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    • 65. 发明申请
    • Data recording apparatus
    • 数据记录装置
    • US20070053101A1
    • 2007-03-08
    • US11515397
    • 2006-09-05
    • Junichi Akiyama
    • Junichi Akiyama
    • G11B5/265G11B3/70G11B9/00
    • G11B9/08
    • A data recording apparatus includes a recording medium which includes a semiconductor substrate, a first insulating layer formed on one surface of the substrate, a second insulating layer formed on the first insulating layer and is made to accumulate electric charge, an electrode layer formed on the other surface, and an insulating area which penetrates the insulating layers; and an electrode which applies a voltage to the medium. A depth from an interface between the substrate and the first insulating layer to the bottom of the insulating area is more than a maximum depth of a depletion layer, Wmax represented by Wmax=√{square root over (2ε0εi×2|φf|/qNd)} where ε0, εi, |φf|, q, and Nd are a dielectric constant of vacuum, a relative dielectric constant, an absolute value of the Felmi potential of the substrate, an electric charge of an electron, and an impurity concentration of the substrate, respectively.
    • 一种数据记录装置,包括:记录介质,包括半导体衬底,形成在所述衬底的一个表面上的第一绝缘层,形成在所述第一绝缘层上并被制成电荷的第二绝缘层;形成在所述第一绝缘层上的电极层 其它表面和穿透绝缘层的绝缘区域; 以及向介质施加电压的电极。 从衬底和第一绝缘层之间的界面到绝缘区域的底部的深度大于耗材层的最大深度,由<β在线公式描述表示的W max =“在线公式”end =“lead”?> W <>最大 =√{平方根以上(2epsilon 0 其中εilon<0> ε,ε,N,D是真空的介电常数,相对介电常数 ,基板的Felmi电位的绝对值,电子的电荷和基板的杂质浓度。
    • 70. 发明授权
    • Magnetic reproducing apparatus
    • 磁再现装置
    • US4677512A
    • 1987-06-30
    • US883028
    • 1986-07-10
    • Junichi AkiyamaShu ChibaNorikazu SawazakiShigeru Yatabe
    • Junichi AkiyamaShu ChibaNorikazu SawazakiShigeru Yatabe
    • G11B5/02G11B5/127G11B5/33G11B20/24
    • G11B5/332G11B20/24G11B5/1278
    • An apparatus for reproducing a signal recorded, in the form of a perpendicular signal magnetization, on a perpendicular magnetic recording layer backed with a high permeability layer of a magnetic recording medium. A thin-film magnetic material is disposed to face the recording layer so that an enlarged magnetized region is formed in the high permeability layer, which includes the position at which the magnetic material faces the recording layer. In this region, magnetic variation occurs in response to the signal magnetization of the recording layer at the position the magnetic material faces the recording layer. A detecting member such as a coil is disposed in the proximity of the magnetic material so as to be magnetically coupled to the enlarged magnetized region of the high permeability layer. The detecting member is used as a tuning element of a tuning circuit supplied with high frequency energy. A resonance output voltage of the high frequency circuit varies in response to the detection of magnetic variation in the high permeability layer. A reproducing circuit detects the variation in the resonance output voltage of the high frequency circuit to reproduce the signal recorded on the recording layer.
    • 用于将以垂直信号磁化的形式记录的信号再现在由磁记录介质的高磁导率层支撑的垂直磁记录层上的装置。 设置薄膜磁性材料以面对记录层,使得在包括磁性材料面对记录层的位置的高磁导率层中形成扩大的磁化区域。 在该区域中,响应于磁性材料面向记录层的位置的记录层的信号磁化而发生磁变化。 诸如线圈的检测部件设置在磁性材料附近,从而与高磁导率层的扩大的磁化区域磁耦合。 检测部件用作提供高频能量的调谐电路的调谐元件。 高频电路的谐振输出电压响应于高磁导率层中的磁变化的检测而变化。 再现电路检测高频电路的谐振输出电压的变化,以再现记录在记录层上的信号。