Magnetic reproducing apparatus with partial response decoder inc

Details Magnetic reproducing apparatus with partial response decoder inc Magnetic reproducing apparatus with partial response decoder inc

1994-07-22

2000-09-19

Loomis, Paul

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 51, G11B 509

Patent

active

06122118&

ABSTRACT:
A magnetic reproducing apparatus plays back a magnetic recording medium on which digital data have been magnetically recorded through a partial response encoder. The magnetic reproducing apparatus includes a synchronizing signal data detector for detecting a synchronizing signal data part from a reproduced signal data series, a transmission path characteristics estimator for modeling an impulse response between a recording system and a reproducing system with the synchronizing signal data part detected by the synchronizing signal data detector being used as a reference signal, and a decoder for decoding a recorded signal data series according to a Viterbi algorithm based on a transmission model produced by the transmission path characteristics estimator.

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patent: 5357524 (1994-10-01), Shimpuku et al.
R.D. Cideciyan et al.; "A PRML System for Digital Magnetic Recording" IEEE Journal on Selected Areas in Communications; vo. 10, No. 1, Jan. 1, 1992; p.38-56, XP000457625.
J.G. Proakis; Digital Communications, 2.sup.nd Edition, 1989 McGraw-Hill, NY XP002053620, p. 624 and 627.
W.H. Press et al.; "Numerical Recipes; The Art of Scientific Computing" 1986, Cambridge University Press, Cambridge XP002053621 P. 31 and 38.

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