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Estimating a writer/reader gap in a disk drive by measuring write/read times relative to a sync mark
Estimating a writer/reader gap in a disk drive by measuring write/read times relative to a sync mark
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机译:通过测量相对于同步标记的写入/读取时间来估计磁盘驱动器中的写入器/读取器间隙
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摘要
A method of estimating a writer/reader gap in a disk drive is disclosed. During a first revolution of the disk, a clock is synchronized to a first preamble and used to measure a write delay to write a second sync mark to the disk relative to a first sync mark. During a second revolution of the disk, the clock is again synchronized to the first preamble and used to measure a read delay required to detect the second sync mark relative to the first sync mark. The writer/reader gap is then estimated in response to the measured write delay and the measured read delay, for example, by computing a difference between the measured write delay and the measured read delay.
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