EP1743305A1 - Vorrichtung zur echtheitsprüfung eines wert- oder sicherheitsdokuments - Google Patents
Vorrichtung zur echtheitsprüfung eines wert- oder sicherheitsdokumentsInfo
- Publication number
- EP1743305A1 EP1743305A1 EP05707435A EP05707435A EP1743305A1 EP 1743305 A1 EP1743305 A1 EP 1743305A1 EP 05707435 A EP05707435 A EP 05707435A EP 05707435 A EP05707435 A EP 05707435A EP 1743305 A1 EP1743305 A1 EP 1743305A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- value
- security document
- electrical
- authenticity
- 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.)
- Granted
Links
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
- G07D7/02—Testing electrical properties of the materials thereof
- G07D7/026—Testing electrical properties of the materials thereof using capacitive sensors
-
- 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
-
- 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
- G07D7/128—Viewing devices
Definitions
- the present invention relates to a device for checking the authenticity of a value or security document and to a digital storage medium, in particular a computer program product.
- DE 3840729A1 discloses a multi-layer recording medium, in particular an identification card, in which an outer color layer has a first color and an inner color layer has a second color.
- DE 19836813A1 discloses a value and security document with optically stimulable dyes for checking the authenticity. The dyes are embedded in a carrier material and, together with the carrier material, form a laser-active element.
- a security document with an embedded areal security element (security thread) is known, which is constructed in multiple layers and has electroluminescent properties.
- EP 1059619B1 discloses an arrangement for the visual and mechanical authenticity check of value and security documents based on an electromagnetic excitation of electroluminescent properties.
- the invention is based on the object of creating an improved device for checking the authenticity of a value or security document and a corresponding digital storage medium, in particular a computer program product.
- the device according to the invention serves to check the authenticity of a value or security document which has a dielectric property, in particular dielectric particles.
- the dielectric particles can be in or multiple layers in or on the value or security document.
- the dielectric particles in different layer thicknesses are printed on or in the value or security document using different printing methods, for example by means of offset printing or steel engraving.
- the dielectric property is not realized by dielectric particles, but rather by dielectric material of the value or security document.
- the distribution of the dielectric material or the dielectric particles in / or on the value or security document forms the basis for checking the authenticity by means of the device according to the invention.
- an electrical signal is measured, which is dependent on the dielectric properties of the value or security document. This signal is compared to a reference signal. If the measured electrical signal and the reference signal agree sufficiently, the value or security document is rated as genuine.
- the device has means for generating an electrical field for penetrating the value or security document at least in a partial area. At least one electrode for field generation is preferably provided for this.
- the electrical signal depends on the electrical capacitance formed from the at least one electrode and the value or security document.
- the electrical field preferably only penetrates a partial area of the value or security document. When the value or security document moves through this field area, a time-varying electrical signal is obtained which is compared with a corresponding reference signal in order to check the authenticity of the value or security document.
- the electric field is generated by two opposite electrodes which form a gap for receiving a partial area of the document of value or security. In this area, the value or security document is penetrated by the electrical field, so that an electrical capacitance resulting from the dielectric particles of the value or security document located in the partial area results.
- an essentially planar electrode arrangement is provided on one side of the value or security document.
- the device has a drive for the relative movement of the value or security document and the electrical field.
- the drive and thus the transport speed of the value or security document along the field-generating electrode is preferably regulated as a function of the measured electrical signal.
- the value or security document has a luminescent, in particular an electroluminescent, property.
- the luminescent property is advantageously excited by the electric field, which is also used to measure the signal dependent on the electrical capacitance.
- the luminescent property can be checked visually, for example through a viewing window of the device. Alternatively or additionally, the check is carried out electronically, for example by recording the luminescence using an optical sensor and comparing the corresponding signal with a reference signal.
- the dielectric particles of the value or security document also have electroluminescent properties.
- inorganic pigments of generally II-VI compounds such as ZnS, CaS, CdS, ZnSe, ..., but also SiC or GaAs are preferably used.
- these inorganic pigments can be combined with dielectric materials by means of complete or partial microencapsulation.
- organic polymers with electro-optical properties for example thianthrene polymers, can be used as dielectric particles of the value or security document.
- the distribution of the dielectric particles with the electroluminescent properties in and / or on the value or security document therefore results in a double security feature, which is checked by measuring the total electrical capacitance formed with the electrode arrangement of the device and the luminescence signal emitted by the excitation of the electric field can be. It is particularly advantageous that no separate optical means are required to excite the luminescence.
- the electrode arrangement for generating the electrical field is essentially symmetrical and planar.
- an optical sensor is preferably arranged on an axis of symmetry of the planar electrode arrangement.
- the value or security document is drawn through the gap formed between the optical sensor and the planar electrode arrangement, both security features, i.e. the electrical capacitance profile and the profile of the luminescence, being checked when the value or security document moves through the gap.
- the device has a user interface for outputting an acoustic, visual and / or tactile signal for displaying the result of the authenticity check.
- the electrical signals which are dependent on the distribution of the dielectric particles, are preferably evaluated by a logic circuit which, if there is sufficient agreement with the corresponding reference signals, outputs a logic signal signaling the authenticity of the value or security document to the user interface.
- FIG. 1 shows a schematic, perspective illustration of a banknote with dielectric particles and materials
- Figure 2 is a block diagram of an embodiment of the device according to the invention.
- FIG. 3 shows a block diagram of a further embodiment of the device according to the invention.
- FIG. 4 shows an embodiment of the device according to the invention with a measuring bridge
- FIG. 5 shows an embodiment of the device according to the invention with a logic circuit
- FIG. 6 shows an example of a signal curve in the device in FIG. 5,
- FIG. 7 shows a block diagram of a further embodiment of the device according to the invention.
- FIG. 8 shows a flow diagram of a preferred mode of operation of the device of FIG. 7.
- FIG. 1 shows a schematic or perspective view of a value or security document 100, which in the example case considered here is a bank note.
- Document 100 has a substrate 102 with a specific dielectric constant ⁇ 1 .
- the document 102 there is an imprint 104 with dielectric particles with a dielectric constant ⁇ 2 .
- Another print 106 on the document 100 has a dielectric constant ⁇ 3 .
- Inside the document 100 there is an inclusion 110 with a dielectric constant ⁇ s .
- the dielectric material of the substrate 102, the imprint 104, 106, the sticker 108, the insert 110 and / or the embossment 112 have electroluminescent properties.
- FIG. 2 The embodiment of a device 200 according to the invention shown in FIG. 2 can be used to check the authenticity of the document 100.
- a pair of rollers is formed by the opposing rollers 202 and 204 of the device 200, through which the document 100 is driven in the direction of the arrow 206.
- the device 200 has an electrode arrangement which, in the exemplary embodiment considered here, consists of the electrodes 208 and 210 lying opposite one another.
- the electrodes 208, 210 are used to generate an electrical field 212 which penetrates the document 100 in a partial area.
- the electrodes 208, 210 are connected to a measuring circuit 214, which emits an electrical signal 216 which is dependent on the dielectric properties of the partial area of the document 100 located in the region of the electrical field 212.
- a comparator 218 is connected to the measuring circuit 214 and a reference memory 220, from which the comparator 218 receives a reference signal 222.
- the comparator 218 compares the signal 216 with the reference signal 222 and, as a result of the comparison, outputs a logic signal 224 to a user interface 226.
- the logic signal 224 has three different logic values: a first logic value, for example 01, which is output if the signal 216 corresponds sufficiently with the reference signal 222, a second logic value, for example 00 if the signal 216 does not sufficiently corresponds to the reference signal 222, and a third logical value, for example 11, if no clear statement is possible.
- the user interface 226 has a red light-emitting diode 228, a yellow light-emitting diode 230 and a green light-emitting diode 232.
- the green light-emitting diode 232 is activated, upon receipt of the signal 00 the red light-emitting diode 228 and when signal 11 is received, the yellow LED 230.
- FIG. 3 shows a further embodiment of the device 200. Elements of the embodiment of FIG. 3 which correspond to elements of FIG. 2 are identified by the same reference numerals.
- the electrodes 208 and 210 are arranged next to one another on the same side of the document 100. The corresponding course of the electric field 212 is shown in FIG. 3.
- the electrical field 212 excites the electroluminescence of the electrical particles of the document 100 insofar as they have electroluminescent properties and are located in the partial area of the document 100 which is penetrated by the electrical field 212.
- the electroluminescent radiation 234 thereby excited can pass through a viewing window 236, which is arranged on the side of the document 100 opposite the electrodes 208, 210, so that a user of the device can visually check the corresponding security feature through the viewing window 236. For example, a certain pattern or motif must appear in the viewing window 236 if the document 100 is genuine.
- FIG. 4 shows an embodiment of the measuring circuit 214 of FIG. 3
- Measuring circuit 214 has an impedance measuring bridge 238, preferably a capacitance measuring bridge, for measuring that through the document 100 and the electrodes
- Impedance Z x is the capacitance C x of the arrangement formed by the electrodes 208, 210 and the document 100, which depends on the local dielectric properties of the document 100.
- the signal supplied by the impedance measuring bridge 238 is amplified by means of an amplifier 240, so that the signal 216 (cf. FIG. 3) is obtained.
- the further elements of the device 200 are not shown in the figure for the sake of clarity.
- FIG. 5 shows a digital circuit 242 for determining the signal 216. Elements in FIG. 5 which correspond to elements in the preceding figures are again identified by the same reference symbols.
- the resulting capacitance of the electrodes 208, 210 under the influence of the document 100 is CBN in FIG designated.
- the digital circuit 242 has a reference capacitance 244 CREF.
- the capacitance CREF is of the order of magnitude of the capacitance of the electrode arrangement under the influence of only the substrate 102 (cf. FIG. 1) of the document 100.
- the digital circuit 242 also has the multivibrators (astable multivibrators) M1 and M2.
- the multivibrator M1 is controlled by CB N and synchronized by the multivibrator M2.
- the Multivibrator M2 is controlled by CREF.
- the output signals Ui and U 2 of the multivibrators M1 and M2 are linked to one another via the logic gate 246 and the output signal U 3 of the gate 246 is smoothed by means of the low-pass filter (TP) 248, so that the signal 216 is obtained.
- TP low-pass filter
- FIG. 6 shows the time course of the signal voltage pulses of the signals U- ⁇ , U 2 and U 3 of FIG. 5, for example on the condition that CBN is currently larger than CREF.
- FIG. 7 shows a further preferred embodiment of the device 200. Elements in FIG. 7 which correspond to elements in the previous figure are again identified by the same reference numerals.
- an optical sensor 250 is arranged above the electrodes 208 and 210 alternatively or in addition to the viewing window.
- This can be a photodiode, a photomultiplier or a CCD-based sensor.
- the optical sensor 250 is connected to a measuring circuit 252, which supplies a signal 254.
- the luminescence radiation 234 is detected by the optical sensor 250 and evaluated by the measuring circuit 252. Accordingly, the signal 254 is representative of the luminescent radiation 234. This can be a single signal value or complex image information.
- the optical sensor 250 is preferably arranged on the axis of symmetry 268 of the electrodes 208, 210.
- a comparator 256 receives a reference signal 260 from a reference memory 258 and the signal 254 from the measuring circuit 252 in order to compare the signal 254 with the reference signal 260.
- the mode of operation of the comparator 256 can be similar to that of the comparator 218.
- the comparator 256 can be an image processing unit that compares reference image data supplied by the reference memory 258 with the image data of the signal 254. If the comparator 256 determines a sufficient match, it outputs a corresponding signal 262 to the logic circuit 264, which also receives the signal 224 from the comparator 218.
- the signal 262 has, for example, the value 01 if the signal 254 agrees sufficiently with the reference signal 260, the value 00 if such an adequate match does not exist, and the value 11 if no clear statement is possible.
- the logic circuit 264 combines the signals 224 and 262 with one another in order to control the user interface 226 accordingly.
- the green light emitting diode 232 is activated when both the signal 224 and the signal 262 have the value 01.
- the red light-emitting diode 228 is activated when one of the signals 224 or 262 has the value 00.
- the yellow light-emitting diode 230 is activated when none of the signals 224 or 262 has the value 00, but at least one of the signals 224 or 262 has the value 11.
- the change in the signals 224 and 262 received by the logic circuit 264 is representative of the speed of movement of the document 100 by the roller pair 202, 204. Accordingly, the drive speed can be controlled by the logic circuit 264 by driving the motor 266 which drives the roller pair 202, 204 in order to set or adjust this to maintain a target movement speed.
- FIG. 8 shows a corresponding flow chart.
- step 800 the value or security document is inserted or introduced into the device according to the invention.
- the device has a corresponding slot for this purpose, for example in the case of payment machines with a banknote feeder.
- step 802 the drive for feeding the document is started.
- step 804 an electric field, preferably an alternating electric field, is switched on in order to measure a capacitance caused by the local dielectric properties of the document and to excite electroluminescence.
- an optical signal for detecting the electroluminescence and a capacitance-dependent signal for detecting the local dielectric properties are measured accordingly.
- the two signals are evaluated. If the optical signal matches an optical reference signal and the capacitance-dependent signal matches a capacitance reference, the document is considered authentic (step 814). In this case the document is accepted.
- step 812 acceptance of the document is refused.
- the drive is operated in the opposite direction so that the document is pushed out of the device again. This embodiment is particularly advantageous for a payment machine.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI200532051A SI1743305T1 (sl) | 2004-05-07 | 2005-02-16 | Naprava za preverjanje pristnosti vrednostnega dokumenta ali varnostnega dokumenta |
| CY20161100279T CY1117500T1 (el) | 2004-05-07 | 2016-04-06 | Διαταξη για τον ελεγχο της γνησιοτητας ενος εγγραφου αξιας ή ασφαλειας |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004022752.7A DE102004022752B4 (de) | 2004-05-07 | 2004-05-07 | Vorrichtung zur Echtheitsprüfung eines Wert- oder Sicherheitsdokuments |
| PCT/EP2005/001568 WO2005116941A1 (de) | 2004-05-07 | 2005-02-16 | Vorrichtung zur echtheitsprüfung eines wert- oder sicherheitsdokuments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1743305A1 true EP1743305A1 (de) | 2007-01-17 |
| EP1743305B1 EP1743305B1 (de) | 2016-01-20 |
Family
ID=34960751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05707435.3A Expired - Lifetime EP1743305B1 (de) | 2004-05-07 | 2005-02-16 | Vorrichtung zur echtheitsprüfung eines wert- oder sicherheitsdokuments |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1743305B1 (de) |
| CY (1) | CY1117500T1 (de) |
| DE (1) | DE102004022752B4 (de) |
| ES (1) | ES2567059T3 (de) |
| SI (1) | SI1743305T1 (de) |
| WO (1) | WO2005116941A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006048401A1 (de) | 2006-10-12 | 2008-04-17 | Printed Systems Gmbh | System und Verfahren zum Speichern und Lesen von Informationen |
| DE102013009700B4 (de) * | 2012-06-13 | 2016-12-01 | Giesecke & Devrient Gmbh | Verfahren und Prüfgerät zur Prüfung eines Wertdokuments |
| GB2503662A (en) * | 2012-07-02 | 2014-01-08 | Rue De Int Ltd | Identifying a security document using capacitive sensing |
| DE102013205052B4 (de) * | 2013-03-21 | 2025-12-04 | Bundesdruckerei Gmbh | Vorrichtung und Verfahren zur kontaktlosen Anregung |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR562400A (fr) | 1922-04-19 | 1923-11-09 | Davey Bickford Ets | Nouveau procédé pour l'utilisation et le chargement de l'azoture de plomb |
| US4218674A (en) | 1975-09-09 | 1980-08-19 | Dasy Inter S.A. | Method and a system for verifying authenticity safe against forgery |
| US4355300A (en) | 1980-02-14 | 1982-10-19 | Coulter Systems Corporation | Indicia recognition apparatus |
| DE3840729C2 (de) | 1988-12-02 | 1997-07-17 | Gao Ges Automation Org | Mehrschichtiger Aufzeichnungsträger und Verfahren zum Beschriften eines mehrschichtigen Aufzeichnungsträgers |
| GB8829208D0 (en) * | 1988-12-15 | 1989-01-25 | Palmer Paul | Banknote counterfeit detecting apparatus |
| US5308992A (en) * | 1991-12-31 | 1994-05-03 | Crane Timothy T | Currency paper and banknote verification device |
| DE19512921A1 (de) * | 1995-03-30 | 1996-10-02 | Lfp Elektronische Spezialsiche | Einrichtung zur Prüfung von Sicherheitsdokumenten |
| DE19548532A1 (de) | 1995-12-22 | 1997-06-26 | Giesecke & Devrient Gmbh | Verfahren zur Detektion eines elektrisch leitfähigen Elements in einem Dokument |
| GB9607788D0 (en) | 1996-04-15 | 1996-06-19 | De La Rue Thomas & Co Ltd | Document of value |
| DE19708543C2 (de) | 1997-03-04 | 2000-12-07 | Bundesdruckerei Gmbh | Wert- und Sicherheitserzeugnis mit lumineszierenden Sicherheitselementen und Verfahren zur Herstellung derselben |
| EP1059619B1 (de) | 1997-03-04 | 2003-02-05 | BUNDESDRUCKEREI GmbH | Anordnung zur visuellen und maschinellen Echtheitsüberprüfung von Wert- und Sicherheitsdokumenten |
| DE19735293C2 (de) | 1997-08-14 | 2003-06-12 | Bundesdruckerei Gmbh | Wert- und Sicherheitserzeugnis mit Lumineszenzelement |
| DE19836813A1 (de) | 1998-08-14 | 2000-02-24 | Bundesdruckerei Gmbh | Wert- und Sicherheitsdokument mit optisch anregbaren Farbstoffen zur Echtheitsprüfung |
| DE19903988B4 (de) | 1999-02-02 | 2008-05-08 | Bundesdruckerei Gmbh | Vorrichtung zur Validierung von Echtheitsmerkmalen auf Wert- und Sicherheitsdokumenten |
| DE19926010C2 (de) | 1999-06-08 | 2003-01-30 | Bundesdruckerei Gmbh | Wert- und Sicherheitsdokument mit Sicherheitsmerkmal mit Piezo-Effekt-basierten Eigenschaften und dazugehöriges Nachweisverfahren |
| DE10027726A1 (de) * | 2000-06-03 | 2001-12-06 | Bundesdruckerei Gmbh | Sensor für die Echtheitserkennung von Signets auf Dokumenten |
-
2004
- 2004-05-07 DE DE102004022752.7A patent/DE102004022752B4/de not_active Expired - Lifetime
-
2005
- 2005-02-16 SI SI200532051A patent/SI1743305T1/sl unknown
- 2005-02-16 ES ES05707435.3T patent/ES2567059T3/es not_active Expired - Lifetime
- 2005-02-16 EP EP05707435.3A patent/EP1743305B1/de not_active Expired - Lifetime
- 2005-02-16 WO PCT/EP2005/001568 patent/WO2005116941A1/de not_active Ceased
-
2016
- 2016-04-06 CY CY20161100279T patent/CY1117500T1/el unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005116941A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CY1117500T1 (el) | 2017-04-26 |
| ES2567059T3 (es) | 2016-04-19 |
| EP1743305B1 (de) | 2016-01-20 |
| WO2005116941A1 (de) | 2005-12-08 |
| SI1743305T1 (sl) | 2016-10-28 |
| DE102004022752A1 (de) | 2005-12-01 |
| DE102004022752B4 (de) | 2018-03-08 |
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