Servo data writing device

Details Servo data writing device Servo data writing device

2005-06-21

2005-06-21

Sniezek, Andrew L. (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

C360S075000

Reexamination Certificate

active

06909568

ABSTRACT:
A servo writing device which writes servo data in each sector of each track of a magnetic disk, wherein servo data recorded positions of the tracks are mutually corresponded. The servo writing device includes a clock head for generating reference clock signals and a standard clock generating circuit generating standard clock signals, whose frequency is higher than that of the reference clock signals and which is not synchronized with the reference clock signals. The device further includes a start pulse generating circuit receiving the reference clock signals as clock signals and generating a start pulse corresponding to the servo data recorded position and a synchronizing circuit synchronizing the start pulse with the standard clock signals and generating a synchronizing-start pulse. In addition, the device also includes a pattern generating circuit receiving the standard clock signals as clock signals and generating the servo data synchronizing with the synchronizing-start pulse.

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