Marking and authenticating articles
First Claim
Patent Images
1. A method to apply an information bearing marking to an optical media, said method comprising:
- creating an image of an information bearing marking using a convention for representation of information;
exposing a surface of said optical media to UV light in a pattern derived from said image; and
, modifying an exposed area of said optical media with the UV light to reproduce said information bearing marking upon said optical media.
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Abstract
Disclosed herein are methods and apparatus for providing markings upon objects, including the read side of an optical information media, where the markings do not substantially interfere with object, including the use of the optical information media. This invention discloses use of a coating, marking schemes, printing of markings with UV light, as well as methods and apparatus for reading and deciphering said marking. Included is an authentication scheme, where the marking may be used as a lock to limit access to information contained in an optical information media.
200 Citations
36 Claims
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1. A method to apply an information bearing marking to an optical media, said method comprising:
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creating an image of an information bearing marking using a convention for representation of information;
exposing a surface of said optical media to UV light in a pattern derived from said image; and
, modifying an exposed area of said optical media with the UV light to reproduce said information bearing marking upon said optical media. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30)
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14. An optical media, comprising:
a readout area comprising an optically modified portion having a UV responsive information bearing marking disposed in said optically modified portion.
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23. A method for examining an optical media, comprising:
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providing an optical media with an information bearing marking disposed upon the readout side of said optical media;
illuminating said readout side of said optical media with UV light;
detecting said information bearing marking; and
,deciphering said information bearing marking.
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31. An object comprising:
a coating thereon, said coating comprising an optically modified portion having a ultraviolet responsive information bearing marking disposed in said optically modified portion. - View Dependent Claims (32, 33, 34, 35)
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36. An optical media, comprising:
a readout area comprising an optically modified portion having a UV responsive information bearing marking disposed in said optically modified portion, said information bearing marking comprising promotional information.
Specification