Synchronous RRO write

Details Synchronous RRO write Synchronous RRO write

2008-07-11

2009-10-13

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

C360S077040, C360S077020, C360S075000

Reexamination Certificate

active

07602568

ABSTRACT:
A hard disk drive system includes a control module that generates a phase offset signal for a repeatable run out (RRO) field of a servo wedge based on an RRO phase of the RRO field and a data phase of data in at least one other servo wedge field of a previously written wedge. A read/write channel module adjusts a clock phase based on the phase offset signal.

REFERENCES:
patent: 6775091 (2004-08-01), Sutardja
patent: 7092462 (2006-08-01), Annampedu et al.
“CORDIC”—From Wikipedia, the free encyclopedia; May 30, 2006—pp. 1-3.
“Discrete Fourier Transform”—From Wikipedia, the free encyclopedia; May 30, 2006—p. 1-12.

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