Methods and systems for self-servowriting including maintaining

Details Methods and systems for self-servowriting including maintaining Methods and systems for self-servowriting including maintaining

1996-05-29

1998-05-26

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7708, G01B 502

Patent

active

057575746

ABSTRACT:
Methods and systems for self-servowriting a data storage medium are disclosed, including servoing to propagation bursts of a propagation pattern located in tracks other than an immediately preceding track. Reference levels used to position a recording head are accordingly kept in a usable dynamic range necessary to keep servo track spacing constant across the medium. The methods and systems are disclosed in connection with a rotary actuator having spaced read and write heads. Similar methods are disclosed for writing trigger or timing bursts of the propagation pattern.

REFERENCES:
patent: 4414589 (1983-11-01), Oliver
patent: 4912576 (1990-03-01), Janz
patent: 5375020 (1994-12-01), Aggarwal et al.
patent: 5416652 (1995-05-01), Lewis
patent: 5541784 (1996-07-01), Cribbs et al.
patent: 5570247 (1996-10-01), Brown et al.
patent: 5612833 (1997-03-01), Yarmchuk et al.
patent: 5615058 (1997-03-01), Chainer et al.

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