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Dual-verification anti-counterfeiting method based on pattern hiding

A double-authentication and re-authentication technology is applied to record carriers, instruments, and calculations used by machines to achieve the effect of enhancing anti-counterfeiting

Inactive Publication Date: 2011-04-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is an anti-counterfeiting method with pattern hidden double verification, which can overcome the shortcomings of the single verification method, and can greatly enhance the anti-counterfeiting strength of the anti-counterfeiting mark

Method used

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  • Dual-verification anti-counterfeiting method based on pattern hiding

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Embodiment Construction

[0015] The double authentication and encryption method that the present invention will provide, first adopts the diffraction grating encryption technology to transform the "pattern to be hidden" into a "plane optical element". Identify the information content hidden within.

[0016] Then, the first verification - dual card verification:

[0017] Make identification cards and detection cards for double-card encrypted anti-counterfeiting verification marks. On the identification card and the detection card are two other patterns different from the "pattern to be hidden", which are called "identification card pattern" and "detection card pattern". "Plane Optical Elements" of "pattern" information.

[0018] When the detection card is overlapped with the identification card, the information of "pattern to be hidden" can be presented. This is the first simple verification method. The detection card is made of transparent material, which is more complicated than the moiré fringe ...

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Abstract

The invention discloses a dual-verification anti-counterfeiting method based on pattern hiding. The method comprises the following steps: converting a pattern to be hidden into plane optical elements, selecting the other two patterns, and filling the selected other two patterns by stripes of the plane optical elements to be respectively used as an identification card pattern and a detection card pattern; then, manufacturing the identification card pattern on an anti-counterfeiting identification to form an identification card; manufacturing the detection card pattern on a transparent material to obtain a detection card; in the detection process, when the detection card and the identification card are overlapped, showing the pattern to be hidden as primary verification for distinguishing the truth; and when lasers are used for irradiating the identification card pattern on the identification card, showing the pattern to be hidden again as secondary verification. The method has the advantage that since a dual-verification and information encryption mode is adopted, the anti-counterfeiting capability is strong.

Description

technical field [0001] The invention belongs to the technical field of information hiding and anti-counterfeiting, and relates to a double verification anti-counterfeiting method based on pattern hiding. The method adopts grating information encryption and dual-card information encryption to mutually verify anti-counterfeiting. Background technique [0002] At present, most of the verification methods in the anti-counterfeiting field adopt a single verification method. For example, the anti-counterfeiting method of Moiré stripes is based on the classic Moore theory, which encodes and encrypts the existing pattern, that is, the pattern is modulated with a group of stripes so that it cannot display the information originally set; when another group of stripes is set When placed on it, the original pattern can be reproduced. This method is easy to imitate because the modulation of the stripes is relatively simple, and the anti-counterfeiting strength is low. Contents of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06
Inventor 曹汉强陈汝钧
Owner HUAZHONG UNIV OF SCI & TECH
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