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    TRANSDUCER FLY HEIGHT DISTRIBUTION RANGE REDUCTION
    4.
    发明申请
    TRANSDUCER FLY HEIGHT DISTRIBUTION RANGE REDUCTION 审中-公开
    传感器飞行高度分布范围减小

    公开(公告)号：US20080030888A1

    公开(公告)日：2008-02-07

    申请号：US11751940

    申请日：2007-05-22

    申请人： DON BRUNNETT ,  Jingbo Yu ,  Pang Tan

    发明人： DON BRUNNETT ,  Jingbo Yu ,  Pang Tan

    IPC分类号： G11B21/21

    CPC分类号： G11B5/59666 ,  G11B5/6058 ,  G11B5/6064 ,  G11B5/607

    摘要： Preferred embodiments of the present invention are generally directed to reducing variation in a distribution of transducer fly heights by selectively applying first and second fly height adjustment values to a plurality of transducers, the second fly height adjustment value being a multiple of the first fly height adjustment value.

    摘要翻译： 本发明的优选实施例通常是通过选择性地对多个换能器施加第一和第二飞行高度调节值来减少换能器飞行高度的分布的变化，第二飞行高度调节值是第一飞行高度调节的倍数 值。

    Method for providing variable gain, iterative embedded runout correction in a disk drive
    5.
    发明授权
    Method for providing variable gain, iterative embedded runout correction in a disk drive 有权
    在磁盘驱动器中提供可变增益，迭代嵌入的跳动校正的方法

    公开(公告)号：US07167336B1

    公开(公告)日：2007-01-23

    申请号：US10410576

    申请日：2003-04-08

    申请人： Richard M. Ehrlich ,  Don Brunnett ,  Yu Sun

    发明人： Richard M. Ehrlich ,  Don Brunnett ,  Yu Sun

    IPC分类号： G11B5/596

    CPC分类号： G11B5/59627

    摘要： A method for determining embedded runout correction (ERC) values using iteration and variable gain in a disk drive. A disk has a track written thereon, an ERC value is determined for a servo sector on the track using variable gain, and the variable gain decreases based on the number of revolutions of the disk.

    摘要翻译： 一种使用磁盘驱动器中的迭代和可变增益来确定嵌入式跳动校正（ERC）值的方法。 磁盘具有写入的轨道，使用可变增益确定轨道上的伺服扇区的ERC值，并且可变增益基于盘的转数而减小。

    Method and apparatus for determining embedded runout correction values
    6.
    发明授权
    Method and apparatus for determining embedded runout correction values 有权
    确定嵌入式跳动校正值的方法和装置

    公开(公告)号：US07054096B1

    公开(公告)日：2006-05-30

    申请号：US10338047

    申请日：2003-01-06

    申请人： Yu Sun ,  Lin Guo ,  Don Brunnett

    发明人： Yu Sun ,  Lin Guo ,  Don Brunnett

    IPC分类号： G11B5/596

    CPC分类号： G11B5/59627 ,  G11B5/59633 ,  G11B5/59666

    摘要： A method and apparatus for compensating for non-linearities due to pivot bearing friction when determining embedded runout correction values during partial self-servo write of a disk drive is disclosed. In one embodiment, the disk drive includes a disk surface having a track written thereon and the track has some written-in runout. The written-in runout that is associated with high-frequencies is determined using a first technique. The written-in runout for the track that is associated with low frequencies is determined using a second technique. Results from the two techniques are combined in order to determine embedded runout correction values for the track when partial self-servo writing, in order to reduce error propagation when writing additional tracks.

    摘要翻译： 公开了一种在磁盘驱动器的部分自伺服写入期间确定嵌入的跳动校正值时补偿由于枢转轴承摩擦导致的非线性的方法和装置。 在一个实施例中，盘驱动器包括具有写在其上的轨道的盘表面，并且轨道具有一些写入的跳动。 使用第一技术确定与高频相关联的写入跳动。 使用第二种技术确定与低频相关的轨道的写入跳动。 组合两种技术的结果，以便在部分自伺服写入时确定轨道的嵌入式跳动校正值，以便在写入附加轨道时减少误差传播。

    Method and apparatus for data storage in a disk drive
    7.
    发明授权
    Method and apparatus for data storage in a disk drive 有权
    数据存储在磁盘驱动器中的方法和装置

    公开(公告)号：US06924952B1

    公开(公告)日：2005-08-02

    申请号：US09923910

    申请日：2001-08-06

    申请人： Don Brunnett ,  Uwe Schwiegelshohn ,  Steve McCarthy

    发明人： Don Brunnett ,  Uwe Schwiegelshohn ,  Steve McCarthy

    IPC分类号： G06F3/06 ,  G11B5/09 ,  G11B20/10 ,  G11B20/12 ,  G11B27/36

    CPC分类号： G06F3/0619 ,  G06F3/064 ,  G06F3/0674 ,  G11B5/09 ,  G11B20/10 ,  G11B20/1252 ,  G11B27/36 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2220/20 ,  G11B2220/2516

    摘要： A method and apparatus for increasing formatting efficiency of a disk drive is disclosed. In one embodiment, a method for storing data in a disk drive is provided. The disk drive is coupled to a computer via an interface. The method includes the steps of storing data on a disk surface in a disk block having a predetermined length; and, presenting data from the disk drive to the interface as a host block having a predetermined length, wherein the predetermined length of the disk block is equal to N times the predetermined length of the host block, where N is a natural number greater than 1. In one embodiment, a read/modify/write procedure is provided to ensure that data is not lost when a power failure occurs during a write operation when the number of host blocks being written is not a multiple of N.

    摘要翻译： 公开了一种用于提高磁盘驱动器的格式化效率的方法和装置。 在一个实施例中，提供了一种用于将数据存储在磁盘驱动器中的方法。 磁盘驱动器经由接口耦合到计算机。 该方法包括以下步骤：将数据存储在具有预定长度的盘块中的盘表面上; 并且将来自磁盘驱动器的数据呈现为具有预定长度的主机块的接口，其中盘块的预定长度等于主机块的预定长度的N倍，其中N是大于1的自然数 在一个实施例中，提供读/修改/写入过程以确保在写入操作期间发生电源故障时数据不会丢失，当正在写入的主机块的数量不是N的倍数时。

    Dynamic off-track detector
    8.
    发明授权
    Dynamic off-track detector 失效
    动态离轨检测器

    公开(公告)号：US06882489B1

    公开(公告)日：2005-04-19

    申请号：US09639567

    申请日：2000-08-15

    申请人： Don Brunnett ,  John Purkett ,  Bruce Liikanen

    发明人： Don Brunnett ,  John Purkett ,  Bruce Liikanen

    IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B15/04 ,  G11B15/087 ,  G11B19/04

    CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B19/04

    摘要： A method and apparatus for dynamically detecting write fault errors is provided. According to the invention, transducer head control parameters are adjusted according to observed events. For instance, off-track events of a certain magnitude may trigger the implementation of a severe shock timer, which lengthens the delay between the off-track event and allowing write operations to resume, as compared to the standard off-track timer. According to another embodiment of the present invention, a lower write fault threshold is implemented following an off-track event of sufficient magnitude. According to yet another embodiment of the present invention, the average or accumulated position error of the transducer head is monitored, and a lower write fault threshold implemented if the average position error exceeds a threshold value. The present invention's provision of a method and apparatus that enables transducer head control parameters to be modified in response to observed off-track events allows the disk drive to provide high resistance to data loss without significant detrimental effects on the data throughput performance of the disk drive.

    摘要翻译： 提供了用于动态检测写入故障错误的方法和装置。 根据本发明，根据观察到的事件来调整传感器头控制参数。 例如，与标准离线定时器相比，具有一定幅度的偏离轨迹事件可能触发实施严重的冲击定时器，其延长了偏离轨道事件之间的延迟并允许写入操作恢复。 根据本发明的另一个实施例，在足够大的偏离轨迹事件之后实现较低写入故障阈值。 根据本发明的另一个实施例，监测换能器头的平均或累积的位置误差，并且如果平均位置误差超过阈值，则实现较低的写入故障阈值。 本发明提供一种能够响应于观察到的偏离轨道事件来修改传感器头部控制参数的方法和装置，使得磁盘驱动器能够对数据丢失提供高抵抗力，而不会对磁盘​​驱动器的数据吞吐量性能造成显着的不利影响 。

    Firmware controlled backup in disk drives
    9.
    发明授权
    Firmware controlled backup in disk drives 有权
    磁盘驱动器中的固件控制备份

    公开(公告)号：US06792517B1

    公开(公告)日：2004-09-14

    申请号：US10173560

    申请日：2002-06-18

    申请人： Don Brunnett ,  Erhard Schreck

    发明人： Don Brunnett ,  Erhard Schreck

    IPC分类号： G06F1200

    CPC分类号： G06F11/1456 ,  Y10S707/99953 ,  Y10S707/99955

    摘要： A personal computer hard disk has disk media that comprises a primary portion and a backup portion; both portions are in the same hard disk housing. The backup portion is logically separate from the primary portion, and access to the logically separate backup portion is controlled by a backup access control mechanism. The backup access control mechanism may comprise a manually-actuable mechanism, such as a switch or a jumper, or it may comprise software provided in an ROM forming part of the internal memory of the hard disk.

    摘要翻译： 个人计算机硬盘具有包括主要部分和备用部分的盘介质; 两部分都在相同的硬盘外壳中。 备份部分在逻辑上与主要部分分离，对逻辑上独立的备份部分的访问由备份访问控制机制控制。 备用存取控制机构可以包括诸如开关或跳线的手动致动机构，或者它可以包括提供在形成硬盘的内部存储器的一部分的ROM中的软件。