Electricity: measuring and testing – Magnetic – Magnetic information storage element testing
Reexamination Certificate
2007-07-24
2007-07-24
Lefkowitz, Edward (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetic information storage element testing
C324S212000, C360S025000
Reexamination Certificate
active
10928085
ABSTRACT:
A method for testing electromagnetic characteristics of magnetic media while maintaining consistent performance of a read/write head and recording channel is disclosed. The disclosed method is performed such that reduced statistical sampling is achieved. The method includes recording a first set of baseline measurements utilizing a first magnetic media with the read/write head and recording channel. The first magnetic media is then removed from an assembly containing the read/write head and recording channel and is replaced with a second magnetic media. Measurements are made utilizing the second magnetic media with the read/write head and recording channel, wherein the measurements are comparable with the baseline measurements and wherein consistent performance of the read/write head and the recording channel is maintained so as to reduce the size of statistical samples needed.
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Green Paul M.
Ivett Peter
Pang Wyman
Hitachi Global Storage Technologies - Netherlands B.V.
Lefkowitz Edward
Whittington Kenneth J.
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