LTM compensation methods and systems for magnetic servo writing

Details LTM compensation methods and systems for magnetic servo writing LTM compensation methods and systems for magnetic servo writing

2008-09-23

2008-09-23

Sniezek, Andrew (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

11288684

ABSTRACT:
Methods and systems are provided for writing a magnetic servo track. In one example, a system includes a head assembly having first and second write elements, and a controller. The controller operable to receive a position signal associated with a position of the magnetic storage medium and energize the first write element to write a first magnetic servo pattern (e.g., repeating servo frames including a tone field). The controller is further operable to energize the second write element to write a second magnetic servo pattern (e.g., a mid-frame mark) at least partially overlapping the first pattern, wherein the relative position of the second pattern is adjusted in response to the position signal. The second pattern may be displaced relative to the first pattern in response to a lateral displacement of the magnetic storage medium to maintain a desired center line condition of the servo track.

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