Magneto-optic recording system and associated controllable heat

Details Magneto-optic recording system and associated controllable heat Magneto-optic recording system and associated controllable heat

1994-01-07

1995-11-21

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, G11B 1100

Patent

active

054694132

ABSTRACT:
A magneto-optic recording system writes information into a magneto-optic disc by applying a magnetic field to a selected position on the disc while directing a laser beam onto the disc. The laser beam is amplitude-modulated with a test pulse signal including a number of different amplitude pulses to write the test pulse signal in the disc. The test pulses thus written into the disc are read out and the smallest amplitude test pulse which has been read out from the disc is determined. The smallest amplitude depends on the temperature of the disc. The disc is heated in accordance with the determined smallest amplitude.

REFERENCES:
patent: 4670865 (1987-06-01), Hatano
patent: 5091896 (1992-02-01), Takeyama
patent: 5231614 (1993-07-01), Shindo et al.

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