Reducing a visible presence of an optically readable tag

Details Reducing a visible presence of an optically readable tag Reducing a visible presence of an optically readable tag

2011-01-25

2011-01-25

Le, Thien M (Department: 2887)

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Particular code pattern

C235S454000

Reexamination Certificate

active

07874495

ABSTRACT:
Various embodiments of substantially visibly transparent optically readable tags are disclosed. In one disclosed embodiment, a tag formed on a substrate comprises a first bit value structure that comprises a higher reflectance than transmittance at one or more infrared wavelengths and a higher transmittance than reflectance at one or more visible wavelengths, and a second bit value structure that comprises a higher absorbance than transmittance at one or more infrared wavelengths and a higher transmittance than absorbance at one or more visible wavelengths.

REFERENCES:
patent: 4605846 (1986-08-01), Duret et al.
patent: 5745173 (1998-04-01), Edwards et al.
patent: 6509559 (2003-01-01), Ulrich et al.
patent: 6554452 (2003-04-01), Bourn et al.
patent: 6581839 (2003-06-01), Lasch et al.
patent: 6603103 (2003-08-01), Ulrich et al.
patent: 6634552 (2003-10-01), Smith et al.
patent: 6650022 (2003-11-01), Qi et al.
patent: 7204428 (2007-04-01), Wilson
patent: 2004/0130771 (2004-07-01), Carlson
patent: 2006/0091333 (2006-05-01), Cochran et al.
patent: 2007/0008595 (2007-01-01), Watanabe et al.
patent: 2007/0125863 (2007-06-01), Jakoboski et al.
Boukraa, et al., “Tag-Based Vision: Assisting 3d Scene Analysis with Radio-Frequency Tags”, 2002, IEEE, pp. I 269-I 272.
Hollows, “Infrared Cameras Enhance Machine-Vision Systems”, 2007, PennWell Corporation, pp. 1-4.
Poling, “Designing a Machine-Vision System”, SPIE's oemagazine, 2002, pp. 34-37.

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