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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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2.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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3.发明授权Method and apparatus for correcting for random errors in timing pattern generation 有权用于校正定时模式生成中的随机误差的方法和装置公开(公告)号：US06324027B1
公开(公告)日：2001-11-27
申请号：US09316884
申请日：1999-05-21
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 correcting for random errors. Random errors may be caused by variations in disk velocity and therefore, one technique for correcting for random errors includes reducing velocity jitter. Additionally, random errors can be corrected by improving interval control during the propagation of trigger patterns used in writing timing information on storage media. Further, random errors, in the writing of timing information, can be corrected during a single revolution of the storage media. This eliminates additional rotations, thereby providing a large capital cost savings.
摘要翻译： 自我维护中定时模式布局的改进包括纠正随机错误。 随机误差可能由磁盘速度的变化引起，因此用于校正随机误差的一种技术包括降低速度抖动。 此外，可以通过在用于在定时信息写入存储介质上的触发模式的传播期间改进间隔控制来校正随机误差。 此外，在定时信息的写入中的随机误差可以在存储介质的单次旋转期间被校正。 这消除了额外的旋转，从而提供了大量的资本成本节省。
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4.发明授权Method and apparatus for correcting systematic errors in timing pattern generation 失效用于校正定时图案生成中的系统误差的方法和装置公开(公告)号：US06252732B1
公开(公告)日：2001-06-26
申请号：US08882396
申请日：1997-07-10
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错误的一个方面，测量在存储介质的第一径向位置上写入的触发模式与旋转指标之间的时间间隔。 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：US6101055A
公开(公告)日：2000-08-08
申请号：US891282
申请日：1997-07-10
CPC分类号： G11B5/5565 , G11B19/04 , G11B21/106 , G11B5/59633
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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公开(公告)号：US6078450A
公开(公告)日：2000-06-20
申请号：US891122
申请日：1997-07-10
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
CPC分类号： G11B5/5565 , G11B19/04 , G11B21/106 , G11B5/59633
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for random errors. Random errors may be caused by variations in disk velocity and therefore, one technique for correcting for random errors includes reducing velocity jitter. Additionally, random errors can be corrected by improving interval control during the propagation of trigger patterns used in writing timing information on storage media. Further, random errors, in the writing of timing information, can be corrected during a single revolution of the storage media. This eliminates additional rotations, thereby providing a large capital cost savings.
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公开(公告)号：US6031680A
公开(公告)日：2000-02-29
申请号：US45479
申请日：1998-03-20
CPC分类号： G11B21/10 , G11B21/081 , G11B21/083 , G11B21/085 , G11B21/106 , G11B27/3027 , G11B5/5534 , G11B5/59633 , G11B5/59644 , G11B5/59655 , G11B5/59688 , G11B5/4886 , G11B5/59627
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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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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9.发明授权Methods and systems for self-servowriting including maintaining a reference level within a usable dynamic range 有权用于自伺服驱动的方法和系统，包括将参考电平维持在可用的动态范围内
公开(公告)号：US6101063A
公开(公告)日：2000-08-08
申请号：US447100
申请日：1999-11-22
CPC分类号： G11B21/10 , G11B21/081 , G11B21/083 , G11B21/085 , G11B21/106 , G11B27/3027 , G11B5/5534 , G11B5/59633 , G11B5/59644 , G11B5/59655 , G11B5/59688 , G11B5/4886 , G11B5/59627
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.
摘要翻译： 公开了一种用于自伺服驱动数据存储介质的方法和系统，包括伺服到位于紧邻在前的轨道之外的轨道中的传播模式的传播脉冲串。 因此，用于定位记录头的参考电平保持在维持伺服磁道间隔在介质上不变的必要动态范围。 结合具有间隔读写头的旋转致动器公开了这些方法和系统。 公开了用于写入传播模式的触发或定时脉冲串的类似方法。
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10.发明授权Method and apparatus for correcting for random errors in timing pattern generation 失效用于校正定时模式生成中的随机误差的方法和装置
公开(公告)号：US6075668A
公开(公告)日：2000-06-13
申请号：US316882
申请日：1999-05-21
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
CPC分类号： G11B5/5565 , G11B19/04 , G11B21/106 , G11B5/59633
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for random errors. Random errors may be caused by variations in disk velocity and therefore, one technique for correcting for random errors includes reducing velocity jitter. Additionally, random errors can be corrected by improving interval control during the propagation of trigger patterns used in writing timing information on storage media. Further, random errors, in the writing of timing information, can be corrected during a single revolution of the storage media. This eliminates additional rotations, thereby providing a large capital cost savings.
摘要翻译： 自我维护中定时模式布局的改进包括纠正随机错误。 随机误差可能由磁盘速度的变化引起，因此用于校正随机误差的一种技术包括降低速度抖动。 此外，可以通过在用于在定时信息写入存储介质上的触发模式的传播期间改进间隔控制来校正随机误差。 此外，在定时信息的写入中的随机误差可以在存储介质的单次旋转期间被校正。 这消除了额外的旋转，从而提供了大量的资本成本节省。
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