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    DISK DRIVE AND METHOD FOR HEAD SERVO CONTROL OF THE DISK DRIVE
    1.
    发明申请
    DISK DRIVE AND METHOD FOR HEAD SERVO CONTROL OF THE DISK DRIVE 有权
    磁盘驱动器的磁盘驱动器和磁盘驱动器的伺服控制方法

    公开(公告)号：US20100142082A1

    公开(公告)日：2010-06-10

    申请号：US12631729

    申请日：2009-12-04

    申请人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida

    发明人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida

    IPC分类号： G11B21/02

    CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B5/59622

    摘要： A disk drive. The disk drive includes a head, a moving mechanism, a first peak filter, an adaptive peak filter, and a filter controller. The head is configured to read servo data on a disk at sampling frequency. The moving mechanism is configured to move the head in proximity with a recording surface of the disk. The first peak filter has a fixed peak frequency and a variable gain, and is configured to be inserted into a servo loop. The servo loop is configured to position the head with position error signals between servo data read by the head and a target position. The adaptive peak filter has a variable peak frequency and a variable gain, and is configured to be inserted into the servo loop. The filter controller is configured to control the gain of the adaptive peak filter according to the gain of the first peak filter.

    摘要翻译： 磁盘驱动器 磁盘驱动器包括磁头，移动机构，第一峰值滤波器，自适应峰值滤波器和滤波器控制器。 磁头被配置为以采样频率读取磁盘上的伺服数据。 移动机构被配置为使磁头靠近磁盘的记录表面移动。 第一峰值滤波器具有固定的峰值频率和可变增益，并被配置为插入到伺服环路中。 伺服回路被配置为在头部读取的伺服数据与目标位置之间定位头部位置误差信号。 自适应峰值滤波器具有可变的峰值频率和可变增益，并被配置为插入到伺服环路中。 滤波器控制器被配置为根据第一峰值滤波器的增益来控制自适应峰值滤波器的增益。

    Disc device
    2.
    发明授权
    Disc device 失效
    光盘设备

    公开(公告)号：US06407883B2

    公开(公告)日：2002-06-18

    申请号：US09761735

    申请日：2001-01-18

    申请人： Takashi Kohno ,  Kenji Tomida

    发明人： Takashi Kohno ,  Kenji Tomida

    IPC分类号： G11B1702

    CPC分类号： G11B25/043 ,  G11B19/2009 ,  G11B33/1473

    摘要： A disc device includes a housing, a fixed shaft at least partially disposed in the housing, wherein the fixed shaft is divided into two parts which are joined together. The disc device also includes one or more discs, a hub for loading the discs, at least a head for reproducing information recorded on each of the discs, and a drive system for moving the head to any position on each of the discs. A motor for driving the hub to rotate is provided outside the housing, and at least two fluid film bearings are provided so that the hub is supported by the fixed shaft so as to be rotatable.

    摘要翻译： 盘装置包括壳体，至少部分地设置在壳体中的固定轴，其中固定轴被分成两部分，它们连接在一起。 盘装置还包括一个或多个盘，用于装载盘的轮毂，至少一个用于再现记录在每个盘上的信息的头，以及用于将头移动到每个盘上的任何位置的驱动系统。 用于驱动毂旋转的电动机设置在壳体外部，并且至少设有两个流体膜轴承，使得毂由固定轴支撑以便可旋转。

    Disc device
    4.
    发明授权
    Disc device 有权
    光盘设备

    公开(公告)号：US06195224B1

    公开(公告)日：2001-02-27

    申请号：US09175328

    申请日：1998-10-20

    申请人： Takashi Kohno ,  Kenji Tomida

    发明人： Takashi Kohno ,  Kenji Tomida

    IPC分类号： G11B1702

    CPC分类号： G11B25/043 ,  G11B19/2009 ,  G11B33/1473

    摘要： When a disc device employs a fluid bearing, vibrations can be decreased at a high-speed rotation. There are, however, problems of deterioration in bearing rigidity and leakage of lubricating fluid with increase in temperature. For this reason, a motor is disposed outside a housing, two shafts which differ in diameter from each other are joined with each other to form a fixed shaft, each of the two shafts is provided with a fluid bearing, a magnetic fluid is used as a lubricating fluid, and a magnetic seal is provided outside each bearing.

    摘要翻译： 当盘装置采用流体轴承时，可以在高速旋转时减小振动。 然而，随着温度的升高，轴承刚度的劣化和润滑液的泄漏也存在问题。 为此，将电动机设置在壳体外部，将彼此不同直径的两个轴彼此接合以形成固定轴，每个轴设置有流体轴承，磁性流体用作 润滑流体和磁性密封件设置在每个轴承的外侧。

    Magnetic disk device and head stack assembly
    7.
    发明授权
    Magnetic disk device and head stack assembly 有权
    磁盘装置和磁头组合组件

    公开(公告)号：US08094412B2

    公开(公告)日：2012-01-10

    申请号：US12313291

    申请日：2008-11-18

    申请人： Noritaka Otake ,  Keiko Watanabe ,  Toshihiko Shimizu ,  Kenji Tomida

    发明人： Noritaka Otake ,  Keiko Watanabe ,  Toshihiko Shimizu ,  Kenji Tomida

    IPC分类号： G11B5/48

    CPC分类号： G11B5/4813 ,  G11B5/4886

    摘要： Embodiments of the present invention relate disk drives, and in particular to realizing a positioning accuracy equal to that of an actuator having the mountable maximum number of suspensions, in an actuator having the smaller number of suspensions than the mountable maximum number. An embodiment of a magnetic disk device includes an actuator having an arm to which a suspension for applying a predetermined load onto a slider with a magnetic head is attached, and an arm to which a plate is attached instead of having the suspension. The plate attached to the arm in place of the suspension has a partially small section with respect to a section perpendicular to an arm longitudinal direction (constricted part), and the constricted part is located between a plate leading end and an arm attachment part.

    摘要翻译： 本发明的实施例涉及在具有比可安装的最大数量少的悬架数量的致动器中的磁盘驱动器，特别是实现与具有可安装最大数量的悬架的致动器相同的定位精度。 磁盘装置的一个实施例包括一个致动器，该致动器具有一个臂，附接有用于将预定负载施加到具有磁头的滑块上的悬架，并且连接有安装板的臂而不是具有悬架。 代替悬架而安装在臂上的板相对于垂直于臂长度方向（收缩部分）的部分具有部分小的截面，并且收缩部分位于板前端和臂附接部分之间。

    Disk drive and method for head servo control of the disk drive
    8.
    发明授权
    Disk drive and method for head servo control of the disk drive 有权
    磁盘驱动器和磁盘驱动器头伺服控制方法

    公开(公告)号：US08059356B2

    公开(公告)日：2011-11-15

    申请号：US12631729

    申请日：2009-12-04

    申请人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida ,  Takenori Atsumi

    发明人： Chikako Sakagami ,  Kazuhisa Shishida ,  Isao Yoneda ,  Kazuaki Usui ,  Hiroshi Uchida ,  Takeshi Saito ,  Kenji Tomida ,  Takenori Atsumi

    IPC分类号： G11B21/02

    CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B5/59622

    摘要： A disk drive. The disk drive includes a head, a moving mechanism, a first peak filter, an adaptive peak filter, and a filter controller. The head is configured to read servo data on a disk at sampling frequency. The moving mechanism is configured to move the head in proximity with a recording surface of the disk. The first peak filter has a fixed peak frequency and a variable gain, and is configured to be inserted into a servo loop. The servo loop is configured to position the head with position error signals between servo data read by the head and a target position. The adaptive peak filter has a variable peak frequency and a variable gain, and is configured to be inserted into the servo loop. The filter controller is configured to control the gain of the adaptive peak filter according to the gain of the first peak filter.

    摘要翻译： 磁盘驱动器 磁盘驱动器包括磁头，移动机构，第一峰值滤波器，自适应峰值滤波器和滤波器控制器。 磁头被配置为以采样频率读取磁盘上的伺服数据。 移动机构被配置为使磁头靠近磁盘的记录表面移动。 第一峰值滤波器具有固定的峰值频率和可变增益，并被配置为插入到伺服环路中。 伺服回路被配置为在头部读取的伺服数据与目标位置之间定位头部位置误差信号。 自适应峰值滤波器具有可变的峰值频率和可变增益，并被配置为插入到伺服环路中。 滤波器控制器被配置为根据第一峰值滤波器的增益来控制自适应峰值滤波器的增益。

    Magnetic disk device and head stack assembly
    9.
    发明申请
    Magnetic disk device and head stack assembly 有权
    磁盘装置和磁头组合组件

    公开(公告)号：US20090147406A1

    公开(公告)日：2009-06-11

    申请号：US12313291

    申请日：2008-11-18

    申请人： Noritaka Otake ,  Keiko Watanabe ,  Toshihiko Shimizu ,  Kenji Tomida

    发明人： Noritaka Otake ,  Keiko Watanabe ,  Toshihiko Shimizu ,  Kenji Tomida

    IPC分类号： G11B5/48

    CPC分类号： G11B5/4813 ,  G11B5/4886

    摘要： Embodiments of the present invention relate disk drives, and in particular to realizing a positioning accuracy equal to that of an actuator having the mountable maximum number of suspensions, in an actuator having the smaller number of suspensions than the mountable maximum number. An embodiment of a magnetic disk device includes an actuator having an arm to which a suspension for applying a predetermined load onto a slider with a magnetic head is attached, and an arm to which a plate is attached instead of having the suspension. The plate attached to the arm in place of the suspension has a partially small section with respect to a section perpendicular to an arm longitudinal direction (constricted part), and the constricted part is located between a plate leading end and an arm attachment part.

    摘要翻译： 本发明的实施例涉及在具有比可安装的最大数量少的悬架数量的致动器中的磁盘驱动器，特别是实现与具有可安装最大数量的悬架的致动器相同的定位精度。 磁盘装置的一个实施例包括一个致动器，该致动器具有一个臂，附接有用于将预定负载施加到具有磁头的滑块上的悬架，并且连接有安装板的臂而不是具有悬架。 代替悬架而安装在臂上的板相对于垂直于臂长度方向（收缩部分）的部分具有部分小的截面，并且收缩部分位于板前端和臂附接部分之间。