公开(公告)号：US20070139809A1

公开(公告)日：2007-06-21

申请号：US11637257

申请日：2006-12-11

申请人： Bruce Liikanen ,  Thomas Melrose

发明人： Bruce Liikanen ,  Thomas Melrose

IPC分类号： G11B21/02 ,  G11B15/04

CPC分类号： G11B19/04 ,  G11B5/59627 ,  G11B5/59666

摘要： An apparatus and associated method is provided for observing a positional misplacement of a control object at a first commanded position, defining a fault threshold as a function of the observed positional misplacement, and signaling a write unsafe command to the control object in relation to comparing an instantaneous positional misplacement of the control object to the defined fault threshold during self servo writing with the control object.

摘要翻译： 提供了一种装置和相关联的方法，用于观察在第一命令位置处的控制对象的位置错位，定义作为观察到的位置错位的函数的故障阈值，并且向控制对象发信号通知写入不安全命令 在与控制对象进行自伺服写入期间，控制对象瞬时位置偏移到定义的故障阈值。

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：US06940679B1

公开(公告)日：2005-09-06

申请号：US10008263

申请日：2001-11-07

申请人： Michael McNeil ,  Thomas Melrose ,  Keith Malang

发明人： Michael McNeil ,  Thomas Melrose ,  Keith Malang

IPC分类号： G11B5/596

CPC分类号： G11B5/59688 ,  G11B5/012 ,  G11B5/59627

摘要： A disk drive utilizes a track dependent variable write fault gate for each of the transducers within the drive. By deriving a 3 sigma distribution across the repeatable run out (RRO) and the non-repeatable run out (NRRO), a position error signal (PES) is derived which varies in magnitude across the stroke of the transducers and which has a slope used to derive variable write fault gate thresholds for the tracks associated with each transducer. As the stroke of the transducer moves from the outer diameter (OD) to the inner diameter (ID), the magnitude of the write fault gate thresholds may be decreased relative to the PES, and track density and capacity may increase where PES and write fault gate thresholds are low. The invention thus maintains a constant hard error recovery margin across the stroke.

摘要翻译： 磁盘驱动器为驱动器内的每个换能器使用跟踪因变量写入故障门。 通过导出跨越可重复运行（RRO）和不可重复运行（NRRO）的3西格玛分布，导出位移误差信号（PES），该位置误差信号（PES）在换能器的冲程上的幅度变化，并且具有使用的斜率 以导出与每个换能器相关联的轨迹的可变写入故障门阈值。 当传感器的行程从外径（OD）移动到内径（ID）时，写故障门阈值的大小可以相对于PES减小，并且轨道密度和容量可能增加，其中PES和写入故障 门限低。 因此，本发明在整个冲程中保持恒定的硬误差恢复余量。

公开(公告)号：US20070096678A1

公开(公告)日：2007-05-03

申请号：US11592340

申请日：2006-11-03

申请人： Thomas Melrose

发明人： Thomas Melrose

IPC分类号： G05B1/06

CPC分类号： G05B19/251 ,  G05B2219/41203 ,  G05B2219/41207

摘要： Apparatus and method for compensating for positional indicia misplacements in the positioning of a control object, such as with servo seam misplacements on a data storage device storage medium. An actual position for the control object is determined in relation to a corrected commanded position of the control object and a corrected position error of the control object. The corrected commanded position is determined in relation to a gain error and an actual commanded position, and the corrected position error determined in relation to the gain error and an actual position error. Preferably, an actual position error of the control object is next determined in relation to the actual position, and the control object is moved to reduce the actual position error. The positional indicia preferably comprise AB and CD seams of ABCD servo dibit patterns on a recording surface.

摘要翻译： 用于补偿控制对象的定位中的位置标记错位的装置和方法，例如在数据存储设备存储介质上的伺服接缝错位。 控制对象的实际位置是根据控制对象的校正命令位置和控制对象的校正位置误差来确定的。 相对于增益误差和实际指令位置确定校正的指令位置，并且相对于增益误差和实际位置误差确定校正的位置误差。 优选地，接下来相对于实际位置确定控制对象的实际位置误差，移动控制对象以减少实际位置误差。 位置标记优选地包括在记录表面上的ABCD伺服双位图案的AB和CD接缝。

公开(公告)号：US07106547B1

公开(公告)日：2006-09-12

申请号：US10318316

申请日：2002-12-11

申请人： James Hargarten ,  Thomas Melrose

发明人： James Hargarten ,  Thomas Melrose

IPC分类号： G11B5/596

CPC分类号： G11B5/59627 ,  G11B5/59694

摘要： A method and apparatus for determining embedded runout correction values uses a closed-loop system (with feedback) in a disk drive. Optionally, the embedded runout correction values may be determined after the disk drive has been manufactured and placed in the field. In addition, the embedded runout correction values may be updated after the disk drive has been manufactured and placed in the field.

摘要翻译： 用于确定嵌入式跳动校正值的方法和装置使用磁盘驱动器中的闭环系统（带有反馈）。 可选地，可以在磁盘驱动器已经被制造并放置在现场中之后确定嵌入的跳动校正值。 此外，在磁盘驱动器已经被制造并放置在现场之后，可以更新嵌入的跳动校正值。

公开(公告)号：US06947249B1

公开(公告)日：2005-09-20

申请号：US10029528

申请日：2001-12-20

申请人： Jim Hargarten ,  Thomas Melrose ,  John Purkett

发明人： Jim Hargarten ,  Thomas Melrose ,  John Purkett

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： A method and apparatus for automatically determining an embedded runout correction threshold for a disk drive are disclosed. In prior systems, embedded runout correction thresholds were set for all disk drives in a production run. The present invention provides a technique for automatically determining an embedded runout correction threshold on a drive-by-drive basis, instead of a production run of drives basis.

摘要翻译： 公开了一种用于自动确定磁盘驱动器的嵌入式跳动校正阈值的方法和装置。 在现有系统中，在生产运行中为所有磁盘驱动器设置了嵌入式跳动校正阈值。 本发明提供了一种用于在逐个驱动的基础上自动确定嵌入式跳动校正阈值的技术，而不是基于驱动器的生产运行。

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：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：US06549362B1

公开(公告)日：2003-04-15

申请号：US09753969

申请日：2001-01-02

申请人： Thomas Melrose ,  Andy Ottele ,  Jim Hargarten ,  Dave Finamore

发明人： Thomas Melrose ,  Andy Ottele ,  Jim Hargarten ,  Dave Finamore

IPC分类号： G11B5596

CPC分类号： G11B5/59627

摘要： A method and apparatus for the enhancement of embedded runout correction in a disk drive is provided. According to the present invention, embedded runout correction values are obtained by convolving a position error signal due to repeatable runout for a track with an inverse impulse response describing the response of a transducer head servo system to a given input. According to the present invention, the inverse impulse response is determined by introducing an impulse to a transducer head servo system, and measuring the response of the system in the time domain. The response is transformed to the frequency domain to form an error transfer function, the reciprocal is taken, and the function is transformed back into the time domain. The inverse impulse response, according to the present invention, is obtained for at least every transducer head in a disk drive capable of addressing a track for which embedded runout correction is desired. The embedded runout correction values may be calculated without the use of a servo track writer.

摘要翻译： 提供了一种用于增强磁盘驱动器中的嵌入式跳动校正的方法和装置。 根据本发明，通过将具有描述转换器头伺服系统的响应的反冲激响应的轨道的位置误差信号由于可重复的跳动卷积到给定的输入来获得嵌入的跳动校正值。 根据本发明，通过将脉冲引入到换能器头伺服系统，并测量系统在时域中的响应来确定逆脉冲响应。 将响应转换为频域以形成误差传递函数，进行倒数，并将该函数转换回时域。 根据本发明的反冲激响应是针对能够寻址希望嵌入跳动校正的轨道的磁盘驱动器中的至少每个换能器头而获得的。 可以在不使用伺服轨迹写入器的情况下计算嵌入的跳动校正值。