Multi-dimensional encryption anti-counterfeiting printing technology based on shape of amplitude modified screen

Abstract

The invention discloses a multi-dimensional encryption anti-counterfeiting printing technology based on the shape of an amplitude modified screen, the anti-counterfeiting printing technology can be used for digitizing anti-counterfeiting information and generating a multi-dimensional encryption octal anti-counterfeiting information table with eight bits in each group, an octal modulation signal is generated by virtue of encryption and channel coding, the anti-counterfeiting information is embedded in the whole page by ordered changes in the shape of the amplitude modified screen through circulating table search and modulation of the amplitude modified screen, and the anti-counterfeiting information can be recognized from any fragment when a printed product is recognized, thereby having very strong anti-fragmentation property, fighting against illegal replication behavior based on a camera, a scanner, an electronic document and the like more effectively and being widely applied in the anti-counterfeiting field of printed products.

Description

Technical field: [0001] The invention relates to an anti-counterfeiting printing technology based on digital printed products, in particular to a multi-dimensional encrypted anti-counterfeiting printing technology based on the shape of amplitude modulation dots, which 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. The second is the password anti-counterfeiting label. The met...

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, it is impossible to fundamentally prevent counterfeit products

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