Limited play optical devices with interstitial reactive layer and methods of making same
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United States of America Patent
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Apr 1, 2008
Grant Date -
Oct 26, 2006
app pub date -
Jun 5, 2006
filing date -
Jun 5, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data storage device comprises a first substrate and a second substrate, wherein at least the first substrate has defined thereon a plurality of pits and lands covered by a reflective material; and a bonding layer between the first and second substrates including a reactive agent that interferes with the passage of light in response to predetermined stimulus. In another embodiment, an optically-readable storage media, comprises a substrate having encoded data stored thereon, a reactive agent that, in response to predetermined stimulus, interferes with the passage of light of a predetermined frequency range, and a second reactive agent that, in response to predetermined stimulus, degrades the readability of the encoded data.
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