Digital signal reproduction apparatus for reading magneto-optica

Details Digital signal reproduction apparatus for reading magneto-optica Digital signal reproduction apparatus for reading magneto-optica

1990-03-26

1992-11-24

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

G11B 509

Patent

active

051668386

ABSTRACT:
A digital signal reproduction apparatus includes a first differential circuit for differentiating a reproduction signal reproduced from a recording medium. This differential circuit outputs a first order differential signal. A second differential circuit differentiates the first order differential signal of the reproduction signal and outputs a second order differential signal. A comparator compares the second order differential signal with a predetermined level to produce a window signal. A peak detecting circuit detects zero-cross points in the first order differential signal and outputs a peak detecting signal. A gate gates the peak detecting signal with the window signal to output a reproduction data signal.

REFERENCES:
patent: 4954903 (1990-09-01), Fuji et al.

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