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1. 发明授权

US06222361B1 Position detecting device using varying width magneto-resistive effect sensor 有权
标题翻译：使用变宽度磁阻效应传感器的位置检测装置
公开(公告)号：US06222361B1
公开(公告)日：2001-04-24
申请号：US09204205
申请日：1998-12-02
申请人： Tadahiko Shimano , Masaaki Kusumi
发明人： Tadahiko Shimano , Masaaki Kusumi
IPC分类号： G01B714
CPC分类号： G01R33/09
摘要： A magneto-resistive effect sensor capable of outputting a sufficient output of optimum characteristics even if a magnetized surface of a magnetized material is curved, arcuately- or polygonally-shaped. On the magneto-resistive effect sensor 3, plural magnetically sensitive portions 12a to 12d of the same shape are formed and arrayed parallel to one another, while being electrically connected in series to permit the current i to flow through the electrically connected magnetically sensitive portions. The magnetically sensitive portion 12a is made up of a mid portion 15a having a width w1 and ends having a width w2. A signal magnetic field of different strengths is applied from the magnetized material along the current flowing direction. The widths w1 and w2 differ with the strengths of the applied signal magnetic field and are of a ratio such that w1:w2=2:3. The strength of the signal magnetic field is high to give high resistance in a narrow-width area of the magnetically sensitive portion 12a, while being low to give low resistance in a broad-width portion of the magnetically sensitive portion 12a, such that the magneto-resistive effect sensor in its entirety can develop a sufficient output with an optimum S/N ratio.
摘要翻译：一种磁阻效应传感器，即使磁化材料的磁化表面弯曲，弧形或多边形，也能够输出足够的最佳特性输出。在磁阻效应传感器3上，形成相同形状的多个磁敏部12a〜12d并串联排列，同时串联电连接，使得电流i流过电连接的磁敏部。磁敏部分12a由具有宽度w1的中间部分15a和具有宽度w2的端部组成。从磁化材料沿电流流动方向施加不同强度的信号磁场。宽度w1和w2随着施加的信号磁场的强度而不同，并且具有使得w1：w2 = 2：3的比率。信号磁场的强度高，在磁敏部分12a的窄宽度区域中产生高电阻，同时在磁敏部分12a的宽幅部分中具有低电阻，使得磁敏部分12a 电阻效应传感器整体可以产生具有最佳S / N比的足够的输出。

2. 发明授权

US07965074B2 Position sensor and bias magnetic field generating device 有权
标题翻译：位置传感器和偏置磁场产生装置
公开(公告)号：US07965074B2
公开(公告)日：2011-06-21
申请号：US12255015
申请日：2008-10-21
申请人： Nobuhiro Nakagawa , Gunichi Nakamura , Masaaki Kusumi
发明人： Nobuhiro Nakagawa , Gunichi Nakamura , Masaaki Kusumi
IPC分类号： G01B7/14
CPC分类号： G01D5/145 , G01D5/24438 , G01D5/2455
摘要： Disclosed herein is a position sensor including, a magnetic recording medium including two incremental layers and an absolute layer, the absolute layer provided between the incremental layers, each of the layers having magnetic information recorded therein, and a magnetic detection section including three magnetoresistance effect devices opposite to the layers of the magnetic recording medium, being moved relative to the magnetic recording medium in the extending direction of the layers, and being operative to detect the magnetic information in the layers by the magnetoresistance effect devices.
摘要翻译：本文公开了一种位置传感器，包括：包括两个增量层的磁记录介质和绝对层，设置在增量层之间的绝对层，其中记录有磁信息的每个层，以及包括三个磁阻效应器件的磁检测部分与磁记录介质的层相对，在层的延伸方向上相对于磁记录介质移动，并且可操作以由磁阻效应器件检测层中的磁信息。

3. 发明授权

US5943639A Displacement detection apparatus including an error correction system 失效
标题翻译：位移检测装置，包括纠错系统
公开(公告)号：US5943639A
公开(公告)日：1999-08-24
申请号：US545504
申请日：1995-10-19
申请人： Takashi Tanaka , Masaaki Kusumi
发明人： Takashi Tanaka , Masaaki Kusumi
IPC分类号： G01B7/00 , G01D5/244 , G01D5/245 , G01B7/02
CPC分类号： G01D5/24452 , G01D5/24404 , G01D5/2448 , G01D5/2449
摘要： A displacement detecting apparatus includes an error correcting circuit through which a pair of sine wave signals detected by a detecting head unit are corrected. A signal detecting circuit receives the pair of sine wave signals whose phases are shifted by about 90.degree., and detects a magnitude of one of the two sine wave signal when the other one of the two sine wave signals crosses with a reference voltage level. The error correcting circuit calculates an error correction amount of each sine wave signal according to the detected magnitude of the signal and eliminates the calculated error correction amount from the signals. Therefore, the sine wave signals of position information are accurately corrected in direct-current component, voltage ratio and phase difference.
摘要翻译：位移检测装置包括纠错电路，校正由检测头单元检测到的一对正弦波信号。信号检测电路接收相位偏移约90°的一对正弦波信号，并且当两个正弦波信号中的另一个与参考电压电平相交时，检测两个正弦波信号中的一个的幅度。误差校正电路根据检测到的信号幅度来计算每个正弦波信号的纠错量，并从信号中消除计算出的误差校正量。因此，在直流分量，电压比和相位差中精确地校正位置信息的正弦波信号。

4. 发明授权

US5909115A Position detecting apparatus employing magnetoresistance effect elements connected in series 失效
标题翻译：使用串联连接的磁阻效应元件的位置检测装置
公开(公告)号：US5909115A
公开(公告)日：1999-06-01
申请号：US843788
申请日：1997-04-21
申请人： Hiroshi Kano , Masaaki Kusumi
发明人： Hiroshi Kano , Masaaki Kusumi
IPC分类号： G01D5/245 , G01B7/00 , G01D5/14 , G01D5/16 , G11B5/39 , G01B7/14 , G01R33/09
CPC分类号： B82Y10/00 , B82Y25/00 , G01B7/003 , G01D5/145 , G01D5/2451 , G11B2005/3996
摘要： A position detecting apparatus can detect a position with high accuracy even when a relative angle between a magnetic recording medium and a magnetic detecting portion is fluctuated, when an angle of the magnetic recording medium is partly fluctuated or even when an ambient temperature and a temperature of the magnetic detecting portion are fluctuated. The position detecting apparatus includes a magnetic recording medium (1) in which magnetic information is recorded and a magnetic detecting portion (2) movable relative to the magnetic recording medium (1) and which detects the magnetic information recorded on the magnetic recording medium (1). The magnetic detecting portion (2) includes a plurality of, for example, m magnetoresistance effect elements (3) with an artificial grid film structure wherein conductive layers (3a) and magnetic layers (3b) are alternately laminated. The magnetoresistance effect elements (3.sub.1, 3.sub.2, . . . , 3.sub.m) are disposed at a predetermined pitch with respect to the relative moving direction of the magnetic recording medium. The magnetoresistance effect elements (3.sub.1, 3.sub.2, . . . , 3.sub.m) are connected in series so as to function as a single magnetic variable resistor (4). The direction of a current flowing in the magnetoresistance effect elements (3.sub.1, 3.sub.2, . . . , 3.sub.m) relative to the recording longitudinal direction of the magnetic information recorded on the magnetic recording medium (1) have angles other than a right angle.
摘要翻译：即使当磁记录介质和磁检测部分之间的相对角度波动时，位置检测装置也可以高精度地检测位置，当磁记录介质的角度部分波动时，甚至当环境温度和磁检测部分波动。位置检测装置包括记录有磁信息的磁记录介质（1）和相对于磁记录介质（1）可移动的磁检测部分（2），并且检测记录在磁记录介质（1）上的磁信息）。磁检测部分（2）包括多个例如具有交替层叠导电层（3a）和磁性层（3b）的人造网格膜结构的m个磁阻效应元件（3）。磁阻效应元件（31,32 ... ... 3m）相对于磁记录介质的相对移动方向以预定间距设置。磁阻效应元件（31,32，...，3m）串联连接起来，起到单个磁性可变电阻器（4）的作用。在磁阻效应元件（31,32 ... ... 3m）中流动的电流的方向相对于记录在磁记录介质（1）上的磁信息的记录纵向具有除了直角以外的角度。

5. 发明授权

US5243280A Magnetic sensor and position detector 失效
标题翻译：磁传感器和位置检测器
公开(公告)号：US5243280A
公开(公告)日：1993-09-07
申请号：US852727
申请日：1992-03-17
申请人： Masaaki Kusumi
发明人： Masaaki Kusumi
IPC分类号： G01B7/00 , G01D5/14 , G01D5/16 , G01R33/09
CPC分类号： G01D5/145 , G01B7/003 , G01R33/09
摘要： A magnetic sensor is disposed in an opposing relation to a magnetic scale in which a flat surface scale base made of a glass is plated by a magnetic material and a resultant plated layer is magnetized at a constant grating pitch. The magnetic sensor includes two magnetoresistance effect element groups disposed symmetrically with respect to a common central line. Since the surface of the magnetic scale is smooth, a clearance between the magnetic sensor and the magnetic scale can be kept substantially constant. When the magnetic sensor is moved in an opposing relation to the magnetic scale, a rise of temperature in the magnetoresistance effect elements is compensated for by the above symmetrical layout of the two magnetoresistance effect element groups. Therefore, when the magnetic sensor is moved over the magnetic scale in one direction and in the opposite direction, a dc fluctuation component in an output circuit can be reduced and the output circuit can generate a sine wave output of a constant amplitude having less waveform distortion.
摘要翻译：磁传感器以与磁性标尺相对的方式设置，其中由玻璃制成的平坦表面刻度尺由磁性材料镀覆，并且所得的镀层以恒定的光栅间距被磁化。磁传感器包括相对于公共中心线对称设置的两个磁阻效应元件组。由于磁性刻度表面光滑，磁传感器和磁标尺之间的间隙可保持基本恒定。当磁传感器以与磁标相反的方式移动时，通过两个磁阻效应元件组的上述对称布局来补偿磁阻效应元件中的温度上升。因此，当磁传感器在一个方向和相反方向上移动到磁标尺上时，可以减小输出电路中的直流波动分量，并且输出电路可以产生具有较小波形失真的恒定振幅的正弦波输出。

6. 发明申请

US20090116151A1 POSITION SENSOR AND BIAS MAGNETIC FIELD GENERATING DEVICE 有权
标题翻译：位置传感器和偏置磁场产生装置
公开(公告)号：US20090116151A1
公开(公告)日：2009-05-07
申请号：US12255015
申请日：2008-10-21
申请人： Nobuhiro Nakagawa , Gunichi Nakamura , Masaaki Kusumi
发明人： Nobuhiro Nakagawa , Gunichi Nakamura , Masaaki Kusumi
IPC分类号： G11B5/33
CPC分类号： G01D5/145 , G01D5/24438 , G01D5/2455
摘要： Disclosed herein is a position sensor including, a magnetic recording medium including two incremental layers and an absolute layer, the absolute layer provided between the incremental layers, each of the layers having magnetic information recorded therein, and a magnetic detection section including three magnetoresistance effect devices opposite to the layers of the magnetic recording medium, being moved relative to the magnetic recording medium in the extending direction of the layers, and being operative to detect the magnetic information in the layers by the magnetoresistance effect devices.
摘要翻译：本文公开了一种位置传感器，包括：包括两个增量层的磁记录介质和绝对层，设置在增量层之间的绝对层，其中记录有磁信息的每个层，以及包括三个磁阻效应器件的磁检测部分与磁记录介质的层相对，在层的延伸方向上相对于磁记录介质移动，并且可操作以由磁阻效应器件检测层中的磁信息。

7. 发明授权

US06693565B2 Position transducer 有权
标题翻译：位置传感器
公开(公告)号：US06693565B2
公开(公告)日：2004-02-17
申请号：US10371929
申请日：2003-02-21
申请人： Masaaki Kusumi , Michio Okano , Shigeru Ishimoto , Mitsuru Ohno , Yasuo Nekado
发明人： Masaaki Kusumi , Michio Okano , Shigeru Ishimoto , Mitsuru Ohno , Yasuo Nekado
IPC分类号： H03M130
CPC分类号： G01D5/2455 , G01D5/24409 , G01D5/2492
摘要： There is provided a position transducer (1) capable of accurately detecting an n-bit code by n ABS detectors from one ABS track. When an INC value is under j or over k, signal output from each of the ABS detectors is binarized based on a threshold h and also based on a threshold l. First, an ABS value decider (24) decides that a bit is “H” when it has been judged as being “H” on the basis of both the thresholds and a bit is “L” when it is has been judged as being “L” on the basis of both the thresholds. When the INC value is under j, a lower bit has the same code as that of the deiced bit. So, the ABS value decider (24) decides that the lower bit is “H” or “L”. On the other hand, when the INC value is over k, an upper bit has the same code as the decided code. Thus, the ABS value decider (24) decides that the upper bit is “H” or “L”. The ABS value decider (24) decides a yet-to-decide bit to be “L” when a bit adjacent to the bit is “H”, and “H” when the adjacent bit is “L”.
摘要翻译：提供了一个位置传感器（1），能够通过来自一个ABS轨道的n个ABS检测器精确地检测n位代码。当INC值低于j或超过k时，来自每个ABS检测器的信号输出将基于阈值h二值化，并且还基于阈值l。首先，当判断为“H”时，根据两个阈值判断为“H”，当判断为“0”时，ABS值判定器（24）判定为“H” L“。当INC值低于j时，低位与代码位的代码相同。因此，ABS值判定器（24）判定下位为“H”或“L”。另一方面，当INC值超过k时，高位与代码相同。因此，ABS值判定器（24）判定高位是“H”或“L”。当与位相邻的位为“H”时，ABS值判定器（24）将尚未确定的位决定为“L”，当相邻位为“L”时，判定为“H”。

8. 发明授权

US06236200B1 Magnetic metal sensor and method for detecting magnetic metal 失效
标题翻译：磁性金属传感器及磁性金属检测方法
公开(公告)号：US06236200B1
公开(公告)日：2001-05-22
申请号：US09080957
申请日：1998-05-19
申请人： Yasuo Nekado , Masaaki Kusumi
发明人： Yasuo Nekado , Masaaki Kusumi
IPC分类号： G01B714
CPC分类号： H03K17/9505 , G01V3/105
摘要： A magnetic metal sensor having a high response speed and which can detect small-sized metal pieces and can elongate the separation from the metal pieces. A magnetic metal sensor 2 has a core 22 defining a substantially U-shaped open magnetic path and coils 23, 24 of the same polarity mounted on the core 22. A uniform magnetic field along the direction of magnetic sensitivity is applied by a magnet 25 across the coils 24, 24. If magnetic metal approaches to a open magnetic path portion of the core 22 of the magnetic metal sensor 2, the magnetic reluctance of the magnetic circuit formed by the core and air is changed, as a result of which the impedance of the cores 23, 24 is changed. The magnetic metal sensor 2 detects the possible presence of magnetic metal or its displacement based on impedance changes of the paired coils 23, 24.
摘要翻译：一种磁性金属传感器，具有高响应速度，可检测小尺寸的金属片，并可延长与金属片的分离。磁性金属传感器2具有限定基本上U形的开放磁路的芯22和安装在芯22上的相同极性的线圈23,24。沿着磁敏感方向的均匀磁场由磁体25施加线圈24,24。如果磁性金属接近磁性金属传感器2的磁芯22的开放磁路部分，则由磁芯和空气形成的磁路的磁阻改变，结果阻抗的芯23,24被改变。磁性金属传感器2基于成对线圈23,24的阻抗变化来检测磁性金属的可能存在或其位移。

9. 发明授权

US07300712B2 Magnetic sensor and position detector 有权
标题翻译：磁传感器和位置检测器
公开(公告)号：US07300712B2
公开(公告)日：2007-11-27
申请号：US10689754
申请日：2003-10-20
申请人： Masaaki Kusumi , Mitsuru Ohno , Michio Okano , Hideki Nakamori , Touru Sumiya , Akitaka Tsunogae , Tomoyuki Nakada , Teruyuki Miura , Yoshihiko Ohkawara
发明人： Masaaki Kusumi , Mitsuru Ohno , Michio Okano , Hideki Nakamori , Touru Sumiya , Akitaka Tsunogae , Tomoyuki Nakada , Teruyuki Miura , Yoshihiko Ohkawara
IPC分类号： G11B5/127
CPC分类号： G01R33/09 , G01R33/02 , Y10T428/1143 , Y10T428/1164 , Y10T428/1171 , Y10T428/1193 , Y10T428/31721
摘要： In a magnetic sensor (1) including a substrate (10) having a magnetism-sensitive element (11) formed thereon, a hard membrane (14) is formed on the outermost surface, an organic film (13) to relieve the stress caused by the hard membrane (14) is formed under the hard membrane (14), and an inorganic film (12) to relieve the stress caused by the organic film (13) is formed between the organic film (13) and magnetism-sensitive element (11). Also, an intermediate film formed from an element having a large force of bonding to carbon may be formed between the organic film (13) and hard membrane (14). Thus, the magnetic sensor (MR sensor, for example) can be protected against an external shock.
摘要翻译：在包括其上形成有磁敏元件（11）的基板（10）的磁传感器（1）中，在最外表面上形成有硬膜（14），以有效的薄膜（13）来减轻由在所述硬膜（14）的下方形成有所述硬膜（14），在所述有机膜（13）和所述感磁元件（13）之间形成有机膜（13）产生的应力的无机膜（12） 11）。此外，可以在有机膜（13）和硬膜（14）之间形成由具有大的结合力的元素形成的中间膜。因此，可以保护磁传感器（例如MR传感器）免受外部冲击。

10. 发明授权

US06772088B2 Position transducer 有权
标题翻译：位置传感器
公开(公告)号：US06772088B2
公开(公告)日：2004-08-03
申请号：US10371875
申请日：2003-02-21
申请人： Yasuo Nekado , Michio Okano , Shigeru Ishimoto , Mitsuru Ohno , Masaaki Kusumi
发明人： Yasuo Nekado , Michio Okano , Shigeru Ishimoto , Mitsuru Ohno , Masaaki Kusumi
IPC分类号： G06F1500
CPC分类号： G01D5/2492
摘要： A position transducer capable of accurately detecting an n-bit code by a small number of ABS detectors when there is provided one ABS track. In an ABS head, the ABS detectors 101 to 10n+m are disposed for a distance &lgr;1 between the first ABS detector 101 and (n+m)th ABS detector 10n+m to satisfy a requirement (n−1)&lgr;+2&dgr;
摘要翻译：当提供一个ABS轨道时，能够通过少量ABS检测器精确地检测n位代码的位置传感器。在ABS头中，ABS检测器101〜10n + m设置在第一ABS检测器101和第（n + m）ABS检测器10n + m之间的距离λ1以满足要求（n-1）λ+ 2delta < LAMBDA1和两个连续的ABS检测器之间的距离λ2以满足要求2delta

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