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    System method and device for generating a temperature compensated write current during disk drive write operations
    1.
    发明授权
    System method and device for generating a temperature compensated write current during disk drive write operations 失效
    用于在磁盘驱动器写入操作期间产生温度补偿写入电流的系统方法和装置

    公开(公告)号：US06188531B1

    公开(公告)日：2001-02-13

    申请号：US09070271

    申请日：1998-04-30

    申请人： James Lai Kein Chang ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

    发明人： James Lai Kein Chang ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

    IPC分类号： G11B509

    CPC分类号： G11B5/09 ,  G11B5/012 ,  G11B5/02 ,  G11B5/035

    摘要： A system, method, and device for sensing temperature during the writing of information onto magnetic media and providing a sufficient write current for that temperature is disclosed. The system comprises a head responsive to a write current for generating a magnetic flux used in writing data onto the magnetic media, a write current source coupled to the head for receiving a write signal and providing write current to the head, and a temperature responsive device coupled to the write current source that senses temperature and provides a write signal whose magnitude is dependent on temperature.

    摘要翻译： 公开了一种用于在将信息写入磁介质并为该温度提供足够的写入电流期间感测温度的系统，方法和装置。 该系统包括响应于写入电流的磁头，用于产生用于将数据写入到磁性介质上的磁通量;耦合到磁头的写入电流源，用于接收写入信号并向磁头提供写入电流;以及温度响应装置 耦合到感应温度的写入电流源，并提供其幅度取决于温度的写入信号。

    System and method for low acoustic noise spindle motor commutation
    4.
    发明授权
    System and method for low acoustic noise spindle motor commutation 失效
    低噪声主轴电动机换向系统及方法

    公开(公告)号：US06215266B1

    公开(公告)日：2001-04-10

    申请号：US09100761

    申请日：1998-06-17

    申请人： Nan Ling Goh ,  James Lai Kein Chang ,  Yam Pheng Tham ,  Utt Heng Kan ,  Kah Liang Gan

    发明人： Nan Ling Goh ,  James Lai Kein Chang ,  Yam Pheng Tham ,  Utt Heng Kan ,  Kah Liang Gan

    IPC分类号： H02P620

    CPC分类号： H02M1/34 ,  H02M2001/348 ,  H02P6/14 ,  H02P6/20

    摘要： A system for low acoustic noise spindle motor commutation is disclosed. The system contains a control device that generates commutation control signals which cause spindle motor drivers to source or sink current through windings of a spindle motor. The windings create electromagnetic fields which induce rotational movement in a spindle motor rotor. Low acoustic noise snubber devices are coupled to each winding and are dynamically configurable by the control device to provide low spindle motor driver charging current upon initial application of power to the spindle motor, and reduced acoustic noise and back EMF-generated current and voltage surges at the spindle motor driver during spindle motor commutation.

    摘要翻译： 公开了一种用于低声噪声主轴电动机换向的系统。 该系统包含一个产生换向控制信号的控制装置，使得主轴电动机驱动器通过主轴电动机的绕组来产生或吸收电流。 绕组产生在主轴电机转子中引起旋转运动的电磁场。 低噪声缓冲装置耦合到每个绕组，并且可由控制装置动态地配置，以在初始向主轴电机施加电力时提供低主轴电动机驱动器充电电流，并且减少了噪声和反电动势产生的电流和电压浪涌 主轴电机换向时的主轴电机驱动器。