Limited play optical devices with interstitial reactive...

Details Limited play optical devices with interstitial reactive... Limited play optical devices with interstitial reactive...

2005-07-12

2005-07-12

Dinh, Tan (Department: 2653)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C428S064400

Reexamination Certificate

active

06917579

ABSTRACT:
Methods and apparatus are provided for making an optically readable storage media in which the reading beam passes through a bonding layer configured with a reactive material that transforms from an optically transparent state to an optically opaque state after exposure to a predefined stimulus, thereby inhibiting access to the data encoded on the optically readable storage media. The method includes steps of synthesizing a blocked dye combining the blocked dye with a carrier material curing the resultant combination deblocking the dye to produce a reduced dye in the resultant bonding layer exposing the optically readable storage media with the reactive material in its bonding layer to a predetermined stimulus. In a further aspect of the present invention methods and apparatus are provided for making an optically readable storage media wherein the reading light passes through the bonding layer and the data encoded information is encoded on the L1substrate. In yet another aspect of the present invention methods and apparatus are provided for making an optically readable storage media with at least two mechanisms for limiting access to the encoded data of the optically readable storage media.

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