Information recording method and device

Details Information recording method and device Information recording method and device

1997-09-30

1998-07-21

Edun, Muhammad N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, 369 58, 369 13, G11B 700

Patent

active

057843554

ABSTRACT:
A method of recording a bit stream on a Phase Change media by illuminating a laser beam on the Phase Change media includes assigning a predetermined number of channel bits to each bit of the bit stream, and assigning one of a highest power level, an intermediate power level, and a lowest power level of the laser beam to each of the channel bits so as to modulate the laser beam, wherein an arrangement of the highest power level, the intermediate power level, and the lowest power level for one bit of the bit stream depends on values of the one bit and an immediately preceding bit.

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patent: 5226031 (1993-07-01), Abe
patent: 5239531 (1993-08-01), Abe
patent: 5241524 (1993-08-01), Lee
patent: 5331612 (1994-07-01), Murakami et al.
patent: 5396480 (1995-03-01), Morishita et al.
patent: 5430696 (1995-07-01), Tokita et al.
patent: 5459701 (1995-10-01), Tokita et al.
European Search Report, dated Dec. 22, 1995.
European Patent Office, Patent Abstracts of Japan, Abstract of Japanese Publication No. JP4141826, published May 15, 1992.

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