Magnetic disk drive operating under a low-pressure environment and controlling the same
    1.
    发明授权
    Magnetic disk drive operating under a low-pressure environment and controlling the same 失效
    磁盘驱动器在低压环境下运行并进行控制

    公开(公告)号:US07079348B2

    公开(公告)日:2006-07-18

    申请号:US10838520

    申请日:2004-05-03

    IPC分类号: G11B5/60

    摘要: A magnetic disk drive has an external environment monitoring function. Data is stored on available disk media while the magnetic disk drive is in an unfavorable environment. Under favorable conditions, the data is then moved to a write-restricted area of the media, which was unavailable while the magnetic disk drive was in the unfavorable environment. The magnetic disk drive uses a temperature sensor/atmospheric pressure sensor as a monitoring device and exercises a function, for example, for reading a reference signal stored in a predetermined area of the medium at predefined intervals. When the external environment is favorable for the magnetic disk drive, the present invention can increase the information storage capacity determined appropriate under the current operating conditions.

    摘要翻译: 磁盘驱动器具有外部环境监控功能。 数据存储在可用的磁盘介质上,而磁盘驱动器处于不利的环境中。 在有利的条件下,数据然后移动到介质的写入限制区域,当磁盘驱动器处于不利的环境中时,该区域不可用。 磁盘驱动器使用温度传感器/大气压力传感器作为监视装置,并且执行例如以预定间隔读取存储在介质的预定区域中的参考信号的功能。 当外部环境有利于磁盘驱动器时,本发明可以增加在当前操作条件下适当确定的信息存储容量。

    MAGNETIC DISK DRIVE AND MAGNETIC DISK DRIVE CONTROL
    2.
    发明申请
    MAGNETIC DISK DRIVE AND MAGNETIC DISK DRIVE CONTROL 失效
    磁盘驱动和磁盘驱动控制

    公开(公告)号:US20060203375A1

    公开(公告)日:2006-09-14

    申请号:US11138244

    申请日:2005-05-25

    IPC分类号: G11B21/02

    CPC分类号: G11B21/12 G11B19/04 G11B19/06

    摘要: Embodiments of the invention provide a magnetic disk drive and magnetic disk drive control method for unloading a head safely with a simple configuration when a positioning control signal cannot be detected due, for instance, to a seek error. In one embodiment, when a head cannot detect servo information prerecorded on a disk, a positioning control section resets and starts a time counting section, and switches to an unloading control section for causing the unloading control section to output a position control signal to a VCM driver. The time counting section counts tacho-pulses generated by a motor driver, and outputs time information. The unloading control section receives the time information from the time counting section. In accordance with the received time information, the unloading control section computes the position control signal that the positioning control section outputs to the VCM driver. In this instance, the unloading control section controls the VCM driver to provide such an electrical current profile that the drive current to be supplied to a VCM is small at an initial stage and large at a later stage.

    摘要翻译: 本发明的实施例提供一种磁盘驱动器和磁盘驱动器控制方法,当由于例如寻道误差而不能检测定位控制信号时,以简单的配置来安全地卸载磁头。 在一个实施例中,当头不能检测到预先记录在盘上的伺服信息时,定位控制部分复位并启动时间计数部分,并且切换到卸载控制部分,以使卸载控制部分向VCM输出位置控制信号 司机。 时间计数部分计算由电机驱动器产生的转速脉冲,并输出时间信息。 卸载控制部分从时间计数部分接收时间信息。 根据接收到的时间信息,卸载控制部分计算定位控制部分向VCM驱动器输出的位置控制信号。 在这种情况下,卸载控制部分控制VCM驱动器以提供在初始阶段提供给VCM的驱动电流较小并在稍后阶段较大的电流分布。

    Magnetic disk drive and magnetic disk drive control
    3.
    发明授权
    Magnetic disk drive and magnetic disk drive control 失效
    磁盘驱动器和磁盘驱动器控制

    公开(公告)号:US07133242B2

    公开(公告)日:2006-11-07

    申请号:US11138244

    申请日:2005-05-25

    IPC分类号: G11B21/02 G11B5/596

    CPC分类号: G11B21/12 G11B19/04 G11B19/06

    摘要: Embodiments of the invention provide a magnetic disk drive and magnetic disk drive control method for unloading a head safely with a simple configuration when a positioning control signal cannot be detected due, for instance, to a seek error. In one embodiment, when a head cannot detect servo information prerecorded on a disk, a positioning control section resets and starts a time counting section, and switches to an unloading control section for causing the unloading control section to output a position control signal to a VCM driver. The time counting section counts tacho-pulses generated by a motor driver, and outputs time information. The unloading control section receives the time information from the time counting section. In accordance with the received time information, the unloading control section computes the position control signal that the positioning control section outputs to the VCM driver. In this instance, the unloading control section controls the VCM driver to provide such an electrical current profile that the drive current to be supplied to a VCM is small at an initial stage and large at a later stage.

    摘要翻译: 本发明的实施例提供一种磁盘驱动器和磁盘驱动器控制方法,当由于例如寻道误差而不能检测定位控制信号时,以简单的配置来安全地卸载磁头。 在一个实施例中,当头不能检测到预先记录在盘上的伺服信息时,定位控制部分复位并启动时间计数部分,并且切换到卸载控制部分,以使卸载控制部分向VCM输出位置控制信号 司机。 时间计数部分计算由电机驱动器产生的转速脉冲,并输出时间信息。 卸载控制部分从时间计数部分接收时间信息。 根据接收到的时间信息,卸载控制部分计算定位控制部分向VCM驱动器输出的位置控制信号。 在这种情况下,卸载控制部分控制VCM驱动器以提供在初始阶段提供给VCM的驱动电流较小并且在稍后阶段较大的电流分布。