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1. 发明授权

US07095580B2 Methods to determine gross and fine positioning on a reference surface of a media 有权
标题翻译：确定介质参考表面上的粗略和精确定位的方法
公开(公告)号：US07095580B2
公开(公告)日：2006-08-22
申请号：US10733131
申请日：2003-12-10
申请人： Richard M. Ehrlich , Gary W. Calfee , Anton Gerasimov , James V. Wiseman
发明人： Richard M. Ehrlich , Gary W. Calfee , Anton Gerasimov , James V. Wiseman
IPC分类号： G11B5/596
CPC分类号： G11B5/5552 , G11B5/012 , G11B5/865 , G11B2005/001 , G11B2005/0021
摘要： Methods in accordance with the present invention can include determining a position of a head along a stroke by locating one or more marker-zones printed to a reference surface of a disk. The one or more marker-zones can be printed to a portion of the reference surface as one or more pulses from a template pattern that can further comprise a plurality of chevrons. In one embodiment, each pulse can trace the motion of the stroke along at least a portion of the radius of the reference surface. A pulse can identify a marker-zone edge when the pulse disappears at some radius from the center of the disk. By moving the head along the stroke, the marker-zone edge can be detected and a gross position determined. A fractional position can be determined by measuring a phase of a chevron located at substantially the same radial location as the edge.
摘要翻译：根据本发明的方法可以包括通过定位打印到盘的参考表面的一个或多个标记区来确定头沿着笔划的位置。可以将一个或多个标记区域打印到参考表面的一部分，作为可以进一步包括多个人字纹的模板图案的一个或多个脉冲。在一个实施例中，每个脉冲可以沿着参考表面的半径的至少一部分跟踪行程的运动。当脉冲从磁盘中心的某个半径消失时，脉冲可以识别标记区域边缘。通过沿着行程移动头部，可以检测到标记区域边缘并确定总位置。可以通过测量位于与边缘基本相同的径向位置处的人字形的相位来确定小数位置。

2. 发明授权

US07092182B2 Marker-zone to determine gross positioning on a reference surface of a media 有权
标题翻译：标记区域，用于确定介质参考表面上的总体定位
公开(公告)号：US07092182B2
公开(公告)日：2006-08-15
申请号：US10733013
申请日：2003-12-10
申请人： Richard M. Ehrlich , Gary W. Calfee , Anton Gerasimov , James V. Wiseman
发明人： Richard M. Ehrlich , Gary W. Calfee , Anton Gerasimov , James V. Wiseman
IPC分类号： G11B5/09
CPC分类号： G11B5/59633 , G11B5/865 , G11B2005/0021
摘要： Template patterns in accordance with the present invention can include one or more marker-zones printed to a reference surface of a disk for determining gross-position along a stroke of a read head connected with a rotary actuator. The one or more marker-zones can be printed or otherwise written to a portion of the reference surfaces as one or more pulses. In one embodiment, each pulse can trace the motion of the stroke along at least a portion of the radius of the reference surface. A pulse can identify a marker-zone edge when a di-bit (a transition pair representing a pulse) disappears at some radius from center of the disk. At a radius closer to the center of the disk, the di-bit can abruptly reappear so that the pulse is continued. The interruption in the radial continuity of the magnetized pulse defines the marker-zone and can be any length.
摘要翻译：根据本发明的模板图案可以包括打印到盘的参考表面的一个或多个标记区，用于确定沿着与旋转致动器连接的读取头的行程的总位置。可以将一个或多个标记区域作为一个或多个脉冲打印或以其他方式写入参考表面的一部分。在一个实施例中，每个脉冲可以沿着参考表面的半径的至少一部分跟踪行程的运动。当二位（表示脉冲的转换对）从磁盘中心的某个半径消失时，脉冲可以识别标记区域边缘。在靠近盘中心的半径处，二位可以突然重新出现，使脉冲持续。磁化脉冲的径向连续性的中断限定了标记区域，并且可以是任何长度。

3. 发明申请

US20080239556A1 Linearizing position error signal using spiral servo information 审中-公开
标题翻译：使用螺旋伺服信息线性化位置误差信号
公开(公告)号：US20080239556A1
公开(公告)日：2008-10-02
申请号：US11731452
申请日：2007-03-30
申请人： James V. Wiseman , Gary W. Calfee
发明人： James V. Wiseman , Gary W. Calfee
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A method for determining a position error signal in a disk drive includes writing a servo signal that has a variable offset from a track center for a plurality of concentric tracks in a servo wedge on a disk surface, forming a spiral servo track, observing the offset values for the servo signal in the servo wedges at a first of the plurality of tracks, and observing the offset values for the servo signal in the servo wedges at a second of the plurality of tracks. The method also includes determining the first error amounts from the offset values at the first of the plurality of tracks, and determining the second error amounts from the offset values at the second of the plurality of tracks. If the first error amounts and the second error amounts are equal, using one of the first or second error amounts as a correction update to a head non-linearity look-up table.
摘要翻译：一种用于确定磁盘驱动器中的位置误差信号的方法包括将具有来自磁道中心的可变偏移的伺服信号写入到盘表面上的伺服楔形中，形成螺旋伺服磁道，观察偏移伺服伺服伺服信号的值在多个轨迹中的第一个轨迹处，并且在多个轨迹中的第二个轨迹处观察伺服楔形中的伺服信号的偏移值。该方法还包括从多个磁道中的第一个的偏移值确定第一误差量，以及根据多个磁迹中的第二磁道的偏移值确定第二误差量。如果第一误差量和第二误差量相等，则使用第一或第二误差量中的一个作为头部非线性查找表的校正更新。

4. 发明授权

US07274527B2 Method for optimizing dynamic stroke in the self servo-write process 失效
标题翻译：自我伺服写入过程中优化动态行程的方法
公开(公告)号：US07274527B2
公开(公告)日：2007-09-25
申请号：US10872062
申请日：2004-06-18
申请人： Gary W. Calfee , Richard M. Ehrlich
发明人： Gary W. Calfee , Richard M. Ehrlich
IPC分类号： G11B21/02 , G11B5/596 , G11B5/09
CPC分类号： G11B5/59633
摘要： Methods in accordance with embodiments of the present invention can be applied to determine a width of a data stroke along a rotatable medium of a data storage device. In one embodiment, the width can be determined by measuring a distance from a marker zone edge of a template pattern to a ramp, and measuring a distance from the marker zone edge to an inner crash stop. A track layout can be determined based on the width of the data stroke.
摘要翻译：可以应用根据本发明的实施例的方法来确定沿着数据存储设备的可旋转介质的数据笔画的宽度。在一个实施例中，可以通过测量从模板图案的标记区域边缘到斜坡的距离以及测量从标记区域边缘到内部碰撞停止点的距离来确定宽度。可以根据数据笔画的宽度来确定曲目布局。

5. 发明授权

US07215498B2 Dynamic stroke optimization in the self servo-write process 失效
标题翻译：自动伺服写入过程中的动态行程优化
公开(公告)号：US07215498B2
公开(公告)日：2007-05-08
申请号：US10871824
申请日：2004-06-18
申请人： Gary W. Calfee , Richard M. Ehrlich
发明人： Gary W. Calfee , Richard M. Ehrlich
IPC分类号： G11B21/02
CPC分类号： G11B5/59633
摘要： Systems and data storage devices in accordance with embodiments of the present invention can execute instructions to determine a width of a data stroke along a rotatable medium. In one embodiment, the width can be determined by measuring a distance from a marker zone edge of a template pattern on the rotatable medium to a ramp positioned adjacent to the rotatable medium or near the inner diameter of the rotatable medium, and measuring a distance from the marker zone edge to a crash stop. A track layout can be determined based on the width of the data stroke.
摘要翻译：根据本发明的实施例的系统和数据存储设备可以执行指令以确定沿着可旋转介质的数据笔画的宽度。在一个实施例中，可以通过测量从可旋转介质上的模板图案的标记区边缘到邻近可旋转介质定位的斜面或靠近可旋转介质的内径的距离来测量宽度，并且测量距离标记区边缘到崩溃停止。可以根据数据笔画的宽度来确定曲目布局。

6. 发明授权

US5982571A Disk drive with closed loop commutator and actuator oscillator 失效
标题翻译：带闭环换向器和执行器振荡器的磁盘驱动器
公开(公告)号：US5982571A
公开(公告)日：1999-11-09
申请号：US912965
申请日：1997-06-30
申请人： Gary W. Calfee , David B. Jeppson
发明人： Gary W. Calfee , David B. Jeppson
IPC分类号： G11B19/04 , G11B19/20 , G11B21/02
CPC分类号： G11B21/12 , G11B19/2054
摘要： A disk drive having: (a) at least one data disk; (b) a brushless DC motor coupled to the data disk, the motor having: (i) multiple phase windings arranged as a stator, and (ii) a rotor having a permanent magnet or a DC current excitation winding for rotating the data disk; (c) a transducer for writing data to or reading data from the data disk; (d) a carrier supporting the transducer; (e) a voice coil motor coupled to the carrier for moving the carrier radially across the disk; (f) a drive controller coupled to the brushless DC motor and to the voice coil motor; and (g) a support for supporting the brushless DC motor, the voice coil motor and the drive controller. The drive controller periodically samples the rotor position and then drives the motor by energizing appropriate phase windings in relation to the rotor position that provide maximum forward torque to the rotor. While driving the motor, the drive controller also applies a series of current pulses to the VCM to oscillate the head carrier radially in and out. The combined application of maximum torque to the rotor and oscillation of the head carrier overcomes stiction between the slider and the surface of the disk to rotate the disk.
摘要翻译：一种磁盘驱动器，具有：（a）至少一个数据盘; （b）耦合到所述数据盘的无电刷DC电动机，所述电动机具有：（i）作为定子布置的多个相绕组，和（ii）具有用于旋转所述数据盘的永磁体或直流电励磁绕组的转子; （c）用于将数据写入或从数据盘读取数据的换能器; （d）支撑换能器的载体; （e）耦合到所述载体的音圈电机，用于使所述载体径向移动穿过所述盘; （f）连接到无刷直流电动机和音圈电动机的驱动控制器; 和（g）用于支撑无刷直流电动机，音圈电动机和驱动控制器的支撑件。驱动器控制器周期性地对转子位置进行采样，然后通过相对于向转子提供最大正向转矩的转子位置激励合适的相绕组来驱动电动机。在驱动电机的同时，驱动控制器还向VCM施加一系列电流脉冲以使头部载体径向振荡。最大扭矩与转子的组合应用和头架的振动克服了滑块和盘表面之间的静摩擦以旋转盘。

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