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19 条记录 (耗时 0.023 秒)

    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。

    Cartridge screening technique by using the electrical dynamic bearing resistance
    2.
    发明授权
    Cartridge screening technique by using the electrical dynamic bearing resistance 有权
    滤芯筛选技术采用电动轴承阻力

    公开(公告)号：US06549020B2

    公开(公告)日：2003-04-15

    申请号：US09792884

    申请日：2001-02-23

    申请人： Eng Hock Lim ,  Quek Leong Choo ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

    发明人： Eng Hock Lim ,  Quek Leong Choo ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

    IPC分类号： G01R2708

    CPC分类号： G11B5/5526 ,  G11B5/5521

    摘要： A method for characterizing a bearing cartridge based on a preload applied to the bearing cartridge used in a disc drive, to increase disc drive yield rates. The method begins by loading the bearing cartridge on to a test fixture and to an actuator assembly such that the actuator is rotatably attached to the base by the bearing cartridge. Then, the method includes inducing a steady swing in the actuator. Then, the method includes measuring a voltage drop that occurs across the bearing cartridge during the steady swing to characterize the preload applied to the bearing cartridge.

    摘要翻译： 一种用于基于施加到在盘驱动器中使用的轴承盒的预加载来表征轴承盒的方法，以增加盘驱动器的屈服率。 该方法开始于将轴承盒装载到测试夹具和致动器组件上，使得致动器通过轴承筒可旋转地附接到基座。 然后，该方法包括在致动器中引起稳定的摆动。 然后，该方法包括测量在稳定摆动期间在轴承盒上发生的电压降，以表征施加到轴承盒的预载荷。

    Method and apparatus for run-time temperature compensation of giant magnetoresistive head bias current
    4.
    发明授权
    Method and apparatus for run-time temperature compensation of giant magnetoresistive head bias current 失效
    巨磁阻头偏置电流的运行时温度补偿方法和装置

    公开(公告)号：US06574061B1

    公开(公告)日：2003-06-03

    申请号：US09610202

    申请日：2000-07-03

    申请人： Khong Mau Ling ,  Lian Chong Kwek ,  Kwee Teck Say ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

    发明人： Khong Mau Ling ,  Lian Chong Kwek ,  Kwee Teck Say ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

    IPC分类号： G11B503

    CPC分类号： G11B5/012 ,  G11B5/02 ,  G11B5/035 ,  G11B33/14 ,  G11B2005/0018 ,  G11B2005/3996

    摘要： A process of run-time temperature compensating bias current to a magnetoresistive read head in which a plurality of temperature ranges are defined with associated bias current values. A hysteresis range of temperatures is defined for each boundary between temperature ranges. A bias current value is selected based on the temperature range of the sensed temperature. The process is repeated. If the sensed temperature is in a different temperature range from that previously identified and the measured temperature is not in a hysteresis range at the boundary with the temperature range previously identified, the selected bias current value is based on the presently identified temperature range. If the sensed temperature is in a hysteresis range at the boundary with the temperature range previously.

    摘要翻译： 对磁阻读取头的运行时温度补偿偏置电流的过程，其中多个温度范围被定义为具有相关联的偏置电流值。 为温度范围内的每个边界定义温度的滞后范围。 基于感测温度的温度范围选择偏置电流值。 重复该过程。 如果检测到的温度处于与先前识别的温度不同的温度范围内，并且测量的温度在与先前识别的温度范围的边界处不在滞后范围内，则所选择的偏置电流值基于当前识别的温度范围。 如果检测到的温度在先前与温度范围的边界处于滞后范围。

    System, method, and device for a regenerative constant velocity park for voice coil motor
    5.
    发明授权
    System, method, and device for a regenerative constant velocity park for voice coil motor 失效
    音圈电机再生恒速驻车系统，方法及装置

    公开(公告)号：US06188540B1

    公开(公告)日：2001-02-13

    申请号：US09107889

    申请日：1998-06-30

    申请人： Kah Liang Gan ,  Beng Wee Quak ,  Kok Hoe Chia ,  Chee Wai Lum

    发明人： Kah Liang Gan ,  Beng Wee Quak ,  Kok Hoe Chia ,  Chee Wai Lum

    IPC分类号： G11B5596

    CPC分类号： G11B21/12 ,  G11B5/5547 ,  G11B5/596

    摘要： A system, method, and device for moving a plurality of heads in a disk drive is disclosed. The system comprises hard disks, read/write heads for reading from or writing to the hard disks, a voice coil motor for moving the plurality of heads, a voice coil motor driver for energizing the voice coil motor, a voltage clamp device for regulating a voltage across the voice coil motor, and a park voltage source. The voltage clamp device comprises a transistor, a switch, and a resistive divider network. During head parking, a park voltage source activates the voltage clamp device, which clamps the voltage across the voice coil motor to a fixed value, resulting in movement of the voice coil and heads towards a park location with fixed velocity.

    摘要翻译： 公开了一种用于移动磁盘驱动器中的多个磁头的系统，方法和装置。 该系统包括硬盘，用于读取或写入硬盘的读/写头，用于移动多个磁头的音圈电机，用于激励音圈电机的音圈电机驱动器，用于调节音圈电机的电压钳装置 音圈电机两端的电压，以及驻波电压源。 电压钳位装置包括晶体管，开关和电阻分压器网络。 在停车期间，公园电压源激活电压钳位装置，其将音圈电动机上的电压钳位到固定值，导致音圈和头部以固定速度朝向公园位置移动。

    System and method for low acoustic noise spindle motor commutation
    7.
    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。

    Adaptive dampening of thermal asperity events in disc drives
    10.
    发明授权
    Adaptive dampening of thermal asperity events in disc drives 有权
    磁盘驱动器中热凹凸事件的自适应衰减

    公开(公告)号：US06724550B2

    公开(公告)日：2004-04-20

    申请号：US09955621

    申请日：2001-09-19

    申请人： Eng Hock Lim ,  Beng Theam Ko ,  Hweepeng Teo ,  Fong Kheon Chong ,  Myint Ngwe ,  Kah Liang Gan

    发明人： Eng Hock Lim ,  Beng Theam Ko ,  Hweepeng Teo ,  Fong Kheon Chong ,  Myint Ngwe ,  Kah Liang Gan

    IPC分类号： G11B502

    CPC分类号： G11B5/012 ,  G11B5/09 ,  G11B20/24

    摘要： A method for the adaptive dampening of a peak amplitude of a thermal asperity signal in a disc drive to minimize loss of read data integrity, including the steps of determining a peak-to-peak preamble signal amplitude for identifying an amplitude signal range of the peak amplitude of the thermal asperity signal; measuring the peak amplitude of the thermal asperity signal; separating the peak-to-peak preamble signal amplitude into substantially even portions for use in calculating a value of the amplitude signal range of the peak amplitude of the thermal asperity signal; calculating the value of the amplitude signal range of the peak amplitude of the thermal asperity signal for use in determining a dampening resistance used by a dampening circuit to adaptively dampen the peak amplitude of the thermal asperity signal; and activating the dampening circuit to dampen the peak amplitude of the thermal asperity signal.

    摘要翻译： 一种用于自适应衰减磁盘驱动器中的热不平坦信号的峰值振幅的方法，以最小化读取数据完整性的损失，包括以下步骤：确定峰 - 峰前导信号幅度，以识别峰值的振幅信号范围 热凹凸信号的振幅; 测量热凹凸信号的峰值振幅; 将峰 - 峰前导信号振幅分离成基本上均匀的部分，以用于计算热不平坦信号的峰值幅度的振幅信号范围的值; 计算用于确定由衰减电路使用的阻尼电阻以自适应地抑制热凹凸信号的峰值振幅的热凹凸信号的峰值振幅的振幅信号范围的值; 并激活衰减电路以抑制热凹凸信号的峰值振幅。