Reflective optical data storage and laser recording media...

Details Reflective optical data storage and laser recording media... Reflective optical data storage and laser recording media...

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

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