Information reproducing circuit

Details Information reproducing circuit Information reproducing circuit

1994-06-13

1995-08-22

Epps, Georgia Y.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 47, 369124, G11B 700

Patent

active

054446880

ABSTRACT:
An information reproducing circuit which has a generator, having virtually the same frequency transfer characteristic as a recorder, for generating a slice signal whose level is larger than a negative peak level of a signal read out from a recording medium and smaller than a positive peak level thereof and a comparator for comparing a level of the readout signal and that of the slice signal so as to convert the readout signal into binary digits. The information reproducing circuit is designed to cancel jitter, contained in the readout signal, which occurs due to the frequency transfer characteristic of the recorder is cancelled by using the level variation of the slice signal, which occurs due to the frequency transfer characteristic of the generator. Therefore, a signal read out from the recording medium, even if jitter is contained therein, can be accurately converted into binary digits. Thus, the reliability of the reproduced data can be enhanced.

REFERENCES:
patent: 4575835 (1986-03-01), Nishikawa et al.
patent: 4706236 (1987-11-01), Yoda
patent: 4805047 (1989-02-01), Nasu et al.
patent: 5134607 (1992-07-01), Fuji et al.

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