Reflective decoders for use in decoding optically encoded images
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United States of America Patent
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Oct 26, 2010
Grant Date -
May 21, 2009
app pub date -
Jan 28, 2009
filing date -
Sep 9, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A reflective decoding device is provided for use in decoding an encoded image comprising a latent image encoded using at least one encoding parameter. The device comprises a substrate with a reflective surface portion having a surface topography comprising a predetermined pattern of topographical features. The predetermined pattern is configured with at least one geometric characteristic corresponding to the at least one encoding parameter so that placement of a light-transmissive sheet having the encoded image formed thereon over the predetermined pattern of topographical features allows the latent image to be viewed.
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