Data reproducing device using a high-pass fir filter

Details Data reproducing device using a high-pass fir filter Data reproducing device using a high-pass fir filter

1997-11-21

1999-08-31

Tokar, Michael

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360 67, G11B 5035

Patent

active

059461543

ABSTRACT:
In data reproducing device, a reproducing signal is detected from a magnetic recording medium in which data is recorded, and an equalizer equalizes the reproducing signal. A sampling circuit samples the reproducing signal from the equalizer, and a filter having a characteristic of linearly delaying a phase of the reproducing signal in a frequency range not higher than a predetermined frequency performs filtering of the resulting sampled value. Thus, phase compensation in a low frequency range of the reproducing signal can be performed satisfactorily in comparison with the conventional device.

REFERENCES:
patent: 4888808 (1989-12-01), Ishikawa et al.
patent: 5097235 (1992-03-01), Reichel
patent: 5257312 (1993-10-01), Therssen et al.
patent: 5511080 (1996-04-01), Itoi et al.
patent: 5627694 (1997-05-01), Ido et al.

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