Device and signal processing circuit for magnetic recording,...

Details Device and signal processing circuit for magnetic recording,... Device and signal processing circuit for magnetic recording,...

2005-06-28

2005-06-28

Faber, Alan T. (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Pulse crowding correction

C360S053000, C360S065000

Reexamination Certificate

active

06912100

ABSTRACT:
A magnetic recording/reproducing apparatus includes a partial-response equalization circuit having frequency characteristic of cutting off low-frequency signal components inclusive of DC components; and a maximum-likelihood decoder, in which a reproduced signal outputted from the reproducing head is processed by the partial-response equalization circuit and then inputted into the maximum-likelihood decoder to be data-reproduced, thereby reducing a noise and distortion on the reproduced signal and reducing a data detection error rate.

REFERENCES:
patent: 5581568 (1996-12-01), Togami
patent: 2002/0060869 (2002-05-01), Sawaguchi et al.
patent: 11066755 (1999-03-01), None
Messerschmitt, “Design of a finite impulse response for the Viterbi algorithm adn decision-feedback equalizer,” Processing of ICG, Jun. 1974.
Haykin,Introduction to Adaptive Filters, Dec. 1984.

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