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    Data storage medium with optimized servo format
    4.
    发明申请
    Data storage medium with optimized servo format 有权
    具有优化伺服格式的数据存储介质

    公开(公告)号：US20070064325A1

    公开(公告)日：2007-03-22

    申请号：US11231960

    申请日：2005-09-21

    申请人： Qiang Bi ,  KianKeong Ooi ,  TaiVie Chiang ,  WingKong Chiang ,  Edmun Seng ,  Jimmy Pang ,  BengWee Quak ,  UttHeng Kan ,  Xiong Liu

    发明人： Qiang Bi ,  KianKeong Ooi ,  TaiVie Chiang ,  WingKong Chiang ,  Edmun Seng ,  Jimmy Pang ,  BengWee Quak ,  UttHeng Kan ,  Xiong Liu

    IPC分类号： G11B5/09 ,  G11B5/596

    CPC分类号： G11B5/59655

    摘要： A data storage medium and data storage system with improved efficiency of formatting are provided. One illustrative embodiment of the present invention pertains to a data storage medium. The data storage medium includes a first zone having servo information written with a first frequency, a second zone having servo information written with a second frequency, and a guard band disposed between the first zone and the second zone. The use of different frequencies in different zones contributes to optimizing the properties of the data storage medium, and the guard band contributes to optimizing the usage of the different zones.

    摘要翻译： 提供了提供格式化效率的数据存储介质和数据存储系统。 本发明的一个说明性实施例涉及数据存储介质。 数据存储介质包括具有以第一频率写入的伺服信息的第一区，具有以第二频率写入的伺服信息的第二区和设置在第一区和第二区之间的保护带。 在不同区域中使用不同的频率有助于优化数据存储介质的属性，并且保护带有助于优化不同区域的使用。

    TEMPERATURE INDUCED HEAD SKEW
    5.
    发明申请
    TEMPERATURE INDUCED HEAD SKEW 审中-公开
    温度感应头盔

    公开(公告)号：US20120044593A1

    公开(公告)日：2012-02-23

    申请号：US12860585

    申请日：2010-08-20

    申请人： Yong Xiao ,  Qiang Bi ,  Weisung Lee ,  Mingzhong Ding ,  Kiankeong Ooi

    发明人： Yong Xiao ,  Qiang Bi ,  Weisung Lee ,  Mingzhong Ding ,  Kiankeong Ooi

    IPC分类号： G11B27/36

    CPC分类号： G11B20/20 ,  G11B5/56 ,  G11B5/59627 ,  G11B19/046 ,  G11B2220/2516

    摘要： One way to minimize full DC head-skew re-calibrations rendered necessary by changes in storage media drive operating temperature is to compensate for temperature-induced DC head-skew using a known relationship between temperature-induced DC head-skew and storage media operating temperature. More specifically, a first DC head-skew is measured at a first arbitrary temperature of the storage media drive. A second DC head-skew is measured at a second arbitrary temperature of the storage media drive. A DC head-skew correction factor is calculated using the first and second DC head-skews at the first and second arbitrary temperatures. When a multi-head storage media drive is powered-up for operation, a temperature sensor located in the storage media drive assembly measures the current storage media drive temperature. The head-skew correction factor is applied based on the measured temperature to correct the DC head-skew.

    摘要翻译： 通过存储介质驱动器工作温度的变化使必要的全直流磁头偏移重新校准最小化的一种方法是使用温度引起的直流磁头偏移和存储介质工作温度之间的已知关系来补偿温度引起的直流磁头偏移 。 更具体地，在存储介质驱动器的第一任意温度下测量第一DC头偏移。 在存储介质驱动器的第二任意温度下测量第二DC头偏移。 使用第一和第二任意温度下的第一和第二DC头偏差来计算直流偏移校正系数。 当多头存储介质驱动器上电运行时，位于存储介质驱动器组件中的温度传感器测量当前的存储介质驱动器温度。 基于测量的温度应用头偏斜校正因子以校正DC头偏移。

    System and method for reducing ZAP time and track squeeze in a data storage device
    7.
    发明授权
    System and method for reducing ZAP time and track squeeze in a data storage device 有权
    用于减少ZAP时间并跟踪数据存储设备中的挤压的系统和方法

    公开(公告)号：US07457075B2

    公开(公告)日：2008-11-25

    申请号：US10785628

    申请日：2004-02-24

    申请人： Xiong Liu ,  Qiang Bi ,  TzeMing Jimmy Pang ,  ChoonKiat Lim

    发明人： Xiong Liu ,  Qiang Bi ,  TzeMing Jimmy Pang ,  ChoonKiat Lim

    IPC分类号： G11B5/596

    CPC分类号： G11B5/59605 ,  G11B19/045

    摘要： A method and apparatus for compensating for errors in servo systems. An improved zero acceleration path (ZAP) correction technique is provided, wherein selected tracks of a data storage device are used for ZAP processing in order to reduce the overall time required to perform error compensation for a storage device. For a given selected track to be ZAPed, track profiles of adjoining tracks are used in addition to the track profile of the selected track as part of the ZAP correction determination for the selected track. Using adjacent track profiles as part of the ZAP correction determination assists in mitigating AC track squeeze issues that would otherwise occur when performing selective track ZAPing.

    摘要翻译： 一种补偿伺服系统误差的方法和装置。 提供了一种改进的零加速路径（ZAP）校正技术，其中数据存储设备的选定轨道用于ZAP处理，以便减少对存储设备进行错误补偿所需的总体时间。 对于给定的所选轨道要ZAPed，除了所选轨道的轨道轮廓之外，还使用相邻轨道的轨道轮廓，作为所选轨道的ZAP校正确定的一部分。 使用相邻轨道配置文件作为ZAP校正确定的一部分有助于减轻执行选择性跟踪ZAPing时会发生的AC轨道挤压问题。

    Repeatable runout compensation using a learning algorithm with scheduled parameters
    8.
    发明授权
    Repeatable runout compensation using a learning algorithm with scheduled parameters 有权
    使用具有调度参数的学习算法可重复的跳动补偿

    公开(公告)号：US06437936B1

    公开(公告)日：2002-08-20

    申请号：US09489532

    申请日：2000-01-21

    申请人： YangQuan Chen ,  LeeLing Tan ,  KianKeong Ooi ,  Qiang Bi ,  KokHiang Cheong

    发明人： YangQuan Chen ,  LeeLing Tan ,  KianKeong Ooi ,  Qiang Bi ,  KokHiang Cheong

    IPC分类号： G11B5596

    CPC分类号： G11B5/59627

    摘要： A method and apparatus for compensating for written-in repeatable runout in a disc drive is provided. Compensation values are determined through an iterative learning process in which parameters of the learning process such as learning gain, servo loop gain, etc. are functions of the iteration number. The learning process also employs a nominal double integrator model of an actuator of the disc storage system. The learning process is also a function of a zero-phase low-pass filter.

    摘要翻译： 提供了用于补偿盘驱动器中的可写入可重复跳动的方法和装置。 通过迭代学习过程来确定补偿值，其中诸如学习增益，伺服循环增益等学习过程的参数是迭代次数的函数。 学习过程还采用盘存储系统的执行器的标称双积分器模型。 学习过程也是零相位低通滤波器的一个功能。

    Repeatable runout compensation using iterative learning control in a disc storage system
    9.
    发明授权
    Repeatable runout compensation using iterative learning control in a disc storage system 有权
    在盘存储系统中使用迭代学习控制可重复的跳动补偿

    公开(公告)号：US06563663B1

    公开(公告)日：2003-05-13

    申请号：US09474277

    申请日：1999-12-29

    申请人： Qiang Bi ,  Kevin A. Gomez ,  YangQuan Chen ,  KianKeong Ooi

    发明人： Qiang Bi ,  Kevin A. Gomez ,  YangQuan Chen ,  KianKeong Ooi

    IPC分类号： G11B5596

    CPC分类号： G11B5/59627 ,  G11B5/596

    摘要： A disc storage system is provided which includes a servo control loop for compensating for repeatable runout. Repeatable runout is compensated using table entries of the form Comp Value(k+1)=Comp Value(k)+K&PHgr;(z)RRO(k), where K is a learning rate; k is iteration number &PHgr;(z) is a filter and RRO(k) is the repeatable runout error. Further, &rgr;(j&ohgr;)=|1−K&PHgr;(j&ohgr;)/(1+PC(j&ohgr;)|

    摘要翻译： 提供了一种盘存储系统，其包括用于补偿可重复跳动的伺服控制回路。 可重复跳动使用Comp Value（k + 1）= Comp Value（k）+ KPHI（z）RRO（k）形式的表条目进行补偿，其中K是学习速率; k是迭代次数PHI（z）是滤波器，RRO（k）是可重复的跳动误差。 此外，需要满足rho（jomega）= | 1-KPHI（jomega）/（1 + PC（jomega）| <1），其中PC（jomega）是伺服环路的开环频率响应，滤波器可以包括 订单过滤器

    Real-time automatic loop-shaping for a disc drive servo control system
    10.
    发明授权
    Real-time automatic loop-shaping for a disc drive servo control system 有权

    公开(公告)号：US07054094B2

    公开(公告)日：2006-05-30

    申请号：US09896895

    申请日：2001-06-29

    申请人： Tao Zhang ,  Kevin Arthur Gomez ,  Qiang Bi ,  MingZhong Ding ,  Stephen Kow Chiew Kuan

    发明人： Tao Zhang ,  Kevin Arthur Gomez ,  Qiang Bi ,  MingZhong Ding ,  Stephen Kow Chiew Kuan

    IPC分类号： G11B5/596 ,  G11B21/02

    CPC分类号： G11B5/59627 ,  G11B5/59611 ,  G11B21/21

    摘要： An apparatus and method for improving servo loop performance in a disc drive storage system are provided. The servo loop includes a voice coil motor actuator that moves the head in response to a received servo control signal. A sensor, located in the head, senses servo information located on the disc and produces a servo signal therefrom. The servo signal is combined with a reference signal to produce a position error signal. A servo controller receives the position error signal and responsively produces the servo control signal. The servo controller includes a drive signal generator that receives the position error signal and responsively produces a driving energy signal. A vibration damping circuit receives the driving energy signal and responsively produces the servo control signal. A real-time adaptive loop shaping circuit, included in the servo loop, detects vibrations in the position error signal and responsively adjusts at least one parameter of a transfer function of the vibration damping circuit to reduce vibrations at different frequencies in the driving energy signal.