公开(公告)号：US07589930B2

公开(公告)日：2009-09-15

申请号：US11724124

申请日：2007-03-14

申请人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

发明人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

IPC分类号： G11B5/596

CPC分类号： G11B5/59627

摘要： Compensation for repeated runout (RRO) error, such as in a data storage device servo circuit, is preferably carried out by obtaining a population distribution of RRO error values from at least selected ones of a subset of tracks. An RRO error compensation value is determined for each one of the subset of tracks when a variance characteristic of said population distribution meets a selected criterion. Preferably, a first track of a storage medium has a servo field at a first angular position on the medium, a repeated runout (RRO) error compensation field at a second angular position on the medium, and a user data field at a third angular position on the medium. An immediately adjacent second track preferably has a servo field at the first angular position and a user data field at the second angular position in lieu of an RRO error compensation field.

摘要翻译： 针对重复跳动（RRO）错误的补偿，例如在数据存储设备伺服电路中，优选地通过从轨道子集中的至少选定的RRO误差值获得RRO误差值的总体分布来执行。 当所述人口分布的方差特征满足所选择的标准时，对于轨道子集中的每一个确定RRO误差补偿值。 优选地，存储介质的第一轨道在介质上的第一角度位置处具有伺服磁场，在介质上的第二角位置处的重复跳动（RRO）误差补偿场，以及在第三角位置处的用户数据场 在媒体上 最近相邻的第二轨道优选地具有位于第一角位置处的伺服场，而在第二角位置具有用户数据场，而不是RRO误差补偿场。

公开(公告)号：US20080225654A1

公开(公告)日：2008-09-18

申请号：US11724124

申请日：2007-03-14

申请人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

发明人： Reed D. Hanson ,  Thomas C. Zirps ,  Peng Yan ,  Samir Mittal ,  Timothy F. Ellis

IPC分类号： G11B7/00

CPC分类号： G11B5/59627

摘要： Compensation for repeated runout (RRO) error, such as in a data storage device servo circuit, is preferably carried out by obtaining a population distribution of RRO error values from at least selected ones of a subset of tracks. An RRO error compensation value is determined for each one of the subset of tracks when a variance characteristic of said population distribution meets a selected criterion. Preferably, a first track of a storage medium has a servo field at a first angular position on the medium, a repeated runout (RRO) error compensation field at a second angular position on the medium, and a user data field at a third angular position on the medium. An immediately adjacent second track preferably has a servo field at the first angular position and a user data field at the second angular position in lieu of an RRO error compensation field.

摘要翻译： 针对重复跳动（RRO）错误的补偿，例如在数据存储设备伺服电路中，优选地通过从轨道子集中的至少选定的RRO误差值获得RRO误差值的总体分布来执行。 当所述人口分布的方差特征满足所选择的标准时，对于轨道子集中的每一个确定RRO误差补偿值。 优选地，存储介质的第一轨道在介质上的第一角度位置处具有伺服磁场，在介质上的第二角位置处的重复跳动（RRO）误差补偿场，以及在第三角位置处的用户数据场 在媒体上 最近相邻的第二轨道优选地具有位于第一角位置处的伺服场，而在第二角位置具有用户数据场，而不是RRO误差补偿场。

公开(公告)号：US07119981B2

公开(公告)日：2006-10-10

申请号：US10184702

申请日：2002-06-28

申请人： Reed D. Hanson ,  Nathaniel B. Wilson ,  John C. Morris ,  Timothy F. Ellis

发明人： Reed D. Hanson ,  Nathaniel B. Wilson ,  John C. Morris ,  Timothy F. Ellis

IPC分类号： G11B5/596 ,  G11B5/55

CPC分类号： G11B5/5534 ,  G11B5/59627

摘要： An apparatus and method for tracking radially-dependent repeatable run-out in a disc drive having a servo loop for positioning a head over a rotating disc is provided. The disc includes multiple tracks. Radially-dependent repeatable run-out control components for at least a subset of the multiple tracks are first determined. Data representative of the radially-dependent repeatable run-out control components for the subset of the multiple tracks is then stored. The stored data representative of the radially-dependent repeatable run-out control components is retrieved before settling on the target track, and subsequently used to follow the selected track.