Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Patent
1997-03-21
1999-11-23
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
360 48, 360 51, 360 65, G11B 509, G11B 5035
Patent
active
059911077
ABSTRACT:
A synchronous read channel is disclosed which samples an analog read signal from a magnetic read head positioned over a magnetic disk medium, computes a DC offset in the sample values in real time, and subtracts the DC offset from the read signal. This attenuates the deleterious affect a DC offset has on the detection algorithm used to detect the recorded data, such as the Viterbi detection algorithm.
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Behrens Richard T.
Dudley Trent O.
Glover Neal
Welland David R.
Cirrus Logic Inc.
Neal Regina Y.
Psitos Aristotelis M.
Sheerin Howard H.
Shifrin Dan A.
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