Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1981-05-01
1983-05-24
Psitos, Aristotelis M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369275, 369286, G11B 700, G11B 724, G11B 726
Patent
active
043853722
ABSTRACT:
An optical data storage and recording material in which a reflective major surface layer is coated with an optically clear dielectric material having grooves therein. The dielectric material is itself transparent and data may be recorded by grooves created in the dielectric material. The grooves may have one depth primarily for destructive interference of light and another depth for interference and light scattering, thereby permitting two levels of encoding for prerecorded information, as well as user data formed by laser generated pits in the reflective major surface layer.
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patent: 3931459 (1976-01-01), Korpel
patent: 4161752 (1979-07-01), Basilico
patent: 4233626 (1980-11-01), Bell
patent: 4238179 (1980-12-01), Llabres et al.
patent: 4238843 (1980-12-01), Carasso et al.
patent: 4275091 (1981-01-01), Lippits et al.
patent: 4325135 (1982-04-01), Dil et al.
"Ten Billion Bits on a Disk"; IEEE Spectrum, Aug. 1979; Bulthuis et al., pp. 26-33.
Drexler Technology Corporation
Psitos Aristotelis M.
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