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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。

    Head-disc assembly with embedded product identification code
    7.
    发明授权
    Head-disc assembly with embedded product identification code 失效
    头盘组件带有嵌入式产品识别码

    公开(公告)号：US06731444B2

    公开(公告)日：2004-05-04

    申请号：US09872945

    申请日：2001-06-01

    申请人： JackMing Teng ,  BaoHong Liu ,  KianKeong Ooi ,  WingKong Chiang ,  Mingzhong Ding ,  BengWee Quak ,  Djunaedy Chandra Ang

    发明人： JackMing Teng ,  BaoHong Liu ,  KianKeong Ooi ,  WingKong Chiang ,  Mingzhong Ding ,  BengWee Quak ,  Djunaedy Chandra Ang

    IPC分类号： G11B509

    CPC分类号： G11B27/3027 ,  G11B5/012 ,  G11B2220/20

    摘要： An apparatus and method for writing a product information code (PIC) to a head-disc assembly (HDA) of a disc drive data handling system to facilitate subsequent identification of the HDA. The PIC is configured as a sequence of n multi-bit encoded words. Servo data are written to a disc of the HDA as a number of p angularly spaced apart servo data fields, the servo data used by a servo control circuit to effect head positional control. The n encoded words are distributed across a subset n of the p servo data fields so that the n encoded words replace at least a portion of the servo data in the n servo data fields. Preferably, the n encoded words are written to Gray code (track address) fields of the n servo data fields and are provided with error detection and correction capabilities.

    摘要翻译： 一种用于将产品信息代码（PIC）写入到盘驱动器数据处理系统的头盘组件（HDA）中以便于随后识别HDA的装置和方法。 PIC被配置为n个多位编码字的序列。 将伺服数据作为多个p个角度间隔开的伺服数据字段写入HDA的盘，伺服数据由伺服控制电路用于实现头部位置控制。 n个编码字分布在p个伺服数据字段的子集n上，使得n个编码字替代n个伺服数据字段中的伺服数据的至少一部分。 优选地，将n个编码字写入n个伺服数据字段的格雷码（轨道地址）字段，并提供错误检测和校正能力。

    Detection and cancellation of cage frequency using the clock head in a servowriter
    8.
    发明授权
    Detection and cancellation of cage frequency using the clock head in a servowriter 失效
    使用伺服驱动器中的时钟头来检测和消除笼式频率

    公开(公告)号：US06628471B1

    公开(公告)日：2003-09-30

    申请号：US09798801

    申请日：2001-03-02

    申请人： ShuangQuan Min ,  Ricky WeiWatt Yeo ,  KianKeong Ooi ,  Xiong Liu ,  BengWee Quak ,  ChiapHeok Ang

    发明人： ShuangQuan Min ,  Ricky WeiWatt Yeo ,  KianKeong Ooi ,  Xiong Liu ,  BengWee Quak ,  ChiapHeok Ang

    IPC分类号： G11B2102

    CPC分类号： G11B5/59627 ,  G11B5/59633

    摘要： The magnitude and frequency of runout due to vibration of the cage of the spindle motor is detected. A plurality of servo patterns are written to a reference track having a clock pattern on the disc, and the plurality of servo patterns are then read over a plurality of revolutions of the disc using a clock head. The magnitude of position error of the clock head relative to the reference track is identified for each of the read servo patterns. The magnitude and frequency of runout due to cage vibration is identified from the position errors. Servo patterns are written to user tracks on the disc by identifying periods of low magnitude runout due to cage vibration, and writing the servo patterns to the user track during those periods of low magnitude runout.

    摘要翻译： 检测到由主轴电机的保持架振动引起的跳动的幅度和频率。 将多个伺服模式写入到具有盘上的时钟图案的参考轨道，然后使用时钟头在盘的多个转圈上读取多个伺服模式。 为每个读取的伺服模式识别时钟磁头相对于参考磁道的位置误差的大小。 从位置误差中确定由于保持架振动引起的跳动的幅度和频率。 通过识别由于笼振动引起的低幅度跳动的周期，并且在低幅度跳动期间将伺服模式写入用户轨迹，将伺服模式写入盘上的用户轨道。

    Temperature compensation of seek profiles in data storage devices
    9.
    发明授权
    Temperature compensation of seek profiles in data storage devices 失效
    数据存储设备中查找配置文件的温度补偿

    公开(公告)号：US06995946B2

    公开(公告)日：2006-02-07

    申请号：US10608046

    申请日：2003-06-27

    申请人： Mingzhong Ding ,  KianSoon Yeo ,  JianYi Wang ,  KianKeong Ooi ,  BengWee Quak

    发明人： Mingzhong Ding ,  KianSoon Yeo ,  JianYi Wang ,  KianKeong Ooi ,  BengWee Quak

    IPC分类号： G11B5/55

    CPC分类号： G11B5/5582 ,  G11B5/5547 ,  G11B5/5565

    摘要： Methods relating to compensating a pre-defined seek profile for use in a data storage device, such as a disc drive, to manage the internal temperature of the device are disclosed. One embodiment disclosed is related to determining a seek profile compensation value that can be used to compensate the pre-defined seek profile for temperature. Another embodiment is a method of using a seek profile compensation value during device operation to maintain the data storage device operating temperature below an operating temperature threshold. Yet another embodiment of the present invention may be thought of as a controller for a data storage device. The controller comprises a microprocessor having a pre-determined seek profile and a means for compensating the pre-determined seek profile based on a current operating temperature.

    摘要翻译： 公开了关于补偿用于诸如盘驱动器的数据存储设备中的预定义搜索简档以管理设备的内部温度的方法。 所公开的一个实施例涉及确定可以用于补偿温度的预定义搜索曲线的寻道曲线补偿值。 另一实施例是在设备操作期间使用寻道配置文件补偿值来将数据存储设备工作温度维持在低于工作温度阈值的方法。 本发明的另一个实施例可以被认为是用于数据存储设备的控制器。 控制器包括具有预定寻找简档的微处理器和用于基于当前工作温度补偿预定寻找简档的装置。

    Method and apparatus for handling multiple resonance frequencies in disc drives using active damping
    10.
    发明授权
    Method and apparatus for handling multiple resonance frequencies in disc drives using active damping 有权
    用于使用主动阻尼处理磁盘驱动器中的多个共振频率的方法和装置

    公开(公告)号：US06690534B2

    公开(公告)日：2004-02-10

    申请号：US09827339

    申请日：2001-04-05

    申请人： MingZhong Ding ,  YangQuan Chen ,  LeeLing Tan ,  Wing Kong Chiang ,  KianKeong Ooi ,  BengWee Quak

    发明人： MingZhong Ding ,  YangQuan Chen ,  LeeLing Tan ,  Wing Kong Chiang ,  KianKeong Ooi ,  BengWee Quak

    IPC分类号： G11B5596

    CPC分类号： G11B5/5582

    摘要： A method of handling multiple resonance frequencies in a disc drive includes monitoring a position error signal (PES) for an actuator arm, generating a plurality of feedforward compensation signals from the PES using a plurality of bandpass filters, and applying the compensation signals to a servo control signal. Each filter has a center frequency that is set to a problematic resonance frequency. The method may also include identifying the problematic frequencies by, for example, commanding a movement of the actuator arm, collecting data points for the PES that are associated with the movement, and performing a digital fourier transform of the data points to identify resonant frequencies. Other methods of identifying problematic frequencies include analyzing PES zero-crossing data, or using principal component analysis.

    摘要翻译： 一种在盘驱动器中处理多个共振频率的方法包括监视致动器臂的位置误差信号（PES），使用多个带通滤波器从PES产生多个前馈补偿信号，并将补偿信号施加到伺服 控制信号。 每个滤波器的中心频率被设置为有问题的共振频率。 该方法还可以包括通过例如指令致动器臂的移动来收集有问题的频率，收集与移动相关联的PES的数据点，以及执行数据点的数字傅里叶变换以识别共振频率。 识别有问题频率的其他方法包括分析PES过零数据，或使用主成分分析。