Disk drive servo control using spirals

Details Disk drive servo control using spirals Disk drive servo control using spirals

2006-01-23

2008-08-12

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S051000, C360S077070

Reexamination Certificate

active

07411758

ABSTRACT:
A servo control system includes a peak detection module that detects peak times of spiral signals generated by reading spirals prewritten on a magnetic medium. The servo control system includes a control module that determines positions of the spirals based on the peak times, stores the positions of the spirals, seeks and tracks the spirals using the positions, and writes servo on the magnetic medium based on the positions of the spirals.

REFERENCES:
patent: 6967799 (2005-11-01), Lee
patent: 6985316 (2006-01-01), Liikanen et al.
patent: 6989954 (2006-01-01), Lee et al.
patent: 7068459 (2006-06-01), Cloke et al.

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