Systems and methods for two-step self-servowriting without...

Details Systems and methods for two-step self-servowriting without... Systems and methods for two-step self-servowriting without...

2006-11-07

2006-11-07

Wong, Kin C. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

07133240

ABSTRACT:
A two-step self-servowriting process first writes an intermediate pattern based on a reference pattern, and then writes a final pattern based on the intermediate pattern, wherein the reference pattern can be a printed media or a spiral pattern. Such an approach can be utilized to reduce the noise/runout, eliminate timing eccentricity, and increase the sample rate of the final pattern. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

REFERENCES:
patent: 6091564 (2000-07-01), Codilian et al.
patent: 6304407 (2001-10-01), Baker et al.
patent: 6519107 (2003-02-01), Ehrlich et al.

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