Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
2011-04-19
2011-04-19
Mercedes, Dismery E (Department: 2627)
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
C360S053000, C360S059000, C360S060000, C360S062000, C360S123020
Reexamination Certificate
active
07929235
ABSTRACT:
Disclosed are a method and system for distinguishing spatial and thermal defects on perpendicular media. The magnetic domains of the perpendicular media are oriented to have a first polarity, scanned using a read head, oriented to have a second polarity and scanned again. The signals from the read head are combined to produce output signals having improved signal to noise ratios from which the locations of spatial and thermal defects can be identified and distinguished.
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Ferry David H.
Jalalian Hassan
Meier Stephen Frank
Kilpatrick Townsend & Stockton LLP
Mercedes Dismery E
MRA TEK, LLC
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