Data recording/reproducing device and recording medium

Details Data recording/reproducing device and recording medium Data recording/reproducing device and recording medium

1997-08-18

1999-12-07

Hindi, Nabil

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 54, G11B 700

Patent

active

059995068

ABSTRACT:
The data recording/reproducing device according to the present invention, in response to the detected signal output from the data error detector, repeats a reading operation to form a data from a reproduced signal. The gate signal generator includes an envelope detector and a comparator. The envelope detector has a time constant which is changed in accordance with the detected signal output from the data error detector, and forms a threshold signal that generally follows a level variation of the reproduced signal in accordance with the time constant. The comparator compares the reproduced signal and the threshold signal output from the envelope detector so as to form the gate signal.

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