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    Disk drive apparatus and read error recovery method in a disk drive apparatus
    2.
    发明授权
    Disk drive apparatus and read error recovery method in a disk drive apparatus 失效
    磁盘驱动装置中的磁盘驱动装置和读取错误恢复方法

    公开(公告)号：US5696643A

    公开(公告)日：1997-12-09

    申请号：US632787

    申请日：1996-04-17

    申请人： Kazushi Tsuwako ,  Fujio Harako ,  Katsumi Suda ,  Michio Nakajima ,  Isao Yoneda ,  Kenji Ogasawara

    发明人： Kazushi Tsuwako ,  Fujio Harako ,  Katsumi Suda ,  Michio Nakajima ,  Isao Yoneda ,  Kenji Ogasawara

    IPC分类号： G11B5/60 ,  G11B19/04 ,  G11B19/20 ,  G11B23/50 ,  G11B15/46

    CPC分类号： G11B5/6005 ,  G11B19/04 ,  G11B19/20 ,  G11B23/505

    摘要： A disk drive apparatus and read error recovery method in a disk drive apparatus removes thermal asperities on disk surfaces. A projection, such as a thermal asperity, on the recording surfaces of disks is detected when a signal transducer contacts the projection. The flying height of the signal transducer is lowered, e.g., by reducing the disk rotation speed from the normal rotation speed in read/write operations, while the signal transducer is positioned over the detected projection on the track. The signal transducer strikes the projection to break the projection. This avoids a subsequent error from being caused by the thermal asperity.

    摘要翻译： 磁盘驱动装置中的磁盘驱动装置和读取错误恢复方法去除磁盘表面上的热凹凸。 当信号传感器接触投影时，检测在盘的记录表面上的诸如热不均匀性的投影。 信号传感器的飞行高度例如通过在读/写操作中将盘旋转速度从正常旋转速度减小而信号换能器位于轨道上检测到的投影上方。 信号传感器撞击投影以断开投影。 这避免了由热不均匀引起的后续错误。

    Preamplifier circuit with magnetoresistive sensor ESD protection
    3.
    发明授权
    Preamplifier circuit with magnetoresistive sensor ESD protection 有权
    前置放大器电路采用磁阻传感器ESD保护

    公开(公告)号：US06259573B1

    公开(公告)日：2001-07-10

    申请号：US09255055

    申请日：1999-02-22

    申请人： Kazushi Tsuwako ,  Yoshiro Amano ,  Takao Matsui ,  Tsuyoshi Miura

    发明人： Kazushi Tsuwako ,  Yoshiro Amano ,  Takao Matsui ,  Tsuyoshi Miura

    IPC分类号： G11B509

    CPC分类号： G11B5/012 ,  G11B5/40 ,  G11B5/4806 ,  G11B33/122 ,  H05K1/0216 ,  H05K1/18

    摘要： A preamplifier circuit to improve the ESD immunity of magnetic recording devices having magnetoresistive (MR) sensors, without degrading the sensor's high-frequency characteristics. The preamplifier circuit is coupled to an MR sensor having one terminal grounded. The preamplifier circuit includes a varistor coupled between a power supply line and a ground terminal. If a high voltage, exceeding the varistor voltage, is applied to the chassis (ground), it is discharged through the varistor between the power supply voltage line and the ground terminal, instead of through the MR head or the arm electronics module. The present invention thereby protects the MR head and the arm electronics module from ESD damage.

    摘要翻译： 一种用于提高具有磁阻（MR）传感器的磁记录装置的ESD抗扰度的前置放大器电路，而不降低传感器的高频特性。 前置放大器电路耦合到具有一个端子接地的MR传感器。 前置放大器电路包括耦合在电源线和接地端子之间的变阻器。 如果高压（超过压敏电阻电压）施加到机箱（接地），则通过电源电压线和接地端子之间的压敏电阻，而不是通过MR头或手臂电子模块进行放电。 本发明从而保护MR头和臂电子模块免受ESD损坏。

    Hard disk drive with electrically conductive sheet for electrostatic discharge protection
    6.
    发明授权
    Hard disk drive with electrically conductive sheet for electrostatic discharge protection 失效
    带导电片的硬盘驱动器用于静电放电保护

    公开(公告)号：US06822823B1

    公开(公告)日：2004-11-23

    申请号：US09553182

    申请日：2000-04-20

    申请人： Kazushi Tsuwako ,  Kenichi Kuramoto ,  Hiroshi Matsuda ,  Hiroki Kitahori

    发明人： Kazushi Tsuwako ,  Kenichi Kuramoto ,  Hiroshi Matsuda ,  Hiroki Kitahori

    IPC分类号： G11B1700

    CPC分类号： H05K9/0067 ,  G11B33/1493

    摘要： A hard disk drive has an enclosure with disk construction members and is characterized by covering the enclosure with an electrically conductive sheet. The electrically conductive sheet protects the drive regardless of which direction an ESD charge is applied. The electrically conductive sheet does not permit ESD to pass through the disk construction members stored in the enclosure. Therefore, it is possible to form a structure in which a GMR head or the like in an enclosure is not damaged due to ESD even if the enclosure is handled by a general end user. Moreover, the present invention relates to an electrically conductive sheet for covering at least both principal planes of the enclosure of a hard disk drive constituted as described above. Other modes of the invention include at least both principal planes of an enclosure being covered by the electrically conductive sheet in such a way that both sheets on both principal planes are electrically connected. In addition, portions where the enclosure contacts the disk construction members on both principal planes may also be covered and electrically interconnected. Furthermore, the electrically conductive sheet may be bonded to the surface of the enclosure by an adhesive, or provided with an opening at a position corresponding to an enclosure portion that must be brought into contact with an external atmosphere.

    摘要翻译： 硬盘驱动器具有带盘结构构件的外壳，其特征在于用导电片覆盖外壳。 不管施加ESD电荷的方向如何，导电片保护驱动。 导电片不允许ESD通过存储在外壳中的盘结构件。 因此，即使外壳由一般终端用户处理，也可以形成由于ESD而不会损坏外壳内的GMR头等的结构。 此外，本发明涉及一种用于覆盖如上所述构成的硬盘驱动器的外壳的至少两个主平面的导电片。 本发明的其它模式至少包括外壳的两个主平面被导电片覆盖，使得两个主平面上的两个片电连接。 此外，外壳在两个主平面上与盘结构构件接触的部分也可被覆盖并电互连。 此外，导电片可以通过粘合剂结合到外壳的表面，或者在对应于必须与外部大气接触的外壳部分的位置处设置有开口。

    Magnetic head handling glove
    7.
    发明授权
    Magnetic head handling glove 失效
    磁头处理手套

    公开(公告)号：US06618236B1

    公开(公告)日：2003-09-09

    申请号：US09607583

    申请日：2000-06-29

    申请人： Kazushi Tsuwako ,  Yasuhiro Sasao ,  Katsushi Yamaguchi ,  Hirokazu Yamamoto

    发明人： Kazushi Tsuwako ,  Yasuhiro Sasao ,  Katsushi Yamaguchi ,  Hirokazu Yamamoto

    IPC分类号： H05E300

    CPC分类号： A41D19/0058

    摘要： A magnetic head handling glove capable of preventing the buildup of static charges and electric charge leakage and capable of withstanding use in clean rooms is described. In the magnetic head handling glove 1 of the present invention, the outer surface alone or both the outer surface and inner surface of a conductive glove 2 are coated with dissipative material 3,4. This results in coating of the conductive glove with materials useable in clean rooms and may suppress possible contamination that can result when a conventional conductive glove, lacking in such coating of dissipative material, is used directly in a clean room. Besides this, the conductive glove 2 is configured to be grounded directly with wire 5. In this way, even an operator prone to the buildup of static charges can be sufficiently prevented from building up static electrical charges and electric charge leakage.

    摘要翻译： 描述了能够防止静电荷积聚和电荷泄漏并能够在洁净室中使用的磁头处理手套。 在本发明的磁头处理手套1中，导电手套2的外表面或外表面和内表面均涂有耗散材料3,4。 这导致导电手套用可用于洁净室的材料进行涂覆，并且可以抑制当在洁净室中直接使用常规导电手套时，可能导致的可能的污染，这些手套缺乏耗散材料的涂层。 此外，导电手套2被配置为直接与线5接地。这样，即使能够充分防止容易产生静电的操作者构成静电荷和电荷泄漏。