Method and apparatus for recording information using an energy b

Details Method and apparatus for recording information using an energy b Method and apparatus for recording information using an energy b

1993-11-24

1995-03-07

LaRoche, Eugene R.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 13, 369100, 369124, G11B 700

Patent

active

053964802

ABSTRACT:
A laser beam is radiated on a recording medium such as a phase transition type optical disk to change optical characteristics depending on a change in arrangement of atoms in a recording layer of the recording medium so as to repetitively record/erase information represented by the lengths of optical marks, the recording power of the laser beam radiated to record the information in the recording medium is changed stepwise in two or more power levels sequentially higher than an erasure power level of a laser beam radiated to erase the information recorded in the recording medium.

REFERENCES:
patent: 4939717 (1990-07-01), Ohno et al.
patent: 5084857 (1992-01-01), Miyauchi et al.
patent: 5123007 (1992-06-01), Miyauchi et al.
patent: 5257256 (1993-10-01), Terao et al.
patent: 5323374 (1994-06-01), Arsi et al.

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