RU2345412C1 - Method of tagging-out and object identification - Google Patents

Abstract

FIELD: physics, tagging-out.

SUBSTANCE: invention concerns the means intended for tagging-out of protected objects and for realisation of effectual measures of counteraction to not authorised reproduction. Method includes drawing through a profile board on a surface of a polymeric film of protective scores, including microscopically small optically-active structures. Thus through a profile board superimpose the base markers setting a co-ordinate net, and protective scores in a view of nanopoints or nanogeometric figures, and protective scores and markers are transparent in a visible gamut. Shine with their primary UV-radiation, and secondary radiation is IR-radiation or UV-radiation, spot co-ordinates of protective scores which will converse to a numeral signal in the form of one-to-one function, and compare it to the initial function set in the reading out device-scanner.

EFFECT: increase of reliability of object protection.

3 cl, 4 dwg

Description

The invention relates to means intended for marking protected objects and for implementing effective measures to counter unauthorized reproduction (protection of a barcode of a manufactured product, banknotes, plastic cards, antiques, drugs, etc.).

Marking and identification methods are known, for example, MIL-STD-1189 or the “European Article Numbering Code”, for which the information is contained in the arrangement of bar-elements and gaps of different widths. Using a simple printing method, the line elements are applied in a color contrasting with the gaps on a medium, usually paper or a plastic plate, etc. Readers are available that can read such barcodes. A known method in which marking objects with data containing encoded information or an electronic digital signature is carried out by supplying the object with a memory device or storage medium with the specified data or applying the specified data to the object. Authentication is carried out using an identification device configured to convert data into messages that are verified by cryptographic algorithms. For example, RF patent No. 2281552, IPC G06K 5/00, published in 2003.

The closest analogue to this invention is the method described in RF patent No. 2291485, IPC G06K 7/00, published in 2003. A method for marking and identifying an object in which protective marks are applied through a template to a protected product or label in the form of a diffractive relief stroke - a code consisting of narrow rectangular fields and intermediate surfaces coated with microscopically small optically active structures. It is the mutual arrangement of narrow rectangular fields and intermediate surfaces that is encoded information of the protected product. When reading this information, the protected product or label is illuminated by incident light, which is diaphragmed from narrow rectangular fields and polarized from intermediate surfaces, and this backscattered radiation is read by a scanner reader. In addition, to increase the degree of protection add a second layer, applied under certain conditions. But this method has a limited density of security labels, determined by the structure of the code, reading and decrypting encoded information requires a large amount of RAM for processing and subsequent transmission over networks.

The objective of the invention is to provide a method with enhanced performance.

The technical result is an increase in the reliability and quality of product protection, the possibility of contactless reading and ensuring the impossibility of counterfeiting or replacing marked objects, a small amount of memory for processing reading information and the possibility of reproduction based on existing technologies.

This is achieved by the fact that in the proposed method for marking and identifying an object, including applying protective labels through a template to a surface consisting of microscopically small optically active structures, illuminating the surface with primary radiation, converting secondary radiation into a digital signal using a scanner reader and comparing this digital signal with the parameters specified by the template and stored in the memory of the scanner reader, in contrast to the known, microscopes are applied through the template very small optically active structures on the surface of the polymer film in the form of basic markers defining the coordinate grid and protective marks in the form of nanodots or nanogeometric figures, the protective marks and markers being transparent in the visible range and illuminating them with primary UV radiation, and the secondary radiation is IR radiation or UV radiation, determine the coordinates of the security labels, which are converted into a digital signal in the form of a one-to-one function and compare it with the function specified in the reader scanner.

In addition, add at least one more polymer film with protective labels applied, the base markers of which are combined with the basic markers of the first film, and it is possible to read the coordinates of only those security labels that are previously set in the scanner reader.

The invention is illustrated by drawings, which depict:

figure 1 is a diagram of the application of protective marks on the surface;

figure 2 is a diagram of the application of protective marks on the surface of two films;

figure 3 is a diagram of the application of true security labels on the surface of the polymer film and simulated security labels;

figure 4 - graphs of one-to-one functions of true security labels and simulated security labels.

Figure 1 shows a polymer film 1. Base markers 2 are applied to it and depicted as circles. Protective labels 3 are deposited on the surface of the polymer film 1 and are shown in FIG. 1 as black dots active in the infrared region of the spectrum, and protective labels 4 in the form of rectangles active in the UV region. The polymer film 1 is closed on both sides by wear-resistant films 5, transparent in the IR and UV spectral range.

Figure 2 shows a polymer film 1, on which a wear-resistant film 5 and a second polymer film 6 are glued on both sides, which, in turn, is protected on the other hand by a wear-resistant film 5. Base markers 2 are applied to the polymer film 6, which are aligned with basic markers of the polymer film 1, and protective labels 3 and 4 having different coordinates compared to the film 1.

Figure 3 shows a polymer film 1 with a coordinate system, indicated by basic markers, marked in the form of large black circles and placed at the corners of the square, on which the true protective marks 3 and 4, marked as asterisks, are applied. In addition, this polymer film 1 is combined with the polymer film that they are trying to fake. Suppose that all simulated security labels 7, designated as small black circles, coincide with the true security labels 3 and 4, except for one.

Figure 4 shows a graph of a one-to-one function constructed after determining the coordinates of the true security labels 3 and 4, indicated as asterisks (curve G1), and a graph of a one-to-one function, constructed after determining the coordinates of the simulated security labels 7, indicated (Fig. .3) in the form of black circles (curve G2). Suppose that all simulated marks 7 marked as black dots coincide with the true security marks 3 and 4, except for one. From the graphs in figure 4 shows a distinct difference in one-to-one functions. Due to this difference, a fake signal is generated in the scanner reader. The proposed method for marking and identifying an object is carried out in the following sequence. First, a template is made on which holes are made for applying base markers 2 and protective marks 3 and 4 onto the surface of the polymer film 1. As a protected object, stamps, tags with bar codes, plastic cards, banknotes, antiques, etc. can be used. the fabricated template (not shown in FIGS. 1, 2) on the surface of the polymer film 1 (FIG. 1), basic markers 2, shown in the form of circles, security labels 3, shown in the form of black dots, and security labels 4, in the form of rectangles, are applied . Using the basic markers 2, a coordinate grid with the origin and its orientation is set on the template. Moreover, the coordinate system can be rectangular (x, y coordinates) or polar (distance and angle). Protective tags 3 and 4 are nanoclusters of rare-earth ions or other optically active materials specially selected for secondary luminosity in the infrared and ultraviolet regions. They in the form of protective marks 3 and 4 are applied by sputtering, epitaxy, electrodeposition, etc. onto a polymer film 1 that transmits photons in a given region of the spectrum. Protective tags 3 and 4 can be made in the form of nanodots or nanogeometric clusters (stars, hearts, etc.). The security tags 3 and 4 and the base markers 2 are transparent in the visible optical range. Then the polymer film 1 is fixed, for example, glued, to the protected product or label, brand, tag. For identification, the polymer film 1 is illuminated with primary UV radiation and the secondary radiation is read using a scanner reader. To do this, first, the scanner reader determines the base markers 2 on the polymer film 1 to build a given coordinate grid. Secondary radiation enters the scanner, where the coordinates of protective labels 3 and 4 are determined and converted into a one-to-one function, the parameters of which must coincide with the parameters stored in the scanner reader.

Figure 2 shows two polymer films 1 and 6, which are placed one below the other to increase the degree of protection, with combined base markers 2, between which there is a wear-resistant film 5, but polymer films 1 and 6 can be applied without a wear-resistant film 5 between them.

In addition, in the scanner reader, the number of predetermined read coordinates M of the security labels may not coincide with the total number of security labels applied N.

The volume C of the posted information (information capacity, including the size of characters and code capacity) is determined by the formula [Reference for special functions. Edited by M. Abramowitz and I. Stigan, Moscow, Science, Ch. ed. Phys.-Math. literature, 1979, p. 625].

where N is the complete set of applied protective labels; M is the number of security labels that are set in the reader scanner; ! - a factorial sign.

To assess the gain P in terms of the amount of information posted, we take for comparison the most developed, as far as we know from the article Andy Longacre, Jr., a method for applying information to products in the form of two-dimensional barcodes. Take for example the size of 125 × 125 characters and code capacity.

Then for our case, the gain P is determined by the formula:

where the values of H and W - are used to indicate the size of the matrix horizontally and vertically and determine the number of characters (H) and code capacity (W). Assuming in the formula (1) N = 125, M = 70 and taking H = W = 125, we obtain an estimate of the value of P according to the formula (2):

P = 125! / (70! × 55! × 125 ² ) ~ 10 ³² .

The one-to-one function (the function of the generalized average FOS) and the method of its expression with the minimum number of adjustable parameters (6-8) are sufficient for an unambiguous description of the given N> 125 number of protective labels. Details of the rationale for this claim are set forth in R.R. Nigmatullin. "The statistics of the fractional moments: Is there any chance to read" quantitatively "any randomness?" Journal of Signal Processing, 86 (2006) pp. 2529-2547.

The advantages of this method:

- to ensure the impossibility of counterfeiting, since the set of combinations of the location and reading of the security labels is equal to (or more with an increase in the size of the matrix) of ~ 10 ³² ;

- a method for unambiguously reading the location and number of security tags M specified by the scanner device program is known only to the manufacturer and cannot be reproduced in any other way;

- due to the small volume of the processing program that converts the coordinates M of the protective labels into a one-to-one function, characterized in turn by 6-8 quantitative parameters, the dimensions of the portable reader-scanner can be significantly reduced and designed as a small attachment connected to the serial mobile phone. The entire processing program can be “wired” into a microchip with closed access to it.

Claims (3)

1. A method of marking and identifying an object, including applying through a template protective labels on the surface, consisting of microscopically small optically active structures, illuminating the surface with primary radiation, converting secondary radiation into a digital signal using a scanner reader and comparing this digital signal with parameters defined by the template and stored in the memory of the scanner reader, characterized in that microscopically small optically active structures are applied through the template on the surface of the polymer film in the form of basic markers defining the coordinate grid and protective marks in the form of nanodots or nanogeometric figures, the protective marks and markers being transparent in the visible range and illuminating them with primary UV radiation, and the secondary radiation is IR radiation or UV -radiation, determine the coordinates of the security labels, which are converted into a digital signal in the form of a one-to-one function, and compare it with the function specified in the reader scanner. 2. The method according to claim 1, characterized in that at least one more polymer film with protective labels is applied, the base markers of which are combined with the base markers of the first film. 3. The method according to claim 1, characterized in that the coordinates of only those security labels are read, the coordinates of which are predefined in the reader scanner.

Images