US 7,010,123 B1Granted

Invisible graphics context identifying system and fabrication method thereof

OwnerChao Liuinventor

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Abstract

The discrimination system of the cryptic graph-text document and manufacturing method thereof is to digitize and decompose the cryptic document and fix them onto the surfaces of the digital reader and printed sheet, which present themselves as the cryptic documents. An array of numerous miniaturized lenses with specific focal lengths is distributed on the surface of the reader. When the printed sheet is covered with a specific digital reader at a specific location, the corresponding document is revealed and presents as the original document and alternating the darkness of the pattern from heavy to light and from invisible to visible gradually while changing the visual angle. Several digital readers are matched to one printed sheet, resulting in different cryptic patterns accordingly. The discrimination system is intuitive, simple and speedy, and is difficult to imitate. This technique is good for making licenses, bills, money notes, stamps, packages of goods, and all others that require anti-counterfeiting marks attached.

Claims7

Dependent claims

Discrimination system of cryptic graph-text including printed sheet and a digital reader matched, characterized in that:

the surface of the said printed sheet is fixed with a complete cryptic graph-text document, which comprises several individual cryptic graph-text documents and presents itself as a digital dot group with very high density and each of said individual cryptic graph-text documents is digitized and decomposed;
said printed sheet is made of transparent, translucent or non-transparent material;
said printed sheet can also be fixed with the above mentioned complete cryptic graph-text documents presented as the high density dot groups on both side and said printed sheet is made of the transparent or translucent material;
the surface of the said digital reader is fixed with a complete omni directional lens array or with several arrays on separated parts of the surface;
the surface of the vein is uneven or is smooth and many miniaturized lenses with specific focal lengths are distributed on it;
and
all arrays are fixed with convex lenses or holes or both of them;
the lenses are arranged in accordance with the pattern of the high density dot groups that are formed by one of the individual cryptic graph-text pattern digitized and decomposed, whereby the relationship of the individual cryptic graph-text documents and the complete cryptic graph-text documents can be expressed:
the enciphering system is M=f(a)×f(b)× . . . ×f(n),
where M(a,b,KK n)=f(a,b,KK n)×N(a,b,KK n)=Ma+Mb+KK+Mn=fa (Na)+fb(Nb)+KK+fn (Nn), wherein Mn is the individual cryptic graph-text documents of the decomposed digit reader, Mn is the Nth individual cryptic graph-text documents of the complete cryptic graph-text documents, and fa (Na)+Fb(Nb)+KK+Fn(Nn)=f(a,b,KK n)×N(a,b,KK n), and wherein, the complete cryptic graph text document is the sum of the individual cryptic graph-text documents.

7 more elements

Dependencies are inferred from the claim text.