2002-10-02
申请人： Seiji Kikuchi , Masao Kasashima , Ichiro Tokunaga
发明人： Seiji Kikuchi , Masao Kasashima , Ichiro Tokunaga
IPC分类号： G01L302
CPC分类号： G01D5/145
摘要： When shape anisotropy energy (H) of giant magnetoresistive elements (GMR elements) is expressed by H=A*Js*(Br/&pgr;) using saturation magnetization Js of a free magnetic layer and remanent magnetic flux density Br, A is set within a range of −350
摘要翻译：当使用自由磁性层的饱和磁化强度Js和剩余磁通密度Br的H = A * Js *（Br / pi）表示巨磁阻元件（GMR元件）的形状各向异性能量（H）时，A设定在 -350

8. 发明授权

US4733071A Optical encoder with variable fiber/phase angle adjustment 失效
标题翻译：具有可变光纤/相位角调整的光学编码器
公开(公告)号：US4733071A
公开(公告)日：1988-03-22
申请号：US45199
申请日：1987-04-30
申请人： Ichiro Tokunaga
发明人： Ichiro Tokunaga
IPC分类号： G01D5/36 , G01D5/30 , G01D5/347 , G01D5/34
CPC分类号： G01D5/347
摘要： An optical encoder comprises a sensor head provided with a light emission portion and first and second light reception portions sandwiching the light emission portion therebetween, and a code member on which a plurality of reflective portions are formed at a predetermined pitch, the sensor head being arranged such that the first light reception portion, the light emission portion, and the second light reception portion successively face the code member with respect to the direction of movement of the reflective portions of the code member, and such that an azimuth angle of the light emission and light reception portions with respect to the direction of movement of the reflection portions of the code member can be changed, whereby two output having a predetermined phase difference can be obtained by suitably setting the azimuth angle of the light emission and light reception portions.
摘要翻译：光学编码器包括设置有发光部分的传感器头和夹在其间的发光部分的第一和第二光接收部分，以及以预定间距形成有多个反射部分的代码部件，传感器头部布置使得第一光接收部分，发光部分和第二光接收部分相对于代码部件的反射部分的移动方向依次面对代码部件，并且使得发光的方位角并且可以改变相对于代码部件的反射部分的移动方向的光接收部分，由此通过适当地设置发光和光接收部分的方位角，可以获得具有预定相位差的两个输出。

9. 发明授权

US4684210A Light transmission device 失效
标题翻译：光传输装置
公开(公告)号：US4684210A
公开(公告)日：1987-08-04
申请号：US698562
申请日：1985-02-06
申请人： Hiroshi Matsunaga , Yoji Shimojima , Ichiro Tokunaga , Kosei Obata
发明人： Hiroshi Matsunaga , Yoji Shimojima , Ichiro Tokunaga , Kosei Obata
IPC分类号： G10H1/18 , G02B6/42 , G10H1/36 , G10H7/00 , G02B7/26
CPC分类号： G02B6/4292
摘要： Discloded is a light transmission device in which a plug is elastically urged toward an E-O converter element by a plug urging means provided between the plug and a receptacle of a light transfer device and in which a spacer is provided between the plug and the E-O converter element so that the end surface of the plug and the E-O converter element are separated from each other by a predetermined distance.
摘要翻译： Discloed是一种光传输装置，其中通过设置在插头和光传输装置的插座之间的插头推动装置将插头弹性地推向EO转换器元件，并且其中在插头和EO转换器元件之间设置间隔件使得插头和EO转换器元件的端面彼此分开预定距离。

10. 发明授权

US4617460A Optical fiber sensor having shaped ends 失效
标题翻译：具有成形端的光纤传感器
公开(公告)号：US4617460A
公开(公告)日：1986-10-14
申请号：US599944
申请日：1984-04-13
申请人： Ichiro Tokunaga , Hiroshi Matsunaga , Yoji Shimojima
发明人： Ichiro Tokunaga , Hiroshi Matsunaga , Yoji Shimojima
IPC分类号： G02B6/00 , G01B11/00 , G01B11/02 , G02B6/02 , H01J5/10
CPC分类号： G01B11/00 , G01B11/026
摘要： In an optical fiber sensor comprising an optical fiber coupled with a light emission element and another optical fiber coupled with a light receiving element, end portions of the optical fibers other than those coupled with the aforementioned elements being arranged side by side and joined together in a closely contacting relation with the end surfaces of the optical fibers placed in opposition to a slit member to be detected such that the arranged direction of the optical fibers is aligned with a shifting direction of the slit member; the end portions of the optical fibers are formed into a flat configuration and joined together such that the flat side surfaces of the two fibers are brought into a surface contacting relation.
摘要翻译：在包括与光发射元件耦合的光纤和与光接收元件耦合的另一光纤的光纤传感器中，除了与上述元件耦合的光纤之外的光纤的端部被并排布置并且在一个与被检测的狭缝部件相对配置的光纤的端面紧密接触，使得光纤的布置方向与狭缝部件的移动方向对齐; 光纤的端部形成为扁平构造并且接合在一起，使得两个光纤的平坦侧表面成为表面接触关系。

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