Method and apparatus for initializing intermediate region betwee

Details Method and apparatus for initializing intermediate region betwee Method and apparatus for initializing intermediate region betwee

1993-06-25

1994-05-03

Pascal, Robert J.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

3692754, 360114, G11B 1100

Patent

active

053094166

ABSTRACT:
A method for initializing a magnetooptical recording medium having tracks onto which information is recorded are formed in parallel and having intermediate regions among the tracks. The method includes the steps of scanning a track by a laser beam while applying a magnetic field in a predetermined direction, thereby aligning magnetizing directions of the track; and scanning the intermediate region by the laser beam while applying a magnetic field in a predetermined direction, thereby aligning the magnetizing directions of the intermediate region. An apparatus to perform such a method is also disclosed.

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patent: 4703469 (1987-10-01), Pettigrew et al.
patent: 4706232 (1987-11-01), Funada et al.
patent: 4853912 (1989-08-01), Akasaka et al.

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