Magneto-optical disc recording and reproducing system with level

Details Magneto-optical disc recording and reproducing system with level Magneto-optical disc recording and reproducing system with level

1995-06-06

1997-11-04

Pascal, Robert

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

369 48, 369124, G11B 700

Patent

active

056847726

ABSTRACT:
A system of recording/reproducing data on and from a spiral or concentric track formed on a magneto-optical disc, in which a data recording area of the track is divided into a predetermined number of blocks. A reference data recording area is provided at a predetermined position of each of the blocks, in which continuous several bit data each of a high or low level is recorded, and, upon reproducing, a reproduced radio frequency signal is clamped at a signal level serving as a clamping level which is obtained by reproducing the data on the reference data recording area.

REFERENCES:
patent: 4706236 (1987-11-01), Yoda
patent: 4961182 (1990-10-01), Saito et al.
patent: 5107473 (1992-04-01), Fuji et al.
patent: 5189650 (1993-02-01), Watanabe et al.
The Complete Handbook of Magnetic Recording, by Finn Jorgensen, McGraw Hill Inc., 1988, p. 507 (Fig 22-20).

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