EP1287496B1 - Appareil de verification de documents - Google Patents

Appareil de verification de documents Download PDF

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Publication number
EP1287496B1
EP1287496B1 EP01940526A EP01940526A EP1287496B1 EP 1287496 B1 EP1287496 B1 EP 1287496B1 EP 01940526 A EP01940526 A EP 01940526A EP 01940526 A EP01940526 A EP 01940526A EP 1287496 B1 EP1287496 B1 EP 1287496B1
Authority
EP
European Patent Office
Prior art keywords
evaluation
slide
group
document
documents according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01940526A
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German (de)
English (en)
Other versions
EP1287496A1 (fr
Inventor
Robert Massen
Thomas Franz
Thomas Leitner
Jörg EBERHARDT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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Publication date
Application filed by Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Publication of EP1287496A1 publication Critical patent/EP1287496A1/fr
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Anticipated expiration legal-status Critical
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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/121—Apparatus characterised by sensor details

Definitions

  • the invention relates to a document tester according to the preamble of claim 1.
  • document testers have become known in multiple embodiments. They are used for automatic verification of the authenticity of documents, in particular passport, ID cards, driver's licenses, identity cards, residence permits (visas) and the like. Identifying more, which hereunder z. B. also fall tickets.
  • the invention thus relates to the automatic verification (verification) of documents of any kind, which are provided with certain authenticity features.
  • This is in a conventional manner to one or more matrix cameras that record the illuminated ID card or document image and with a Evaluate downstream software.
  • the evaluation resolution of such a fixed unit is severely limited because, for example, known cameras have a resolution of 600 dpi and because of the mirror deflection and the document size in conventional identity cards or passport cards only an evaluation accuracy of 100 dpi is possible.
  • the known document evaluation devices have a relatively low resolution and thus a relatively poor ability to recognize the authenticity features on the documents.
  • document testers are suitable for reading text from the document - as it is also known in flatbed scanners - but they are not suitable, for. B. read a 2D barcode or certainly not suitable to read the corresponding authenticity features, which are based on diffraction structures or the steganographically hidden in image components authenticity features.
  • flatbed scanners are not suitable for recognizing special structures on a document, because it is necessary to illuminate such special structures with different illumination sources.
  • EP 0 522 769 A1 There is known an image reading apparatus capable of recognizing predetermined images.
  • a read mode (BOOK-MODE)
  • the original is scanned by a CCD unit which is slidable in the X and Y directions.
  • SHEET MODE which operates independently of the BOOK MODE
  • a read head is moved along the Y direction by means of a scan motor.
  • the invention is therefore the object of developing a document tester of the type mentioned so that an automatic examination of a document for authenticity features quickly and accurately possible, with u. a. authenticity features with diffraction structures should be detected reliably and impeccably.
  • the invention is characterized by the technical teaching of claim 1.
  • An essential feature of the invention is that the document tester has a movable in the XY direction cross slide, wherein the for evaluation the authenticity features required components on this cross slide (hereinafter also called XY slide) are arranged.
  • the Austiciankomponenten are arranged on the X-Y slide, which for evaluating the diffraction structures and which, moreover, also for the evaluation of further authenticity features such.
  • a text a barcode, visible in the IR area font or other authenticity features.
  • the evaluation unit for evaluating the diffraction structures consists of a laser and a corresponding evaluation optics, the entire evaluation unit being arranged on an inner slide movable in the XY direction, this inner slide (also referred to below as X-slide) in FIG a movable in the Y direction outer carriage is arranged movable.
  • Such evaluation optics include, in particular, an OCR camera with objective that can read out certain document structures both in white light and in IR light.
  • the lighting unit is arranged on the Y-slide. Although this is not necessarily necessary for the solution, because a lighting unit (or even several lighting units) could also be arranged stationarily outside of the X-Y carriage so as also to be able to illuminate the document through the support surface. However, it is preferred if this lighting unit is arranged on the Y-carriage and consists of at least one illumination line, so that during the movement of the Y-carriage on the document along the line of illumination a line of light (scan line) on the document over the entire width of the document generated and this scan line is directed via a corresponding mirror optics on the OCR matrix camera and evaluated by this.
  • this lighting unit is arranged on the Y-carriage and consists of at least one illumination line, so that during the movement of the Y-carriage on the document along the line of illumination a line of light (scan line) on the document over the entire width of the document generated and this scan line is directed via a corresponding mirror optics on the OCR matrix
  • a stationary evaluation unit for fluorescence features of the document is arranged on the document checking device.
  • a fixed camera is mounted in the housing of the device, which sees on a mirror, which mirror in turn the bearing surface - on which rests the document - images.
  • the support surface is now illuminated in the UV range, so that the security elements of the document excited for fluorescence emit light and this is directed via the mirror onto the stationary matrix camera.
  • This evaluation unit is completely independent of the X-Y slide, and for this evaluation unit and their stationary arrangement as well as for the design of details separate protection - regardless of the other features of the invention - claimed.
  • this evaluation unit it may be provided that the stationarily arranged UV camera is omitted and that instead of the camera used for the laser evaluation on the X-slide camera is used at the same time to evaluate the UV image.
  • two separate cameras could be mounted on the X-carriage, one of which is suitable for laser evaluation of the diffraction structures, while the other camera is intended for evaluation of the UV image.
  • the invention is not limited to the aforementioned evaluation in the UV range; This depends in particular on the type of filter used and the type of illumination source used. Of course, all evaluations can also take place in a different spectral range; in particular, polarization filters can also be used instead of the UV filters, or completely different wavelength ranges can be used.
  • the wavelength range of the NIR can be used (near infrared range) or any other wavelength ranges. So far as in the following description of a UV evaluation is spoken, this is only to be understood as an exemplary embodiment.
  • the invention also relates to the kinematic reversal of an XY carriage. It has been stated hereinbefore that the carriage movable in the X-direction is the inner carriage and the carriage movable in the Y-direction is the outer carriage which can be moved along the document viewed in the longitudinal axis of the device. In kinematic reversal, it may also be provided that the inner carriage is movable in the Y direction and the outer carriage in the X direction.
  • the aforementioned X-Y carriage or the Y-X carriage can also be replaced by other, in two levels positionable, positioning systems. It is therefore envisaged that the entire evaluation components can be moved on a freely in space in two mutually perpendicular directions. This can be done by spindle drives, by electric motor drives or by electromagnetic drives.
  • Such systems which can be positioned freely in the X-Y plane are known. They consist of hydraulic or pneumatic cylinders, electric motor driven spindles or the like. More.
  • FIG. 1 In general, the housing 1 of a device is shown, which is approximately like a desk and has an angled 4 to the horizontal inclined front panel 2, within which a transparent support surface 3 (eg., Made of glass) is arranged. On this support surface 3, the document to be examined is placed and pressed with a defined contact pressure, so that the document surface to be examined from the bottom of the support surface 3 is visible.
  • a transparent support surface 3 eg., Made of glass
  • an XY carriage 7, 8 is arranged movable in the housing 1 in later to be described slide guides, wherein the Y-carriage 7 in the Y-direction 5 can be moved and the X-carriage in the direction of arrow 6 (namely perpendicular to the plane of the FIG. 1 ).
  • the less sensitive evaluation components are arranged, namely in particular an inclined obliquely to the plane of the front panel arranged lighting unit 14 which is preceded by a line-shaped focusing lens 15, so that also before the line-shaped formed illumination unit 14 radiated light is focused on the focusing lens 15 on the lying on the support surface 3, document underside.
  • the illumination unit 14 (see FIG. 6 ) consists of LEDs arranged in rows, which generate in particular white light.
  • other lighting units can be used such.
  • Legs Lighting unit which alternately provides LEDs, one part of the LEDs white light and the other emits an IR light.
  • each illumination unit 14 can produce a separate spectrum or even a mixed spectrum.
  • the light reflected by the illumination unit at the bottom of the document light is directed via the beam path 13 to a deflecting mirror 12 and directed there by a lens 11 on a line camera 10, which is suitable to evaluate the text on the document or even image information or hidden Information which, for example, can only be read in the NIR area.
  • a signal processing board 9 is fixed in the rest, with the help of the corresponding evaluations done. This ensures that the information paths and the cable lengths are short and therefore the entire arrangement is less susceptible to interference.
  • the direction of the beam path 16 may well be different, ie, in FIG. 1 the beam path 16 is inclined obliquely forward in the direction of the support surface 3, while in FIG. 3 the beam path 16 is inclined at an angle to the rear. Both inclined beam paths are claimed in the present invention.
  • the arrangement of an inclined beam path 16 at an angle to the support surface 3 has the advantage that with this illumination unit 14 and ultimately with the camera 10 first roughly determined during scanning the document, the corresponding positions of the later to be detected with the laser evaluation unit diffraction features on the document can be.
  • the line camera 10 when scanning the document surface, the position of the diffraction features to be recognized later with the laser optics becomes roughly coarse and only later verified with the arranged on the X-carriage laser evaluation components of this diffractive feature.
  • These components consist of a laser 21 (see also FIG. 2 ), which generates a beam path 22 on a deflection mirror 20, which in turn directs a beam path 23 on the document surface to be examined.
  • FIG. 1 shows only the basic position, while in the evaluation position of the XY slide is moved to a well-defined and suitable for the evaluation of the diffraction feature point below the support surface 3.
  • the reflected image generated by the diffractive feature is reflected on the ground glass 19 and forms on the ground glass 19 a specific diffraction pattern 49, which viewed through the ground glass 19 from below at a certain solid angle 24 of an OCR matrix camera 17 through an objective 18 becomes.
  • the diffraction pattern 49 impinging on the ground glass is focused in the lens 18 and directed to the OCR matrix camera 17 and evaluated there.
  • the UV evaluation unit will now be described below, which serves in particular for the evaluation of fluorescent authenticity features on the document surface.
  • the entire arrangement is especially designed for viewing in UV light.
  • a UV flash 26 is provided, which is provided with a filter disk 27 which directs a light with high UV content in the direction of arrow 30 on the document surface and thereby excites the document surface with characteristic florescent fluorescent threads.
  • the reflected light from the document 3 is directed between the limiting beam paths 32, 33 on the mirror 25 and from there via the lens 28 with the Abbdilung 31 imaged into the camera 29 and detected by a CCD chip arranged there.
  • a UV filter can be arranged, which blocks the UV light, so that only a light outside the UV range is detected by the camera.
  • the camera 29 can not be “blinded” by the UV flash 26.
  • each two consecutively arranged ball bushings 48 run (see FIG. 6 ), with which the Y-carriage 7 is firmly connected.
  • the entire Y-slide in the direction of arrows 5 in the Y direction is freely movable and controllable.
  • the drive is in this case via a stepper motor 34 which is firmly anchored to the housing 1 and which carries a toothed belt 37 via a drive shaft 36, which runs on the opposite side on a guide roller 40.
  • the one run of the toothed belt is in this case connected to the Y slide 7.
  • the invention is not limited to an overhead guide with overhead, parallel guide rails 35;
  • Other guide elements can also be used, in particular underlying guide rails 35, and instead of the four guide bushes 48 used, more or fewer guide bushes can also be used.
  • a housing 38 is arranged, in which fixed the line camera 10 and the lens 11 are arranged, which ensures that these parts are easily interchangeable and thus can be adjusted separately from each other. D. h., It can be due to the arrangement in the housing 38, the camera 10 factory adjusted very precisely to the lens 11 arranged there, and later, the entire housing 38 can be adjusted very precisely to the outside arranged deflecting mirror 12.
  • the X-carriage 8 is perpendicular to the plane of the FIG. 3 movably arranged in the Y-carriage.
  • the X-slide 8 is displaceable on a trained as a pipe guide 41 left-side guide to the plane of the FIG. 3 movably driven, while the right side of the guide is formed by a sliding guide 50, on which the Y-carriage only touches a sliding block and the guide rail is fixedly mounted in the Y-carriage.
  • two spaced-apart limit switches 42 are provided which also in the FIGS. 4 and 5 are shown.
  • X- and Y-axis thus each have two limit switches.
  • the drive motor 43 for the X-carriage is in this case mounted in the Y-carriage 7 and drives via its drive shaft 44 and a toothed belt 45 to the X-carriage 8 in the direction of arrow 6 at.
  • this toothed belt 45 runs according to a deflection roller 47 FIG. 5 in the Y-carriage 7.
  • the pipe guide 41 is in this case on two spaced apart bearing blocks 46 in the Y-carriage according to FIG. 5 attached.
  • FIG. 6 shows in plan view that the X-carriage 8 can be moved in two different end positions, wherein the end position of the X-carriage is indicated by 8 '.

Landscapes

  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Eye Examination Apparatus (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Claims (11)

  1. Appareil de vérification de documents pour le contrôle automatique de documents de valeur et de sécurité, qui présente un chariot en croix (7, 8) déplaçable dans la direction X-Y (5, 6), des composants (9-12, 14-21) pour l'analyse de caractéristiques d'authenticité étant disposés sur le chariot en croix, un premier groupe d'unités d'analyse (17-21) étant disposé sur le chariot en croix (8) déplaçable dans la direction X à l'intérieur du chariot Y, déplaçable dans la direction Y, du chariot en croix et étant donc déplaçable dans la direction X et dans la direction Y de telle sorte que les caractéristiques d'authenticité sont vérifiables localement sur leur position avec une résolution extrême et une précision de reconnaissance extrême, caractérisé en ce qu'un second groupe d'unités d'analyse (9-12, 14, 15) est disposé sur le chariot Y déplaçable dans la direction Y et n'est pas déplaçable dans la direction X, le second groupe d'unités d'analyse étant conçu de telle sorte que, sur la base des données enregistrées par le second groupe d'unités d'analyse (9-12, 14, 15), la position des caractéristiques d'authenticité sur le document de valeur et de sécurité balayé est localisable approximativement dans la direction X et dans la direction Y, et en ce que des moyens sont présents qui déplacent le premier groupe d'unités d'analyse (17-21) sur la position localisée des caractéristiques d'authenticité.
  2. Appareil de vérification de documents selon la revendication 1, caractérisé en ce que le premier groupe d'unités d'analyse ou le second groupe d'unités d'analyse présente des dispositifs pour l'analyse d'un texte et/ou d'un champ infrarouge ou d'un champ photo.
  3. Appareil de vérification de documents selon l'une quelconque des revendications 1 à 2, caractérisé en ce que le premier groupe et/ou le second groupe d'unités d'analyse présente une unité d'éclairage (14, 21) et une optique d'analyse (17-20).
  4. Appareil de vérification de documents selon la revendication 3, caractérisé en ce que l'unité d'éclairage du premier groupe d'unités d'analyse est conçue sous forme de laser (21).
  5. Appareil de vérification de documents selon la revendication 3, caractérisé en ce que l'unité d'éclairage du second groupe d'unités d'analyse est conçue sous forme de ligne d'éclairage, de préférence sous forme de LED disposées en forme de ligne.
  6. Appareil de vérification de documents selon la revendication 3, caractérisé en ce que l'optique d'analyse du premier groupe d'unités d'analyse présente, en suivant la trajectoire du faisceau du laser, un miroir d'analyse (20), un disque mat (19), un objectif (18) et une caméra à matrice OCR (17).
  7. Appareil de vérification de documents selon la revendication 6, caractérisé en ce que la caméra à matrice OCR (17) est conçue de telle sorte qu'elle enregistre des images dans la plage de longueurs d'onde visibles et/ou dans la plage de longueurs d'ondes infrarouge.
  8. Appareil de vérification de documents selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le chariot X et le chariot Y sont entraînés par moteur.
  9. Appareil de vérification de documents selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il est prévu une troisième unité d'analyse (25-29), qui est conçue de façon fixe.
  10. Appareil de vérification de documents selon la revendication 9, caractérisé en ce que la troisième unité d'analyse est prévue pour l'analyse de caractéristiques de fluorescence, qui présente une source d'éclairage UV (26).
  11. Appareil de vérification de documents selon la revendication 10, caractérisé en ce que la source d'éclairage UV est conçue de telle sorte qu'elle délivre un éclair UV.
EP01940526A 2000-06-07 2001-05-25 Appareil de verification de documents Expired - Lifetime EP1287496B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10028241A DE10028241A1 (de) 2000-06-07 2000-06-07 Dokumentenprüfgerät
DE10028241 2000-06-07
PCT/EP2001/005990 WO2001095261A1 (fr) 2000-06-07 2001-05-25 Appareil de verification de documents

Publications (2)

Publication Number Publication Date
EP1287496A1 EP1287496A1 (fr) 2003-03-05
EP1287496B1 true EP1287496B1 (fr) 2009-07-08

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EP01940526A Expired - Lifetime EP1287496B1 (fr) 2000-06-07 2001-05-25 Appareil de verification de documents

Country Status (9)

Country Link
US (1) US6892946B2 (fr)
EP (1) EP1287496B1 (fr)
CN (1) CN1191554C (fr)
AT (1) ATE436061T1 (fr)
CA (1) CA2411689C (fr)
DE (2) DE10028241A1 (fr)
HU (1) HU227013B1 (fr)
PL (1) PL204284B1 (fr)
WO (1) WO2001095261A1 (fr)

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US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities

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Publication number Priority date Publication date Assignee Title
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities

Also Published As

Publication number Publication date
CA2411689C (fr) 2007-10-30
ATE436061T1 (de) 2009-07-15
EP1287496A1 (fr) 2003-03-05
HUP0300799A2 (en) 2003-08-28
CN1430770A (zh) 2003-07-16
PL204284B1 (pl) 2009-12-31
CN1191554C (zh) 2005-03-02
WO2001095261A1 (fr) 2001-12-13
CA2411689A1 (fr) 2002-12-06
US6892946B2 (en) 2005-05-17
DE10028241A1 (de) 2001-12-13
HU227013B1 (en) 2010-04-28
US20030156274A1 (en) 2003-08-21
PL359020A1 (en) 2004-08-23
DE50114972D1 (de) 2009-08-20

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