Anti-fake printing method by two-dimensional encryption

A binary and hybrid screening technology, applied in the field of two-dimensional encrypted anti-counterfeiting printing technology, can solve the problems of difficult and effective anti-counterfeiting, easy forgery of anti-counterfeiting labels, and confusion between authentic and fake products

Inactive Publication Date: 2013-02-27
CHANGZHOU INST OF LIGHT IND TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anti-fake printing method by two-dimensional encryption
  • Anti-fake printing method by two-dimensional encryption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] In the process of loading anti-counterfeiting information figure 1 Among them, the anti-counterfeiting information is digitized to generate an eight-digit binary information table. The anti-counterfeiting information is image information, text information or trademark information. The i-th group of eight-bit binary information in the binary information table is denoted as Ni, and i is greater than or equal to The positive integer of 0, the eight-bit binary encrypted information is recorded as C, C is the positive integer of 0≤C≤256, the operator & adopts four operations of +, -, ×, ÷, the two-digit binary control variable is recorded as k, The variable k is a positive integer of 0≤k≤3. When k=0, Ni&C is defined as Ni+C. When k=1, Ni&C is defined as Ni-C. When k=2, Ni&C is defined as Ni×C. When k=3, Ni&C Defined as Ni÷C, set the initial value of the encryption parameter C, set the initial value of the control variable k as k=0, set the 8-bit binary information N in the b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an anti-fake printing method by two-dimensional encryption. According to the method, anti-fake information can be converted into a binary modulation signal by Ni&C encryption operation and channel encoding, and the anti-fake information is embedded in the full page in a circulating look-up table modulation manner in orderly change of shapes of amplitude modulation websites, so that the anti-fake information can be identified from any one fragment when a printed matter is identified. The method can be widely applied to the field of forgery prevention of printed matters.

Description

Technical field: [0001] The invention relates to an anti-counterfeiting printing technology, in particular to a two-dimensional encrypted anti-counterfeiting printing technology, 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 method adopted is to compile a set of numbers for each product, and the codes of each p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06K19/06H04N1/405
Inventor 王兰萍
Owner CHANGZHOU INST OF LIGHT IND TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap