Multilayer optical information storage medium based on incoherent signal
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United States of America Patent
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Feb 18, 2003
Grant Date -
N/A
app pub date -
Feb 11, 2000
filing date -
Feb 12, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multilayer optical information storage medium, such as a card, uses a luminescent, fluorescent, or electroluminescent material to reproduce information in the form of incoherent radiation. Each layer has multiple pages of information. A specific page on a specific layer is addressed by moving the card relative to a read head so that the image of the specific page to be read is focused on the read head. This can be accomplished by moving the card in the X, Y, and Z directions, or by holding the card stationary and by moving a two-dimensional image detector in the X, Y, and Z directions.
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