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1.发明授权
公开(公告)号：US5990417A
公开(公告)日：1999-11-23
申请号：US257769
申请日：1994-06-06
CPC分类号： H05K9/0088 , H01F17/06 , H01F2017/065
摘要： Electromagnetic noise absorbing material and filter, which are small, light, and effective even with respect to unwanted electromagnetic waves of a few hundred MHz or more, are provided. A small and flexible electromagnetic noise filter cable and tape-shaped electromagnetic noise filter, as well as a manufacturing method and manufacturing apparatus therefor, are also provided. The electromagnetic noise absorbing material has a thickness or particle diameter of the alloy magnetic substance which is within a range of from 1/10 to 10 times the skin depth thereof, and thereby, a large eddy current loss can be generated, so that it is possible to manufacture electromagnetic noise filters having various shapes, which are small, light, and which realize a large electromagnetic noise suppression effect as a result of eddy current loss, and these possess a large relative magnetic permeability even at levels of a few hundred MHz or more. According to the thin film manufacturing method and apparatus, it is possible to easily manufacture an electromagnetic noise absorbing material having small hysteresis, possessing a hard axis of uni-axial magnetic anisotropy, which is superior in high-frequency response, and has a large electromagnetic noise suppression effect.
摘要翻译： 提供电磁噪声吸收材料和滤波器，其即使对于几百MHz或更多的不需要的电磁波也是小的，轻的和有效的。 还提供了一种小而灵活的电磁噪声滤波器电缆和带状电磁噪声滤波器以及其制造方法和制造装置。 电磁噪声吸收材料的合金磁性物质的厚度或粒径在+ E，fra 1/10 + EE至其10倍的皮肤深度的范围内，因此可以大的涡流损耗 从而可以制造小型，轻型的各种形状的电磁噪声滤波器，并且由于涡电流损耗而实现大的电磁噪声抑制效果，并且这些具有相对磁导率甚至相当高的水平 几百MHz以上。 根据薄膜制造方法和装置，可以容易地制造具有低磁滞的电磁噪声吸收材料，具有高频响应性优异的单轴磁各向异性的硬轴，并且具有大的电磁 噪音抑制效果。
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2.发明授权
公开(公告)号：US5705926A
公开(公告)日：1998-01-06
申请号：US631402
申请日：1996-04-12
摘要： In a magnetic field sensing method in accordance with the invention of the present application, a magnetic sensor comprising a conductor and at least one magnetic material provided on any of the surfaces of this conductor, is employed. This magnetic sensor is disposed in the vicinity of an external magnetic field which is to be sensed, and by means of supplying a high frequency current to this conductor, the impedance of the conductor changes in accordance with the external magnetic field, and based on this, the external magnetic field is sensed.
摘要翻译： 在根据本申请的本发明的磁场感测方法中，使用包括导体和设置在该导体的任何表面上的至少一个磁性材料的磁传感器。 该磁传感器设置在要感测的外部磁场附近，并且通过向该导体提供高频电流，导体的阻抗根据外部磁场而变化，并且基于该 ，感测到外部磁场。
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3.发明授权Magnetic sensor and magnetic field sensing method using said magnetic sensor based on impedance changes of a high frequency excited conductor 失效基于高频激励导体的阻抗变化，使用所述磁传感器的磁传感器和磁场感测方法
公开(公告)号：US5811971A
公开(公告)日：1998-09-22
申请号：US593387
申请日：1996-01-29
摘要： In a magnetic field sensing method in accordance with the invention of the present application, a magnetic sensor comprising a conductor and at least one magnetic material provided on any of the surfaces of this conductor, is employed. This magnetic sensor is disposed in the vicinity of an external magnetic field which is to be sensed, and by means of supplying a high frequency current to this conductor, the impedance of the conductor changes in accordance with the external magnetic field, and based on this, the external magnetic field is sensed.
摘要翻译： 在根据本申请的本发明的磁场感测方法中，使用包括导体和设置在该导体的任何表面上的至少一个磁性材料的磁传感器。 该磁传感器设置在要感测的外部磁场附近，并且通过向该导体提供高频电流，导体的阻抗根据外部磁场而变化，并且基于该 ，感测到外部磁场。
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4.发明授权
公开(公告)号：US5734267A
公开(公告)日：1998-03-31
申请号：US593386
申请日：1996-01-29
摘要： In a magnetic field sensing method in accordance with the invention of the present application, a magnetic sensor comprising a conductor and at least one magnetic material provided on any of the surfaces of this conductor, is employed. This magnetic sensor is disposed in the vicinity of an external magnetic field which is to be sensed, and by means of supplying a high frequency current to this conductor, the impedance of the conductor changes in accordance with the external magnetic field, and based on this, the external magnetic field is sensed.
摘要翻译： 在根据本申请的本发明的磁场感测方法中，使用包括导体和设置在该导体的任何表面上的至少一个磁性材料的磁传感器。 该磁传感器设置在要感测的外部磁场附近，并且通过向该导体提供高频电流，导体的阻抗根据外部磁场而变化，并且基于该 ，感测到外部磁场。
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公开(公告)号：US4226018A
公开(公告)日：1980-10-07
申请号：US14718
申请日：1979-02-23
CPC分类号： G11B5/1871 , G11B5/3163 , Y10T29/49041 , Y10T29/49044
摘要： An improved method for manufacturing a floating type thin film magnetic head, which comprises the steps of depositing numerous thin film transducers in a matrix form on a lapped plain surface of core block stock; cutting the core block stock into a plural number of narrow parallelepiped core blocks each containing a row of deposited thin film transducers; placing a thin patterned mask on the lapped recording medium-facing plane surface of each slender core block; ion-etching the tape-facing plane of each narrow core block by irradiating accelerated ions of argon gas through the patterned mask to provide an air-bearing surfaces for the respective magnetic heads; and cutting up the respective processed narrow core blocks into individual magnetic heads.
摘要翻译： 一种用于制造浮动型薄膜磁头的改进方法，包括以下步骤：将多个薄片换能器以矩阵形式沉积在芯块坯料的重叠平坦表面上; 将芯块坯料切割成多个窄平行六面体芯块，每个芯体块包含一排沉积的薄膜换能器; 将薄的图案化掩模放置在每个细长芯块的重叠记录介质面向平面上; 通过将加热的氩气离子通过图案化掩模照射来蚀刻每个窄芯块的面向磁带的平面，以为相应的磁头提供空气轴承表面; 并将各个加工的窄芯块切割成独立的磁头。
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公开(公告)号：US4860276A
公开(公告)日：1989-08-22
申请号：US97560
申请日：1987-09-16
申请人： Hiroo Ukita , Yoshitada Katagiri , Renshi Sawada , Yuuji Uenishi , Yoshihiro Isomura , Tomoyuki Toshima , Keisuke Mise
发明人： Hiroo Ukita , Yoshitada Katagiri , Renshi Sawada , Yuuji Uenishi , Yoshihiro Isomura , Tomoyuki Toshima , Keisuke Mise
IPC分类号： G11B7/12 , G11B7/125 , G11B7/13 , H01S3/00 , H01S5/00 , H01S5/026 , H01S5/065 , H01S5/10 , H01S5/14 , H01S5/40
CPC分类号： G11B7/127 , G11B7/122 , G11B7/13 , H01S5/10 , H01S5/14 , H01S3/005 , H01S5/0028 , H01S5/005 , H01S5/0262 , H01S5/065 , H01S5/4031
摘要： A micro optical head, for optically reading and/or writing digital data on a recording medium in which digital data 1 and 0, corresponding to a high reflection factor and a low reflection factor, is composed of a self-coupled semiconductor laser located close to the recording medium. A bias current of the laser is determined so that it is smaller than a first threshold current, in which the medium has a low reflection factor, and is higher than a second threshold current, in which the medium has a high reflection factor. Output light of the laser is either strong stimulated emission light, corresponding to the high reflection factor, or weak spontaneous emission light, corresponding to the low reflection factor. The present head is carried on a flying slider with a spacing length less than several .mu.m which provides a small beam spot of about 1 .mu.m, and has an excellent signal to noise ratio. A photodetector for sensing the output of the laser may be carried on the same semiconductor substrate as that of the laser.
摘要翻译： 一种微光学头，用于在记录介质上光学读取和/或写入数字数据，其中对应于高反射因数和低反射系数的数字数据1和0由接近于...的自耦半导体激光器组成 记录介质。 确定激光器的偏置电流，使得其小于第一阈值电流，其中介质具有低反射系数，并且高于其中介质具有高反射系数的第二阈值电流。 激光的输出光是对应于低反射因子的强激发光，对应于高反射因子或弱自发发光。 当前的头部承载在间隔长度小于几μm的飞行滑块上，其提供约1μm的小束斑，具有优异的信噪比。 用于感测激光器的输出的光电检测器可以在与激光器相同的半导体衬底上承载。
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