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    • 16. 发明授权
    • Optical storage device having a sector mark detecting circuit
    • 具有扇区标记检测电路的光存储装置
    • US06243344B1
    • 2001-06-05
    • US09106529
    • 1998-06-29
    • Hiroshi Tani
    • Hiroshi Tani
    • G11B700
    • G11B7/005G11B20/10009G11B27/3027
    • A sector mark detecting circuit for detecting a sector mark on an optical storage medium includes a binarizing circuit which binarizes a reading signal of an optical head in accordance with a predetermined detection parameter and is capable of changing the detection parameter. A recognizing circuit is adapted to recognize a sector mark from an output of the binarizing circuit, and a control circuit is adapted to measure an optimal value of the detection parameter of the binarizing circuit and control the detection parameter of the binarizing circuit to the optimal value. A sector mark detection rate is thereby enhanced.
    • 用于检测光学存储介质上的扇区标记的扇区标记检测电路包括:二值化电路,其根据预定的检测参数二值化光学头的读取信号,并且能够改变检测参数。 识别电路适于从二值化电路的输出识别扇区标记,并且控制电路适于测量二值化电路的检测参数的最佳值,并将二值化电路的检测参数控制到最佳值 。 从而增强扇区标记检测率。
    • 17. 发明授权
    • Method of producing magnetic disk
    • 制造磁盘的方法
    • US5549211A
    • 1996-08-27
    • US359272
    • 1994-12-19
    • Takao NakamuraNobuya SekiyamaHiroshi TaniYoshiki Kato
    • Takao NakamuraNobuya SekiyamaHiroshi TaniYoshiki Kato
    • G11B5/66G11B5/60G11B5/65G11B5/72G11B5/73G11B5/738G11B5/82G11B5/84G11B21/21B44C1/22
    • G11B5/6005G11B5/82G11B5/8404Y10T428/24355
    • There is disclosed a magnetic disk having a surface shape so designed as to satisfy flying characteristics and sliding characteristics in CSS and the head adhesion even in a high-density recording. The surface shape of the contact surface of the magnetic disk for contact with a sliding surface of a magnetic head plays a very important role in the magnetic disk characteristics such as the head flying characteristics, the head adhesion and the CSS characteristics, and it has been found that a three-dimensional load ratio (0.5% to 10%) and a symmetric property Rsk (0.5 to 2) of a cross-section curve representing depressions and projections on the surface are essential as items of evaluation of this surface shape. For example, the surface shape of an aluminum alloy disk plated with Ni--P is processed in such a manner that the load ratio of the three-dimensional load ratio BR5 is 0.5% to 10% and that the symmetric property Rsk of the cross-sectional shape of this surface is 0.5 to 2. Then, a chromium intermediate film, a Co--Cr magnetic film, a carbon protective film and a film of lubricant are formed on the substrate. By doing so, the magnetic disk having the desired characteristics can be obtained.
    • 公开了一种表面形状的磁盘,其设计成即使在高密度记录中也能满足CSS中的飞行特性和滑动特性以及头部粘附。 用于与磁头的滑动表面接触的磁盘的接触表面的表面形状在诸如头部飞行特性,头部附着力和CSS特性的磁盘特性中起着非常重要的作用,并且已经被 发现表面上的凹凸的横截面曲线的三维载荷比(0.5%〜10%)和对称性Rsk(0.5〜2)是必须的,作为该表面形状的评价项目。 例如,以三维负荷比BR5的负载比为0.5%〜10%的方式对镀有Ni-P的铝合金盘的表面形状进行加工, 该表面的截面形状为0.5〜2。然后,在基板上形成铬中间膜,Co-Cr磁性膜,碳保护膜和润滑剂膜。 通过这样做,可以获得具有期望特性的磁盘。
    • 19. 发明授权
    • Magnetic head slider with groove formed in reduced-width portion of trailing pad between head and trailing edge
    • 磁头滑块,其具有形成在头部和后缘之间的拖尾垫的减小宽度部分中的凹槽
    • US07525766B2
    • 2009-04-28
    • US11060847
    • 2005-02-18
    • Hiroshi Tani
    • Hiroshi Tani
    • G11B5/60G11B17/32
    • G11B5/6082
    • In one embodiment, the slider surface comprises an inflow shallow groove part formed in a stepped manner, two inflow end pads, a negative pressure generating deep groove part, an outflow shallow deep groove part formed on the air outflow end side, an outflow end pad provided on the outflow shallow groove part, and a trimmed part (flying height reducing portion) in which the outflow end pad is extended to the air outflow end while being narrowed in width. A magnetic head is formed on the trimmed part on the outflow side of the outflow end pad, and the trimmed part between the magnetic head and the outflow end is formed with a groove portion in the air outflow direction.
    • 在一个实施例中,滑块表面包括以阶梯形式形成的流入浅槽部,两个流入端垫,负压产生深槽部,形成在空气流出端侧的流出浅深槽部,流出端垫 设置在流出浅槽部分上,以及修剪部分(飞行高度降低部分),其中流出端垫片在宽度方向上延伸到空气流出端。 在流出端垫的流出侧的修剪部上形成有磁头,在磁头和流出端之间的修整部分在空气流出方向形成有槽部。
    • 20. 发明申请
    • Magnetic head slider and magnetic disk drive
    • 磁头滑块和磁盘驱动器
    • US20080080094A1
    • 2008-04-03
    • US11904689
    • 2007-09-27
    • Hiroshi TaniSunao Yonekawa
    • Hiroshi TaniSunao Yonekawa
    • G11B5/60G11B15/64G11B21/20
    • G11B17/32
    • Embodiments of the present invention help to prevent, in a magnetic head slider adapted to be able to control flying height of a head element, the occurrence of excessive frictional force, even in case of contact with a magnetic disk, and suppress vibration of the slider. According to one embodiment, an air bearing surface of a magnetic head slider includes a deep groove, a shallow-trench rail about 100 nm higher than the deep groove, a rear end shoulder, two leading end pads about 1 μm higher than the deep groove, a trailing end pad about 970-995 nm higher than the deep groove, and an element pad about 5-30 nm higher than the trailing end pad and flush with the leading end pads. A head element includes a magnetic head element and a heater. The element pad has an area of 50-500 μm2, and the magnetic head element is disposed near a central section of the element pad.
    • 本发明的实施例有助于在适于能够控制头元件的飞行高度的磁头滑动器中,即使在与磁盘接触的情况下也会发生过大的摩擦力,并且抑制滑块的振动 。 根据一个实施例,磁头滑动器的空气轴承表面包括深沟槽,比深槽高约100nm的浅沟槽轨道,后端肩部,比深槽高约1米的两个前端焊盘 ,比深沟槽高约970-995nm的尾端垫,以及比后端垫高约5-30nm并与前端焊盘齐平的元件垫。 头元件包括磁头元件和加热器。 元件焊盘的面积为50-500μm2,磁头元件设置在元件焊盘的中央部分附近。