Patent Number: 7,085,093

Title: Systems and methods for doubling sample rate using two-step self-servowriting

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.

Inventors: Oki; Kenji (Mihara-Mura, JP)

Assignee: Matsushita Electric Industrial Co., Ltd.

International Classification: G11B 21/02 (20060101)

Expiration Date: 8/01/02018