Information recording apparatus, method and computer program pro

Details Information recording apparatus, method and computer program pro Information recording apparatus, method and computer program pro

1996-10-16

1998-03-24

Nelms, David C.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, 3692752, 369 59, G11B 700

Patent

active

057320624

ABSTRACT:
In an information recording system, information is recorded, through light from a light source, in a recording medium comprising a recording layer which has a phase reversibly changeable between a crystal phase and an amorphous phase. The light source emits, for forming a record mark in the recording layer, multi-pulse light which includes a head heating pulse, a head cooling pulse and following rear heating pulse and rear cooling pulse in the stated order. The head heating pulse includes a front division and a rear division. The difference in light-emission power between the head heating pulse and an immediately following cooling pulse is larger than the difference in light-emission power between another heating pulse and an immediately following cooling pulse.

REFERENCES:
patent: 5156693 (1992-10-01), Ide et al.
patent: 5608710 (1997-03-01), Minemura et al.
patent: 5636194 (1997-06-01), Furumiya et al.
patent: 5648952 (1997-07-01), Maegawa et al.

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