Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1987-11-23
1989-12-19
McElheny, Jr., Donald
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369275, G11B 724, G11B 700
Patent
active
048887587
ABSTRACT:
An information storage system includes a memory medium having a layer of an amorphously transformable, stable metal upon a substrate, a laser or other directed energy source for changing the state of discrete regions of the layer between the amorphous and the crystalline states, in a controllable pattern to store information in the pattern, a beam source to cause X-ray or electron emission from a local region of the metallic layer, and an X-ray or electron detector for analyzing X-rays or electrons from the region to determine whether the region is amorphous or crystalline. Discrete regions are transformed to the amorphous state by heating them above the melting point and permitting them to solidify rapidly. Those regions are transformed back to the crystalline state by heating them above their crystalline transformation temperature, but not above the melting point, using the laser operating at a reduced power level.
REFERENCES:
patent: 3949307 (1976-04-01), Chaudhari et al.
patent: 4238803 (1980-12-01), Terao et al.
patent: 4298975 (1981-11-01), vander Veen et al.
patent: 4569881 (1986-02-01), Freese et al.
patent: 4615944 (1986-10-01), Gardner
patent: 4680742 (1987-07-01), Yamada et al.
patent: 4710911 (1987-12-01), Yamada et al.
patent: 4773059 (1988-09-01), Minemura et al.
patent: 4773060 (1988-09-01), Shimada et al.
Scruggs David M.
Zabsky John M.
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