Optical memory medium and its information recording and erasing

Details Optical memory medium and its information recording and erasing Optical memory medium and its information recording and erasing

1991-08-28

1993-01-05

Nguyen, Hoa

Dynamic information storage or retrieval

Simultaneous diverse types of storage or retrieval

369 13, 369286, 369288, 369100, G11B 1304, G11B 1110, G11B 1112

Patent

active

051777177

ABSTRACT:
An information recording and erasing method and apparatus of an optical memory medium including a substrate, a guard film, and an intermediate layer portion so disposed between said substrate and said guard film as to include at least a recording material layer having a phase changing with temperature and include at least one good conductor layer, comprising the steps of supplying magnetic flux varying relatively to said good conductor layer to generate eddy currents within said good conductor layer, and heating said recording material layer with heat generated in said good conductor due to the eddy current loss to effect information recording and erasing with respect to said recording material layer.

REFERENCES:
patent: 3801966 (1974-04-01), Terao
patent: 4434429 (1984-02-01), Terao et al.
patent: 4499178 (1985-02-01), Wada et al.
patent: 4637008 (1987-01-01), Eden
patent: 4670345 (1987-06-01), Morimoto et al.
patent: 4773059 (1988-09-01), Minemura et al.
patent: 4773060 (1988-09-01), Shimada et al.
Patent Abstract of Japan, vol. 10, No. 351 (P-520) (2407), Nov. 27, 1986. (JP/61-150141).

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