Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
2002-02-15
2009-02-03
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
C360S025000, C360S053000, C360S075000
Reexamination Certificate
active
07486457
ABSTRACT:
A method and apparatus for predicting write failure resulting from flying height modulation and initiating re-writing of data upon occurrence of the predicted write failure is disclosed. According to the present invention, if the slider or transducer flying height modulates during the write process, such modulation is detected, and a rewrite of the same data is forced. A write reassign may be initiated when a thermal signal exceeding the predetermined threshold is detected during the rewrite and/or a read/verify may be initiated after the rewrite.
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Jen David H.
Suk Mike
Chambliss Bahner & Stophel P.C.
Davidson Dan I
Hitachi Global Storage Technologies - Netherlands B.V.
Hudspeth David
Lynch David W.
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