Invention Grant
US08649117B2 Method of writing a preamble field on a disk drive to reduce track squeeze 有权
在磁盘驱动器上写入前导字段以减少轨道挤压的方法

Method of writing a preamble field on a disk drive to reduce track squeeze
Abstract:
Preamble fields are written on a storage disk in a hard disk drive in a way that reduces track squeeze. Preamble fields for a particular data storage track on the storage disk are written over multiple revolutions of the storage disk to eliminate low-frequency variations of the preamble stitch line from an ideal position of the preamble stitch line. By writing the preamble fields for one data storage track over multiple revolutions, and by writing the preamble fields in each revolution to non-consecutive servo wedges, low-frequency variations of the preamble stitch line from its ideal position can be converted to high-frequency variations of the preamble stitch line that do not produce low-frequency track squeeze.
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