Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1998-04-01
1999-12-21
Sniezek, Andrew L.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7708, G11B 502
Patent
active
060057386
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.
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Chainer Timothy Joseph
Schultz Mark Delorman
Webb Bucknell Chapman
Yarmchuk Edward John
Habermehl James L.
International Business Machines Corp.
Sniezek Andrew L.
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