Magneto-optical record carrier with recording track structure su

Details Magneto-optical record carrier with recording track structure su Magneto-optical record carrier with recording track structure su

1995-06-07

1996-09-03

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 4438, 369110, 369116, G11B 1100

Patent

active

055530389

ABSTRACT:
A magneto-optical record carrier having a recording track structure which enables recording with an increased information density. Information areas which are smaller than the write spot supplied by a first diode laser can be written by means of a switched magnetic field. The areas can then be read with a read spot which is smaller than the write spot, which read spot is formed by radiation from, for example, the combination of a second diode laser and a frequency doubler. The width of the recording tracks determines the width of the information areas recorded thereon.

REFERENCES:
patent: 4922454 (1990-05-01), Taki
patent: 5065377 (1991-11-01), Spruit et al.
patent: 5442597 (1995-08-01), Spruit et al.

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