公开(公告)号：US07489469B2

公开(公告)日：2009-02-10

申请号：US11724436

申请日：2007-03-15

申请人： Yu Sun ,  Don Brunnett ,  Lloyd Levy ,  Thomas O. Melrose

发明人： Yu Sun ,  Don Brunnett ,  Lloyd Levy ,  Thomas O. Melrose

IPC分类号： G11B5/596

CPC分类号： G11B5/59627 ,  G11B5/59633

摘要： Performing embedded runout correction for a track on a rotational data storage disk includes measuring written-in runout for the track, selecting a number of revolutions in response to the measured written-in runout of the track, calculating embedded correction values for the track for the selected number of revolutions of the rotational data storage disk, and storing the embedded correction values.

摘要翻译： 对旋转数据存储盘上的轨道执行嵌入式跳动校正包括测量轨道的写入跳动，响应于轨迹的测量写入跳动选择转数，计算轨道的嵌入校正值 选择旋转数据存储盘的转数，并存储嵌入的校正值。

公开(公告)号：US20070297088A1

公开(公告)日：2007-12-27

申请号：US11724436

申请日：2007-03-15

申请人： Yu Sun ,  Don Brunnett ,  Lloyd Levy ,  Thomas Melrose

发明人： Yu Sun ,  Don Brunnett ,  Lloyd Levy ,  Thomas Melrose

IPC分类号： G11B5/58

CPC分类号： G11B5/59627 ,  G11B5/59633

摘要： Performing embedded runout correction for a track on a rotational data storage disk includes measuring written-in runout for the track, selecting a number of revolutions in response to the measured written-in runout of the track, calculating embedded correction values for the track for the selected number of revolutions of the rotational data storage disk, and storing the embedded correction values.

摘要翻译： 对旋转数据存储盘上的轨道执行嵌入式跳动校正包括测量轨道的写入跳动，响应于轨迹的测量写入跳动选择转数，计算轨道的嵌入校正值 选择旋转数据存储盘的转数，并存储嵌入的校正值。

公开(公告)号：US06714376B1

公开(公告)日：2004-03-30

申请号：US09905564

申请日：2001-07-13

申请人： Don Brunnett ,  Lloyd Levy

发明人： Don Brunnett ,  Lloyd Levy

IPC分类号： G11B2102

CPC分类号： G11B5/59633

摘要： A method and apparatus for writing servo information to disks within a disk drive is disclosed. A servo track writer is used to write first servo information to the disks. The disk drive is then sealed, and the read/write heads within the disk drive are used to fill in second servo information. The first servo information includes digital information and A, B, C, and D servo bursts for a first number of tracks on the disks. The first servo information also includes digital information and A and B servo bursts for the remaining tracks on the disks. After the disk drive is sealed in the manufacturing process, the read/write heads within the disk drive fill in the second servo information, which includes C and D servo bursts for the remaining tracks. The read head reads the first servo information in the first number of tracks, and the position of the write head is adjusted based on the first servo information. The write head is then used to write the second servo information to a first remaining track, resulting in complete servo information for the first remaining track. The read head then reads the complete servo information in the first remaining track, and writes the second servo information for a second remaining track. This continues until the complete servo information is propagated to all of the remaining tracks.

摘要翻译： 公开了一种将伺服信息写入盘驱动器内的盘的方法和装置。 伺服记录器用于将第一伺服信息写入磁盘。 然后将磁盘驱动器密封，并且使用盘驱动器内的读/写磁头来填充第二伺服信息。 第一伺服信息包括磁盘上的第一数目磁道的数字信息和A，B，C和D伺服脉冲串。 第一伺服信息还包括用于磁盘上剩余磁道的数字信息和A和B伺服脉冲串。 在制造过程中密封磁盘驱动器之后，磁盘驱动器内的读/写磁头填充第二伺服信息，其中包括用于剩余磁道的C和D伺服脉冲串。 读取头读取第一数量的磁道中的第一伺服信息，并且基于第一伺服信息来调整写入头的位置。 然后使用写头将第二伺服信息写入第一剩余磁道，从而产生用于第一剩余磁道的完整伺服信息。 然后，读取头读取第一剩余轨道中的完整伺服信息，并写入第二剩余轨道的第二伺服信息。 这将继续，直到完整的伺服信息传播到所有剩余的轨道。

公开(公告)号：US07315431B1

公开(公告)日：2008-01-01

申请号：US11274809

申请日：2005-11-15

申请人： Stephen Perlmutter ,  Thomas Melrose ,  James Hargarten ,  Don Brunnett ,  Lloyd Levy ,  Adrián Cerdá

发明人： Stephen Perlmutter ,  Thomas Melrose ,  James Hargarten ,  Don Brunnett ,  Lloyd Levy ,  Adrián Cerdá

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： A disk drive measures the radial misposition of tracks and repositions the tracks at regularly spaced intervals. Written in runout (WRO) in servo bursts is determined to calculate track spacing and squeeze among adjacent tracks. Tracks with improper spacing are repositioned by adding a squeeze correction term to the servo wedges. Thereafter, when the disk drive operates to store data, the servo bursts are used to calculate a position error signal (PES), and the squeeze correction term is combined with the PES to position the head at a proper track radius.

摘要翻译： 磁盘驱动器测量轨道的径向偏移并以规则间隔的间隔重新定位轨道。 在伺服脉冲串中写入跳动（WRO）被确定为计算轨道间距并在相邻轨道之间挤压。 通过向伺服楔加一个挤压修正项来重新定位具有不正确间距的轨迹。 此后，当磁盘驱动器操作以存储数据时，使用伺服脉冲串来计算位置误差信号（PES），并将挤压校正项与PES组合以将磁头定位在适当的轨道半径处。

公开(公告)号：US06965491B1

公开(公告)日：2005-11-15

申请号：US10174484

申请日：2002-06-18

申请人： Stephen Perlmutter ,  Thomas Melrose ,  James Hargarten ,  Don Brunnett ,  Lloyd Levy ,  Adrián Cerdá

发明人： Stephen Perlmutter ,  Thomas Melrose ,  James Hargarten ,  Don Brunnett ,  Lloyd Levy ,  Adrián Cerdá

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： A disk drive measures the radial misposition of tracks and repositions the tracks at regularly spaced intervals. Written in runout (WRO) in servo bursts is determined to calculate track spacing and squeeze among adjacent tracks. Tracks with improper spacing are repositioned by adding a squeeze correction term to the servo wedges. Thereafter, when the disk drive operates to store data, the servo bursts are used to calculate a position error signal (PES), and the squeeze correction term is combined with the PES to position the head at a proper track radius.

摘要翻译： 磁盘驱动器测量轨道的径向偏移并以规则间隔的间隔重新定位轨道。 在伺服脉冲串中写入跳动（WRO）被确定为计算轨道间距并在相邻轨道之间挤压。 通过向伺服楔加一个挤压修正项来重新定位具有不正确间距的轨迹。 此后，当磁盘驱动器操作以存储数据时，使用伺服脉冲串来计算位置误差信号（PES），并将挤压校正项与PES组合以将磁头定位在适当的轨道半径处。

公开(公告)号：US20080030894A1

公开(公告)日：2008-02-07

申请号：US11740747

申请日：2007-04-26

申请人： YU SUN ,  Dave McMurtrey ,  Bruce Liikanen ,  Don Brunnett ,  John VanLaanen ,  Charles Watt ,  Stanley Shepherd ,  S. Smith ,  Todd Franks ,  Lin Guo

发明人： YU SUN ,  Dave McMurtrey ,  Bruce Liikanen ,  Don Brunnett ,  John VanLaanen ,  Charles Watt ,  Stanley Shepherd ,  S. Smith ,  Todd Franks ,  Lin Guo

IPC分类号： G11B17/08

CPC分类号： G11B25/043 ,  G11B5/59627 ,  G11B5/59661 ,  G11B5/59666

摘要： In accordance with various embodiments, a rotatable member is mounted to a spindle hub so that initial servo data previously provided to the rotatable member are eccentrically offset with respect to a rotational center of the spindle hub. Compensation vales are determined to characterize said offset, after which final servo data are provided to the rotatable member in relation to the initial servo data and the determined compensation values. The final servo data are nominally concentric with the rotational center of the spindle hub.

摘要翻译： 根据各种实施例，可旋转构件安装到主轴毂，使得先前提供给可旋转构件的初始伺服数据相对于主轴毂的旋转中心偏心偏移。 确定补偿值以表征所述偏移，之后相对于初始伺服数据和确定的补偿值将最终伺服数据提供给可旋转构件。 最终伺服数据名义上与主轴毂的旋转中心同心。

公开(公告)号：US06785080B1

公开(公告)日：2004-08-31

申请号：US09974454

申请日：2001-10-09

申请人： Yu Sun ,  Don Brunnett ,  XiaoPing Hu

发明人： Yu Sun ,  Don Brunnett ,  XiaoPing Hu

IPC分类号： G11B2102

CPC分类号： G11B5/59622

摘要： A method and apparatus for controlling the position of a disk drive transducer head relative to a target track are provided. An oversampled control output allows frequencies that are higher than the Nyquist frequency of the servo control system to be filtered. The system initiates a plurality of control outputs during a single sampling period, allowing the use of a single processor interrupt for each sampling period. The outputs initiated during a single sampling period may be of unequal length. In addition, the outputs may be proportioned so that the total control energy provided to the actuator is equal to the control energy that would be provided by control outputs initiated every one-half sampling period.

摘要翻译： 提供了一种用于控制盘驱动器换能器头相对于目标轨道的位置的方法和装置。 过采样控制输出允许高于伺服控制系统的奈奎斯特频率的频率进行滤波。 系统在单个采样周期内启动多个控制输出，允许在每个采样周期使用单个处理器中断。 在单个采样周期期间发起的输出可能具有不相等的长度。 此外，输出可以成比例，使得提供给致动器的总控制能量等于由每半个采样周期启动的控制输出将提供的控制能量。

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。

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。

公开(公告)号：US07679851B1

公开(公告)日：2010-03-16

申请号：US11122838

申请日：2005-05-05

申请人： Yu Sun ,  Don Brunnett ,  Lin Guo

发明人： Yu Sun ,  Don Brunnett ,  Lin Guo

IPC分类号： G11B5/09

CPC分类号： G11B5/59616 ,  G11B5/012

摘要： Methods and structure for switching heads on a multiple recording surface disk drive that uses bi-directional radial writing toward a zipper zone at a middle diameter. When switching from a first head to a second head, features and aspects hereof assure that the second head will not be positioned in the zipper zone of the corresponding second surface and hence will not lose track following servo synchronization and control. In one aspect, added buffer or guard tracks having valid servo information but no data are added on either side of the zipper zone to assure that under the worst-case misalignment of surfaces the second head will not be positioned in its corresponding zipper zone when switching from the first head.

摘要翻译： 在多个记录表面磁盘驱动器上切换磁头的方法和结构，其使用向中间直径的拉链区域进行双向径向书写。 当从第一头切换到第二头部时，其特征和方面确保第二头部不会被定位在相应的第二表面的拉链区域中，因此在伺服同步和控制之后不会失去跟踪。 在一个方面，在拉链区域的任一侧添加了具有有效的伺服信息而没有数据的附加的缓冲器或保护轨道，以确保在最差的表面未对准的情况下，当切换时，第二头部将不位于相应的拉链区域 从第一个头。