Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1997-01-10
2000-12-12
Dinh, Tan
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
369281, 369 94, G11B 724
Patent
active
061607878
ABSTRACT:
A double sided (or higher multiple sided) data storing compact disc for optically recorded data has data surfaces that are separated by a thin film of wavelength selective material that passes light of one frequency and reflects light of a second (or multiple) frequency. The thin film either passively relies upon the inherent interference between light signals reflected from its upper and lower surfaces or is an active material that reflects light of one frequency and transmits light of a second frequency. A further aspect of the present invention is the method for the manufacture of such a multi-surfaced disc.
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Carey Deborah H.
Cookson Christopher
Marquardt, Jr. Richard
Orehotsky John L.
Pietrzykoski Anthony
Dinh Tan
WEA Manufacturing Inc.
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