Apparatus for detecting reproducing signal in recording media an

Details Apparatus for detecting reproducing signal in recording media an Apparatus for detecting reproducing signal in recording media an

1996-12-18

1999-05-25

Chung, Phung M.

Excavating

371 43, 371 45, 375262, H04L 108

Patent

active

059075678

ABSTRACT:
In a disk storage system using an RLL coding and an NRZ1 recording method and applying a (1+D) PR channel, a viterbi detector of the present invention includes an inverter for multiplying a present input by "-1"; a delay for delaying the output of the inverter for a predetermined time period; and a comparator for comparing the present input with a previous input supplied via the delay and outputting a specific value which varies its sign according to the result.

REFERENCES:
patent: 4903005 (1990-02-01), Sakashita et al.
patent: 5341387 (1994-08-01), Nguyen
patent: 5471502 (1995-11-01), Ishizeki

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