Binary anti-counterfeit printing method by single-parameter gradient and leftward-shifting deflecting and stepping increasing encryption

Abstract

The invention provides a binary anti-counterfeit printing method by single-parameter gradient and leftward-shifting deflecting and stepping increasing encryption. According to the method, the binary anti-counterfeit information is converted into a binary modulating signal by encrypting operation and channel coding; the anti-counterfeit information is nested into the whole page based on the ordinal variation of the shapes of amplitude-modulated dots according to a modulating mode under circulating look-up table; and the anti-counterfeit information can be distinguished from any fragment during distinguishing printing materials. The method can be widely applied to the field of counterfeit preventing of printing materials.

Description

Technical field: [0001] The invention relates to an anti-counterfeiting printing technology, in particular to a single-parameter progressive left-shift displacement step-increasing binary anti-counterfeiting printing technology. 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. The second is the password anti-counterfeiting label. T...

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 through telephone or network access computer for comparison and identification. The same is true, and the difference is false. The method is simple and easy to identify. It is 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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