Cryptography – Cryptanalysis
Patent
1993-10-29
1995-04-18
Cain, David C.
Cryptography
Cryptanalysis
380 23, 380 25, 360 71, H04L 900
Patent
active
054085055
ABSTRACT:
A method and apparatus is disclosed for using the remanent noise of a magnetic medium as a fingerprint for benchmark testing of the magnetic medium as it is both manufactured and used. A cross-correlation is made between the fingerprint at various times as the magnetic medium is manipulated and is indicative of the integrity thereof. This cross-correlation media may be used to control manufacturing and recording processes, including tape tensioning and channel equalization. This cross-correlation between fingerprints can be used to control the tension applied to a thin film magnetic medium during record and/or playback.
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Indeck Ronald S.
Muller Marcel W.
Cain David C.
Washington University
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