Record reproduction apparatus

Details Record reproduction apparatus Record reproduction apparatus

1998-09-09

2000-09-19

Faber, Alan T.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 65, 375232, G11B 509

Patent

active

061221201

ABSTRACT:
A recording unit converts input data into a (1, 7) RLL code by a (1, 7) RLL encoder to record it onto a medium. A reproducing unit equalizes a regenerative signal from the medium by use of a transfer function (1+D) (1+1.5D+D.sup.2) of an equalizer 44. After the limitation to a narrow band up to a spectrum null by a lowpass filter, the reproducing unit detects data by a maximum likelihood detector and decodes original data from (1, 7) RLL code data by means of a (1, 7) RLL decoder.

REFERENCES:
patent: 5150379 (1992-09-01), Baugh et al.
patent: 5287385 (1994-02-01), Sugawara et al.
patent: 5550683 (1996-08-01), Koren
patent: 5689532 (1997-11-01), Fitzpatrick
patent: 5917862 (1999-06-01), Shimoda
patent: 6046874 (2000-04-01), Takahashi

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