Demodulation compensation for spiral servo tracks in hard...

Details Demodulation compensation for spiral servo tracks in hard... Demodulation compensation for spiral servo tracks in hard...

2007-12-11

2008-12-09

Tzeng, Fred (Department: 2627)

Dynamic magnetic information storage or retrieval

Modulating or demodulating

Reexamination Certificate

active

07463437

ABSTRACT:
A servo compensation processor comprises a peak locator that estimates a location of a peak amplitude of a waveform with respect to a plurality of samples of the waveform. The waveform is generated as a read head moves across servo tracks. A compensator determines a compensation amount based on a compensation curve and a sampling phase. An estimator determines an adjusted location of the peak amplitude based on the location and the compensation amount.

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