Multiple data surface optical data storage system

Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium

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3692751, 369288, G11B 724

Patent

active

056663447

ABSTRACT:
An optical data storage system comprises a multiple data surface medium and optical head. The medium comprises a plurality of substrates separated by a light transmissive medium. Data surfaces are located on the substrate surfaces. A layer of a semiconductor material is deposited onto each of the data surfaces. The thickness of the semiconductor layer determines the amount of reflectivity for each of the data surfaces.

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