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1.发明授权
公开(公告)号：US5844742A
公开(公告)日：1998-12-01
申请号：US735924
申请日：1996-10-24
CPC分类号： G11B5/5534 , G11B21/10 , G11B21/106 , G11B5/59633 , G11B5/59644
摘要： During a write revolution of a storage medium, a transition is written on the storage medium while servoing on another transition previously recorded on the storage medium. During that write revolution, a position error signal corresponding to the position error of the transducer relative to the previously recorded transition is determined. That position error signal is then stored, during the write revolution, to be used in computing a reference track value associated with the transition being written in order to correct for the position error
摘要翻译： 在存储介质的写入转动期间，在先前记录在存储介质上的另一个转换上进行伺服处理，在存储介质上写入转换。 在该写入旋转期间，确定对应于换能器相对于先前记录的转变的位置误差的位置误差信号。 然后，在写入旋转期间，存储该位置误差信号以用于计算与被写入的转换相关联的参考轨迹值，以便校正位置误差
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公开(公告)号：US5659436A
公开(公告)日：1997-08-19
申请号：US405261
申请日：1995-03-16
CPC分类号： G11B5/5534 , G11B21/10 , G11B21/106 , G11B5/59633 , G11B5/59644
摘要： A mechanism for servowriting on a storage medium of a storage device. The storage device has a transducer and a servo loop for positioning the transducer with respect to the storage medium. At least one transition is written on a track of the storage medium, while servoing on other transitions previously recorded on the storage medium. A reference waveform is derived as a function of a closed loop response of the servo loop and a position error waveform. The position error waveform corresponds to one or more position errors of the transducer relative to the previously recorded transitions. The reference waveform is usable in writing subsequent tracks on the storage medium. Using the reference waveform for writing subsequent tracks provides a substantial rejection of mechanical disturbances by the servo loop.
摘要翻译： 一种用于在存储设备的存储介质上进行伺服驱动的机制。 存储装置具有用于相对于存储介质定位换能器的换能器和伺服回路。 至少一个转换被写在存储介质的轨道上，同时伺服在先前记录在存储介质上的其它转换。 作为伺服环路的闭环响应和位置误差波形的函数导出参考波形。 位置误差波形对应于传感器相对于先前记录的转换的一个或多个位置误差。 参考波形可用于将后续轨道写入存储介质上。 使用参考波形写入后续轨道可以显着抑制伺服回路的机械扰动。
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公开(公告)号：US5901003A
公开(公告)日：1999-05-04
申请号：US628910
申请日：1996-04-08
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
CPC分类号： G11B19/04 , G11B21/106 , G11B5/5565 , G11B5/59633
摘要： Improvements in placement of timing patterns in self servo writing include correcting for random and systematic errors due to geometric effects. In a disk drive having a recording head with separate read and write elements, a method for determining separation between the elements and for correcting for such errors as a function of skew angle between the head and the disk. Errors resulting from misalignment and non-parallelism of the elements as well as misalignment of the head on it its actuator are also detected and corrected. Errors due to changes in rotational velocity of the disk and misplacement of timing patterns with respect to adjacent timing patterns are detected and corrected. In general, a single revolution process may be used to both write and detect random errors on each track and corrected on subsequent tracks.
摘要翻译： 自动写入中定时模式布置的改进包括纠正由于几何效应引起的随机和系统误差。 在具有具有分离的读取和写入元件的记录头的磁盘驱动器中，确定元件之间的间隔并用于校正这种错误的方法，其作为头部和盘之间的歪斜角的函数。 元件的不对准和不平行度导致的误差以及头部在其致动器上的未对准性也被检测和校正。 检测并纠正由于盘的旋转速度的变化引起的错误和定时图案相对于相邻的定时图案的错位。 通常，可以使用单次旋转处理来写入和检测每个轨道上的随机误差并在随后的轨道上进行校正。
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4.发明授权
公开(公告)号：US5907447A
公开(公告)日：1999-05-25
申请号：US893316
申请日：1997-07-16
CPC分类号： G11B21/106 , G11B21/10 , G11B5/59633 , G11B5/59644
摘要： A mechanism for servowriting on a storage medium of a storage device. The storage device has a transducer and a servo loop for positioning the transducer with respect to the storage medium. At least one transition is written on a track of the storage medium, while servoing on other transitions previously recorded on the storage medium. A reference waveform is derived as a function of a closed loop response of the servo loop and a position error waveform. The position error waveform corresponds to one or more position errors of the transducer relative to the previously recorded transitions. The reference waveform is usable in writing subsequent tracks on the storage medium. Using the reference waveform for writing subsequent tracks provides a substantial rejection of mechanical disturbances by the servo loop.
摘要翻译： 一种用于在存储设备的存储介质上进行伺服驱动的机制。 存储装置具有用于相对于存储介质定位换能器的换能器和伺服回路。 至少一个转换被写在存储介质的轨道上，同时伺服在先前记录在存储介质上的其它转换。 作为伺服环路的闭环响应和位置误差波形的函数导出参考波形。 位置误差波形对应于传感器相对于先前记录的转换的一个或多个位置误差。 参考波形可用于将后续轨道写入存储介质上。 使用参考波形写入后续轨道可以显着抑制伺服回路的机械扰动。
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5.发明授权Method and apparatus for determining separation between read and write elements of a transducer 失效用于确定换能器的读取和写入元件之间的分离的方法和装置
公开(公告)号：US5991115A
公开(公告)日：1999-11-23
申请号：US211138
申请日：1998-12-14
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
CPC分类号： G11B19/04 , G11B21/106 , G11B5/5565 , G11B5/59633
摘要： Improvements in placement of timing patterns in self servo writing include correcting for random and systematic errors due to geometric effects. In a disk drive having a recording head with separate read and write elements, a method for determining separation between the elements and for correcting for such errors as a function of skew angle between the head and the disk. Errors resulting from misalignment and non-parallelism of the elements as well as misalignment of the head on it its actuator are also detected and corrected. Errors due to changes in rotational velocity of the disk and misplacement of timing patterns with respect to adjacent timing patterns are detected and corrected. In general, a single revolution process may be used to both write and detect random errors on each track and corrected on subsequent tracks.
摘要翻译： 自动写入中定时模式布置的改进包括纠正由于几何效应引起的随机和系统误差。 在具有具有分离的读取和写入元件的记录头的磁盘驱动器中，确定元件之间的间隔并用于校正这种错误的方法，其作为头部和盘之间的歪斜角的函数。 元件的不对准和不平行度导致的误差以及头部在其致动器上的未对准性也被检测和校正。 检测并纠正由于盘的旋转速度的变化引起的错误和定时图案相对于相邻的定时图案的错位。 通常，可以使用单次旋转处理来写入和检测每个轨道上的随机误差并在随后的轨道上进行校正。
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6.发明授权Creating an initial set of tracks in a self-servowriting system using a compliant crashstop to control head movement 有权在自伺服系统中使用兼容的停顿来创建一组初始轨迹，以控制磁头移动公开(公告)号：US06603627B1
公开(公告)日：2003-08-05
申请号：US09584302
申请日：2000-05-31
IPC分类号： G11B2102
CPC分类号： G11B5/59633
摘要： A technique for self-servowriting a servopattern on a data storage medium is disclosed. An initial set of servopattern tracks is written by moving an actuator against a compliant structure (e.g., crashstop) with a first force applied thereto to hold the actuator in a first position to write a first track of the servopattern. The force is changed, thereby reaching a second position of the actuator against the compliant structure, at which a second track of the servopattern is written. The process is iterated for additional tracks. The distances (i.e., overlap) between pairs of written tracks are measured using a read element of the actuator, and this measured distance is compared to predetermined, desired distance. If the measured distance is within a specified tolerance, the process is complete; and if not, the tracks are erased and the process is repeated with changed forces applied to the actuator against the crashstop resulting in modified distances between tracks. The present invention overcomes the problem of self-servowriting an initial set of tracks of a servopattern, especially when the read element is separated from the write element in a direction along which the servowriting steps.
摘要翻译： 公开了一种在数据存储介质上自伺服编程伺服模式的技术。 通过使施加到其上的第一力将致动器抵靠顺应结构（例如，止动停止）移动来写入初始的伺服模式轨道集合，以将致动器保持在第一位置以写入伺服模式的第一轨迹。 该力被改变，从而达到致动器的第二位置抵靠柔性结构，伺服模式的第二轨迹被写入该柔性结构。 该过程被迭代用于附加轨道。 使用致动器的读取元件测量成对的写入轨迹之间的距离（即，重叠），并将该测量的距离与预定的期望距离进行比较。 如果测量距离在规定的公差内，则该过程完成; 如果不是，轨道被擦除，并且重复该过程，其中施加到致动器的改变的力抵抗着落停止，导致轨道之间的修改的距离。 本发明克服了对伺服模式的初始轨迹集进行自伺服的问题，特别是当读取元件沿着伺服驱动步骤的方向与写入元件分离时。
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公开(公告)号：US06301071B2
公开(公告)日：2001-10-09
申请号：US09811839
申请日：2001-03-19
IPC分类号： G11B2110
CPC分类号： G11B21/10 , G11B5/4886 , G11B5/5534 , G11B5/59627 , G11B5/59633 , G11B5/59644 , G11B5/59655 , G11B5/59688 , G11B21/081 , G11B21/083 , G11B21/085 , G11B21/106 , G11B27/3027
摘要： Methods and systems for self-servowriting a data storage medium are disclosed, including servoing to propagation bursts of a propagation pattern located in tracks other than an immediately preceding track. Reference levels used to position a recording head are accordingly kept in a usable dynamic range necessary to keep servo track spacing constant across the medium. The methods and systems are disclosed in connection with a rotary actuator having spaced read and write heads. Similar methods are disclosed for writing trigger or timing bursts of the propagation pattern.
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8.发明授权Methods, apparatus and program products for determining off-track time shaft estimates to be used in writing timing patterns on a storage medium 失效用于确定用于在存储介质上书写定时模式的离轨时间轴估计的方法，装置和程序产品公开(公告)号：US06411453B1
公开(公告)日：2002-06-25
申请号：US09145930
申请日：1998-09-03
IPC分类号： G11B509
CPC分类号： G11B5/5526
摘要： Off-track time shift estimates are determined and used in order to write subsequent trigger patterns on a storage medium at different track pitches. Various procedures for determining an off-track time shift estimate are provided. These procedures include measuring time intervals between a related set of trigger patterns and another trigger written on the storage medium; measuring time intervals between a motor index and a particular trigger pattern at two different radial locations; measuring the difference in the center location of two trigger patterns written at different radial locations; and microjogging a recording transducer during the interval between two different trigger patterns.
摘要翻译： 确定和使用偏离时间偏移估计，以便在不同轨道间距的存储介质上写入后续触发模式。 提供了用于确定偏离时间偏移估计的各种程序。 这些程序包括测量相关的一组触发模式与写在存储介质上的另一个触发之间的时间间隔; 在两个不同的径向位置测量马达索引和特定触发模式之间的时间间隔; 测量写在不同径向位置的两个触发模式的中心位置的差异; 并在两个不同的触发模式之间的间隔期间对记录换能器进行微距离移动。
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9.发明授权Method and apparatus for correcting for systematic errors in timing pattern generation 有权用于校正定时模式生成中的系统误差的方法和装置公开(公告)号：US06307697B1
公开(公告)日：2001-10-23
申请号：US09550643
申请日：2000-04-14
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
IPC分类号： G11B509
CPC分类号： G11B21/106 , G11B5/5565 , G11B5/59633 , G11B19/04
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for systematic errors due to geometric effects. A correction is made for varying systematic errors, such as when the recording head has spatially separate read and write elements. Further, servopattern rotation due to residual or unmeasured systematic errors is reduced by using a once per revolution clock index derived from the motor drive current waveform or any other sensor. In one aspect of correcting for systematic errors in the writing of timing patterns on a storage medium of a storage device, a time interval between a trigger pattern written at a first-radial position of the storage medium and a rotational index is measured. The rotational index is related to the rotational orientation of the storage medium with respect to a fixed frame of the storage device. The location of another trigger pattern to be written is shifted, using the measured time interval to determine the shift in location for the another trigger pattern.
摘要翻译： 自我维护中定时模式布局的改进包括纠正由于几何效应引起的系统误差。 对变化的系统误差进行校正，例如当记录头具有空间上分离的读和写元件时。 此外，通过使用从电动机驱动电流波形或任何其他传感器导出的每转一次的时钟指数来减少由于残余或未测量的系统误差引起的伺服模式旋转。 在对存储装置的存储介质上的定时模式的写入进行校正系统误差的一个方面，测量记录在存储介质的第一径向位置的触发模式与旋转指数之间的时间间隔。 旋转指数与存储介质相对于存储装置的固定框架的旋转取向有关。 使用测量的时间间隔来移动要写入的另一个触发模式的位置，以确定另一个触发模式的位置偏移。
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公开(公告)号：US06259574B1
公开(公告)日：2001-07-10
申请号：US09564830
申请日：2000-05-04
IPC分类号： G11B509
CPC分类号： G11B5/5565 , G11B5/59633 , G11B19/04 , G11B21/106
摘要： Improvements in placement of timing patterns in self-servowriting include detecting and correcting for media defects. A detector is used to detect whether a trigger pattern is within an expected location on the storage medium. If the trigger pattern is not detected, then a physical defect may be present. Thus, in one example, a false trigger pattern is generated. Additionally, a determination is made as to whether a trigger pattern is within an expected trigger pattern region. When the trigger pattern is not within the expected range, then a valid interval window may be modified to adjust the expected trigger pattern region.
摘要翻译： 自我维护中时序模式布局的改进包括检测和纠正媒体缺陷。 检测器用于检测触发模式是否在存储介质上的预期位置内。 如果未检测到触发模式，则可能存在物理缺陷。 因此，在一个示例中，生成错误触发模式。 此外，确定触发模式是否在期望的触发模式区域内。 当触发模式不在期望范围内时，可以修改有效间隔窗口以调整预期的触发模式区域。
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