公开(公告)号：US08810956B2

公开(公告)日：2014-08-19

申请号：US13562290

申请日：2012-07-30

申请人： Randy Clark Inch ,  Kevin Bruce Judd

发明人： Randy Clark Inch ,  Kevin Bruce Judd

IPC分类号： G11B20/20

CPC分类号： G11B20/10388 ,  G11B5/584 ,  G11B2220/956

摘要： A method for accurately adjusting skew in the presence of tape motion includes performing a calibration run of magnetic tape in a tape drive. During the calibration run, the method records skew readings at selected intervals. The method then finds a range associated with the skew readings, such as by finding a high and low skew reading. The method then finds a center point of the range, and a difference between the center point and a desired center point. The method applies the difference to each recorded skew reading to generate a target skew reading for each recorded skew reading. The method generates a skew error signal that reflects the difference between each recorded skew reading and each corresponding target skew reading. The skew error signal will generally be consistent even as the tape moves, thereby allowing a technician to easily adjust and optimize the skew.

摘要翻译： 在存在磁带运动的情况下精确地调整偏斜的方法包括在磁带驱动器中执行磁带的校准运行。 在校准运行期间，该方法以选定的间隔记录偏斜读数。 该方法然后找到与偏斜读数相关联的范围，例如通过找到高和低偏斜读数。 然后，该方法找到范围的中心点，以及中心点与期望中心点之间的差。 该方法将差异应用于每个记录的偏斜读数，以产生每个记录的倾斜读数的目标歪斜读数。 该方法产生反映每个记录的偏斜读数与每个对应的目标歪斜读数之间的差异的偏斜误差信号。 即使磁带移动，偏斜误差信号通常也是一致的，从而允许技术人员容易地调整和优化偏斜。

公开(公告)号：US08059362B2

公开(公告)日：2011-11-15

申请号：US12716067

申请日：2010-03-02

申请人： Reed Alan Hancock ,  Randy Clark Inch ,  Kevin Bruce Judd ,  Kazuhiro Tsuruta

发明人： Reed Alan Hancock ,  Randy Clark Inch ,  Kevin Bruce Judd ,  Kazuhiro Tsuruta

IPC分类号： G11B5/584

CPC分类号： G11B5/584

摘要： Where a tape is subject to lateral shift excursions from one side of a head to another, a coarse actuator is positioned laterally to enable a fine actuator to follow lateral motion of a longitudinal tape having at least one longitudinal defined servo track. A position error signal loop is configured to sense servo sensor(s) and to determine position error between the head and a desired position related to the defined servo track(s). A servo control senses the lateral shift excursion of the defined servo track(s); determines a maximum positive peak and a maximum negative peak of the lateral shift excursion; and positions the coarse actuator substantially at a midpoint of the maximum positive peak and the maximum negative peak of lateral shift excursion of the defined servo track(s). Thus, the fine actuator follows the lateral shift excursion, while the coarse actuator remains at the midpoint.

摘要翻译： 在磁带从头的一侧经受横向移位偏移到另一侧的情况下，粗略的致动器被侧向定位，以使得精细致动器能够跟随具有至少一个纵向限定的伺服轨道的纵向带的横向运动。 位置误差信号回路被配置为感测伺服传感器并且确定头部与与所定义的伺服轨道相关的期望位置之间的位置误差。 伺服控制器检测定义的伺服轨道的横向偏移偏移; 确定横向偏移偏移的最大正峰值和最大负峰值; 并且将粗调制器基本上定位在限定的伺服轨道的最大正峰值和横向偏移偏移的最大负峰值的中点。 因此，精细致动器遵循横向偏移偏移，而粗调制器保持在中点。