Data storage device having a phase change memory medium reversib

Details Data storage device having a phase change memory medium reversib Data storage device having a phase change memory medium reversib

1987-07-20

1990-05-08

Hecker, Stuart N.

Static information storage and retrieval

Radiant energy

Amorphous

346 76L, 430945, 369286, 365163, 365215, G11C 1300, G11B 370, G01D 1510

Patent

active

049244361

ABSTRACT:
A method and apparatus for direct, single beam, overwrite of new data over existing data in a phase change optical data storage device are disclosed. This eliminates the need for an intermediate erase step.

REFERENCES:
patent: 4633273 (1986-12-01), Watanabe et al.
patent: 4660175 (1987-04-01), Strand
patent: 4667309 (1987-05-01), Hennessey
patent: 4710911 (1987-12-01), Yamada et al.
patent: 4719594 (1988-01-01), Young et al.
Watanabe et al., "New Optical Recording Material for Video Disc System", Jour. of App. Physics, vol. 54, #3, Mar. 1983, pp. 1256-1260.

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