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    Multi-stage actuator disk drives, methods, and computer program products that compensate for repeatable runout based on estimated secondary actuator position
    4.
    发明授权
    Multi-stage actuator disk drives, methods, and computer program products that compensate for repeatable runout based on estimated secondary actuator position 有权
    多级执行器磁盘驱动器，方法和计算机程序产品，可根据估计的二次执行器位置补偿可重复的跳动

    公开(公告)号：US07145745B1

    公开(公告)日：2006-12-05

    申请号：US10932717

    申请日：2004-09-02

    申请人： Stan Shepherd ,  Jason Adler ,  Lin Guo ,  Xiaoping Hu ,  Yu Sun

    发明人： Stan Shepherd ,  Jason Adler ,  Lin Guo ,  Xiaoping Hu ,  Yu Sun

    IPC分类号： G11B5/596

    CPC分类号： G11B5/5552

    摘要： Methods of compensating for repeatable runout in a disk drive are provided. The disk drive includes a data storage disk, a transducer adjacent to the disk, a primary actuator for positioning the transducer over a first range of movement, and a secondary actuator for positioning the transducer over a second range of movement that is less than the first range of movement. Estimates are made of the position of the secondary actuator in the second range of movement. Data is read from the disk via the transducer. A position error signal is determined based on the read data. Positioning of the transducer by the primary actuator is controlled based on the estimated position of the secondary actuator in the second range of movement and based on the position error signal to compensate for repeatable runout.

    摘要翻译： 提供补偿磁盘驱动器中可重复跳动的方法。 磁盘驱动器包括数据存储盘，与盘相邻的换能器，用于在第一移动范围上定位换能器的主致动器，以及辅助致动器，用于将传感器定位在比第一移动范围小的第二移动范围 运动范围 在第二运动范围内由次级致动器的位置进行估计。 通过传感器从磁盘读取数据。 基于读取的数据确定位置误差信号。 基于在第二移动范围内的辅助致动器的估计位置并且基于位置误差信号来控制由主致动器定位换能器，以补偿可重复的跳动。

    Self-writing of servo patterns
    7.
    发明授权
    Self-writing of servo patterns 有权
    自动写入伺服模式

    公开(公告)号：US08879187B2

    公开(公告)日：2014-11-04

    申请号：US11714057

    申请日：2007-03-05

    申请人： Xin H. Yang ,  S. Craig Smith ,  Lin Guo

    发明人： Xin H. Yang ,  S. Craig Smith ,  Lin Guo

    IPC分类号： G11B5/596

    CPC分类号： G11B5/59666 ,  G11B5/59688

    摘要： Various embodiments of the present invention allow for the generation of at least one estimated value of a first parameter that is derived from a regularly measured value of a second parameter. In addition, a single control feedback signal can be adjusted via updating of the estimated and regularly measured values in a control feedback loop. At least one spiral track can be written to storage media based on the single control feedback signal, where the single control feedback signal can be received from an compensating circuit that receives the at least one estimated value of the first parameter, which can refer to position, and the at least one regularly measured value, which can refer to velocity.

    摘要翻译： 本发明的各种实施例允许生成从第二参数的规则测量值导出的第一参数的至少一个估计值。 此外，可以通过在控制反馈回路中更新估计的和规则的测量值来调整单个控制反馈信号。 至少一个螺旋轨道可以基于单个控制反馈信号写入存储介质，其中单个控制反馈信号可以从接收到第一参数的至少一个估计值的补偿电路接收，该估计值可以参考位置 ，以及可以参考速度的至少一个规则测量值。

    Suspension, head gimbal assembly and manufacturing method thereof, and disk drive unit with the same
    8.
    发明申请
    Suspension, head gimbal assembly and manufacturing method thereof, and disk drive unit with the same 有权
    悬架，头万向架组装及其制造方法以及具有该悬架的磁头驱动单元

    公开(公告)号：US20080266713A1

    公开(公告)日：2008-10-30

    申请号：US11790564

    申请日：2007-04-26

    申请人： MingGao Yao ,  YiRu Xie ,  Yu Sun ,  Lin Guo

    发明人： MingGao Yao ,  YiRu Xie ,  Yu Sun ,  Lin Guo

    IPC分类号： G11B5/60

    CPC分类号： G11B5/4853

    摘要： A suspension for a HGA includes a suspension flexure and an out trigger. The suspension flexure has a tongue region having a first flexure part in a tip portion thereof for mounting a trailing edge of a slider and a PZT mounting region for mounting PZT elements. One end of the out trigger is connected to the suspension flexure, and the other end of the out trigger has a trigger support portion which extends above the tongue region so as to support the leading edge of the slider. The structure of the out trigger is capable of stiffening the tongue region of the suspension flexure and, in turns, avoiding the deformation problem and the dimple separation problem during the manufacturing process or in vibration or shock events. The invention also discloses a HGA with the suspension, manufacturing methods of the HGA and a disk drive unit having such HGA.

    摘要翻译： 用于HGA的悬架包括悬架弯曲和外触发。 悬架挠曲件具有舌部区域，其顶端部具有用于安装滑动件的后缘的第一挠曲部分和用于安装PZT元件的PZT安装区域。 输出触发器的一端连接到悬架弯曲部，而触发器的另一端具有在舌部上方延伸的触发器支撑部分，以便支撑滑块的前缘。 出口触发器的结构能够加强悬架挠曲的舌部区域，并且反过来避免在制造过程中或振动或冲击事件期间的变形问题和凹坑分离问题。 本发明还公开了一种HGA，具有HGA的悬挂，制造方法和具有这种HGA的盘驱动单元。

    Disk drive head touchdown detection with improved discrimination
    9.
    发明授权
    Disk drive head touchdown detection with improved discrimination 有权
    磁盘驱动头触地得分检测具有改进的辨别力

    公开(公告)号：US07158325B1

    公开(公告)日：2007-01-02

    申请号：US10984559

    申请日：2004-11-08

    申请人： Xiaoping Hu ,  Yu Sun ,  Lin Guo ,  Don Brunnett

    发明人： Xiaoping Hu ,  Yu Sun ,  Lin Guo ,  Don Brunnett

    IPC分类号： G11B15/18

    CPC分类号： G11B5/59627 ,  G11B5/6076

    摘要： A disk drive detects head touchdown based on a magnitude of a position error signal at a discrete frequency. The discrete frequency is one-half the disk rotation frequency or an integral multiple of the disk rotation frequency. The head is heated by turning on a heater at the discrete frequency, thereby injecting bias into a servo system that increases the PES magnitude. In addition, the servo system has a first transfer function for tracking the head during read and write operations and a second transfer function for tracking the head during head touchdown detection. The second transfer function has smaller vibration rejection than the first transfer function so that the disk drive is less sensitive to vibration during read and write operations than during head touchdown detection.

    摘要翻译： 磁盘驱动器基于离散频率处的位置误差信号的大小来检测磁头触地。 离散频率是磁盘旋转频率的一半或磁盘旋转频率的整数倍。 通过以离散频率打开加热器来加热头部，从而将偏压注入到增加PES量值的伺服系统中。 此外，伺服系统具有用于在读取和写入操作期间跟踪头部的第一传递功能，以及用于在头部触地检测期间跟踪头部的第二传递功能。 第二传递函数具有比第一传递函数更小的振动抑制，使得磁盘驱动器在读取和写入操作期间比在头部触地检测期间对振动较不敏感。