Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
2006-01-17
2006-01-17
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
C360S060000, C360S075000, C360S053000, C360S046000, C360S077080, C360S067000, C360S068000, C324S210000, C324S212000, C324S226000
Reexamination Certificate
active
06987628
ABSTRACT:
A method and apparatus for detecting a high flying condition of a transducer head in a computer disk drive is provided. The method and apparatus allow the detection of high fly write events that occur over one or a small number of data sectors. In addition, the present invention provides a method and apparatus for detecting high fly write events with a great deal of sensitivity. The method and apparatus of the present invention provide quick response and high sensitivity by monitoring the strength of a signal derived from data written to the disk, and signaling a high fly write event if the monitored signal strength in connection with a particular piece of data is less than a stored high fly write number corresponding to that piece of data by a predetermined amount.
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Liikanen, et al., U.S. Appl. No. 09/649,660, filed Aug. 29, 2000, entitled “High Fly Write Detection Method”.
Lewkowicz Julian
Liikanen Bruce
Moline Jerry A.
Hansra Tejpal S.
Maxtor Corporation
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