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公开(公告)号:US08634283B1
公开(公告)日:2014-01-21
申请号:US13205034
申请日:2011-08-08
CPC分类号: G11B5/59661 , G11B5/59666
摘要: A disk drive is disclosed comprising a head actuated over a disk, wherein a bootstrap spiral track is written on the disk. While servoing on the bootstrap spiral track at least one circular reference track is written on the disk. A velocity profile is adjusted in response to the circular reference track, and a plurality of spiral tracks are written to the disk in response to the velocity profile.
摘要翻译: 公开了一种磁盘驱动器,其包括在磁盘上启动的磁头,其中自举螺旋磁道被写在磁盘上。 当在自举螺旋轨道上进行伺服时,至少一个圆形参考轨迹被写入磁盘。 响应于圆形参考轨迹调整速度分布,并且响应于速度分布将多个螺旋轨道写入盘。
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2.
公开(公告)号:US08634154B1
公开(公告)日:2014-01-21
申请号:US13204918
申请日:2011-08-08
IPC分类号: G11B5/09
CPC分类号: G11B5/59661 , G11B5/59666
摘要: A disk drive is disclosed comprising a head actuated over a disk, and a spindle motor operable to rotate the disk. A bootstrap spiral track is written to the disk, wherein the bootstrap spiral track comprises a high frequency signal interrupted by sync marks. A first sync mark is written while writing a first part of the bootstrap spiral track, and a second sync mark is written while writing a second part of the bootstrap spiral track. A switch between writing the first sync mark and the second sync mark is made in response to a spindle BEMF voltage, thereby generating a sync mark seam in the bootstrap spiral track.
摘要翻译: 公开了一种磁盘驱动器,其包括在盘上致动的磁头,以及可操作以旋转磁盘的主轴电机。 引导螺旋轨迹被写入盘,其中自举螺旋轨道包括由同步标记中断的高频信号。 在写入自举螺旋轨道的第一部分时写入第一同步标记,并且在写入自举螺旋轨道的第二部分时写入第二同步标记。 响应于主轴BEMF电压进行写入第一同步标记和第二同步标记之间的切换,从而在自举螺旋轨道中产生同步标记接缝。
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公开(公告)号:US08786976B1
公开(公告)日:2014-07-22
申请号:US13237727
申请日:2011-09-20
IPC分类号: G11B21/02
CPC分类号: G11B21/12
摘要: A disk drive is disclosed comprising a head actuated over a disk surface, the head comprising a fly height actuator for controlling a fly height of the head, and a ramp for parking the head. A ramp procedure is executed by applying a control signal to the fly height actuator to decrease the fly height and receiving a corresponding fly height signal, and detecting whether the head is on the ramp in response to the fly height signal.
摘要翻译: 公开了一种磁盘驱动器,其包括在磁盘表面上致动的磁头,该磁头包括用于控制磁头高度的飞行高度致动器和用于停放磁头的斜坡。 通过向飞行高度致动器施加控制信号以降低飞行高度并接收对应的飞行高度信号,并且响应于飞行高度信号检测磁头是否在斜坡上,执行斜坡程序。
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