WO2001080236A1 - Recording medium and manufacturing method - Google Patents

Recording medium and manufacturing method Download PDF

Info

Publication number
WO2001080236A1
WO2001080236A1 PCT/GB2001/001617 GB0101617W WO0180236A1 WO 2001080236 A1 WO2001080236 A1 WO 2001080236A1 GB 0101617 W GB0101617 W GB 0101617W WO 0180236 A1 WO0180236 A1 WO 0180236A1
Authority
WO
WIPO (PCT)
Prior art keywords
recording medium
authentication code
particulate matter
predetermined conditions
code
Prior art date
Application number
PCT/GB2001/001617
Other languages
French (fr)
Inventor
Roland Isherwood
Original Assignee
De La Rue International Limited
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 De La Rue International Limited filed Critical De La Rue International Limited
Priority to AU48527/01A priority Critical patent/AU4852701A/en
Publication of WO2001080236A1 publication Critical patent/WO2001080236A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/281—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs by changing the physical properties of the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy

Definitions

  • the invention relates to recording media and methods for manufacturing such media and in particular to a method of preventing fraudulent replication of such media.
  • US-A-5920628 describes a method of "fingerprinting" magnetic media by detecting remenant noise in a magnetic medium such as a computer program diskette or video tape and the like. This overcomes the problem of a separate label but in practice it is difficult to detect the remnant noise which is a very small ac magnetic variation, due to voids, inclusions crystal defects etc. which are intentionally designed out of most recording media.
  • US-A-5434917 describes the incorporation of randomly distributed ferrite particles in a plastic support of a credit card to constitute an authentication code.
  • the disadvantage of this is that it requires modification of the primary card substrate. Modification of the substrate can lead to a weakness in the flex properties which would be detrimental to the card's lifetime. Also the nature of the card format requires a single pass through the detection system hence the possibility of mis-reads.
  • US-A-4114032 describes the manufacture of documents such as bank notes, credit cards and the like in which fibres coated with a magnetic or magnetisable material are embedded in the primary substrate. This has similar disadvantages to US-A-5434917.
  • a recording medium comprises a substrate storing data which can be read; and particulate matter provided in a layer spun coated, printed or transferred on the substrate, the particulate matter defining an authentication code when read.
  • a method of manufacturing a recording medium comprises providing a substrate which can store data, and spin coating, printing or otherwise transferring a layer incorporating particulate matter on to the substrate, the particulate matter defining an authentication code.
  • a layer may be printed (eg using an ink or pigment with a low concentration of particles) or transferred (eg hot foil) on to the substrate.
  • the nature of the particulate matter depends on the extent to which their properties can be detected. Thus, if the particulate containing layer is covered with an opaque layer then the particulate containing layer must be detectable outside the visible wavelength range, for example by virtue of its magnetic or acoustic properties. However, if the particulate containing layer is normally visible then the particulate matter can present visible or machine detectable characteristics such as fluorescence, light scatter, reflectance, luminescence and the like.
  • the complexity of the coding can be determined by varying the concentration of particular matter.
  • the property of the particulate matter is detectable under second predetermined conditions different from the first predetermined conditions used to read data stored on the record medium. This then avoids the normal data reading process from being confused by the presence of particulate matter.
  • the stored data is read under an infra-red laser while the particulate matter detectable within the visible or ultra-violet range, usually from the opposite side of the recording medium since the particulate containing layer is usually provided on the opposite side to the stored data.
  • the code could be defined by monitoring the presence/absence of particulate matter at various locations across the recording medium with reference to the centre or outside circumference of the disc .
  • this detector may be fixed relative to the recording medium and determine a lateral code across the record medium as a whole.
  • the rotation of the recording medium is advantageous since it allows repetitive detection of the authentication code hence reducing the signal to noise ratio.
  • a more conventional helical reading method could be used in which the record medium is read in a helical scan producing a more complex/longer code.
  • the authentication code is read following manufacture of the recording medium and the code or an encrypted form of the code is provided on a package in which the recording medium is provided. This provides a unique link between having the packaging and the recording medium preventing being used on another recording medium.
  • the invention is particularly suitable for recording media such as in CD's or DVD's but of course is equally applicable to other recording media.
  • Figures 1A and IB are a schematic cross-section and plan respectively of a CD ROM manufactured according to an example of the invention
  • Figure 2A illustrates schematically an example of a reading device
  • Figure 2B illustrates a typical signal obtained from the reading device shown in Figure 2A;
  • FIG. 3 is a block diagram illustrating an authentication system
  • FIG 4 is a schematic view of packaging for the CD ROM shown in Figure 1.
  • the CD ROM shown in Figure 1A comprises a polycarbonate substrate 1 having it upper surface 2 embossed with digital information, using pressure and temperature. This embossed surface is metallised and then a protective lacquer layer 3 is spin coated onto this metallised surface.
  • the spin coating process is known and an example is described in more detail in US-A-5395649.
  • the spun coated lacquer is then printed with information defining the content of the CD ROM and other information such as the name of the issuing company and the like.
  • CD ROM manufacture and process described so far is conventional .
  • particles are supplied to the lacquer prior to the spin coating process so that these particles indicated at 4 are spun with the lacquer material onto the surface of the substrate 1 and become embedded in the lacquer coating 3 in random positions spaced around the CD ROM as can be seen in Figure IB.
  • these particles 4 can be designed to be detected in a number of different ways.
  • the particles are magnetic, while in other examples they luminesce, for example fluoresce, or simply act as radiation scattering points.
  • FIG. 2A illustrates an example of a radiation source/detector unit 5 positioned above the CD ROM indicated at 6.
  • the radiation source may comprise a set of LEDs, a UV lamp or the like (not shown) depending upon the nature of the particles 4 while the detector comprises, for example, a linear CCD array.
  • the detector comprises, for example, a linear CCD array.
  • Figure 2B includes a positive charge at each lateral position where a particle was detected. In this case, there are six pulses indicating the presence of six particles at different radial positions.
  • the signal from the unit 5 is then fed to an A/D converter 7 where it is digitised and the form of the signal including the spacing between pulses is determined by a microprocessor 8 and stored in a database 9.
  • the radiation source/detector unit tracks a spiral groove in the CD ROM so as to detect all of the particles and develop a more complex code.
  • Packaging is then provided for the CD ROM and, as shown in Figure 4, the package 10, as well as including conventional printing describing the contents of the CD ROM as shown at 11, is printed with a bar code 12 which is associated with the authentication code of the CD ROM to be packaged.
  • the bar code 12 may be a simple representation of the authentication code or, more preferably, an encrypted version. Alternatively, the bar code 12 may provide an address in the database 9 from which the authentication code can be obtained.
  • the authentication code on the CD ROM can be used simply to authenticate the CD ROM if there is a suspicion that it has been counterfeited, for example by comparing this manually or automatically with the bar code read by a bar code reader (not shown) .
  • an authentication code to control the use of the CD ROM.
  • a CD reader 13 such as a PLAYSTATIONTM, CD player or the like may be provided with a modem 14 so that a signal representing the code as read by the CD reader 13 can be sent to the microprocessor 15 via a telephone line 16 and the microprocessor 15 can check from the database 9 as to whether or not the code is an authentic code. If it is authentic, the microprocessor 15 can provide an indication of this to the CD reader 13 and which indication could be used to allow the CD reader to operate. If the code is not authentic, the appropriate signal will not be sent back to the CD reader which will remain inoperative with that CD
  • ROM read only memory
  • a conventional CD reader could be modified so that the head used to read data also includes a light source/detector unit similar to the unit 5.

Abstract

A recording medium comprising a substrate (1) storing data which can be read; and particulate matter (4) provided in a layer spun coated, printed or transferred on the substrate, the particulate matter defining an authentication code when read.

Description

RECORDING MEDIUM AND MANUFACTURING METHOD
The invention relates to recording media and methods for manufacturing such media and in particular to a method of preventing fraudulent replication of such media.
Recording media such as Compact Disks (CD) , CD ROMs and Digital Video Disks (DVD) are manufactured on a very large scale worldwide and are subject to counterfeiting. To try to reduce this risk, manufacturers package authentic media in sealed wrappers and provide certificates and the like. Nevertheless, determined counterfeiters are able to produce counterfeit copies by utilising correct packaging or selling on replicated media to third parties for counterfeit packaging. US-A-5974150 describes a special, coded label for use with goods, the label being impregnated with a randomly distributed arrangement of fluorescent dichroic fibres. The arrangement of fibres can be detected and used to constitute an authentication code which could be stored in a database to allow the record medium to be subsequently authenticated. One problem with this approach is that it requires the use of a separate label and such labels could be stolen and used again with counterfeit record media. Also, the fibres are poorly located in space making detection difficult.
US-A-5920628 describes a method of "fingerprinting" magnetic media by detecting remenant noise in a magnetic medium such as a computer program diskette or video tape and the like. This overcomes the problem of a separate label but in practice it is difficult to detect the remnant noise which is a very small ac magnetic variation, due to voids, inclusions crystal defects etc. which are intentionally designed out of most recording media.
US-A-5434917 describes the incorporation of randomly distributed ferrite particles in a plastic support of a credit card to constitute an authentication code. The disadvantage of this is that it requires modification of the primary card substrate. Modification of the substrate can lead to a weakness in the flex properties which would be detrimental to the card's lifetime. Also the nature of the card format requires a single pass through the detection system hence the possibility of mis-reads.
US-A-4114032 describes the manufacture of documents such as bank notes, credit cards and the like in which fibres coated with a magnetic or magnetisable material are embedded in the primary substrate. This has similar disadvantages to US-A-5434917.
In accordance with a first aspect of the present invention, a recording medium comprises a substrate storing data which can be read; and particulate matter provided in a layer spun coated, printed or transferred on the substrate, the particulate matter defining an authentication code when read.
In accordance with a second aspect of the present invention, a method of manufacturing a recording medium comprises providing a substrate which can store data, and spin coating, printing or otherwise transferring a layer incorporating particulate matter on to the substrate, the particulate matter defining an authentication code.
We have realised that in the conventional manufacture of recording media such as CDs, CD ROMs and DVDs, it is common practice to include a spun coated protective layer on the surface of the substrate. Further, this layer can be utilised to incorporate particulate matter to define a random or pseudo-random code by taking advantage of the spin coating process. There is thus no need to modify the primary manufacturing process, which the particular matter can simply be added into the material of the spun coated layer.
As alternatives to spin coating, a layer may be printed (eg using an ink or pigment with a low concentration of particles) or transferred (eg hot foil) on to the substrate. The nature of the particulate matter depends on the extent to which their properties can be detected. Thus, if the particulate containing layer is covered with an opaque layer then the particulate containing layer must be detectable outside the visible wavelength range, for example by virtue of its magnetic or acoustic properties. However, if the particulate containing layer is normally visible then the particulate matter can present visible or machine detectable characteristics such as fluorescence, light scatter, reflectance, luminescence and the like.
The complexity of the coding can be determined by varying the concentration of particular matter. Typically
5 to 50 particles could be used but numbers outside this range are envisaged. Preferably, the property of the particulate matter is detectable under second predetermined conditions different from the first predetermined conditions used to read data stored on the record medium. This then avoids the normal data reading process from being confused by the presence of particulate matter. Typically, the stored data is read under an infra-red laser while the particulate matter detectable within the visible or ultra-violet range, usually from the opposite side of the recording medium since the particulate containing layer is usually provided on the opposite side to the stored data.
It is not necessary to use all the particulate matter to define the authentication code but, in a relatively simple approach, the code could be defined by monitoring the presence/absence of particulate matter at various locations across the recording medium with reference to the centre or outside circumference of the disc .
In a more complex approach, typically where the recording medium is rotated under a detector, this detector may be fixed relative to the recording medium and determine a lateral code across the record medium as a whole. The rotation of the recording medium is advantageous since it allows repetitive detection of the authentication code hence reducing the signal to noise ratio.
Alternatively, a more conventional helical reading method could be used in which the record medium is read in a helical scan producing a more complex/longer code.
Preferably, the authentication code is read following manufacture of the recording medium and the code or an encrypted form of the code is provided on a package in which the recording medium is provided. This provides a unique link between having the packaging and the recording medium preventing being used on another recording medium.
The invention is particularly suitable for recording media such as in CD's or DVD's but of course is equally applicable to other recording media.
Some examples of recording media and methods relating to this invention will now be described with reference to the accompanying drawings, in which:-
Figures 1A and IB are a schematic cross-section and plan respectively of a CD ROM manufactured according to an example of the invention;
Figure 2A illustrates schematically an example of a reading device;
Figure 2B illustrates a typical signal obtained from the reading device shown in Figure 2A;
Figure 3 is a block diagram illustrating an authentication system; and
Figure 4 is a schematic view of packaging for the CD ROM shown in Figure 1. The CD ROM shown in Figure 1A comprises a polycarbonate substrate 1 having it upper surface 2 embossed with digital information, using pressure and temperature. This embossed surface is metallised and then a protective lacquer layer 3 is spin coated onto this metallised surface. The spin coating process is known and an example is described in more detail in US-A-5395649. The spun coated lacquer is then printed with information defining the content of the CD ROM and other information such as the name of the issuing company and the like.
The CD ROM manufacture and process described so far is conventional . In one example of the invention, particles are supplied to the lacquer prior to the spin coating process so that these particles indicated at 4 are spun with the lacquer material onto the surface of the substrate 1 and become embedded in the lacquer coating 3 in random positions spaced around the CD ROM as can be seen in Figure IB.
As explained above, these particles 4 can be designed to be detected in a number of different ways. In one example, the particles are magnetic, while in other examples they luminesce, for example fluoresce, or simply act as radiation scattering points.
The locations of the particles 4 on the CD ROM can be used to define an authentication code. Figure 2A illustrates an example of a radiation source/detector unit 5 positioned above the CD ROM indicated at 6. The radiation source may comprise a set of LEDs, a UV lamp or the like (not shown) depending upon the nature of the particles 4 while the detector comprises, for example, a linear CCD array. As the CD ROM 6 is rotated beneath the radiation source/detector unit 5, the particles 4 are excited by the impinging radiation so as to fluoresce. The fluorescence is detected by those CCDs located above the particles 4 as they pass underneath. This fluorescence is collected by each CCD during a single rotation of the CD ROM 6 and then the charges are downloaded in a conventional manner resulting in a signal of, for example, the type shown in Figure 2B.
Figure 2B includes a positive charge at each lateral position where a particle was detected. In this case, there are six pulses indicating the presence of six particles at different radial positions. The signal from the unit 5 is then fed to an A/D converter 7 where it is digitised and the form of the signal including the spacing between pulses is determined by a microprocessor 8 and stored in a database 9.
In more sophisticated apparatus, the radiation source/detector unit tracks a spiral groove in the CD ROM so as to detect all of the particles and develop a more complex code.
Packaging is then provided for the CD ROM and, as shown in Figure 4, the package 10, as well as including conventional printing describing the contents of the CD ROM as shown at 11, is printed with a bar code 12 which is associated with the authentication code of the CD ROM to be packaged. The bar code 12 may be a simple representation of the authentication code or, more preferably, an encrypted version. Alternatively, the bar code 12 may provide an address in the database 9 from which the authentication code can be obtained.
The authentication code on the CD ROM can be used simply to authenticate the CD ROM if there is a suspicion that it has been counterfeited, for example by comparing this manually or automatically with the bar code read by a bar code reader (not shown) . However, it would also be possible to use an authentication code to control the use of the CD ROM. Thus, for example, a CD reader 13 (Figure 3) such as a PLAYSTATION™, CD player or the like may be provided with a modem 14 so that a signal representing the code as read by the CD reader 13 can be sent to the microprocessor 15 via a telephone line 16 and the microprocessor 15 can check from the database 9 as to whether or not the code is an authentic code. If it is authentic, the microprocessor 15 can provide an indication of this to the CD reader 13 and which indication could be used to allow the CD reader to operate. If the code is not authentic, the appropriate signal will not be sent back to the CD reader which will remain inoperative with that CD
ROM. To achieve this, a conventional CD reader could be modified so that the head used to read data also includes a light source/detector unit similar to the unit 5.

Claims

1. A recording medium comprising a substrate storing data which can be read; and particulate matter provided in a layer spun coated, printed or transferred on the substrate, the particulate matter defining an authentication code when read.
2. A medium according to claim 1, wherein the layer comprises a lacquer.
3. A medium according to any of the preceding claims, wherein the particulate matter comprise one or more of magnetic, luminescent, light scattering, acoustic absorbing or reflecting particles.
4. A medium according to any of the preceding claims, wherein the data can be read under first predetermined conditions, the particulate matter being detectable under second predetermined conditions different from the first predetermined conditions.
5. A medium according to claim 4, wherein the second predetermined conditions comprise UN irradiation.
6. A medium according to claim 4 or 5, wherein the first predetermined conditions comprise infrared laser irradiation.
7. A recording medium according to any of the preceding claims, wherein the data is read by causing relative rotation between the medium and a reader.
8. A medium according to claim 7, the medium comprising a compact disc, CD ROM, or digital video disk.
9. A packaged recording medium in which a recording medium according to any of the preceding claims is provided in a package, the package carrying indicia relating to the authentication code of the recording medium.
10. A packaged recording medium according to claim 9, wherein the indicia comprise a representation of the authentication code, for example a visible or invisible bar code or part bar code .
11. A method of manufacturing a recording medium, the method comprising providing a substrate which can store data, and spin coating, printing or otherwise transferring a layer incorporating particulate matter on to the substrate, the particulate matter defining an authentication code.
12. A method according to claim 11, wherein the layer comprises a protective layer, such as a lacquer.
13. A method according to claim 11 or claim 12, wherein the particulate matter comprises one or more of magnetic, luminescent, light scattering, acoustic absorbing, or reflecting particles.
14. A method according to any of claims 11 to 13, wherein the data, when stored, is readable under first predetermined conditions, the particulate matter being detectable under second predetermined conditions different from the first predetermined conditions.
15. A method according to claim 14, further comprising inspecting the recording medium under the second predetermined conditions to detect the authentication code and storing and/or displaying the detected code.
16. A method of manufacturing a recording medium according to any of claims 11 to 15, wherein the recording medium is constructed in accordance with any of claims 1 to 10.
17. A method of packaging a recording medium manufactured in accordance with any of claims 11 to 15 or in accordance with any of claim 1 to 10, the method comprising providing packaging material around the recording medium, the packaging material carrying indicia related to the authentication code of the recording medium.
18. Apparatus for reading an authentication code on a record medium according to any of claims 1 to 10 or manufactured in accordance with any of claims 11 to 15, the apparatus comprising means for inspecting the recording medium under the second predetermined conditions; and a detector for reading the authentication code.
19. Apparatus according to claim 18, wherein the data is stored as a spiral groove on the substrate, at least the detector being movable relative to the groove to read the authentication code.
20. Apparatus according to claim 18, wherein the detector comprises a set of detector elements arranged in a line over part of the recording medium in use, the apparatus further comprising means for causing relative movement between the detector and the recording medium.
21. Apparatus according to claim 19 or claim 20, wherein relative movement between the detector and the recording medium is caused by rotating the recording medium.
22. Apparatus according to any of claims 19 to 21, further comprising means for verifying the authentication code by comparing the code with a reference.
23. Apparatus according to claim 22, further comprising a reference reader, such as a bar code reader, for reading the reference on packaging associated with the recording medium.
24. Apparatus according to claim 21, the apparatus being connectable to a remote database holding the reference.
25. Apparatus according the any of the claims 18 to 24, wherein the recording medium comprises a CD or DVD, the apparatus forming part of a CD or DVD player respectively.
PCT/GB2001/001617 2000-04-13 2001-04-10 Recording medium and manufacturing method WO2001080236A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48527/01A AU4852701A (en) 2000-04-13 2001-04-10 Recording medium and manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0009092A GB0009092D0 (en) 2000-04-13 2000-04-13 Recording medium and manufacturing method
GB0009092.8 2000-04-13

Publications (1)

Publication Number Publication Date
WO2001080236A1 true WO2001080236A1 (en) 2001-10-25

Family

ID=9889827

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/001617 WO2001080236A1 (en) 2000-04-13 2001-04-10 Recording medium and manufacturing method

Country Status (3)

Country Link
AU (1) AU4852701A (en)
GB (1) GB0009092D0 (en)
WO (1) WO2001080236A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1620850A2 (en) * 2003-04-28 2006-02-01 Michelle Jillian Fuwausa Illuminated devices using uv-led's
EP1740929A1 (en) * 2004-04-21 2007-01-10 General Electric Company Authentication system, data device, and methods for usingthe same
US7496938B2 (en) * 2003-11-24 2009-02-24 Sabic Innovative Plastics Ip B.V. Media drive with a luminescence detector and methods of detecting an authentic article
WO2018193195A1 (en) 2017-04-19 2018-10-25 Idemia France Method for producing a security device composed of stacked layers and method for authenticating such a security device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155982A1 (en) * 1980-06-23 1985-10-02 Light Signatures, Inc. Authenticator device
EP0583709A1 (en) * 1992-08-17 1994-02-23 THOMSON multimedia Unforgeable identification device, identification device reader and method of identification
EP0696779A1 (en) * 1994-07-11 1996-02-14 Toppan Printing Co., Ltd. Data recording medium
FR2732137A1 (en) * 1995-03-23 1996-09-27 Moisand Jean Claude Security card with optical track
GB2304077A (en) * 1995-06-30 1997-03-12 Andrew John Farrall Security device comprising reflective particles
WO1997033252A1 (en) * 1996-03-04 1997-09-12 Ad & D Innovationstechnik Gmbh Process and device for verifying the authenticity of documents in the form of chip cards
US6028936A (en) * 1996-01-16 2000-02-22 Disney Enterprises, Inc. Method and apparatus for authenticating recorded media

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155982A1 (en) * 1980-06-23 1985-10-02 Light Signatures, Inc. Authenticator device
EP0583709A1 (en) * 1992-08-17 1994-02-23 THOMSON multimedia Unforgeable identification device, identification device reader and method of identification
EP0696779A1 (en) * 1994-07-11 1996-02-14 Toppan Printing Co., Ltd. Data recording medium
FR2732137A1 (en) * 1995-03-23 1996-09-27 Moisand Jean Claude Security card with optical track
GB2304077A (en) * 1995-06-30 1997-03-12 Andrew John Farrall Security device comprising reflective particles
US6028936A (en) * 1996-01-16 2000-02-22 Disney Enterprises, Inc. Method and apparatus for authenticating recorded media
WO1997033252A1 (en) * 1996-03-04 1997-09-12 Ad & D Innovationstechnik Gmbh Process and device for verifying the authenticity of documents in the form of chip cards

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1620850A2 (en) * 2003-04-28 2006-02-01 Michelle Jillian Fuwausa Illuminated devices using uv-led's
EP1620850A4 (en) * 2003-04-28 2009-10-21 Michelle Jillian Fuwausa Illuminated devices using uv-led's
US7496938B2 (en) * 2003-11-24 2009-02-24 Sabic Innovative Plastics Ip B.V. Media drive with a luminescence detector and methods of detecting an authentic article
EP1740929A1 (en) * 2004-04-21 2007-01-10 General Electric Company Authentication system, data device, and methods for usingthe same
WO2018193195A1 (en) 2017-04-19 2018-10-25 Idemia France Method for producing a security device composed of stacked layers and method for authenticating such a security device

Also Published As

Publication number Publication date
AU4852701A (en) 2001-10-30
GB0009092D0 (en) 2000-05-31

Similar Documents

Publication Publication Date Title
US11200439B1 (en) Authentication method and system
US10089478B1 (en) Authentication method and system
US10019586B1 (en) Authentication method and system
US10291411B1 (en) Authentication method and system
US6902111B2 (en) Method and apparatus for impeding the counterfeiting of discs
US6254002B1 (en) Antiforgery security system
EP0644508B1 (en) Secure optical identification method and means
US6053406A (en) Antiforgery security system
US5834748A (en) Transactional item with non-parallel magnetic elements
US8756707B2 (en) Method of manufacturing security document and method for authenticating the document
EP2002385B1 (en) Method of reading at least one bar code and system for reading a bar code
EP0824242A2 (en) Antiforgery security system
US5270526A (en) Card type recording medium and method of preventing a false use thereof
JPH11259975A (en) Disk shaped record medium and forgery detecting device for the medium reproducer and manufacturing device
JPH0776981B2 (en) Card-type recording medium recording / reproducing apparatus and method for preventing unauthorized use thereof
WO2001080236A1 (en) Recording medium and manufacturing method
JPS6318490A (en) Card and its processor
KR20000015454A (en) Deciphering/recording apparatus of information storage card having forgery and falsification prevention function
CA2739508A1 (en) Method of manufacturing security document and method for authenticating the document
JPH0969259A (en) Object to be checked in genuineness and method for checking the object

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP