Dynamic magnetic information storage or retrieval – Recording or reproducing an information signal and a control...
Patent
1996-02-28
1999-06-22
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Recording or reproducing an information signal and a control...
360 46, 360 68, G11B 2024
Patent
active
059148276
ABSTRACT:
A method and apparatus for implementing a noise generator in an integrated circuit read channel to optimize the performance of the signal channel. In the preferred embodiment resistors are used to generate noise. The noise source is buffered and the noise signal passes through a pre-amplifier stage. A differential current digital-to-analog converter controlled multiplier cell controls the amplitude of the noise signal. A switch connects the noise signal to a differential current output buffer, which is coupled to a signal channel.
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Coker, J. D., Galbraith, R. L., Kerwin, G. J., Rae, J. W. and Ziperovich, P. A., "Implementation of PRML in a Rigid Disk Drive," IEEE Transactions on Magnetics, vol. 27, No. 6, Nov. 1991, pp. 4538-4543.
Gruetter David R.
Yamasaki Richard
Brady III Wade James
Donaldson Richard L.
Psitos Aristotelis M.
Silicon Systems Inc.
Swayze, Jr. W. Daniel
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