WO1999041710A1 - Procede et dispositif de verification pour controler l'authenticite de marques d'authenticite - Google Patents

Procede et dispositif de verification pour controler l'authenticite de marques d'authenticite Download PDF

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Publication number
WO1999041710A1
WO1999041710A1 PCT/EP1998/000793 EP9800793W WO9941710A1 WO 1999041710 A1 WO1999041710 A1 WO 1999041710A1 EP 9800793 W EP9800793 W EP 9800793W WO 9941710 A1 WO9941710 A1 WO 9941710A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiation
authenticity
feature
color
wavelength ranges
Prior art date
Application number
PCT/EP1998/000793
Other languages
German (de)
English (en)
Inventor
Uli Kress
Rudolf M�LLER
Herbert Schwarz
Original Assignee
Hkr Sensorsysteme Gmbh
Schwarz Druck Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hkr Sensorsysteme Gmbh, Schwarz Druck Gmbh & Co. Kg filed Critical Hkr Sensorsysteme Gmbh
Priority to PCT/EP1998/000793 priority Critical patent/WO1999041710A1/fr
Priority to CNB988138492A priority patent/CN1139047C/zh
Publication of WO1999041710A1 publication Critical patent/WO1999041710A1/fr

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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
    • G07D7/08—Acoustic waves

Definitions

  • the present invention relates to a test method and a test device for checking the authenticity of authenticity marks, such as are provided as color marks on objects, in particular on documents, securities, and the like.
  • test device It is accordingly an object of the present invention to find an operating method for such a test device which does not require any particularly complicated optics and can be implemented in a simple manner with conventional electronic components.
  • This device should preferably be light in weight, so that it can also be used in particular as a portable test device.
  • the invention is based on the finding that by in each case only narrow-band irradiation / excitation of the (color of) the authenticity mark in at least two mutually different (at most slightly overlapping) wavelength ranges with respective middle wavelengths which are spaced apart at a predeterminable wavelength distance and which characterize intensity values of the characteristic for this color Spectrum curve, ie the dependence of the intensity on the wavelength, or for the respective mean value of the respective narrow-band wavelength range, can be determined. From measurements in several, at least two such adjacent narrow wavelength ranges, a respective slope value of the characteristic spectrum curve of this color mentioned can then be determined and checked as an authenticity feature.
  • the simplification on which the invention is based can be used in the invention to provide individual selective transmission wavelength ranges and to use detectors which are not necessarily wavelength-selective.
  • the test device according to the invention is designed or is to be operated in such a way that the emission of radiation of different narrow wavelength ranges provided here is only time-multiplexed, i.e. according to a preferred variant of the test device. never occurs simultaneously for the different wavelength ranges.
  • different radiation sources preferably luminescent diodes, which emit radiation of only narrow wavelength ranges at different wavelengths, are used, which can be switched in a simple manner in a time-multiplexed manner.
  • a detector device can be used which does not have to have a wavelength-selective property. It is even advantageous to use a non-selective detector that is equally sensitive to all of the wavelength ranges provided. This saves corrections.
  • the test device working according to the invention is designed such that it carries out time-multiplexed transmission in selected, predetermined, narrow wavelength ranges and, with the detector arrangement, that of the irradiated authenticity feature at the respective time If (again) outgoing radiation falling into the detector is determined quantitatively, the respective steepness of the measurement signal curve can be reliably checked as a predefinable authenticity feature. This can be carried out with the invention with correspondingly low technical outlay. With the invention, printing inks that are different from one another, ie a real color with the authenticity feature, can be distinguished from another color that does not have this authenticity feature. This also applies if the broadband detector used in the invention has integral detection properties for both colors for the entire spectral range detected.
  • FIG. 1 and la each show a schematic diagram of a device according to the invention.
  • FIG. 2 shows a curve diagram of spectral reflection values of (printing) colors.
  • Figure 3 shows a scheme for local distribution of
  • Figure 4 shows an example of the optics of the device.
  • FIG. 1 shows the principle of a structure and the mode of operation of a test device 10 according to the invention in the most general form.
  • 1 designates a control unit with which time-division multiplexing can optionally control one of the two transmitters 2 ⁇ and 2 2 for emitting radiation.
  • the transmitter 2 ⁇ When the transmitter 2 ⁇ is activated, it emits narrowband radiation ai.
  • the transmitter 2 2 When the transmitter 2 2 is activated, the radiation a 2 is emitted from it.
  • the two radiations ai and a 2 differ in the mean wavelength value of their respective narrow (at most insignificantly partially overlapping) wavelength ranges.
  • the two wavelength ranges have one for the construction of the Test device predeterminable distance from each other.
  • semiconductor luminescent diodes are particularly suitable which have relatively narrow wavelength ranges of their emission, which are available in a corresponding selection and which can be operated easily in a time-multiplexed manner, ie in a time-selective manner.
  • the radiations ai and a 2 are both aligned to one and the same surface element of an authenticity mark 3.
  • Radiation b is emitted by this authenticity mark 3 both when irradiating ai and when irradiating a 2, which radiation is collected by a detector 4.
  • this radiation b has a different wavelength (different wavelength range).
  • the detector 4 since the detector 4 is broadband, regardless of whether irradiation ai or a 2 has occurred, it provides a respective detector signal which corresponds to the detected intensity of the radiation b received (at the corresponding time).
  • the output signals of the detector 4 go to an evaluation unit 5. This is communicated via the connection 6 from the control unit 1 which transmitter 2 or 2 2 is emitting radiation at the moment, namely at the time the detector signal of the detector 4 is received in the evaluation unit 5 . In this way, the received signal of the detector 4 that came to the evaluation 5 at a specific point in time can be assigned to the respective transmission radiation a x or a 2 .
  • Connection 6 of FIG. 1 can be omitted if only two transmitters (2 1 and 2 2 ) are assigned to each detector (4).
  • FIG. 1 can also be equipped with further wavelength-selective transmitters (still other wavelength ranges) such as the transmitters 2 X or 2 2 be, which is also time-division multiplex irradiate the surface element of the authenticity mark and also provide 'for emitting radiation b occasion.
  • This radiation then received in the detector 4 can also be assigned to the respective transmission wavelength range by means of the signal of the line 6.
  • the invention allows the instantaneous detector signal to be unambiguously assigned to a specific wavelength range (the radiation ai or a 2 or .7) due to the time-division multiplex operation in the evaluation unit 5.
  • the measurement signals of the detectors are evaluated by the evaluation unit 5 according to their DC component and their AC component in the signal. From this, the courses in the spectrum of the radiation b in the relevant wavelength range can be assessed. On the basis of these dynamically recorded courses, a result-dependent output takes place through an output unit 7.
  • FIG. 2 shows the respective degree of reflection for three colors, depending on the wavelength.
  • curve 21 is the one that belongs to a specially selected black color that can be used as a selected authenticity feature.
  • a second curve 22 of a corresponding second color is also specified.
  • Curve 222 is the corresponding curve for another (usual) printing ink.
  • the mean wavelengths 20 ⁇ m , 20 2m of the narrow wavelength ranges 20 ⁇ and 20 2 of the radiations ai and a 2 are marked. It can be seen from FIG.
  • a test device can be operated in the ultraviolet, visible and / or infrared spectral range, adapted to the color of the authenticity feature.
  • the individual transmitters 2 ⁇ , 2 2 , ... of the transmitter arrangement 2 are arranged as spatially as possible adjacent in favor of a simplified structure with regard to the optical paths.
  • a detector 4 which consists of several individual detectors 4 ⁇ , 4 2 , ..., a similar structure is advantageous.
  • FIG. 1 a Another advantageous variant of the test device according to FIG. 1 is one according to FIG. 1 a with a detector arrangement 4 ′ which is selectively sensitive to the individual wavelength ranges 20 ⁇ , 20 2 , ... of the radiation ai, a 2 , ..., namely instead of not being selective working detector arrangement 4 of Figure 1.
  • This selective detector arrangement includes, for example, a corresponding number of individual selective detectors 4' ⁇ , 4 ' 2 , ..., which individually send their signal to the evaluation unit 5.
  • the The selective radiations a x , a 2 are emitted simultaneously.
  • test result which can be obtained by means of a test device operating according to the invention, at. Acknowledgment of authenticity ' a signal to a unit
  • peripheral devices such as a printing unit
  • This unit 7 can be used to prepare the results of the evaluation for a
  • Control, signaling or alarming via e.g. electrical, optical and / or acoustic outputs can be formed.
  • the evaluation results can also be saved as data and / or forwarded to central data processing.
  • FIG. 3 shows (as an example) two authenticity stamps 30 ⁇ , 30 2 with authenticity feature according to the invention, which are affixed in terms of area to one another on a ticket 32, for example.
  • a test device 10 when a ticket of this type is inserted or pushed through (arrow 35) through the optical part 11 of the test device, the number of these authenticity stamps corresponding to the number one after the other (here two) approving signals from the evaluation unit 5, and only if these authenticity tags are authentic,
  • these two authenticity marks 30 ⁇ , 30 2 also differ from one another.
  • the slopes of the spectrum curves 21, 22 (see FIG. 2) to be determined as the specified authenticity features can be selected differently for these two (and also for further) authenticity marks.
  • the printing inks as an authenticity feature can be on, such as paper, plastic, textile ⁇ or the like is provided and / or in the carrier material. As described, they can be distributed as any geometric pattern and / or also (more or less) over the entire surface on / over the object. For example, the paper or the like can also be impregnated with the color bearing the color feature.
  • FIG. 4 shows (for example in addition to FIGS. 1 and 3) an example of the mutual arrangement of a transmitter arrangement 2 and a detector arrangement 4 and the authenticity mark 3 to be placed when the authenticity check is carried out.
  • the directional radiation a of the respective wavelength range strikes the authenticity mark 3 on.
  • the radiation b to be detected, which arrives in the detector arrangement 4, emanates from this.
  • the other device details of this device for the authenticity check correspond to those which have already been described and explained for FIG. 1.
  • the invention has been described above for radiation b reflected by the authenticity mark.
  • the method and the corresponding test device in its described variants can also work with radiation (b ') transmitted by the authenticity feature.
  • the authenticity feature is required when working with transmission 11

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

L'invention concerne un proc�d� et un dispositif pour v�rifier des marques d'authenticit�. La caract�ristique d'authenticit� de la marque d'authenticit� est repr�sent�e par une valeur de la pente, dans une plage de longueur d'onde pr�d�termin�e, de la courbe spectrale de la caract�ristique chromatique servant de caract�ristique d'authenticit�. Les valeurs de mesure n�cessaires � la d�termination de cette valeur de pente sont d�termin�es et �valu�es par exposition de la marque d'authenticit� � des rayons (a¨1?, a¨2?) de diff�rentes plages de longueur d'onde. De pr�f�rence, l'exposition aux rayons des diff�rentes plages de longueur d'onde s'effectue de fa�on multiplex�e dans le temps.
PCT/EP1998/000793 1998-02-12 1998-02-12 Procede et dispositif de verification pour controler l'authenticite de marques d'authenticite WO1999041710A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP1998/000793 WO1999041710A1 (fr) 1998-02-12 1998-02-12 Procede et dispositif de verification pour controler l'authenticite de marques d'authenticite
CNB988138492A CN1139047C (zh) 1998-02-12 1998-02-12 对真实性标记进行检验的检验方法和检验装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/000793 WO1999041710A1 (fr) 1998-02-12 1998-02-12 Procede et dispositif de verification pour controler l'authenticite de marques d'authenticite

Publications (1)

Publication Number Publication Date
WO1999041710A1 true WO1999041710A1 (fr) 1999-08-19

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Application Number Title Priority Date Filing Date
PCT/EP1998/000793 WO1999041710A1 (fr) 1998-02-12 1998-02-12 Procede et dispositif de verification pour controler l'authenticite de marques d'authenticite

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CN (1) CN1139047C (fr)
WO (1) WO1999041710A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102456244A (zh) * 2010-10-22 2012-05-16 黄腾玉 智能型金融事务机
US10808438B2 (en) 2016-04-15 2020-10-20 Larson Manufacturing Company Of South Dakota, Inc. Door assembly for selectively interlocking opposing doors

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020652A1 (de) 1980-05-30 1981-12-10 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Wertpapier mit echtheitsmerkmalen in form von lumineszierenden substanzen und verfahren zur aenderung derselben
US4526466A (en) * 1983-09-01 1985-07-02 Rca Corporation Technique for verifying genuineness of authenticating device
US5289547A (en) * 1991-12-06 1994-02-22 Ppg Industries, Inc. Authenticating method
US5304813A (en) * 1991-10-14 1994-04-19 Landis & Gyr Betriebs Ag Apparatus for the optical recognition of documents

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020652A1 (de) 1980-05-30 1981-12-10 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Wertpapier mit echtheitsmerkmalen in form von lumineszierenden substanzen und verfahren zur aenderung derselben
US4526466A (en) * 1983-09-01 1985-07-02 Rca Corporation Technique for verifying genuineness of authenticating device
US5304813A (en) * 1991-10-14 1994-04-19 Landis & Gyr Betriebs Ag Apparatus for the optical recognition of documents
US5289547A (en) * 1991-12-06 1994-02-22 Ppg Industries, Inc. Authenticating method

Also Published As

Publication number Publication date
CN1286781A (zh) 2001-03-07
CN1139047C (zh) 2004-02-18

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