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1.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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2.发明授权Techniques for multitrack positioning and controlling error growth in self-servowriting systems 失效用于多轨定位和控制自伺服系统误差增长的技术公开(公告)号：US06600621B1
公开(公告)日：2003-07-29
申请号：US09583832
申请日：2000-05-31
申请人： Edward John Yarmchuk
发明人： Edward John Yarmchuk
IPC分类号： G11B2102
CPC分类号： G11B5/59655 , G11B5/59627
摘要： A technique, including a method and associated system, for multitrack positioning during self-servowriting on a storage medium, and for controlling error growth as the servowriting steps across the storage medium. Readback amplitudes of multiple bursts from previously written tracks are combined using a parabolic interpolation relationship, for positioning when writing bursts on a subsequent track. This technique is especially useful for systems in which the read element is separated from the write element in the direction in which the servowriting steps across the medium. Also disclosed is an associated technique for controlling error growth, in which a reference waveform is derived and stored for use when writing subsequent tracks. The individual reference adjustments resultant from the multitrack positioning signal are combined in a weighted sum which controls error growth when the weights are calculated properly, as disclosed herein.
摘要翻译： 一种包括方法和相关系统的技术，用于在存储介质上的自伺服驱动期间进行多轨定位，并且用于控制作为跨存储介质的伺服驱动步骤的错误增长。 使用抛物线插值关系组合来自先前写入的轨道的多个突发的回读幅度，用于在后续轨道上写入脉冲串时进行定位。 该技术对于其中读取元件沿着跨过介质的伺服驱动步骤的方向与写入元件分离的系统特别有用。 还公开了一种用于控制误差增长的相关技术，其中导出并存储参考波形以便在写入随后的轨道时使用。 由多轨定位信号产生的单独的参考调整以加权和组合，该加权和控制当权重被适当地计算时的误差增长，如本文所公开的。
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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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4.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：US20110279683A1
公开(公告)日：2011-11-17
申请号：US13103427
申请日：2011-05-09
IPC分类号： H04N5/225
CPC分类号： H04N5/232 , A01K29/005
摘要： An automatic motion triggered camera with improved triggering to produce images with the target animal substantially centered in the field of view. A single motion detector, a camera, and image memory are controlled by a processor that detects changes in the motion detector output and generates a trigger signal for the camera. The trigger follows a first stage of waiting until a predetermined minimum threshold of movement is detected and a second stage of waiting until a further change in the output signal indicative of an animal being substantially centered in the field of view of the camera is detected. Compensation for camera capture delay time can be included by sampling a plurality of motion detector signals, computing an estimated time at which the animal will be centered, and triggering the camera prior to that time.
摘要翻译： 自动运动触发相机，具有改进的触发以产生图像，其中目标动物基本上在视场中心。 单个运动检测器，照相机和图像存储器由检测运动检测器输出的变化的处理器控制，并产生相机的触发信号。 触发器跟随第一阶段等待，直到检测到预定的最小移动阈值，并且检测到第二阶段等待直到指示动物在相机的视野中基本居中的输出信号的进一步改变。 可以通过对多个运动检测器信号进行采样来计算相机拍摄延迟时间的补偿，计算动物将在其中心的估计时间，并且在该时间之前触发相机。
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6.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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7.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：US5875064A
公开(公告)日：1999-02-23
申请号：US677144
申请日：1996-07-09
CPC分类号： G11B21/08 , G11B21/10 , G11B5/5534 , G11B5/58 , G11B5/584 , G11B5/59633
摘要： An accurate and time-efficient method and system for self-servowriting wherein at least one reference value used to position the transducer is updated for some, but not all, of the tracks to be written. The reference value(s) is dependent upon a predefined indicium of transducer position, such as the amplitude of the readback signal obtained from a written track when the transducer is positioned on the track. In a first embodiment, updating of the reference value(s) is performed at every Nth track written, where N is a fixed number or range of numbers determined by an expected track-to-track variation of the indicium. The servowriting system may be designed to dynamically increase or decrease N during servowriting in response to actual variations in the indicium. According to a second embodiment, updating is only performed when needed, e.g. when the variation of the measured indicium between two written tracks (not necessarily adjacent tracks) exceeds a predefined threshold value. For systems employing dual-element heads, servowriting accuracy is enhanced by performing a read head adjustment prior to updating of the reference values.
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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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10.发明授权Methods, apparatus and program products for determining off-track time shift estimates to be used in writing timing patterns on a storage medium 失效用于确定在存储介质上写入定时模式的偏离轨道时移估计的方法，装置和程序产品公开(公告)号：US06687069B2
公开(公告)日：2004-02-03
申请号：US09992394
申请日：2001-11-06
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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