Apparatus and method to minimize amplitude variations...

Details Apparatus and method to minimize amplitude variations... Apparatus and method to minimize amplitude variations...

2007-03-21

2009-08-25

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

C360S075000

Reexamination Certificate

active

07580213

ABSTRACT:
A servo writer that writes servo information onto a disk of a hard disk drive. The writing of the servo can be synchronized by a clock track that contains a clock read back signal. The clock read back signal is differentiated by a differentiator circuit. A clamping circuit clamps the clock read back signal to minimize signal ringing, undershoot and overshoot phenomena in the signal.

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patent: 6118614 (2000-09-01), Lee
patent: 2002/0196571 (2002-12-01), Hilla et al.

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