Encrypting anti-counterfeiting printing technology for modulating shapes of amplitude modulation dots of printed work through binary-system encrypting signal

Abstract

The invention discloses an encrypting anti-counterfeiting printing technology for modulating the shapes of amplitude modulation dots of a printed work through a binary-system encrypting signal. In the anti-counterfeiting printing technology, anti-counterfeiting information is subjected to encryption and channel coding to form a binary-system modulating signal and the anti-counterfeiting information is embedded into a whole page by sequentially changing the shapes of the amplitude modulation dots in a circulating table lookup modulation way. During recognition of the printed work, the anti-counterfeiting information can be recognized from any fragment, so the anti-breakage performance is high, the illegal replication based on a camera, a scanner, an electronic document and the like can be more effectively prevented and the technology can be extensively applied to the field of printed work anti-counterfeiting.

Description

Technical field: [0001] The invention relates to an anti-counterfeiting printing technology based on digital printed products, in particular to an encrypted anti-counterfeiting printing technology in which a binary encrypted signal modulates the shape of an AM dot on a printed product. The anti-counterfeiting printing technology can be used for anti-counterfeiting of various printed products. Background technique: [0002] The existing relatively common anti-counterfeiting methods are as follows: The first is laser anti-counterfeiting marks, which use laser recessive ink fluorescent ink printing technology to print product logos or special identification patterns into product anti-counterfeiting labels. And the same type of product uses the same label, because the anti-counterfeiting label is easier to forge, and the fake anti-counterfeiting label is used on the counterfeit product, causing the product to be confused, so it is difficult to effectively prevent counterfeiting. ...

AI Technical Summary

Problems solved by technology

[0002]The existing more common anti-counterfeiting methods are as follows: The first is laser anti-counterfeiting marks, which use laser hidden ink fluorescent ink printing technology to mark the product The anti-counterfeit label of the product is printed with the emblem or a special identification pattern, and the same kind of label is used for the same type of product, because the anti-counterfeit label is easier to forge, and the forged anti-counterfeit label is used on the counterfeit product, causing the product to be damaged. True and false are confused, so it is difficult to effectively prevent counterfeiting

The second is the password anti-counterfeiting label. The method adopted is to compile a set of numbers for each product, and the codes of each product are different. The numbers are printed on the labels and covered, and the numbers are stored Into the computer database that can be inquired by consumers. When consumers purchase products, they input the numbers on the logo into the computer database for comparison and identification through telephone or networked computers. The same is true, and the difference is false. Simple, easy to identify, not easy to forge, but in actual use, because the coded data is uniformly generated by the computer and printed on the label

In summary, the existing anti-counterfeiting methods have certain shortcomings, and thus cannot fundamentally prevent counterfeit products.

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