WO2002076760A1 - Card true/false decision apparatus - Google Patents
Card true/false decision apparatus Download PDFInfo
- Publication number
- WO2002076760A1 WO2002076760A1 PCT/JP2002/001345 JP0201345W WO02076760A1 WO 2002076760 A1 WO2002076760 A1 WO 2002076760A1 JP 0201345 W JP0201345 W JP 0201345W WO 02076760 A1 WO02076760 A1 WO 02076760A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- card
- light
- authenticity
- hologram seal
- reflected
- Prior art date
Links
- 238000004364 calculation method Methods 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 27
- 239000004065 semiconductor Substances 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 15
- 239000011295 pitch Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 3
- 238000007619 statistical method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
- G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
- G03H1/30—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique discrete holograms only
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
Definitions
- the present invention relates to a card authenticity determination device for determining the authenticity of a card having a holo dram on which an image based on a lattice pattern is formed.
- a hologram seal 2 is provided on a card 1 such as a credit card.
- a card 1 such as a credit card.
- an image 4 based on the lattice pattern 3 is formed on the hologram seal 2 .
- the hologram seal 2 is used to judge the authenticity of the card 1.
- the authenticity of Card 1 is
- a parallel light beam as a measurement light beam is projected on the hologram seal 2, and the reflection based on the measurement light beam reflected by the hologram seal 2 is performed.
- Card authenticity determination devices are being developed based on the peak intensity of the light intensity distribution of the diffracted light, the position of its center of gravity, its spread width, the number of peaks, etc. (for example, Japanese Patent Application No. 2000-110). 806).
- a card 1 in which a plurality of images are formed by changing the direction in which the diffraction gratings forming the grating pattern 3 are formed in order to prevent forgery.
- Fig. 2 shows a rectangular hologram seal 2 on which three types of images are formed based on, for example, grating patterns 5 to 7 composed of diffraction gratings having different pitches.
- FIG. 3 (a) shows one side 2 of the rectangular hologram seal 2.
- An image 8 based on a grating pattern 5 composed of diffraction gratings having a pitch P1 in which diffraction gratings are formed in a direction orthogonal to a is shown
- FIG. 3 (b) shows a diffraction pattern in which the grating formation direction is the grating pattern 5.
- FIG. 3 (c) shows the diffraction grating.
- the grating pattern 7 is composed of diffraction gratings whose arrangement direction is the same as that of the lattice patterns 5 and 6 and whose pitch width is smaller than the pitch P 1 but wider than the pitch P 2.
- Based image 10 Three images 8-1 0 is superimposed Luo, holo Gras Mushiru 2 shown in FIG. 2 is formed. The appearance of the images 8 to 10 changes depending on the condition of the incident light beam incident on the hologram seal 2.
- the arrows indicate the direction in which the diffraction gratings are formed, and the direction in which each diffraction grating extends is orthogonal to the direction in which the diffraction gratings are formed.
- the hologram seal 2 When a parallel light beam is projected on this kind of hologram seal 2, the hologram seal 2 generates reflected diffraction light R1 to R3 based on the parallel light beam as shown in FIG. L is the line sensor It is. (For example, refer to Japanese Patent Application No. 2000-150574).
- the reflected diffracted light R 1 is caused by, for example, the grating pattern 5
- the reflected diffracted light R 2 is caused by, for example, the grating pattern 6
- the reflected diffracted light R 3 is caused by, for example, the grating pattern 7.
- Fig. 5 shows a rectangular hologram seal 2 in which three types of images are formed based on, for example, three lattice patterns 11 to 13, and Fig. 6 (a) shows a rectangular hologram seal.
- An image 14 based on the grating pattern 11 in which the diffraction gratings are formed in a direction perpendicular to the side 2a of Fig. 2 is shown in Fig. 6 (b).
- Fig. 6 shows an image 15 based on the grid pattern 12 in which the diffraction gratings are formed diagonally to the right and at 45 degrees.
- Figure 16 shows an image 16 based on a grating pattern 13 in which diffraction gratings are arranged in the vertical direction, and these three images 14 to 16 are superimposed to form the hologram seal 2 shown in Figure 5. .
- the appearance of the images 14 to 16 changes depending on the condition of the incident light beam entering the hologram seal 2.
- the arrows indicate the direction in which the diffraction gratings are formed, and the direction in which each diffraction grating extends is orthogonal to the direction in which the diffraction gratings are formed.
- the hologram seal 2 When a parallel light beam is projected on this kind of hologram seal 2, the hologram seal 2 generates reflected diffracted light Rl, to R3 based on the parallel light beam as shown in FIG.
- the reflected diffracted light R l is caused by, for example, the grating pattern 15, and the reflected diffracted light R 3, is caused by, for example, the grating pattern 16.
- three grating patterns 17 to 19 having a predetermined pitch width and a diffraction grating in which the direction in which the diffraction grating extends are different, for example, approximately every 45 degrees are periodically arranged.
- the direction in which the diffraction grating of the grating pattern 17 extends is inclined, for example, by about 45 degrees with respect to the direction in which the diffraction gratings of the grating patterns 18 and 19 extend, so that the diffraction of the grating pattern 18 and the diffraction of the grating pattern 19 are different.
- the directions in which the grids extend are inclined at about 90 degrees from each other.
- Reference numeral 20 denotes a pattern in which no diffraction grating is formed.
- the side width of these rectangular lattice patterns has a fine structure of, for example, about 20 microns.
- each of the three types of grid patterns 17 to 19 is formed.
- the diffraction grating generates three reflected diffracted lights R 1 ′′, R 2 ′′, and R 3 ′′.
- the symbol R 4 ′′ indicates specularly reflected light due to the pattern 20.
- the reflected diffracted light Rl is, for example, due to the grating pattern 17
- the reflected diffracted light R2 is, for example, due to the grating pattern 18,
- the reflected diffracted light R3 is, for example, This is due to the grid pattern 19.
- Each of the reflected diffracted lights R l “, R 2", R 3 " is detected by a line sensor L as a light receiving element via a Fourier transform lens 10, and each element L of the line sensor L is detected. Based on the received light output of a, if the presence or absence of the light distribution of each reflected diffracted light R l ", 2 ' ⁇ R 3", the peak intensity of the light distribution, and the spread width are calculated by calculation means (not shown), The authenticity can be determined.
- reference numeral 9a denotes a semiconductor laser
- reference numerals 9b and 9b denote collimating lenses that convert a divergent light beam emitted from the semiconductor laser 9a into a parallel light beam.
- each of the lattice patterns 17 to 19 since each of the lattice patterns 17 to 19 has a long-period structure and a short-period structure, each of the lattice patterns 1 ′ 7 ⁇ 19 itself acts as a diffraction grating, generating fine reflected / diffraction light in the reflected / diffracted light.
- hologram seals 2 As described above, there are many types of hologram seals 2 depending on the type of the card, and the diffracted light reflected by projecting the measurement light onto the hologram seal 2 differs depending on the type of the hologram seal 2. It is formed in a different manner in the direction. Therefore, a card authentication device that can judge the authenticity of multiple types of cards with only one device, that is, a card authentication device that can perform appropriate judgment without being affected by differences in hologram seals Is required.
- the received light signal of each element La of the sensor L greatly changes due to a slight positional shift of a large number of spot-like diffracted lights r.
- the peak and width of the light intensity distribution as the whole reflected diffraction light cannot be detected on average, and the authenticity of the card cannot be objectively determined.
- the present invention has been made in view of the above circumstances, and a first object of the present invention is to provide a card authenticity determination device that can handle a plurality of types of holograms with one device.
- a second object of the present invention is to provide a card having a hologram seal in which a lattice pattern having a short-period structure and a long-period structure is arranged at a fixed period, and which can objectively determine the authenticity of the card.
- An object of the present invention is to provide a device for determining authenticity.
- a card authenticity determination apparatus for determining the authenticity of a card provided with a predetermined hologram seal corresponding to the type of the card based on the hologram seal.
- a measurement light projection system for projecting measurement light onto the hologram seal, an area sensor for receiving reflected diffraction light of the measurement light beam reflected by the hologram seal, and an area sensor.
- a plurality of judgment operation means for performing an operation according to the type to judge the authenticity of the card; and a selection means for selecting any one of the plurality of judgment operation means.
- the card authenticity determination device is the device according to claim 1, wherein the hologram seal is configured such that the reflected diffracted light is formed from a number of small spot-like diffracted light based on a diffraction grating.
- a plurality of types of grating patterns having different arrangement directions of the diffraction gratings are arranged at a constant period, and a regular reflection pattern is formed at a constant period. It is characterized in that the authenticity of a card having a hologram seal formed with a lattice pattern having a short-period structure and a long-period structure and a regular reflection pattern is determined.
- the card authenticity determination device is the device according to claim 2, wherein the determination calculation unit determines the authenticity of the card with reference to regular reflection light based on the regular reflection pattern. This is the feature.
- a card authentication apparatus for measuring a predetermined direction of a hologram seal on a card on which a plurality of types of grating patterns having different diffraction gratings are periodically arranged alternately.
- a measuring light projection system for condensing and projecting a constant light beam, a light receiving element for receiving reflected and diffracted light of the measuring light beam reflected and diffracted on the hologram seal, and authenticating the card based on a light receiving signal of the light receiving element.
- Determining means for determining.
- the card authentication device is capable of projecting a measurement light beam.
- a plurality of types of grating patterns in which the arrangement directions of the diffraction gratings are different from each other are formed at regular intervals so that the reflected diffraction light based on the diffraction grating is formed from a large number of small spot-like diffraction lights based on the diffraction grating.
- a card authenticity determination device for determining the authenticity of a card having a hologram seal,
- a measuring light projection system for converging and projecting a measuring light beam onto the hologram seal from a predetermined direction; a light receiving element for receiving reflected and diffracted light of the measuring light beam reflected and diffracted on the hologram seal; Determining means for determining the authenticity of the card based on the signal.
- the card authenticity determination device is the device according to claim 4 or claim 5, wherein the total occupied area of the grid pattern present in the irradiation area of the measurement light beam is a longest period grid pattern.
- the area is not less than the area defined by the above and is not more than 2 to 3 times the area.
- a regular reflection pattern is formed on the hologram seal at regular intervals.
- FIG. 1 is a diagram showing an example of a card to which a conventional hologram seal is attached.
- FIG. 2 is a diagram showing an example of the hologram seal of the card shown in FIG.
- FIG. 3 shows an example of the grid pattern of the hologram seal shown in Fig. 2.
- FIG. 4 is a diagram showing reflected diffraction light by the grating pattern shown in FIG.
- FIG. 5 is a diagram showing another example of the hologram seal.
- FIG. 6 is a diagram showing a grid pattern of the hologram seal shown in FIG.
- FIG. 7 is a diagram showing the reflected diffraction light by the grating pattern shown in FIG.
- FIG. 8 is a view showing still another example of the hologram seal.
- FIG. 9 is a diagram showing the diffraction light reflected by the grating pattern of the hologram seal.
- FIG. 10 is a diagram showing spot-like diffracted light by the lattice pattern of the hologram seal shown in FIG.
- FIG. 11 is a diagram showing an appearance of a card authenticity determining apparatus according to a first embodiment of the present invention.
- FIG. 12 is a diagram showing a main part circuit block of the card authenticity determination device shown in FIG.
- FIG. 13 is a diagram showing the main optical system of the card authentication apparatus shown in FIG.
- FIG. 14 is a diagram for explaining the operation of the first determination operation device for the circuit block shown in FIG.
- FIG. 15 is a diagram for explaining the operation of the second decision operation device of the circuit block shown in FIG.
- Fig. 16 shows the operation of the third decision processor in the circuit block shown in Fig. 12. It is a figure for explaining a work.
- FIG. 17 is a perspective view showing a box of the device for judging authenticity of a card according to the second embodiment of the present invention.
- FIG. 18 is a plan view of an optical system showing a measurement light projection system and a diffracted reflected light detection system installed in the box shown in FIG.
- FIG. 19 is a front view of the optical system showing the measuring light projection system and the diffracted and reflected light detection system installed in the box shown in FIG.
- FIG. 20 is an explanatory diagram of an irradiation area on the hologram seal of the measurement light beam projected by the measurement light projection system shown in FIG.
- FIG. 21 is an explanatory diagram of the light intensity distribution of the reflected diffracted light on the line sensor.
- FIG. 11 is a perspective view showing a box according to the first embodiment of the card authentication device of the present invention.
- reference numeral 21 denotes a box of a card authentication device.
- the box 21 is provided with an entrance 22 of the card 1, a judgment result display panel 23, and a switching switch 24, and the measurement light for the hologram seal 2 is provided inside the box 21.
- a measurement light projection system for projecting light a detection system for detecting reflected light reflected from the hologram seal 2, and a circuit unit for controlling the operation of card authenticity, which will be described later.
- the measurement light projection system is a semiconductor laser, as shown in Figs. 12 and 13.
- the diverging light from the semiconductor laser 25a is converted into a parallel light beam by the collimating lens 25b, which is roughly composed of a laser 25a and a collimating lens 25b.
- a measurement light beam P composed of a parallel light beam is projected onto the hologram seal 2 while maintaining the incident angle 0.
- reference numeral 27 denotes a Fourier transform lens which forms a part of the detection system.
- the GramSeal 2 is placed at the front focal point f of the Fourier transform lens 27, and the rear focal point f 'of the Fourier transform lens 27 has an area sensor 28 that also forms the detection system. Be placed.
- the circuit section includes a switch circuit 29 which is switched by a switching switch 24, first to third determination operation means 30 to 32, and a display 33.
- the changeover switch 29 selectively operates the three judgment calculation means 30 to 32. For example, when it is desired to judge the authenticity of a certain kind of card, the switching circuit 24 is operated by operating the switching switch 24 that activates the judgment operation means 30 to 32 corresponding to this type. Let it. In FIG. 12, the judgment operation means 31 is selected.
- the first determination operation means 30 corresponds to the hologram seal 2 shown in FIG. Diffracted reflected light R obtained by the photoelectric output based on the diffracted reflected light R1, R2, and R3 detected by the number of horizontal lines (or may be one horizontal line) of the address im of the area sensor 28 1, the light intensity distribution co of R2, R3, the peak intensity Pe of the coR, the position of each center of gravity G1 to G3, and the width of each spread W1 to W3, using the statistical method By performing the calculation, it is determined whether the card is a real card or a counterfeit card, and the result of the determination is output.
- the second judgment calculation means 31 corresponds to the hologram seal 2 shown in FIG. 5, and the diffraction reflection detected by the number of vertical lines of the area sensor 28 [m] (or one vertical line) may be used. Peak intensity Pe of the light intensity distribution of the diffracted reflected light R1, R2, R3 'obtained by the photoelectric output based on the light Rl, R2, R3', and the position of the center of gravity Gl 'to G3', each spread width is calculated using a statistical method to determine whether it is a genuine card or a counterfeit card, and the result of the determination is output. It has become.
- the diffracted reflected light R detected by the vertical line at the address jm of the area sensor 28 may be used.
- the envelope ⁇ R (ie, the light intensity distribution ⁇ R” of the diffracted reflected light R l ”, R 2”, and R 3 ”) obtained by the photoelectric output based on 1”, R 2 ”, and R 3”
- the waveform ⁇ r is due to the spot-like diffracted light r, and its envelope o) R “corresponds to the photoelectric output of the reflected diffracted light R l" to R 3 "due to the long-period structure.
- the third determination operation means 32 the light amount distribution R 4 "obtained by the photoelectric output based on the regular reflection light R 4" detected by one vertical line at the address ⁇ m 'of the area sensor 28 is obtained.
- the peak intensity P e " its center of gravity G 4", and its spread width W 4 " It can also be used to judge card authenticity.
- the judgment calculation means 3.2 outputs the judgment result after the judgment operation.
- the display 33 displays the judgment results of the judgment calculation means 30 to 32 on the display panel 23.
- judgment calculation means 30 to 32 for judging the authenticity of the card based on various holograms are provided, and these judgment calculation means 30 to 32 are provided according to the type of the card. Since switching is used, the authenticity of various cards can be determined by a single device.
- FIG. 17 is a perspective view showing a second embodiment of the card authenticity judging device according to the present invention, and reference numerals 20 and 20 denote boxes of the card authenticity judging device.
- the box 20 is provided with an entrance 21 1 ′ for the card 1, and a display panel 22 2 for displaying the authenticity of the card 1 is provided above the box 20. It is assumed that the hologram seal 2 of the card 1 has lattice patterns 17 to 19 and a pattern 20 shown in FIG.
- the card 1 is drawn into the box 20 'by card transport means (not shown), and the card 1 is automatically ejected when the authenticity is determined.
- the measuring light projection system 23 comprises a semiconductor laser 23 a, a focusing lens 23 ′, and a power.
- the focusing lens 23 b serves to convert the laser beam emitted from the semiconductor laser 23 a ′ into a measurement beam L ′ as a focusing beam and to project the beam onto the card 1.
- the reflected diffraction light detection system 24 is composed of a Fourier transform lens 24a and a line sensor 24b 'as a light receiving element.
- Card 1 is drawn into box 20, and is set to the front focal position f of Fourier transform lens 24 a,.
- the measurement light beam L ′ is incident on the hologram seal 2 as shown in FIGS. 18 and 19. It is projected on the mouth seal 2 with 0 being constant.
- a projection spot S ' is formed in a predetermined area of the hologram seal 2 as shown in an enlarged manner in FIG.
- the reflected and diffracted light Rl ", R2", R3 "by the projection spot S, is formed as shown in FIG.
- the irradiation area on the hologram seal 2 by the projection spot S is such that the total occupied area of the grid pattern existing in the irradiation area is equal to or larger than the area defined by the longest-period grid pattern 19, and It is desirable that the area be two to three times or less.
- each reflected diffracted light R1 " ⁇ R 3 " In the spot on the inner sensor 24b ', a fine diffraction phenomenon secondary to the period of the lattice pattern can be avoided, and as shown in FIG. 21, the line sensor 24b, The reflected diffracted light R 1 ”at can be brought close to the reflected diffracted light based on the Gaussian distribution G as a whole.
- the light beam projected onto the hologram seal 2 is not a parallel light beam, but is projected as a condensed light beam having a predetermined spread angle. For this reason, even if the light is separated into a plurality of spot lights depending on the irradiation area, each of the spot lights is assumed to be an image that is spread as compared with the case of projecting with a parallel light beam. Formed. Therefore, these spread spot images partially overlap each other, and the reflected and diffracted light as a whole can be converted into a light flux close to a Gaussian distribution.
- the light receiving signal output from each light receiving element 24 c of the line sensor 24 b is input to the judging means 25 ′.
- the judging means 25 ′ outputs, for example, the peak intensity of the light quantity distribution, the position of the center of gravity, The authenticity of the card 1 is determined by comparing it with an allowable value such as the spread width, and the result of the determination is displayed on the display panel 22.
- one unit can handle a plurality of types of holograms.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Theoretical Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Holo Graphy (AREA)
- Credit Cards Or The Like (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002416295A CA2416295A1 (en) | 2001-03-27 | 2002-02-18 | Card true/false decision apparatus |
US10/416,414 US20040031849A1 (en) | 2001-03-27 | 2002-02-18 | Card true/false decision apparatus |
EP02700592A EP1300258A1 (en) | 2001-03-27 | 2002-02-18 | Card true/false decision apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001089615A JP2002283775A (ja) | 2001-03-27 | 2001-03-27 | カードの真贋判定装置 |
JP2001-89615 | 2001-03-27 | ||
JP2001-177973 | 2001-06-13 | ||
JP2001177973A JP2002366891A (ja) | 2001-06-13 | 2001-06-13 | カード真贋判定装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002076760A1 true WO2002076760A1 (en) | 2002-10-03 |
Family
ID=26612158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/001345 WO2002076760A1 (en) | 2001-03-27 | 2002-02-18 | Card true/false decision apparatus |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1300258A1 (ja) |
KR (1) | KR20030017977A (ja) |
CA (1) | CA2416295A1 (ja) |
TW (1) | TW581973B (ja) |
WO (1) | WO2002076760A1 (ja) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57178895A (en) * | 1981-04-16 | 1982-11-04 | Landis & Gyr Ag | Document with forgery preventive layer and method of inspecting its truth or falsehood |
JPH02147546A (ja) * | 1988-08-12 | 1990-06-06 | Laurel Bank Mach Co Ltd | 紙葉類判別装置 |
JPH05266243A (ja) * | 1991-12-20 | 1993-10-15 | Matsushita Electric Ind Co Ltd | 情報メディアと情報メディア読取装置 |
JPH05289599A (ja) * | 1992-04-13 | 1993-11-05 | Dainippon Printing Co Ltd | コード部の転写方法と使用方法 |
JPH07304286A (ja) * | 1994-08-12 | 1995-11-21 | Dainippon Printing Co Ltd | ホログラムカード |
JPH07320014A (ja) * | 1994-05-27 | 1995-12-08 | Dainippon Printing Co Ltd | 情報記録媒体及びその製造方法 |
JPH11180079A (ja) * | 1997-12-25 | 1999-07-06 | Dainippon Printing Co Ltd | 情報記録媒体及びその認証方式 |
-
2002
- 2002-02-18 EP EP02700592A patent/EP1300258A1/en not_active Withdrawn
- 2002-02-18 KR KR1020027015835A patent/KR20030017977A/ko active IP Right Grant
- 2002-02-18 WO PCT/JP2002/001345 patent/WO2002076760A1/ja active IP Right Grant
- 2002-02-18 CA CA002416295A patent/CA2416295A1/en not_active Abandoned
- 2002-02-22 TW TW091103185A patent/TW581973B/zh not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57178895A (en) * | 1981-04-16 | 1982-11-04 | Landis & Gyr Ag | Document with forgery preventive layer and method of inspecting its truth or falsehood |
JPH02147546A (ja) * | 1988-08-12 | 1990-06-06 | Laurel Bank Mach Co Ltd | 紙葉類判別装置 |
JPH05266243A (ja) * | 1991-12-20 | 1993-10-15 | Matsushita Electric Ind Co Ltd | 情報メディアと情報メディア読取装置 |
JPH05289599A (ja) * | 1992-04-13 | 1993-11-05 | Dainippon Printing Co Ltd | コード部の転写方法と使用方法 |
JPH07320014A (ja) * | 1994-05-27 | 1995-12-08 | Dainippon Printing Co Ltd | 情報記録媒体及びその製造方法 |
JPH07304286A (ja) * | 1994-08-12 | 1995-11-21 | Dainippon Printing Co Ltd | ホログラムカード |
JPH11180079A (ja) * | 1997-12-25 | 1999-07-06 | Dainippon Printing Co Ltd | 情報記録媒体及びその認証方式 |
Also Published As
Publication number | Publication date |
---|---|
EP1300258A1 (en) | 2003-04-09 |
TW581973B (en) | 2004-04-01 |
KR20030017977A (ko) | 2003-03-04 |
CA2416295A1 (en) | 2002-12-02 |
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