Processing techniques for time-based servo patterns

Details Processing techniques for time-based servo patterns Processing techniques for time-based servo patterns

2007-03-27

2007-03-27

Korzuch, William (Department: 2627)

Dynamic magnetic information storage or retrieval

Modulating or demodulating

C360S031000, C360S051000, C360S078010, C360S048000

Reexamination Certificate

active

10888857

ABSTRACT:
Techniques are described for accurately processing playback signals of time-based servo patterns recorded on a data storage medium. In particular, techniques are described for determining values for signal peaks within a playback signal of a time-based servo pattern by applying interpolation to data points in proximity to each of the signal peaks. At least three data points are identified in proximity to a desired peak to be detected within the playback signal. A value is calculated for the desired peak based on interpolation of the at least three data points. A playback signal of a time-based servo pattern may include a sequence of signal peaks. A time-based servo pattern may be detected based on lengths of time measured between consecutive peaks in the sequence of peaks. A position error signal (PES) may be generated based on the values calculated for each of the sequence of peaks.

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