EP2976755A1 - Device and method for verifying the authenticity of a document of value or security document - Google Patents
Device and method for verifying the authenticity of a document of value or security documentInfo
- Publication number
- EP2976755A1 EP2976755A1 EP14712261.8A EP14712261A EP2976755A1 EP 2976755 A1 EP2976755 A1 EP 2976755A1 EP 14712261 A EP14712261 A EP 14712261A EP 2976755 A1 EP2976755 A1 EP 2976755A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- excitation
- transformer
- electrode
- voltage
- value
- 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
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005284 excitation Effects 0.000 claims abstract description 104
- 230000005855 radiation Effects 0.000 claims description 27
- 230000008676 import Effects 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000012795 verification Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 abstract description 2
- 239000000049 pigment Substances 0.000 description 25
- 238000011156 evaluation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- G07D7/023—Measuring conductivity by direct contact
-
- 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
Definitions
- the invention relates to an apparatus and a method for checking the authenticity of a value or security document.
- Securities or security documents such as banknotes, personal documents, credit cards and the like, may have so-called security or authenticity features attached to or in the document.
- security features may e.g. be stimulated from the outside and analyzed at or after the suggestion.
- Typical authenticity features are fluorescent pigments which, when excited by a special sensor, can light up and be verified.
- DE 10 2008 047 636 A1 discloses a device for checking the authenticity of a security document, which has at least one security feature electroluminescent at an excitation frequency in a high-voltage alternating field, with a sensor unit comprising an excitation module, a condenser system and a
- Detector unit includes.
- the security document is moved by the sensor unit and the luminescent light is collected by the condenser system and applied to the
- the excitation module has a gap-shaped opening, which has a
- Security document is to bridge an air gap, e.g. between an electrode and the value or security document.
- an air gap e.g. between an electrode and the value or security document.
- Dielectric strength of the air is a limiting factor for the excitation field. In previous designs, there was one for the existing air routes
- DE 44 10 253 C2 discloses a circuit arrangement for supplying energy to electroluminescent films, which excites this luminous layer to emit radiation in the visible range by means of a higher-frequency change in the potentials of two electrodes enclosing a luminous layer. In the document becomes a
- US 4,633,141 A discloses a power converter for an electroluminescent device, wherein the electroluminescent device of a
- Low-voltage source can be powered.
- Switching transistors convert a low-DC voltage to a low-AC voltage, which is subsequently increased and coupled to a resonant circuit which supplies the
- electroluminescent device comprises.
- EP 1 025 387 B1 discloses a lighting device which is arranged on motor vehicles and / or in the interiors of motor vehicles, with an electroluminescent layer arrangement comprising at least a first electrode layer, a
- Dielectric layer Dielectric layer, an electroluminescent luminescent layer and a transparent second electrode layer, wherein the electroluminescent layer arrangement is arranged on a support and / or in a frame, and the electrode layers are connected to an AC drive device, wherein the
- AC drive device is arranged on a circuit board, which is connected to the carrier and / or simultaneously formed as a support for the electroluminescent layer assembly, wherein the circuit board with drive means and electroluminescent layer assembly and optionally a covering the electroluminescent layer arrangement transparent cover a compact Form building unit.
- US 5,663,573 A discloses a light emitting bipolar device consisting of a light emitter consisting of an electroluminescent organic light emitting material in contact with an insulating material. The light emitter is in contact with two electrodes which are held in spaced relation to each other. The device operates with an AC voltage of less than 24 volts, in some embodiments less than 5 volts.
- US 2004/0035932 A1 discloses a discriminating device which is equipped with an AC voltage applying means for applying an AC voltage to electrodes. Further disclosed is a light detecting device for detecting light from a light collecting point of a bill, which is in a
- an optical splitter means for splitting the light detected by the light detecting means into light of a fluorescent ink and other light.
- a control agent for controlling the AC applying agent.
- an authenticity discriminating means for discriminating the authenticity of the bill based on an output value of the light detecting means.
- the control means for controlling the AC applying means operates the AC applying means only when the light detecting means discriminates that it detects light from the fluorescent ink based on a result of the optical division by the optical divider means.
- Resonance circuit is selected higher than usual excitation frequencies. This advantageously allows a voltage amplitude of the excitation voltage to to reduce. This in turn can be a space of elements of the resonant circuit can be reduced.
- Proposed is a device for authenticity verification of a value
- a security document is any document that is a physical entity that is against unauthorized manufacture and / or
- Security features are features that make it difficult to falsify and / or duplicate compared to a simple copy at least. Physical entities that include or form a security feature are referred to as security features.
- a security document may include multiple security features and / or security elements. As defined herein, a security document always ceases
- Security element examples of security documents, which also include value documents that represent a value, include, for example, passports,
- Health insurance cards banknotes, postage stamps, bank cards, credit cards,
- the value or security document may be an electroluminescent
- Electroluminescent pigments include.
- the device comprises at least a first AC voltage source, a first transformer and at least one first electrode.
- the first transformer is the input side to the first AC voltage source and the output side electrically connected to the first electrode.
- an output voltage having a first amplitude and an excitation frequency can be generated.
- the output voltage can be transformed into an excitation voltage having a second amplitude. The second amplitude may be higher than the first amplitude.
- Excitation voltage an electric excitation field.
- the device may further comprise a housing in which the first AC voltage source, the first transformer and the first electrode are arranged.
- the first electrode may in particular be arranged on an edge of the housing, so that the electric field lines extend away from this edge of the housing or towards this edge of the housing.
- the housing can form an import volume, opened at least on one side, for the value or security document.
- an edge portion or several edge portions of the housing may include or limit the import volume.
- the import volume may e.g. be formed by two spaced apart with a predetermined distance surfaces of an edge of the housing.
- the import volume may be designed as an insertion slot into which the value or security document is inserted along a movement path and from which the value or security document, e.g. after the authenticity check, it is executed again.
- the import volume may be a volume opened to one side or to several sides.
- the first electrode is in this case arranged such that the electric field lines of the excitation field extend at least partially into the import volume or run through the import volume.
- a value or security document arranged in the import volume can be subjected to the electrical excitation field.
- the first transformer and the first electrode are designed such that a resonant frequency of a resonant circuit, which is at least one
- Secondary inductance of the transformer and a capacitance of the first electrode is greater than or equal to 80 kHz.
- the excitation frequency corresponds to the
- the proposed device is thus operable with a very high resonance frequency, in which case the excitation frequency of the resonance frequency equivalent.
- the high excitation frequency causes a high in an advantageous manner
- Rate of change of a field reversal of the electrical excitation field (dU / dt). Since the emission excitation of electroluminescent pigments is dependent on the rate of change of the excitation field, the amplitude of the excitation voltage, ie the second amplitude, can thus be reduced.
- Resonance circuit to be stored energy, so the magnetic or electrical energy to be stored, reduced.
- the space required for a ferrite core of the transformer, which serves to store the magnetic energy can be reduced at a lower power.
- the reduction of the maximum voltage of the excitation voltage causes a reduced insulation requirement e.g. from windings of the transformer. Again, this leads to a reduction of space requirements.
- Excitation voltage also results in improved reliability of the transformer. This stores e.g. for a human user, with reduced amplitude of the excitation voltage, less energy available to the user e.g. could be dangerous if touched.
- the resonant frequency is greater than or equal to 80 kHz. Further preferred are 150-250 kHz.
- the increase in the resonant frequency and thus the excitation frequency advantageously also makes it possible to minimize the risk of air breakdown during operation of the device since, as explained above, smaller amplitudes of the excitation voltage can be used.
- the device further comprises a detection device for detecting the radiation emitted by the electroluminescent pigments.
- the device may comprise at least one optical element, for example a lens, in order to ensure a desired beam path of the emitted radiation.
- the device can comprise additional excitation devices, in particular optical excitation devices, eg a device for generating UV radiation. This can for example be arranged such that it also emits a further excitation radiation in the previously explained import volume and thus towards the value or security document.
- the device may comprise further excitation means, e.g. encourage further safety pigments on or in the asset or security document.
- further excitation means e.g. encourage further safety pigments on or in the asset or security document.
- photoluminescent pigments can be excited and the radiation emitted by these pigments can be evaluated.
- evaluation of the radiation emitted by photoluminescent pigments as so-called
- Predection can be used.
- Excitation field only take place when at least one evaluation criterion is met in the evaluation of the radiation emitted by photoluminescent pigments radiation.
- the first transformer may have a commercially available CCFL transformer design.
- the first transformer may have a commercially available CCFL transformer design.
- Module can be e.g. arranged in a module, e.g. to be shed.
- the resulting module advantageously has a compact design.
- modules can be integrated, for example, in ATMs.
- the resonant circuit further comprises a winding capacitance of a secondary winding of the transformer and a resulting capacitance of stray capacitances.
- the resulting capacity of stray capacitances refers to a resulting capacitance of device-based stray capacitances of the device. Stray capacitances arise e.g. from capacitances between elements of the resonant circuit, for example a wiring or parts of the
- a total capacity of the resonant circuit can be
- Cp Cw + Ce ⁇ Cs Formula 1 where Cp denotes the total capacitance of the resonant circuit, Cw the winding capacity of the secondary inductance, Ce the capacitance of the first electrode or of an electrode assembly comprising the first electrode and Cs the resulting capacitance of stray capacitances.
- fres denotes the resonance frequency
- Ls denotes the secondary inductance.
- Es (Cp x Us 2 ) / 2 Formula 3 where Es denotes the stored energy and Us the maximum voltage amplitude of the excitation voltage.
- the resonance frequency can thus advantageously be increased on the one side, but the maximum energy stored in the resonant circuit can be lowered. This advantageously allows the reduction of a space of the proposed device, since the space in the
- a further advantageous aspect is that with a reduction in the installation space of the transformer, the winding capacitance Cw is likewise reduced, as a result of which, as can be seen from formulas 2 and 3, the resonance frequency fres increases and the maximum energy Es stored in the resonant circuit decreases.
- the inventive choice of the resonant frequency thus advantageously causes a reduction in space through various aspects.
- the secondary inductance of the transformer is at most 0.8 H.
- the secondary inductance is 0.1 H.
- a total capacity Cp is at most 30 pF.
- the total capacitance Cp of the resonant circuit 10 is pF.
- Construction volume of the transformer can be in this case, for example, 24 x 20 x 15 mm.
- the device comprises a further electrode.
- the electrical excitation field can form between the first and the further electrode.
- the further electrode may in particular be arranged at a predetermined distance from the first electrode. If the device has the above-explained import volume, then the first electrode can be arranged on or on a surface of a first edge section, for example of a housing of the device, wherein the further electrode is connected to another
- Edge portion of the housing may be arranged, which is opposite to the first edge portion.
- the edge sections may include the import volume.
- the device comprises a further
- the further transformer is the input side to the first or another voltage source and the output side electrically connected to the other electrode.
- a further excitation voltage can be generated on the output side.
- the further excitation voltage has a
- an amplitude of the further excitation voltage can be greater than the amplitude of the output voltage of the first AC voltage source.
- an output voltage of the other transformer may have a greater amplitude than an output voltage of the other AC voltage source.
- Transformer is generated, and the further excitation voltage, which is generated by the further transformer, amplitudes of equal height.
- phase offset proposed according to the invention advantageously results in that a maximum amplitude of the resulting excitation voltage which generates the electrical excitation field between the electrodes is greater than, in particular twice as large as, the maximum amplitude of the first excitation voltage or the further excitation voltage. For example, a resulting
- Excitation voltage with a maximum amplitude of 3 kV are generated by the excitation voltage generated by the first transformer has a maximum amplitude of 1, 5 kV and the excitation voltage generated by the other transformer also has an amplitude of 1, 5 kV.
- the device is designed such that the device forms the previously explained import volume for the value or security document to be checked.
- the first and the further electrodes are arranged on opposite sides of the insertion volume at a predetermined first distance. Further, the first and the further electrode are arranged transversely to an insertion direction of the value or security document at a predetermined further distance.
- the insertion direction can be defined here, for example, as a first direction.
- the first distance then designates a distance in a second direction, which is oriented perpendicular to the first direction.
- the second direction may be perpendicular to a surface of a value or security document to be checked, if this is arranged in the import volume.
- the second direction is oriented perpendicular to surfaces of edge portions of the housing of the device, wherein the edge portions comprise the import volume at least partially.
- the first and the further electrode as previously explained, arranged on opposite sides or edge portions of the housing.
- first and the further electrodes can be arranged at a distance from the predetermined further spacing with respect to the insertion direction, that is to say in a third direction, the third direction being oriented perpendicular to the first direction and perpendicular to the second direction.
- the electric field which forms between the first and the further electrode comprises both portions in the second direction and portions in the third direction.
- the shares in third direction is essential to excite electroluminescent pigments in a value or security document to be tested.
- the electrodes may also be arranged relative to one another as described in DE 10 2008 047 636 A1.
- the predetermined first distance is between 0.5 mm and 2.0 mm and the predetermined further distance is 1.0 mm to 3.0 mm.
- the proposed distances in this case advantageously result in a reduction of the capacitance Ce of the capacitor arrangement as well as a reduction of the resulting stray capacitances Cs.
- AC voltage source generates the output voltage at the resonant frequency of the resonant circuit.
- the output voltages of the AC power sources can be generated with a phase shift of 180 °. Further, an amplitude of the output voltage (s) may be selected such that the one generated by the transformer (s)
- Excitation voltage (s) has a desired amplitude.
- an energy for exciting the electroluminescent pigments is reduced in an advantageous manner.
- the resonant frequency corresponds to a high excitation frequency, the excitation can nevertheless take place with a device which has a low space requirement.
- an excitation voltage has an amplitude of at most 3 kV. If excitation voltages are generated by two transformers, an amplitude of the individual excitation voltages can amount to a maximum of 1.5 kV.
- the further excitation radiation may in particular be an optical radiation, preferably a UV radiation or an IR radiation.
- the excitation field and the further excitation radiation can be generated such that they have the same spatial sections of the value or
- electroluminescent pigment in addition to the electroluminescent properties also have photoluminescent properties that allow the
- the excitation field is generated only when an optical feature excited by the further excitation radiation has been detected.
- the generation of the excitation voltage occurs only when one through the other
- Excitation radiation excited optical feature was detected.
- the Excitation voltage and thus the excitation field is therefore generated only after the time of the further excitation radiation.
- electroluminescent pigment also has photoluminescent properties in addition to the electroluminescent properties. Namely, in this case, the detection of the optical characteristic ensures that an electroluminescent pigment is contained in the value or security document. Preferably, a spatial portion of the value or security document can be determined in which the pigment is arranged. This subsequently enables a targeted excitation of the electroluminescent properties. At the same time, operational reliability is increased since it can be ruled out that spatial sections of the security or value document are exposed to the excitation field, which does not
- electroluminescent pigments For example, plasma formation and / or breakdown that would occur when portions of the security document with a hologram or security threads are exposed to the excitation field can be avoided.
- FIGURE shows a schematic block diagram of a device according to the invention.
- FIG. 1 shows a schematic block diagram of a device 1 according to the invention.
- the device comprises a first module 2a and a second module 2b.
- a module 2a, 2b may in this case designate a structural unit which has, for example, a housing.
- Each module 2a, 2b comprises a transformer 3a, 3b. Furthermore, each module 2a, 2b comprises an electrode 4a, 4b. Furthermore, each module 2a, 2b comprises optical elements 5a, 5b, which are designed and arranged such, radiation 6, which of a
- each module 2a, 2b comprises such a detection device 8a, 8b.
- each module 2a, 2b a control and evaluation 1 1 a, 1 1 b on.
- an AC voltage source which is electrically connected to the transformer 3a of the first module 2a and the transformer 3b of the second module 2b, wherein the transformers 3a, 3b are electrically connected in parallel to each other.
- the AC voltage source is connected to the transformer 3b of the second module 2b, that an input voltage of the transformer 3b of the second module 2b, that is, a voltage which drops across a primary winding, not shown, 180 ° out of phase with an input voltage of the transformer 3a of the first Module 2a is.
- the modules 2a, 2b are constructed similarly. This means that the geometrical arrangement of the elements of the modules 2a, 2b is equal, for example, to a geometric center of the modules 2a, 2b.
- the modules 2a, 2b are in this case arranged within the device 1 such that they include an import volume 12.
- the import volume 12 is in particular encompassed by an edge portion 13a of a housing of the first module 2a and an edge portion 13b of a housing of the second module 2b.
- Import volume 12 is arranged.
- the value or security document 14 can hereby be moved along the first direction z through the import volume, the first direction z being oriented in FIG. 1 into the plane of the drawing.
- the first direction z thus specifies a direction of movement of a movement path or an insertion direction for the value or security document 14.
- the electrodes 4a, 4b of the first module 2a and the second module 2b are at a predetermined first distance VA
- the first distance VA is in this case measured in a second direction y, wherein the second direction y is oriented perpendicular to the first direction z.
- the second direction y may in particular be perpendicular to surfaces of the previously explained edge sections 13a, 13b.
- a third direction x is also shown, wherein the directions x, y, z form a Cartesian coordinate system.
- the electrodes 4a, 4b are arranged in the region of the respective edge section 13a, 13b.
- the first distance VA can be a spacing of electrode surfaces of the electrodes 4a, 4b or a spacing of the geometric center points of the electrodes 4a, 4b.
- the further distance LA can in this case be, for example, a distance from geometric center points of the electrodes 4a, 4b or from geometric center points of the electrode surfaces of the electrodes 4a, 4b.
- a first resonant circuit is formed by a secondary inductance of the
- Transformer 3a of the first module 2a a capacitance of the electrode assembly of the electrodes 4a, 4b, a winding capacity of a secondary winding of
- Resonance resonant circuits are excited with their resonant frequency greater than or equal to 80 kHz.
- an electric excitation field 17 which has a proportion in the third direction x, is formed between the electrodes 4a, 4b. These portions in the third direction x excite the electroluminescent pigments 7 of the value or security document 14.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Credit Cards Or The Like (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013205048.8A DE102013205048A1 (en) | 2013-03-21 | 2013-03-21 | Device and method for authenticating a value or security document |
PCT/EP2014/055579 WO2014147166A1 (en) | 2013-03-21 | 2014-03-20 | Device and method for verifying the authenticity of a document of value or security document |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2976755A1 true EP2976755A1 (en) | 2016-01-27 |
EP2976755B1 EP2976755B1 (en) | 2022-01-05 |
Family
ID=50349606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14712261.8A Active EP2976755B1 (en) | 2013-03-21 | 2014-03-20 | Device and method for verifying the authenticity of a document of value or security document |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2976755B1 (en) |
CN (1) | CN105051797B (en) |
DE (1) | DE102013205048A1 (en) |
WO (1) | WO2014147166A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017211104B3 (en) * | 2017-06-29 | 2018-10-18 | Bundesdruckerei Gmbh | Method and device for verifying an electroluminescent security feature in a value or security document using additional light radiation |
JP6843991B2 (en) * | 2018-01-11 | 2021-03-17 | 三菱電機株式会社 | Capacitance detector |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663573A (en) * | 1995-03-17 | 1997-09-02 | The Ohio State University | Bipolar electroluminescent device |
DE102008047636A1 (en) * | 2008-09-17 | 2010-03-25 | Bundesdruckerei Gmbh | Device for authenticity examination of safety document, has sensor unit, which has suggestion module, condenser system and detector unit, where safety document is moved by sensor unit |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU1729783A (en) * | 1982-08-03 | 1984-02-09 | Diver, John | Coin testing |
US4633141A (en) * | 1985-02-28 | 1986-12-30 | Motorola, Inc. | Low voltage power source power inverter for an electroluminescent drive |
AT400645B (en) | 1993-03-25 | 1996-02-26 | Kurz Martin | CONTROL (ENERGY SUPPLY) OF ELECTROLUMINESCENT FILMS |
US5899313A (en) * | 1996-11-14 | 1999-05-04 | Pratt; George W. | Device and method for currency validation |
BR9812917A (en) * | 1997-10-13 | 2000-11-28 | Magna Reflex Holding Gmbh | Lighting device |
CA2261081C (en) * | 1999-02-01 | 2006-05-09 | Cashcode Company Inc. | Sensor for evaluating dielectric properties of specialized paper |
AU2001295520A1 (en) * | 2000-08-31 | 2002-03-13 | Bundesdruckerei Gmbh | A certified paper discriminating apparatus |
DE10122783A1 (en) * | 2001-03-26 | 2003-09-04 | Plaas Link Andreas | Verification method for verifying valuable documents has electromagnetically active structure |
WO2002080117A2 (en) * | 2001-03-26 | 2002-10-10 | Andreas Plaas-Link | Verification method |
DE10248954A1 (en) * | 2002-10-21 | 2004-04-29 | Giesecke & Devrient Gmbh | Security element for ID and value documents |
KR100816583B1 (en) * | 2005-04-13 | 2008-03-24 | 마쯔시다덴기산교 가부시키가이샤 | Paper money discriminating device |
CN101341518A (en) * | 2005-12-22 | 2009-01-07 | 皇家飞利浦电子股份有限公司 | Security element and methods for manufacturing and authenticating the same |
RU2010151772A (en) * | 2010-12-16 | 2012-06-27 | Гизеке Унд Девриент Гмбх (De) | DEVICE FOR DETECTING ELECTRIC CONDUCTING ELEMENT |
-
2013
- 2013-03-21 DE DE102013205048.8A patent/DE102013205048A1/en not_active Withdrawn
-
2014
- 2014-03-20 WO PCT/EP2014/055579 patent/WO2014147166A1/en active Application Filing
- 2014-03-20 EP EP14712261.8A patent/EP2976755B1/en active Active
- 2014-03-20 CN CN201480016709.9A patent/CN105051797B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663573A (en) * | 1995-03-17 | 1997-09-02 | The Ohio State University | Bipolar electroluminescent device |
DE102008047636A1 (en) * | 2008-09-17 | 2010-03-25 | Bundesdruckerei Gmbh | Device for authenticity examination of safety document, has sensor unit, which has suggestion module, condenser system and detector unit, where safety document is moved by sensor unit |
Non-Patent Citations (1)
Title |
---|
See also references of WO2014147166A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105051797A (en) | 2015-11-11 |
DE102013205048A1 (en) | 2014-09-25 |
WO2014147166A1 (en) | 2014-09-25 |
CN105051797B (en) | 2018-08-10 |
DE102013205048A8 (en) | 2014-11-13 |
EP2976755B1 (en) | 2022-01-05 |
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