G - Physics – 11 – B
Patent
G - Physics
11
B
352/32, 352/32.4
G11B 7/00 (2006.01) G11B 7/013 (2006.01) G11B 7/24 (2006.01) H04N 5/76 (2006.01)
Patent
CA 1181518
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.
402029
Drexler Technology Corporation
Smart & Biggar
LandOfFree
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