Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1997-01-14
2000-01-25
Sniezek, Andrew L.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 746, G11B 5584
Patent
active
060184345
ABSTRACT:
A magnetic storage tape includes a plurality of spaced-apart servo reference patterns formed along a longitudinal reference axis. The patterns result in a predetermined pattern of coherent magnetic signal disturbances to magnetic tracks written and read across the patterns. The tape drive decodes the disturbance pattern into a position error signal. A tape drive head position servo iteratively adjusts lateral position of a magnetic head relative to the tape, based on sequentially developed position error signals in order to bring the head rapidly into precise alignment with the longitudinal reference axis. A method for forming the reference patterns into the tape with laser beam ablation is also disclosed.
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Chun Debra A.
Harrison David B.
Klawzinski Robert V.
Quantum Corporation
Sniezek Andrew L.
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