The authentication method is cash or warranty document and device for its implementation (options)

 

(57) Abstract:

The invention relates to money or guarantee documents rectangular shape containing the printed graphic image and symbols protection, in particular, to Bank tickets. Feature used in the invention of documents is the first sign of protection in the form of a periodic grid of parallel lines watermark located at a certain angle to the first (long) edge of the document and merge it with the second character of the protection executed in parallel to the first edge of the document stripes printed graphic image of the same width, in which the different reaction of at least one of the colors of this image for different relative to the middle of the second edge of the document pairs symmetric bands for electromagnetic radiation of a specified wavelength range (e.g., infrared radiation), so it ensures that the encoding of these bands symmetrically relative to the middle of the second edge of the document. When checking the document is moved past the radiation detectors arranged perpendicular to the direction of movement coincident with the first edge of the document. If the angle is less direct, the sensors replacement and displace one group from another in the direction of movement of the document by half the wavelength of the wavy relief watermark in the cross-section of the first sign of protection, perpendicular to the direction of parallel lines. The sensor signals in both cases are subjected to appropriate processing for the extraction signal corresponding to this undulating terrain watermark. 4 C. and 15 C. p. F.-ly, 21.

The invention relates to monetary documents, in particular Bank tickets or warranty documents related to the type of documents containing printed graphic image and signs protection, and more specifically to the analysis of documents containing two stacked on top of each sign of protection.

To determine the authenticity of the documents has already been used numerous signs recording, but these signs in General apply only to one type, and the means for their analysis in this case adapted to the specific question type mark protection.

Known documents, signs which are made using the magnetic wire, completely or at intervals hidden in a paper wrapper of this document, and the wire may be additional coding. Such documents are well adapted to automated controls designed to detect the presence of magnetic wire in prepractice has limited the effectiveness of determining the authenticity of documents and requires the use of complex types of encoding.

There are also documents, signs of protection which is based on the principle of changing the density of the fibers (bulk or surface weight), with special coding. As a result it was proposed periodic embossed in dry form on the strip parallel to the edge of the document with the specified stamping, used in the manufacture of paper, allows you to change the volumetric mass along a specified band due to flattening a specified band when you print the document. Alternatively, use a sequence of stages stamping and protivotumanki forming fabric, which allows to obtain a sequence of light and dark areas on the document, in accordance with a special watermark type mesh watermarking, which can be periodic or aperiodic.

This technology, however, limited, as is largely dependent on orientation (large or small edges parallel to the direction of passage), from the treatment surface (front-back side) of the document and the direction of its passage (right-left) in the machine for processing.

For an analysis of these documents use capacitive transducers, working on principialnuyu sensors, or infrared sensors type transmitter-receiver, operating in the wavelength range of about three micrometers (start of thermal infrared radiation).

Such sensors have a relatively simple structure, but allow you to determine the authenticity of only such documents that have watermarks with variable surface mass in the specific case of Bank tickets these detectors do not allow, in particular, to distinguish the dignity of these tickets.

In addition, in the case of known detectors operating in the infrared radiation used wavelengths substantially too large to detect color printed graphics.

In any case, processing of payments remains in all cases relatively complex. It was also suggested to encode documents using sequences of strokes, one of which absorbs, and the other reflects infrared radiation to determine the authenticity of documents. For the analysis of these documents use sensors type barcode readers, similar to those used in the field of labeling. Such sensors, however, is limited to reading t is inacce or in combination with each other, with the need in the latter case, the use of different types of sensors for consistent recognition of these signs.

Currently, there is a need to improve the known methods of determining the authenticity of documents to deal with increasingly complex technology falsification of these documents.

In the particular case with the banking service should be solved the problem of automatic recognition of its specified dignity.

Specialist in this field is hindered, however, great difficulties in trying to combine various protective signs, on the one hand, because the analysis is too complex and requires the use of various sensors, are often cumbersome and poorly compatible with each other, and, on the other hand, because decisions often depend on the treatment front surface and on the orientation of the document. In addition, the machines are used for sorting, counting and/or distribution will be improved in order to improve their performance.

This explains the fact that the experts were typically limited to the use of safety signs only one type, depending on the horse is closest to the present invention as in the task, and the achieved result is a method and apparatus for checking banknotes at the request of France N 2370327, according to which the analyzed document is read by multiple photosensor, and the resulting signal after processing is compared with the threshold value.

It is extremely advantageous to achieve the analysis of the document while reading the two are superimposed on each other marks protection, one of which represents, in particular, periodic grid of parallel lines watermark, and the second is the result of dividing the printed graphics on parallel stripes, and the stripes are parallel to the direction of passage of the encoded perpendicularly to the direction symmetrically with respect to the axis of the document parallel to the specified direction of the passage.

Parallel strips of the second sign of protection provided by the same width to facilitate analysis of the document: if the undulating topography of the watermark of the first grid is elongated in a common direction, generally not perpendicular and not parallel to the direction of passage of the document specified band width (e) of the backside of the directions), and when these two directions are almost parallel, the width of the strip (e) is almost equal to T/2 (oldline first wave mesh).

The basis of this of the invention is to provide a method and device to provide a unified analysis and document processing of the above type, with two superimposed one upon the other marks protection.

Thus, the subject of this invention is a method of analysis of such a document, as well as a device for implementing the method, which allows simple and reliable to solve the above problem.

The subject invention also is a method and device analysis that in the case of Bank tickets, at the same time to determine their authenticity and automatically recognize the specified dignity of the specified ticket.

And, finally, the subject of the invention is a method and device for analysis, which would be compatible with high-speed processing machines that are used for sorting, counting and/or separation.

The problem is solved in that the authentication method is cash or warranty document rectangular printed Gras is entrusted it to the first edge relative to the radiation detectors, perpendicular to the direction of movement of the document, the irradiation of the document by electromagnetic radiation of a predetermined wavelength range, at least in the area at the time of irradiation near the above-mentioned sensors, radiation, detection of radiation detectors response signals from the printed graphic image of the document and comparing the signals to predetermined threshold values, according to the invention, when scanning of the document in which the first sign of protection made in the form of a periodic grid of parallel lines watermarks, angled , 0<to the edge of the document, and superimposed on the second character of the protection executed in parallel to the first edge of the document stripes printed graphic image, in which the different reaction of at least one of the colors of this print graphics for different relative to the middle of the second edge of the document pairs of symmetrical stripes on electromagnetic radiation of a predetermined wavelength range, enabling encoding of the mentioned bands symmetrically relative to the middle of the second edge of the document, and stripes printed graphic image is as watermarks in the cross-section of the first sign of protection, perpendicular to the direction of its parallel lines have the radiation detectors at least once per mentioned strip printed graphics with step e summarize the signals of the radiation detectors of each pair of strips printed graphic image, symmetric about the middle of the second edge of the document, and then compare the total signal with said threshold values, which are chosen levels of the binary encoding of the mentioned pairs of symmetrical bands, and determine the binary codes of the bands on the results of this comparison, subtract the signals of the radiation detectors from those pairs of symmetrical stripes printed graphic image, a binary code which is defined as zero, and analyze differential signals to detect the signal corresponding to the mentioned undulating terrain watermarks first sign of protection.

Preferably the radiation detectors positioned on the middle line of the mentioned bands printed graphics,

The problem is solved also by the fact that the authentication method is cash or warranty document rectangular shape with printed graphic image and two EIT is Ino of radiation detectors, perpendicular to the direction of movement of the document, the irradiation of the document by electromagnetic radiation of a predetermined wavelength range at least in the area at the time of irradiation near the above-mentioned sensors, radiation, detection of radiation detectors response signals from the printed graphic image of the document and comparing the signals with predetermined threshold values, according to the invention, when scanning of the document in which the first sign of protection made in the form of a periodic grid of parallel lines watermark perpendicular to the first edge of the document, and superimposed on the second character of the protection executed in parallel to the first edge of the document stripes printed graphic image, in the reaction of at least one of the inks printed graphics for different relative to the middle of the second edge of the document pairs of symmetrical stripes on electromagnetic radiation of a predetermined wavelength range, which provides a binary encoding of the mentioned bands symmetrically relative to the middle of the second edge of the document, and stripes printed graphics have CA security perpendicular to the direction of its parallel lines have the radiation detectors at least once per mentioned strip printed graphics with step e, and group radiation detectors in two groups on either side of the middle of the second edge of the document and move the group of sensors relative to each other at a distance of T/2 in the direction of movement of the document pairs summed signals of the radiation detectors in both groups, the corresponding pair of strips printed graphic image, symmetric about the middle of the second edge of the document, and then compare the total signals from the mentioned thresholds, which selects the levels of the binary encoding of the mentioned pairs of symmetrical stripes, define the binary codes of the bands on the results of this comparison, pairwise subtracted signals of the radiation detectors in both groups, the respective pairs of symmetrical stripes printed graphic image, a binary code which is defined as a gunshot, and analyze differential signals to detect the signal corresponding to the mentioned undulating terrain watermarks first sign of protection.

The problem is solved also by the fact that in astraslim image and the two marks protection containing the first group of radiation detectors, the outputs of which are connected with the first inputs of the same name adders and block comparison, according to the invention, introduced the second group of radiation detectors, myCitadel, integrators, selectors, filter and block identification, and sensors both groups placed along the readout strips, located perpendicular to the direction of passage of the document, one for each of the mentioned parallel strip of the second sign of protection and at the same distance from each other, almost equal to the width of the parallel strips of the second digit protection of the analyzed document, the first inputs of vychitala connected to the same outputs of the radiation detectors of the first group, the outputs of the radiation detectors of the second group are connected with the second inputs of the same name adders and vychitala, the output of each adder is connected with the input of the same integrator, the output of which is connected with the corresponding input of the comparison, the output of each vicites through the corresponding selector is connected with the input of the corresponding filter, the output of which is connected to the corresponding input of the identification block.

The problem is solved in a device for testing podla trademarks protection, containing the first group of radiation detectors, the outputs of which are connected with the first inputs of the same name adders and block comparison, according to the invention, introduced the second group of radiation detectors, myCitadel, integrators, selectors, filters, and unit identification, and the radiation detectors in each group are arranged in a row at a given distance from each other equal essentially to the width of the mentioned bands printed graphic image, each group of radiation detectors located on the corresponding half of the readout melting the midpoint of the second edge of the analyzed document offset relative to another group in the distance, equal to half the wavelength mentioned undulating terrain watermarks first sign of protection, in the direction perpendicular to the direction of movement of the analyzed document; the first inputs of vychitala connected to the same outputs of the radiation detectors of the first group, the outputs of the radiation detectors of the second group are connected with the second inputs of the same name adders and vychitala, the output of each adder is connected with the input of the same integrator, the output of which is connected with the corresponding input of the comparison, the output of each victim the input of the identification block.

It is advisable that the specified communications device the output of each adder with the same input of the integrator and the output of each integrator to the corresponding input block comparisons were made through the respective switches, the control inputs of which are connected to the output of the shaper signal in passing through the edges of the analyzed document front sensor radiation.

It is also advisable to put the unit sound signals, the input of which is connected to the output of the Comparer, which was chosen to be the unit value comparison signals.

It is useful that the device was introduced block audible alarm, the entrance of which was connected to the output of the Comparer, in which the selected block comparison of the relationship of signal values.

Preferably, the output of the Comparators were provided by the decoders is configured to identify the document and definitions advantages Bank card.

It is useful to regard the output of each selector with a corresponding input of the corresponding filter were made through the appropriate additional adders.

It is advisable that between sensor is brasno, to read the strip were provided equidistant from each other round holes, one for each sensor.

Preferably, the reading strip were openings are provided in the form of slits, one for each sensor, and each of the holes was completed at a right angle to the direction of propagation of wave-like relief first sign of protection.

It is useful to read the strip has been provided by a cross-shaped holes, one for each sensor, and each of these holes was formed two holes, one of which would be made parallel to the direction of propagation of wave-like relief first sign of protection, and the second perpendicular.

It is also useful to the specified device at least one sensor relating to one lane second mark protection is a multi-element.

It is also advisable to multielement sensor radiation was performed on two identical adjacent sensing elements located on either side of the middle axis of each strip of the second sign document security.

It is also advisable to multielement sensor was the implementation of the nutrient and perpendicular to the direction of passage of the document.

Preferably, in the drive you specified sensitive elements of single and multi-element radiation detectors were selected from a group comprising photodiodes, photosensitive, photoconductive, each of these sensors has been associated with optical filters to match the desired wavelength.

It is preferable that the sensors were placed on a strap with an opportunity to obtain the same gain and the same initial installation to ensure a balance of different channels.

In Fig. 1 shows a rectangular document to be analyzed using the method and device according to the invention, the first and second signs the document security is depicted by the dotted line, and signs superimposed one upon the other; Fig. 2 is a view in plan, illustrating the first sign of protection specified document, made in the form of periodic mesh watermarking, arranged in the form of a square, which can be seen in the lumen, with alternating light and dark areas corresponding to changes undulating terrain watermarks; Fig. 3 in terms of facial relief fitting matrix that allows you to stamp the forming fabric during the production of this document, to receive the we the surface of the matrix produces the desired changes in the surface topography of the material document in the zone, in which are formed watermarks, with the edges of the matrix additionally perform beveled to soften the contrasts at the level of the edges of this zone; Fig. 4 8 sections, respectively, IV-IV, V-V, VI-VI, VII-VII and VIII-VIII in Fig. 3 to more clearly illustrate the structure of the relief surface of the matrix, and, in particular, its beveled edges, relative to the Central plane of the specified surface, and Fig.9-13 curves illustrating changes undulating terrain watermark obtained by using a specified matrix, and these curves correspond to the sections in Fig. 4-8 (curves changes undulating terrain watermarks in the paper do represent a direct conversion results corresponding curves of changes of the surface relief marking matrix); Fig. 14 and 15 illustrate the document depicted in Fig. 1, with two different types of encoding of parallel strips of the second digit protection when parsing the specified document in the infra-red rays (graphic image printed using two colors, one of which reflects infrared light, and the other does not), in this case with eight parallel lanes, coded to the depicted matrix, with a square contour with beveled edges and with a specific clock skew relative to the axis of the square (which preferably coincide with the two axes of symmetry of the rectangular document); Fig. 17 view on an enlarged scale, showing the area of the document where both mark protection superimposed on each other (in this case, there are six parallel strips of the second sign of protection that cross the area with watermarks from the first periodic mesh), both superimposed on each mark protection is designed to provide analysis of a single document element, at the level of which is specified document; Fig. 18 complements previous view depicting the bar of sensors according to the invention, allowing to analyze the above document, with one sensor on each parallel strip of the second sign of protection, and the specified bundle is placed perpendicular to the direction of passage of the document of Fig.19 variant of the invention, according to which the direction of propagation (DS) undulating terrain watermark grid parallel to the direction of travel document (DD), the upper limit of the detectors according to the invention in this case is made otherwise with dummy perform sensor strips according to Fig. 13, respectively, with apertures in the form of inclined slits, cross-hole, multiple sensors containing two adjacent single sensor and multiple sensor containing four single sensor located by the square of Fig. 21 is a diagram of the device for analysis according to the invention, connected to a strap of the sensors shown in Fig. 18 and showing the means used for processing signals from various sensors, and check the encoding of the second mark protection and confirm the authenticity of the analyzed document, when the second sign of protection meets the requirements, and with the other hand to analyze the first grid and confirm the authenticity of the document to be parsed when the first grid meets the requirements.

In Fig. 1 shows the document 1, in this case rectangular, large edge of which is indicated by the numeral 2, and the small figure 3.

This document has on its surface (front or back) printed graphic image G illustrate in this case the glider. Graphics, of course, may be provided to the other surface of the document is defined in this case by the dotted line.

The first sign of protection 100 presents in the form of a periodic grid with watermarks bounded by the closed contour C, which is inside edges 2.3 document 1. The first sign of protection, therefore, is perceived at a gap in a sequence of light and dark bands 101, 102. The appearance of the strips 101, 102 is the result of changes undulating terrain watermarks in this area.

The second character protection 200 is also made in the form of a grid and reflects printed graphic image G in the form of encoded parallel strips 201, 202.

Strips 201, 202 are disposed symmetrically with respect to the axis of symmetry of the document 1, specifically to the axis H X parallel to a large edge 2 of this document. Thus, there is an even number of strips located on both sides of the axis X' of X. the Other axis of the document indicated In' Fig. 1.

The direction of the strips 201, 202 identified by the subscript DD and you can see that this direction coincides with the direction of passage of the analyzed document.

Since there is no need to strip 201, 202 referred to throughout the document 1 in Fig. 1 there are thus two zones that are not affected by coding ZL In concrete, encoded using binary (On or 1), symmetrically relative to the symmetry axis H X document 1. Coding strips 201, 202 implemented in such a manner along the axis U of U.

In this case, it is beneficial to have a graphic image G document was printed using two colors of the same hue, one of which reacts and the other does not respond to a predetermined external action, in order to provide the specified graphic image in the form of parallel strips,

Although you can use different types of excitation (magnetic pigments, microwaves, UV radiation, radioactive source), it is advantageous to choose infrared radiation. The wavelength of infrared radiation in this case is chosen in such a way as to get the best result from the pair formed by the two marks protection 100, 200, to the corresponding characteristic in the analysis of the document coincides at least in part.

It is preferable to select the wavelength, the smaller one micrometer, and in particular in the range from 0.8 to 1 μm (hence, we are talking about the lower region of infrared radiation, which is far removed from thermal infrared region, sometimes isplace, when a graphic image of the document is printed using two colors, one of which reflects infrared light and the other does not reflect the analysis of the specified document in the infrared radiation corresponds to the images, like illustrated in Fig. 14 and 15.

In Fig. 9 can consistently see the band 202 coded unit (absorbs infrared light, therefore, allows you to see considered part of the graphic image, as well as consider the call of the first grid watermark 100), lane 201, coded zero (reflects infrared light, therefore, masks the graphic image, allowing you to see only the area of the first grid with watermarks 100), then the two encoded unit of the strip 202. The symmetry of the encoding with respect to the axis H X in this case suggests the presence of two consequent strips 202, one strip 201 and, finally, one strip 202.

Binary encoding is shown in Fig. 14, therefore, will be expressed by the number 10111101.

In Fig. 15 shows another variant of the encoding with the same number of parallel strips encoding in this case will be expressed by the number 01100110 (symmetrize eight parallel lanes, resulting in in fact have 24then there are 16 different codes.

In the more General case, when 2n bands encoded On or 1 will be 2ndifferent codes.

Encoding with the breakdown of the printed graphic image can be carried out with respect to the front surface to the back surface, or both. In the latter case, the reading of the document will be facilitated if they use the same encoding on the obverse and on the reverse side, and the corresponding bands in the result that are directly stacked on top of one another; this can be advantageous insofar as it allows us to better resist the effects of aging.

In practice, we must choose the number of bands, at least equal to the number of recognized documents (for example, in the case of Bank notes, when using the second character for the automatic recognition of the specified dignity analyzed ticket), while the number of bands remain, furthermore, limited technological capabilities of the analysis tools operating on very thin strips.

In addition, a graphical image may be printed on the face of strongermanu in the form of parallel strips (for example, infrared radiation).

This feature can be used for Bank notes offset printing, in particular gravure printing, making it easy to match colors, thanks to the engraved rollers (not a problem "register" with paints as used in this case, the same printed form).

Fig. 2 allows us to better distinguish the area with watermarks corresponding to the first sign of protection 100 as it appears on the light.

Mesh with watermarks 100, therefore, is periodic (uniform alternation of light and dark areas), with period T. in Addition, as will be explained in detail below, the specified character grid protection contains watermarks with undulating terrain is preferably sinusoidal.

In Fig. 2 also shows that the undulating terrain watermark grid 100 is elongated in the General direction of the DC, which is virtually not perpendicular to the direction DD of the bands split second grid 200.

In this case the specified direction DC and DD form an angle b which in this case is 45oWith that allows you to read the document in two perpendicular directions (parallel on the parallel minor edge). Alternatively, you can choose other values for angle b between both these directions, however with the loss of certain benefits. In Fig. 19 shows the case when the directions of the DC and DD almost parallel, and in this case refers to a special location detection sensors, as will be described hereinafter with reference to this figure.

Should such be noted that in the embodiment shown in Fig. 2, there is a certain clock skew for "waves" of the first grid 100 with respect to the center of the square, which in this case is located at the intersection of the axes H X and U In the document. The choice of such clock skew, in which the edge strip is applied to the center 0 of the square will depend on the applied method of analysis and related processing tools. This allows the sensor, located at a distance from the axis's X or U Have to constantly take the same signal ( with a deviation in p or 2 )

The device shown in Fig. 1, remains in any case the most appropriate, because the location of both superimposed one upon the other marks protection, namely periodic grid with watermarks 100 and coded grid 200 of parallel strips breakdown printed horasanli front side of the document, from its orientation and the direction of its passage).

In Fig. 3 depicts a front relief surface of the matrix 110 that allows you to stamp the forming fabric in the manufacture of the document, with the aim of obtaining a periodic grid in the form of a watermark, similar to the grid in Fig. 2. The specified face with undulating terrain, in this case a sine wave form, the wave front which extends in the General direction of DS, an angled at 45o.

Thus, the relief surface of the matrix 110 is a sequence of recesses 111 and protrusions 112 (the best of eminent PA cross section of Fig. 4) that allow you to perform alternating light 102 101 and dark areas on the grid of the watermark 100 of the document.

Curve IV in Fig. 9. showing changes undulating topography (surface mass) watermark document (according to the direction DS), in this case, corresponds to the curve of elevation changes of the matrix 110, shown in Fig, 4.

It is important to note, as shown in Fig. 9 changes in the amplitude of the sinusoidal wave of relief watermark mark protection is made around the mid-plane of the document, marked RM (th is>/P>Period T preferably should choose large relative to the size of the document, for example, about 10 mm for the Bank of the ticket so that the sign of protection 100 was the least noticeable. The same applies to the side of the square, which should be, for example, about 60 mm

The sections of figures 5-8 allow, in addition, it is better to distinguish special bevel edge 113 of the matrix 110. This bevel in practice made or downwards (edges chamfered 113,) or up (edges chamfered 113") with respect to the Central plane of the relief surface of the die 110.

This is expressed bevel edges for areas with watermarks, as it follows from the curves V-VIII, illustrating the corresponding changes in the surface mass, and is on both sides of the mean plane PM of the document. So get the square in the form of a watermark, the edges of which are made in the form of "lace", which eliminates the sharp contrast transitions around with watermarks and even more masks a sign of protection.

In Fig. 16 depicts (on clearance) periodic grid with watermarks 100, obtained from a forming fabric, pre-stamped the specified matrix is reventive all what I said earlier in relation to Fig. 2.

In Fig. 17 shows in larger scale the area of the document 1, in which both mark protection 100 and 200 superimposed on each other.

Alternating dark and light zones in the form of strips 101 and 102 periodic grid with watermarks 100 are of the same width equal to the half period T/2 sine wave of a specified grid.

The slope of these bands 101 and 102 indicated by the angle b between the directions of DC and DD (the angle b is 45oC).

Fig. 17 also allows you to distinguish the coded parallel strips 201, 202 second digit protection 200 corresponding to the breakdown of the printed graphic image.

Coded strips have the same width e, which is defined in most cases depending on the parameters of the grid with watermarks, more precisely from the period T and the angle b.

In Fig. 17 shows a right-angled triangle ABC, corresponding to the most favourable location for reading the document, the hypotenuse AB which corresponds to the width e of each of the strips 201 or 202, and one leg of which corresponds to the half-period T/2, whence the following relationship:

< / BR>
In the specific case = 45,o, i.e.

This ratio, however, can only be used within certain limits, that is, while the angle exceeds the reference angle bocorresponding to the width of the strip e0^ reaching half the width (1) document, this is an extreme case and in fact would be consistent with the presence of two bands that are symmetric with respect to the axis H X,

For example, in the case of Bank ticket, a width of about 80 mm, you could have a reference angleoorder 10o.

When the angle becomes less than the reference angle bothe width e of the strips 201, 202 breakdown of the printed graphic image basically is selected depending on the desired encoding.

Special case of zero angle is illustrated in Fig. 14: strips 101, 102 of the first grid 100 in this case is orthogonal to the strips 201, 202 second grid 200, and in this case to choose the width of e, which in the preferred embodiment, is equal to the half period T/2 (image in this case corresponded to the perfect square mesh formed by six orthogonal strips).

In practice, you must first choose the number of bands division depending on the number to be encoded documents and technologists is hydrated choice also depends on the accuracy of the reading device, used for analysis of the document. Then should be possible angles on the assumption that the choice of angle at 45omeans the maximum benefits, as explained above.

Thus, a document containing two stacked on top of each mark protection 100, 200 of the above type, it is of interest to the extent that the imposition of these two characters makes the individual reading these signs.

Thus it is possible largely to justify the efficiency of determining the authenticity.

When the document is a Bank card, the first sign of protection 100 and the second character protection 200 are used to determine the authenticity of the ticket, and the second character protection 200 is used for the automatic recognition of the specified advantages of the ticket.

Variant of the method of analysis and associated device is described below with reference to Fig. 18-21.

In fact, Fig. 18 illustrates the area of the document 1, in which both safety signs 100 and 200 superimposed on each other (as for Fig. 17), with the additional presence of lath read 301, equipped with means of detection.

Detection is made in the form of sensors is to experience). These funds are placed according to the main direction D perpendicular to the direction of DD, which is a direction of passage of the document in the reader (direction DD is the direction coded strips 201, 202), and with an intermediate distance d, equal to the width e of the specified coded bands 201 and 202.

In addition, it is advisable that the detection means 300 were located on the middle axis (a) related bands 201 or 202 of the second grid, thus there is no danger of distortion analysis in the case of shift of the document relative to the sensor readout strips (which would have led to the loss of signal due to the increased interference).

Can be used single plank of the reading sensors which contain transmitting and receiving means, and which passes the document being parsed. Alternatively, apply two overlaid placket read, one of which contains the transmitting means and the second receiving means, and between which passes the document being parsed. This case is illustrated in Fig. 13, which schematically shows either a single strap or one superimposed on each of the strips (another while Ioannou strip 201 or 202, reads a minimum surface weight (sensor is located in the center of the inclined strip 102 on the axis specified band), the sensor 300 that is associated with a symmetric band 201 or 202 (conjugated band), reads the maximum surface mass (sensor is located in the center of the inclined strip 101, the axis specified band), this follows from the fact that the grid structure with watermarks with sinusoidal wavy relief is chosen such that the "wave" on both sides of the axis H X document located at the same distance from the said axis, were in antiphase.

More generally, at any time find the relationship between the response signal encoded strip 201 and 202 and the response signal encoded symmetric bandwidth (coupled band), when the document passes under the read bar 301.

Below is the sequence of operations performed during the implementation of the first method according to the invention.

Have the radiation detectors 300, at least one strip 201, 202 second digit protection 200, and these funds are placed along the main direction D perpendicular to the direction of passage of DD with an intermediate distance d equal to the width of the printed graphic image, symmetric about the middle of the second edge of the document, and then compare the total signal with said threshold values, which are chosen levels of the binary encoding of the mentioned pairs of symmetrical bands, and determine the binary codes of the bands on the results of this comparison, subtract the signals of the radiation detectors from those pairs of symmetrical stripes printed graphic image, a binary code which is defined as zero, and analyze differential signals to detect the signal corresponding to the mentioned undulating terrain watermarks first sign of protection, 100,

According to this method, summarizing the response signal from each encoded strip and a feedback signal related bands, simultaneously reach the correct signal from the first grid with watermarks and improve the response signal to the encoding stripes, for example, a signal in response to infrared radiation, for this purpose, use decoding using synchronous integration for each pair of coded bands (one pair formed encoded strip and symmetric her strip or related band) followed by comparison of the obtained results with theoretical is 0), in particular, the levels of absorption of infrared radiation, it is possible to analyze the first grid with watermarks the easier it is, the higher the signal-to-noise ratio for a given grid (actually there is a signal, the amplitude of which doubled owing to the opposition of phase grid with watermarks between the encoded adjacent strips of the same channel).

In the case of Fig. 19, for which the direction of DC and DD almost parallel (both superimposed one upon the other sign of protection in this case form a raster grid zone with watermarks), you want to change the read bar 301.

Instead of a single row of sensors 300, perpendicular to the direction of passage of DD, strap read 301 includes two parallel rows of sensors 300', 300" placed perpendicularly to the direction of passage of DD with one row of half placket, these two rows of sensors (each of which contains three sensor 300' or 300") in this case, the offset relative to each other by a predetermined distance d1that is selected is almost equal to the half wave length of T/2 of the first grid, so that the signals from the respective sensors were in antiphase.

Below is the sequence of operations for the implementation of the second method according to this invention:

have the radiation detectors 300', 300" in the amount of not less than one per band 201, 202 second "grid" printed graphical image 200 with step e, and these sensors are placed in the main direction D perpendicular to the direction of passage of the document, DD, and grouped on the middle axis and adjacent strips 201, 202, in two groups on either side of the axis H X document and on both sides from the middle of the second edge of the document and move the group of sensors relative to each other by the distance d, equal to half the wavelength of the T/2 of the first mesh in the direction of movement of the document pairs summed signals of the radiation detectors in both groups, the corresponding pair of strips printed graphic image, symmetric about the middle of the second edge of the document, and then compare the total signals from the mentioned thresholds, which selects the levels of the binary encoding of the mentioned pairs of symmetrical bands, and determine the binary codes of the bands on Aram symmetric bands printed graphic image, binary code which is defined as zero, and analyze differential signals to detect the signal corresponding to the mentioned undulating terrain watermarks first sign of protection.

In this case, actually used the same process of analysis with the addition of response signals paired encoded strips and minus values of the levels of vapor absorption bands for one or more not used channel coding (band, coded zero).

This review process allows dual analysis of both safety signs, superimposed one upon the other, with a single strap sensors, despite the fact that overlay each other these two characters would result in the deterioration of the individual read each of them.

This process of analysis will be further disclosed below with reference to Fig. 21, which schematically illustrates a single device for analyzing signals from various sensors, in order, on the one hand, to check the encoding of the second sign of protection and to determine the authenticity of the analyzed document, when read mark protection requirements, and, on the other hand, proanalizirovavshie requirements.

Naturally, there are numerous ways to perform the readout strips, as is clear from the following examples.

Reading Planck 301 may be located at the same distance almost round holes 302 connected to each sensor 300, as shown in Fig. 13.

Alternatively, it is possible to provide openings in the form of slits 303 (Fig. 20a) in this case, each slot is inclined so as to be almost perpendicular to the wave front wave of relief the first "grid", (each slit is thus inclined at the same angle b with respect to the direction of passage of the DD document).

According to another variant, provided crosswise holes 304 (Fig. 20b), both branches of which are respectively parallel and perpendicular to the wave front of the first grid. This allows to further increase the surface currents for the first grid and get a higher average value for the measured signal, as in this case, the process of integration of sampling.

According to another variant, shown in Fig. 20, and 20 and 20, d is at least one of the sensors is a multi-element (Vovan two adjacent identical sensors 3001located on either side of the middle axis (a) each encoded strip 201 or 202. The response signal from the sensor 300 in this case is the sum of the response signals of both sensors 3001. In Fig. 20 d each multielement sensor 300 is formed of four identical sensors 3002arranged in a square, with specified square centered on the middle axis (a) each encoded strip 201 or 202, and the edges of the square are parallel and perpendicular to the direction of passage of the DD.

It is obvious that the variants according to Fig. 20(a d) is applicable for the case with strap with two offset rows of inclined cracks or crosswise slits, or two offset rows of multiple sensors.

In General, the sensors 300 or 300', 300" reading of the strap 301 must be designed to ensure equal amplification of corresponding signals and the same as the original installation, to ensure alignment of the various channels.

As single or multiple sensors can be used photodiodes, a photosensitive or photoconductive, and each sensor is preferably connected with optical filters for full adaptation to the required doslidnyj sensor readout strips, with reference to Fig. 21.

In Fig. 21 shows the reader strap 301, in this case with six sensors 300 for a document encoded with six stripes parallel to the direction of passage, and with three sensors relieve signals, denoted by SA, SB, SC, and with three other sensors remove the signals SA', SB', SC', corresponding paired coded bands.

The unit of analysis contains tools 400 processing of the signals taken from the sensors 300.

These tools contain two processing units, each of which is associated with the "grid" 100 or 200 of the document.

The first block checks the encoding of the second sign document security, held at the level of the strap sensors, and determining the authenticity of the analyzed document when the specified character matches the requirements.

The first unit includes means for adding 401, associated with each pair of coded bands. The received signals are thus signals SA+SA', SB+SB', SC+SC' (these amounts consist of signal and the same signal shifted in phase by p ), pre-amplified by using an intermediate amplifier 413. The signals are, then, integrirana receive signals 1A, 1B, 1C, associated with each pair of coded bands. These signals served on the comparator 403 to compare the obtained results with theoretical values encoding the second digit protection of the analyzed document.

In the preferred embodiment, provide a means of switch 408, 409 upstream and downstream from the means of integration, and the use of switch (shown schematically as switches respectively controlled by the passage of the front edge and the rear edge of the document before a fixed element such as a photodiode (at least one of the sensors trims can read as an option to supply the additional function of controlling the passing of the ticket, which prevents the need for a separate photodiode), the control means 408, 409 in this case is shown diagrammatically in the form of a Central control unit 415.

Thanks a stationary element detection (built-in or stand-alone photodiode) is provided by integrating along the length of the document, which is especially advantageous in the case of Bank notes of the same width and different lengths.

Comparator 403 allows primarily providesus depending on the paint, the tone of the paper and other parameters related to the current document.

Comparator 403 is equipped with sound contrasting alarm 410, driven, when the difference between the results is outside the specified range. In this case, the difference of IiIjcompared with the boundaries of the range and sound alarm 410 is actuated, if no ink that responds to a known excitation (e.g., infrared radiation), or if the paint is not properly respond to the stimulation.

Alternatively, contrasting sound alarm 410 is activated when the ratio between the results is outside a predetermined range. Comparator 403 in this case contain logarithmic amplifiers ratios, and the aperture comparator (positive or negative). In this case, all values are compared with the limits of the range. This option is preferable from the point of view of achieving symmetry results when the response signals are inverted, obtaining high sensitivity in the range of small deviations of the contrast and the possibility of obtaining the maximum response of the black and the minimum is avania 403, in order to identify the document and, in particular, when the document is a Bank card, in order to recognize the specified advantages of this ticket. These funds decoding 411 are in memory inequality Ii<Ifor each document, allowing you to easily identify the document being parsed.

The second block contains primarily a means of differentiation 404, associated with each pair of coded bands. The received signals thus correspond to the signals a', B- 'and', preferably, pre-amplified using the introduced amplifier 413. Each difference corresponds, because of the opposite phase undulating terrain with watermarks, a double value of the original signal, released from the interference caused by the pollution of the document and transparency properties of paper.

Provide selector means 405, downstream from each of the differentiating means 404, to save only the response signals related to bands that do not contain coding (coded zero). These means are shown diagrammatically in the form of switches that are managed from Central unit 415, and the switch, tie the received signals on an additional means of adding 412 (because the signals are in phase, in fact receive n signal where n= 1, 2, or 3).

Then we introduce the tools filter 406 that allows you to filter the signals at the fundamental frequency of the first grid, allowing you to isolate the useful signal. The latter serves on the tool 407 identification and recognition of authenticity, to analyze the first grid of the document, and recognize the authenticity of the document, when the net with watermarks matches the specified requirements, or otherwise, to include a summed audio signal 414. Means 407 may include aperture comparator and/or the means threshold nonlinear distortion, or a means of detecting the number of periods.

Obviously, you can regroup into a single functional block means to enhance 413, 401 addition and integration 402 of the first block, and means to enhance 413 and differentiation 404 of the second block.

The described method and device for analysis greatly facilitate the identification of authenticity.

In the case of forgery of a document may not be complied with encoding in parallel bands (the second sign of protection), but in this case, the decoding circuit does not recognize the authenticity of the document, and, in addition, autom is entrusted to the infrared radiation. In the case of forgery undulating terrain watermark (first grid) and if the amplitude is too large, the detection is easily performed; if the phase is not observed, the signal from the difference channel in this case will be weakened if the profile is not sinusoidal, the measurement of nonlinear distortion allows the detection.

The invention is not limited to the above variants of implementation and may include other options, using, using equivalent means, above the main distinctive features.

1. The authentication method is cash or warranty document rectangular shape with printed graphic image and the two marks protection, which includes moving the document to be parsed parallel to its first edge relative to the radiation detectors arranged perpendicular to the direction of movement of the document, the irradiation of the document by electromagnetic radiation of a predetermined wavelength range at least in the area at the time of irradiation near the above-mentioned sensors, radiation, detection of radiation detectors response signals from the printed graphic image of the document and the comparison signal is the first sign of protection made in the form of a periodic grid of parallel lines, watermarks, angled , (0< < 90) to the edge of the document, and superimposed on the second character of the protection executed in parallel to the first edge of the document stripes printed graphic image, in which the different reaction of at least one of the colors of this print graphics for different relative to the middle of the second edge of the document pairs of symmetrical stripes on electromagnetic radiation of a predetermined wavelength range, enabling encoding of the mentioned bands symmetrically relative to the middle of the second edge of the document, and stripes printed graphic images are the same width , defined by the expression

< / BR>
where T is the wavelength of the wavy relief watermark in the cross-section of the first sign of protection that is perpendicular to the direction of parallel lines,

have the radiation detectors at least once per mentioned strip printed graphics with step e, summarize the signals of the radiation detectors of each pair of strips printed graphic image, symmetric about the middle of the second edge of the document, and then compare the total signals mentioned the x bands, define the binary codes of the bands on the results of this comparison, subtract the signals of the radiation detectors from those pairs of symmetrical stripes printed graphic image, a binary code which is defined as zero, and analyze differential signals to detect the signal corresponding to the mentioned undulating terrain watermarks first sign of protection.

2. The method according to p. 1, wherein the radiation detectors are placed on the middle line of the mentioned bands printed graphic image.

3. The authentication method is cash or warranty document rectangular shape with printed graphic image and the two marks protection, which includes moving the document to be parsed parallel to its first edge relative to the radiation detectors arranged perpendicular to the direction of movement of the document, the irradiation of the document by electromagnetic radiation of a predetermined wavelength range at least in the area at the time of irradiation near the above-mentioned sensors, radiation, detection of radiation detectors response signals from the printed graphic image of the document and comparing the signals with a predetermined periodic grid of parallel lines, watermarks, perpendicular to the first edge of the document, and superimposed on the second character of the protection executed in parallel to the first edge of the document stripes printed graphic image, in which the different reaction of at least one of the colors of this print graphics for different relative to the middle of the second edge of the document pairs of symmetrical stripes on electromagnetic radiation of a predetermined wavelength range, enabling encoding of the mentioned bands symmetrically relative to the middle of the second edge of the document, and stripes printed graphic images have the same width e 2 0= T/2, where T is the wavelength of the wavy relief watermark in the cross-section of the first sign of protection that is perpendicular to the direction of its parallel lines have the radiation detectors at least once per mentioned strip printed graphics with step e, and group radiation detectors in two groups on either side of the middle of the second edge of the document and move the group of sensors relative to each other at a distance of T/2 in the direction of movement of the document pairs summed signals of the radiation detectors of both groups, sootvetstvenno, then compare the total signal with said threshold values, which are chosen levels of the binary encoding of the mentioned pairs of symmetrical bands, and determine the binary codes of the bands on the results of this comparison, pairwise subtraction of the signal of the radiation detectors in both groups, the respective pairs of symmetrical stripes printed graphic image, a binary code which is defined as zero, and analiziruyut differential signals to detect the signal corresponding to the mentioned undulating terrain watermarks first sign of protection.

4. The device for authentication of cash or warranty document rectangular shape with printed graphic image and two marks of protection, containing the first group of radiation detectors, the outputs of which are connected with the first inputs of the same name adders and block comparison, characterized in that the device entered the second group of radiation detectors, myCitadel, integrators, selectors, filters, and unit identification, and the sensors of both groups placed along the readout strips, located perpendicular to the direction of passage of the document, one for each of the mentioned parallel the Los printed graphic image, the first inputs of vychitala connected to the same outputs of the radiation detectors of the first group, the outputs of the radiation detectors of the second group connected to the second inputs of the same name adders and vychitala, the output of each adder is connected with the same input of the integrator, the output of which is connected with the corresponding input of the comparison, the output of each vicites through the corresponding selector is connected with the input of the corresponding filter, the output of which is connected with the respective input unit identification.

5. The device for authentication of cash or warranty document rectangular shape with printed graphic image and two marks of protection, containing the first group of radiation detectors, the outputs of which are connected with the first inputs of the same name adders and block comparison, characterized in that the device entered the second group of radiation detectors, myCitadel, integrators, selectors, filters, and unit identification, and the radiation detectors in each group are arranged in a row at a given distance from each other equal essentially to the width of the mentioned bands printed graphic image, each group of radiation detectors located on sootvetstvuyuschengo another group in the distance, equal to half the wavelength mentioned undulating terrain watermarks first sign of protection, in the direction perpendicular to the direction of movement of the analyzed document, the first inputs of vychitala connected to the same outputs of the radiation detectors of the first group, the outputs of the radiation detectors of the second group connected to the second inputs of the same name adders and vychitala, the output of each adder is connected with the same input of the integrator, the output of which is connected with the corresponding input of the comparison, the output of each vicites through the corresponding selector is connected with the input of the corresponding filter, the output of which is connected with the respective input unit identification.

6. The device under item 4 or 5, characterized in that regard, the output of each adder with the same input of the integrator and the output of each integrator to the corresponding input block comparison is made through the respective switches, the control inputs of which are connected to the output of the shaper signal in passing through the edges of the analyzed document front sensor radiation.

7. The device according to p. 6, characterized in that the input unit sound signals, the input of which is connected to o the p. 6, characterized in that the input unit sound signals, the input of which is connected to the output of the Comparer, in which the selected block comparison of the relationship of signal values.

9. Device according to any one of paragraphs. 4 to 8, characterized in that at the output of the Comparators is provided by the decoders is configured to identify the document and determine the advantages Bank card.

10. The device according to PP.4 and 5, characterized in that regard, the output of each selector with a corresponding input of the corresponding filter is made through the appropriate additional adders.

11. Device according to any one of paragraphs.4 to 10, characterized in that between the sensors and the adders or relevant vycitalem provided by the amplifiers.

12. Device according to any one of paragraphs.4 to 11, characterized in that the readout strip is provided equidistant from each other round holes, one for each sensor.

13. Device according to any one of paragraphs.4 to 11, characterized in that the reading placket openings are provided in the form of slits, one for each sensor, and each of the holes made at right angles to the direction of propagation of wave-like relief first is trany cross-shaped holes, one for each sensor, and each of these holes is formed by two holes, one of which is arranged parallel to the direction of propagation of wave-like relief first sign of protection, and the second perpendicular.

15. Device according to any one of paragraphs.4 to 14, characterized in that the at least one sensor relating to one lane second mark protection is a multi-element.

16. The device according to p. 15, wherein the multi-element sensor radiation performed on two identical adjacent sensing elements located on either side of the middle axis of each strip of the second sign document security.

17. The device according to p. 15, wherein the multi-element sensor radiation performed on two identical sensing elements, forming a square, with sides of the square are parallel and perpendicular to the direction of passage of the document.

18. Device according to any one of paragraphs.4 to 17, characterized in that the sensitive elements of one - and multi-element sensors radiation selected from the group comprising photodiodes, photointerrupter, with each of these sensors associated with optical filters to match trebuemom the ability to obtain the same gain and the same initial installation to ensure a balance of different channels.

 

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The invention relates to banking technique
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The invention relates to the issue of securities for various purposes, banking, primarily for the protection of securities and documents from possible counterfeits, as well as to give protected securities and documents of high consumer properties

The invention relates to advertising, printing, remedies securities, manufacturing labels, nameplates, stickers and labels

FIELD: paper improved through usage of watermarks and/or embossed members for strengthening of paper sheets and documents manufactured from such a paper.

SUBSTANCE: paper sheet has at least three corners and three sides connected in said corners, wherein angular strengthening watermarks are formed in each of said corners. Alternatively or in addition to it, angular strengthening embossing members are formed in each of said corners. Also, according to another version, paper sheet has at least three corners and three sides connected in said corners, wherein edge strengthening watermarks are formed in the vicinity of mid portion of each of said edges or said watermarks cover mid portion of each of said edges.

EFFECT: increased strengthening of paper sheets and improved protection of documents manufactured from said paper sheets.

21 cl, 8 dwg

FIELD: production of paper for banknotes, securities, identity certificates or other protected printed products.

SUBSTANCE: grid has filigree members fixed on grid and designed for local reducing of paper water loss for producing of filigree watermark on paper. Filigree members are made in the form of various figures, patterns, or text produced by shaped cutting from sheet material. There are through apertures and/or slots provided in body of filigree member, said apertures having cross size below 500 micron and being designed for creating zones with higher water loss. Method involves forming paper web on grid of round grid-type papermaking machine; dehydrating during pressing of paper web; forming paper on grid in order to produce filigree watermark having additional picture provided on the background of filigree watermark and having higher optical density as compared to optical density of filigree watermark.

EFFECT: increased degree of protecting paper from forgery.

4 cl, 3 dwg

FIELD: manufacture of paper, in particular, counterfeit-proof paper, and valuable document manufactured from such paper, manufacture method, cloth of papermaking machine and apparatus for manufacturing the same.

SUBSTANCE: counterfeit-proof paper has through opening made during papermaking process and free from definitely delimited edge on its edge portion. Paper may consist of two layers, first layer being provided with window formed during papermaking process. Paper comprises through opening having sizes less than window sizes. Method for manufacturing cloth of papermaking machine involves furnishing cloth with flexible or movable continuity disturbing member which prevents accumulation of pulp on cloth portion occupied by said member; forming paper web furnished with through opening; withdrawing paper web from cloth so that continuity disturbing member is deformed or sunk under cloth.

EFFECT: increased extent of protecting paper from counterfeit.

37 cl, 12 dwg, 1 tbl

FIELD: physics.

SUBSTANCE: method of marking articles illuminated with a water mark comprises steps on which an ordered regular array of particles is deposited on the article in a configuration which marks the article, where radiation with detected wavelength is diffracted on the said array. An article with a water mark made using the said method is also proposed. The method of making an article which shows an image comprises steps on which an ordered regular array of particles is deposited in an image configuration, the said particle array is covered by a matrix composition and the coating of the particle array is fixed such that the image is visible when radiation is diffracted on the said array.

EFFECT: invention can protect documents, verify the source of product, identify a product or can be used for decorative purposes.

28 cl, 6 dwg

FIELD: textile, paper.

SUBSTANCE: invention relates to pulp and paper industry, in particular to production of paper, with water sign, to make banknotes and secure documents that require higher counterfeit protection. Counterfeit-proof paper includes water signs with multitone effect, having light and dark elements, visually perceived in passing light in the form of raster image, besides, light elements are characterised by smaller weight per unit of paper area, compared to dark elements. At the same time total area of light elements of water sign, optical density of which is less than optical density of paper, makes at least 1% of total area of paper, and depth of light elements of water sign does not exceed 70% of paper thickness. Mesh to manufacture counterfeit-proof paper comprises masks to form water sign, which are solid elements arranged between perforated sections of mesh, besides, at least on one mask there are microholes with diametre of not more than 0.25 mm, and total area of microholes makes not more than 15% of overall area of mask.

EFFECT: invention increases strength of paper with preservation of good graded conveying of image tones.

4 cl, 3 dwg

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