Digital signal reproducing circuit

Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier

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G11B 1514

Patent

active

051268930

ABSTRACT:
The present invention discloses a circuit for reproducing a digital signal which is recorded on a recording medium with high density. The reproducing circuit of the present invention adds an output obtained by differentially amplifying the signal, picked up with a playback head, with respect to a predetermined reference voltage, an amplified output delayed by a predetermined time 1T and a different amplified output delayed by 2T, thereby widening the pulse width of the reproduced waveform to be equalized. Accordingly, even a feeble isolated pulse of high density can be exactly reproduced, and the deterioration of the reproducing picture quality or the sound quality can be prevented.

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