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1. 发明授权

US06211669B1 Magnetic detector with improved noise resistance characteristics 有权
标题翻译：磁性探测器具有改进的抗噪声特性
公开(公告)号：US06211669B1
公开(公告)日：2001-04-03
申请号：US09175414
申请日：1998-10-20
申请人： Masahiro Yokotani , Izuru Shinjo , Yasuyoshi Hatazawa , Naoki Hiraoka
发明人： Masahiro Yokotani , Izuru Shinjo , Yasuyoshi Hatazawa , Naoki Hiraoka
IPC分类号： G01R3309
CPC分类号： G01D5/147 , B82Y25/00 , G01R33/093
摘要： Disclosed is a magnetic detector in which a GMR device is operated within the limited range of a magnetic field so as to optimize changes in resistance value of the GMR device and to improve noise resistance. The magnetic detector comprises a magnet (4) for generating a magnetic field, a rotary member (2) of magnetic material arranged with a predetermined gap left relative to the magnet and provided with projections capable of changing the magnetic field generated by the magnet, and a giant magnetoresistance device (3) of which resistance value is changed depending on the magnetic field changed by the rotary member of magnetic material. The giant magnetoresistance device is arranged in such a position with a predetermined gap relative to the magnetic field generating means that the giant magnetoresistance device is subject to a bias magnetic field applied with the intensity of magnetic field in a predetermined range, e.g., 100±150 [Oe], where the giant magnetoresistance device exhibits a high resistance change rate.
摘要翻译：公开了一种磁检测器，其中GMR器件在磁场的有限范围内操作，以便优化GMR器件的电阻值的变化并改善抗噪声性。磁检测器包括用于产生磁场的磁体（4），磁性材料的旋转部件（2），相对于磁体布置有预定的间隙，并且具有能够改变由磁体产生的磁场的突起，以及电阻值根据由磁性材料的旋转构件变化的磁场而变化的巨磁阻装置（3）。巨磁电阻装置相对于磁场发生装置以预定的间隔布置在这样的位置，巨磁电阻装置经受施加有预定范围的磁场强度的偏置磁场，例如100±150 [Oe]，其中巨磁电阻器件表现出高电阻变化率。

2. 发明授权

US06661221B2 Magnetic field sensing element and device having magnetoresistance element and integrated circuit formed on the same substrate 有权
公开(公告)号：US06661221B2
公开(公告)日：2003-12-09
申请号：US10162180
申请日：2002-06-05
申请人： Motohisa Taguchi , Izuru Shinjo , Yuji Kawano , Tatsuya Fukami , Kazuhiko Tsutsumi , Yuuichi Sakai , Naoki Hiraoka , Yasuyoshi Hatazawa
发明人： Motohisa Taguchi , Izuru Shinjo , Yuji Kawano , Tatsuya Fukami , Kazuhiko Tsutsumi , Yuuichi Sakai , Naoki Hiraoka , Yasuyoshi Hatazawa
IPC分类号： H01L4308
CPC分类号： G01R33/09
摘要： A magnetic field sensing element comprises an underlayer formed on a substrate, a giant magnetoresistance element formed on the underlayer for detecting a change in a magnetic field, and an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in a magnetic field detected by the giant magnetoresistance element, wherein the giant magnetoresistance element and the integrated circuit are formed on the same surface.

3. 发明授权

US5952824A Magnetic detecting apparatus with giant magnetoresistive sensing element and level shifting waveform processing circuit 失效
标题翻译：具有巨磁阻检测元件和电平移位波形处理电路的磁检测装置
公开(公告)号：US5952824A
公开(公告)日：1999-09-14
申请号：US895415
申请日：1997-07-16
申请人： Izuru Shinjo , Yasuyoshi Hatazawa , Naoki Hiraoka , Yutaka Ohashi
发明人： Izuru Shinjo , Yasuyoshi Hatazawa , Naoki Hiraoka , Yutaka Ohashi
IPC分类号： G01P3/488 , G01B7/00 , G01B7/30 , G01D5/14 , G01D5/16 , G01D5/20 , G01D5/245 , G01R33/09 , G08C17/04 , H02H9/04 , H03K5/01 , G01P7/481
CPC分类号： G01R33/093 , B82Y25/00 , G01D5/147
摘要： A magnetic detecting apparatus is capable of performing accurate waveform processing without being affected by noise signals or the like, the level shifting circuit thereof having a fixed voltage shift so as to be free of varying amplitudes of analog signals. Waveform shaping circuitry for turning an analog signal detected from a giant magnetoresistive element into a pulse signal includes: the level shifting circuit for generating an amplified voltage (V1) of analog signals and a voltage (V2) which is higher than the voltage (V1) and a voltage (V3) which is lower than the voltage (V1); a circuit which alternately retains the minimum value of the voltage (V2) and the maximum value of the voltage (V3) as a reference voltage; and a comparator circuit which compares a voltage resulting from adding a hysteresis to the voltage (V1) with the reference voltage and issues a pulse signal. The level shifting circuit is constituted by resistors inserted between the output terminal of the voltage (V1) and the output terminals of the voltages (V2, V3), and constant-current circuits connected in series with the resistors.
摘要翻译：磁检测装置能够进行精确的波形处理而不受噪声信号等的影响，其电平移位电路具有固定的电压偏移，以便没有变化的模拟信号幅度。用于将从巨磁阻元件检测的模拟信号转换成脉冲信号的波形整形电路包括：用于产生模拟信号的放大电压（V1）的电平移位电路和高于电压（V1）的电压（V2）和低于电压（V1）的电压（V3）; 交替地保持电压（V2）的最小值和电压（V3）的最大值作为参考电压的电路; 以及比较器电路，其将由滞后增加的电压与参考电压（V1）进行比较，并发出脉冲信号。电平移动电路由插入在电压（V1）的输出端和电压（V2，V3）的输出端之间的电阻和与电阻串联连接的恒流电路构成。

4. 发明授权

US06326779B1 Magnetic detector having separate base and connector units and production process therefor 有权
标题翻译：磁性检测器具有单独的基座和连接器单元及其制造工艺
公开(公告)号：US06326779B1
公开(公告)日：2001-12-04
申请号：US09172079
申请日：1998-10-14
申请人： Izuru Shinjo , Takuji Nada , Yasuyoshi Hatazawa , Naoki Hiraoka
发明人： Izuru Shinjo , Takuji Nada , Yasuyoshi Hatazawa , Naoki Hiraoka
IPC分类号： G01B730
CPC分类号： G01R33/09
摘要： A magnetic detector having high productivity is provided by producing a connector and a base as separate units, electrically interconnecting them, forming a cut-out portion in a press-in portion of the base, and injecting a thermosetting resin adhesive into a whole case. The case also has a recess portion that prevents excess injected resin from leaking to the outside of the case. The structure of the base also allows for easier injection of resin and simplified connection of the magnetic resistance element to the base.
摘要翻译：通过制造连接器和基座作为分离单元，电连接它们，在基座的压入部分形成切口部分，并将热固性树脂粘合剂注入整个壳体中来提供高生产率的磁性检测器。壳体还具有防止多余注入树脂泄漏到壳体外部的凹陷部分。基座的结构还允许更容易地注入树脂并简化磁阻元件与基座的连接。

5. 发明授权

US06239595B1 Magnetic field sensing element 有权
标题翻译：磁场感应元件
公开(公告)号：US06239595B1
公开(公告)日：2001-05-29
申请号：US09196348
申请日：1998-11-19
申请人： Izuru Shinjo , Yasuyoshi Hatazawa , Tatsuya Fukami , Motohisa Taguchi , Kazuhiko Tsutsumi , Yuuichi Sakai , Naoki Hiraoka
发明人： Izuru Shinjo , Yasuyoshi Hatazawa , Tatsuya Fukami , Motohisa Taguchi , Kazuhiko Tsutsumi , Yuuichi Sakai , Naoki Hiraoka
IPC分类号： G01R3302
CPC分类号： G01R33/09
摘要： A magnetic field sensing element comprises an underlayer formed on a substrate, a giant magnetic resistance element formed on the underlayer for detecting a change in a magnetic field, and an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in a magnetic field detected by the giant magnetic resistance element, wherein the giant magnetic resistance element and the integrated circuit are formed on the same surface.
摘要翻译：磁场感测元件包括形成在基板上的底层，形成在用于检测磁场变化的底层上的巨磁阻元件和形成在基板上的集成电路，用于基于基板上的变化执行预定的算术处理由巨磁电阻元件检测的磁场，其中巨磁阻元件和集成电路形成在同一表面上。

6. 发明授权

US06426620B1 Magnetic field sensing element and device having magnetoresistance element and integrated circuit formed on the same substrate 有权
标题翻译：具有形成在同一衬底上的磁阻元件和集成电路的磁场感测元件和器件
公开(公告)号：US06426620B1
公开(公告)日：2002-07-30
申请号：US09307751
申请日：1999-05-10
申请人： Motohisa Taguchi , Izuru Shinjo , Yuji Kawano , Tatsuya Fukami , Kazuhiko Tsutsumi , Yuuichi Sakai , Naoki Hiraoka , Yasuyoshi Hatazawa
发明人： Motohisa Taguchi , Izuru Shinjo , Yuji Kawano , Tatsuya Fukami , Kazuhiko Tsutsumi , Yuuichi Sakai , Naoki Hiraoka , Yasuyoshi Hatazawa
IPC分类号： G01B700
CPC分类号： G01R33/09
摘要： A magnetic field sensing element comprises an underlayer formed on a substrate, a giant magnetoresistance element formed on the underlayer for detecting a change in a magnetic field, and an integrated circuit formed on the substrate for carrying out predetermined arithmetic processing based on a change in a magnetic field detected by the giant magnetoresistance element, wherein the giant magnetoresistance element and the integrated circuit are formed on the same surface.
摘要翻译：磁场感测元件包括形成在基板上的底层，形成在用于检测磁场变化的底层上的巨磁阻元件，以及形成在基板上的集成电路，用于基于基板上的变化执行预定的算术处理由巨磁阻元件检测的磁场，其中巨磁电阻元件和集成电路形成在同一表面上。

7. 发明授权

US07045997B2 Magnetic detection apparatus 有权
标题翻译：磁检测装置
公开(公告)号：US07045997B2
公开(公告)日：2006-05-16
申请号：US10705959
申请日：2003-11-13
申请人： Masahiro Yokotani , Izuru Shinjo , Naohiro Mishiro , Naoki Hiraoka
发明人： Masahiro Yokotani , Izuru Shinjo , Naohiro Mishiro , Naoki Hiraoka
IPC分类号： G01B7/30
CPC分类号： G01D5/147 , G01D5/24438 , G01R33/09
摘要： A magnetic detection apparatus can accurately detect the rotational position of a magnetic moving member even when intervals between adjacent teeth formed thereon and the circumferential width of each tooth itself are both small and when an opposing distance between the magnetic moving member and first and second magnetoresistive segments is large. A processing circuit is arranged apart from the magnetic moving member on a plane thereof, which is formed on its periphery with the teeth. The processing circuit has a bridge circuit including the first magnetoresistive segment and the second magnetoresistive segment. A magnet applies a magnetic field to the first and second magnetoresistive segments, and to the magnetic moving member in a direction of an axis of rotation thereof. The second magnetoelectric conversion element is arranged substantially on a center line passing through the center of the magnet on a line in opposition to the magnetic moving member when viewed along the direction of the axis of rotation of the magnetic moving member, so that a differential output can be obtained from the outputs of the first magnetoelectric conversion element and the second magnetoelectric conversion element.
摘要翻译：磁性检测装置即使在形成在其上的相邻齿之间的间隔和每个齿本身的周向宽度都小的情况下也可以精确地检测磁性移动构件的旋转位置，并且当磁性移动构件与第一和第二磁阻段之间的相对距离很大处理电路与磁性移动构件在其周边上与齿形成的平面上分开配置。处理电路具有包括第一磁阻部分和第二磁阻部分的桥接电路。磁体将磁场施加到第一和第二磁阻部分，并且在其旋转轴线的方向上对磁性移动部件施加磁场。第二磁电转换元件在沿着磁性移动构件的旋转轴线的方向观察时，基本上布置在与磁性移动构件相对的线上通过磁体中心的中心线上，使得差分输出可以从第一磁电转换元件和第二磁电转换元件的输出获得。

8. 发明授权

US06870365B1 Rotation detecting device 有权
标题翻译：旋转检测装置
公开(公告)号：US06870365B1
公开(公告)日：2005-03-22
申请号：US10820753
申请日：2004-04-09
申请人： Masahiro Yokotani , Izuru Shinjo , Naoki Hiraoka
发明人： Masahiro Yokotani , Izuru Shinjo , Naoki Hiraoka
IPC分类号： G01P13/04 , G01B7/30 , G01D5/12 , G01D5/14 , G01D5/16 , G01D5/22
CPC分类号： G01D5/145
摘要： Six magneto-resistance segments are formed by film-forming on a signal processing circuit part consisting of an IC chip and are disposed in a predetermined rotation direction of a magnetic moving body, symmetrically about the centerline of a magnet perpendicular to that rotation direction. Two pairs of magneto-resistance segments, whose pitch centers are positioned symmetrically with respect to the centerline of the magnet, form first and second bridge circuits, and the remaining pair of magneto-resistance segments, which has its pitch center on the centerline of the magnet, forms a third bridge circuit.
摘要翻译：在由IC芯片组成的信号处理电路部分上形成六个磁阻部分，并且以垂直于该旋转方向的磁体的中心线对称地设置在磁性移动体的预定旋转方向上。两对磁阻部分，其间距中心相对于磁体的中心线对称地形成第一和第二桥接电路，剩下的一对磁阻部分在其中心线处具有中心线磁铁，形成第三桥电路。

9. 发明授权

US06339324B1 Rotating magnetic object motion sensor with unbalanced bias 有权
标题翻译：具有不平衡偏置的旋转磁体运动传感器
公开(公告)号：US06339324B1
公开(公告)日：2002-01-15
申请号：US09659452
申请日：2000-09-11
申请人： Hiroshi Sakanoue , Noriaki Hayashi , Izuru Shinjo , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
发明人： Hiroshi Sakanoue , Noriaki Hayashi , Izuru Shinjo , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
IPC分类号： G01P344
CPC分类号： G01P3/487
摘要： The invention provides a magnetic object motion sensor which can operate with high accuracy not only when a magnetic object moves at high speeds but also even when it moves at low speeds, which can be produced with a greater production tolerance and a greater dimensional tolerance. The magnetic object motion sensor includes: magnetoelectric transducer elements disposed opposite protrusions of a moving magnetic object; a magnet for generating bias magnetic flux toward the magnetoelectric transducer elements; unbalanced bias producing means for producing imbalance in the magnetic field sensitivity between the magnetoelectric transducer elements; a differential amplifier for amplifying in a differential fashion the electric signals output by the magnetoelectric transducer elements; a waveform shaping circuit for converting the differential signal output by the differential amplifier to a pulse signal corresponding to the edges of the magnetic material protrusion; the unbalanced bias producing means producing a difference in the amplitude of the magnetic flux density between that applied to one element of the pair of magnetoelectric transducer elements and that applied to the other element so that the difference in the electric signal level corresponding to the difference in the amplitude of the magnetic flux density becomes greater than the hysteresis of the waveform shaping circuit, thereby, in effect, introducing imbalance in the sensitivity between the magnetoelectric transducer elements.
摘要翻译：本发明提供了一种磁性物体运动传感器，其不仅在磁性物体以高速移动时，而且即使当其以低速移动时也能以高精度进行操作，这可以以更大的制造公差和更大的尺寸公差产生。磁性物体运动传感器包括：与运动的磁性物体相对的突起设置的磁电换能器元件; 用于向磁电换能器元件产生偏磁通的磁体; 用于产生磁电换能器元件之间的磁场灵敏度不平衡的不平衡偏压产生装置; 用于以差分方式放大由电磁换能器元件输出的电信号的差分放大器; 波形整形电路，用于将由差分放大器输出的差分信号转换为对应于磁性材料突起的边缘的脉冲信号; 所述不平衡偏置产生装置产生施加到所述一对磁电换能器元件中的一个元件之间的磁通密度的振幅和施加到另一元件的磁通密度的差异，使得与所述另一元件相对应的电信号电平的差异磁通密度的振幅变得大于波形整形电路的滞后，从而实际上引入了磁电换能器元件之间的灵敏度不平衡。

10. 发明授权

US5821744A Rotation sensor having a simplified and compact structure 失效
标题翻译：旋转传感器具有简化和紧凑的结构
公开(公告)号：US5821744A
公开(公告)日：1998-10-13
申请号：US630584
申请日：1996-04-10
申请人： Izuru Shinjo , Noriaki Hayashi , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
发明人： Izuru Shinjo , Noriaki Hayashi , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
IPC分类号： G01B7/00 , G01B7/30 , G01D5/245 , G01P1/00 , G01P1/02 , G01P3/487 , G01P3/488
CPC分类号： G01P1/026 , B29C45/14655 , G01P1/00 , G01P3/487 , G01P3/488 , Y10T29/4902 , Y10T29/49121 , Y10T29/49158
摘要： A rotation sensor is provided which is inexpensive and has excellent performance, high workability, and high reliability. Specifically, the rotation sensor contains a magnetoelectric conversion device, a base, an insert conductor, a surface mount electrode part, an electronic component, and a connector part. The magnetoelectric conversion device senses a magnetic flux change associated with a rotation of a magnetic rotation body, and the base is made of resin and holds the magnetoelectric conversion device. The insert conductor is insert-molded in the base, and an exposed part of the insert conductor is exposed to a surface of the base. The surface mount electrode part is formed by at least the exposed part of the insert conductor and is connected to the magnetoelectric conversion device. The electronic component is mounted on the surface mount electrode part, and the connector part is formed by using an end of the insert conductor as a terminal electrode.
摘要翻译：提供了一种价格低廉，性能优异，可加工性高，可靠性高的旋转传感器。具体地，旋转传感器包括磁电转换装置，基座，插入导体，表面安装电极部件，电子部件和连接器部件。磁电转换装置感测与磁旋转体的旋转相关联的磁通量变化，并且基座由树脂制成并保持磁电转换装置。插入导体嵌入成型在基座中，并且插入导体的暴露部分暴露于基部的表面。表面安装电极部分至少由插入导体的露出部分形成，并连接到磁电转换装置。电子部件安装在表面安装电极部分上，并且通过使用插入导体的端部作为端子电极来形成连接器部分。

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