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Method and device for securing documents

A document and security technology, which can be applied to equipment, computer security devices, record carriers used by machines, etc., using electrical recording technology of charge patterns, and can solve problems such as difficulties.

Active Publication Date: 2010-06-23
ADVANCED TRACK & TRACE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve these inconveniences, especially the difficulties and defects of using known identification methods based on the unique physical properties of the document nature

Method used

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  • Method and device for securing documents
  • Method and device for securing documents
  • Method and device for securing documents

Examples

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Embodiment Construction

[0090] Before giving details of various specific embodiments of the invention, definitions that will be used in the specification are given below.

[0091] "Information Matrix": This is a machine-readable physical representation of information, usually attached to a solid surface (unlike watermarks or digital watermarks, which modify the pixel values ​​of the pattern to be printed). Information matrix definitions include, for example, 2D barcodes, 1D barcodes and other less intrusive devices for representing information, such as "Dataglyphs";

[0092] "Document": this is any (physical) object with an information matrix;

[0093] "marking" or "printing": any method by which you go from a digital image (including information matrices, documents, etc.) Methods include: inkjet, laser, lithographic and thermal printing, as well as embossing, laser etching and holographic generation. Also included are more complex methods such as casting, where a digital image is first engraved on...

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PUM

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Abstract

The invention relates to a method for securing documents that comprises the step of printing a distribution of points on said document, said printing inducing due to printing randomness a point-by-point unpredictable variation of at least one geometrical variation of the printed points and, before said printing step, the step of generating said point distribution so that the points of said distribution have at least one variable geometrical characteristic between them, the geometrical amplitude of the variation generated having the same magnitude as said unpredictable variation. In some embodiments, during the generation step and in said point distribution, at least one half of the points of said distribution are not laterally juxtaposed to four other points of said point distribution, and at least one dimension of at least a portion of the points of said point distribution has the same magnitude as the average of the absolute value of said unpredictable variation.

Description

technical field [0001] The present invention relates to methods and devices for securing documents. In particular, it is envisaged to identify documents in a unique manner, to authenticate documents, i.e. to be able to detect copies thereof and / or information about the document carried on it, such as information identifying the owner of the intellectual property related to the document and / or Information about where it was generated. The term document includes all data carriers, such as hardcopy documents, blueprints, packaging, manufactures, moldings and cards, such as identity cards or bank cards. Background technique [0002] Printing of different types of documents is divided into two groups: one group is called "static", in which each file receives apparently the same printing marks, such as "lithographic" to simulate printing methods, and the other group is called "serial "digital, in which each document receives individual items of information, such as the method of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06G03G21/04G07D7/20
CPCH04N2201/327G06K19/06037G03G21/046H04N1/32272G06K19/06046H04N1/3232G06K19/086G06K9/00577G06K9/00Y10S283/902G06F21/608G06K19/10H04N1/32203G03G2215/00299H04N1/0087G06K19/06178G06V20/80G06T1/005
Inventor 贾斯汀·彼卡德让·皮埃尔·马西科特阿兰·富库奇比戈纽·萨冈
Owner ADVANCED TRACK & TRACE SA
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