Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2005-09-20
2005-09-20
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
06947245
ABSTRACT:
Methods in accordance with the present invention can be applied to reduce frictional effects in a bearing of a rotary actuator on the motion dynamics of the rotary actuator. In one such method a disk having a first magnetic servo pattern on a surface written, for example, by a media writer, is rotated at a first frequency. The first magnetic servo pattern is read using a head. A second magnetic servo pattern based on the first magnetic servo pattern can be written to the surface by the head such that the second magnetic servo pattern is defined by the oscillation of the head at a second frequency. 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.
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Fliesler & Meyer LLP
Hudspeth David
Matsushita Electric - Industrial Co., Ltd.
Tzeng Fred F.
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