EP2220642B1 - Document à dispositif d'affichage intégré - Google Patents

Document à dispositif d'affichage intégré Download PDF

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Publication number
EP2220642B1
EP2220642B1 EP08849485.1A EP08849485A EP2220642B1 EP 2220642 B1 EP2220642 B1 EP 2220642B1 EP 08849485 A EP08849485 A EP 08849485A EP 2220642 B1 EP2220642 B1 EP 2220642B1
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EP
European Patent Office
Prior art keywords
information
order
data
document
display elements
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.)
Active
Application number
EP08849485.1A
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German (de)
English (en)
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EP2220642A1 (fr
Inventor
Arthur Mathea
Frank Dietrich
Frank Fritze
Jörg Fischer
Malte Pflughoefft
Manfred Dr. Paeschke
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Bundesdruckerei GmbH
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Bundesdruckerei GmbH
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Publication of EP2220642A1 publication Critical patent/EP2220642A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • 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
    • G07D7/003—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 security elements
    • 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
    • G07D7/01—Testing electronic circuits therein
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • B42D2033/44—
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto

Definitions

  • the present invention relates to a document with an integrated display device, in particular a value or security document, a reading device and a method for verifying a document.
  • Documents with an integrated electronic circuit are known in the art in various forms per se.
  • a banknote as an electronic passport
  • a plastic-based chip card in particular as a so-called smart card, in contact, contactless or dual interface Execution. This is in particular on the DE 10 2005 025 806 directed.
  • RFID Radio Frequency Identification
  • Previous RFID systems generally include at least a transponder and a transceiver unit.
  • the transponder is also referred to as an RFID tag, RFID chip, RFID tag, RFID tag or radio tag; the transceiver unit is also referred to as a reader, reader or reader.
  • integration with servers, services and other systems, such as cash register systems or merchandise management systems via a so-called middle goods, is often provided.
  • the data stored on a contactless, such as an RFID transponder data are made available via radio waves. At low frequencies, this is done inductively via a near field, at higher frequencies via an electromagnetic far field.
  • An RFID transponder typically includes a microchip and an antenna housed in a carrier or housing or printed on a substrate. Active RFID transponders also have an energy source, such as a battery, in contrast to passive transponders.
  • RFID transponders can be used for various documents, in particular in chip cards, for example for the realization of an electronic wallet or for electronic ticketing. Furthermore, these are integrated into paper or plastic, such as in value and security documents, especially banknotes and identity documents.
  • an identification and security card of laminated and / or molded plastics is known, which includes an integrated semiconductor with an antenna for performing an RFID method.
  • From the DE 10 2004 008 841 A1 is also a book-like value document, as has become known, for example, a passport containing a transponder unit.
  • Such security or value documents may have an integrated display device, such as eg DE 10 2005 030 626 A1 . DE 10 2005 030 627 A1 . DE 10 2005 030 628 A1 . WO 2004/080100 A1 .
  • EP 0 920 675 B1 . US 6,019,284 . US 6,402,039 B1 . WO 99/38117 is known.
  • Security or value documents can be equipped with a contact-type or contactless interface, for example an RFID interface, or with an interface that permits both wired and wireless communication with a chip card terminal. In the latter case, one speaks of so-called dual-interface smart cards. Smart card communication protocols and methods are specified, for example, in ISO 7816, ISO 14443, ISO 15763.
  • a disadvantage of such documents with RFID functionality is that the RFID interface can be addressed without the consent of the document bearer.
  • a protection mechanism for travel documents to protect against unauthorized reading of data from such a document is known as "Basic Access Control", cf. See “Machine Readable Travel Document", Technical Report, PKI for Machine Readable Travel Documents Offering ICC Read-Only Access, Version 1.1, October 01, 2004, International Civil Aviation Organization (ICAO).
  • WO 2007/137555 A2 is an electronically configurable motor vehicle license plate with a display known.
  • data is assembled and encrypted in an external configuration unit.
  • the encrypted data is transmitted by an infrared transmitter integrated in the configuration unit as infrared signals.
  • the signals are decrypted, for which a corresponding decryption software is stored in the display electronics.
  • Other electronic vehicle license plates are known from US 5,657,008 and US 2007/0285361 A1 ,
  • the WO 01/82284 A1 deals with an LCD display that operates at low voltages.
  • the US 2006/007094 A1 deals with the control of an LCD display, in order to achieve an improved image representation and to prevent a flicker of the screen.
  • the US 2004/171406 A1 has a money card to the object.
  • Information can be displayed on a display.
  • WO 2005/082671 A2 For example, an electronic display device having a wireless center module is described. Solar cells are provided for the electrical supply of the module.
  • Embodiments of a document according to the invention include an integrated display device and a memory for storing data.
  • This data may be any data suitable for image display on the display device, i. for example, one or more digital photos, textual information, barcodes or the like.
  • the data may also include an image sequence.
  • the document also has drive means for driving the display device for playback of the data.
  • the display device has a plurality of display elements, which are arranged spatially distributed in the display device. For example, the display elements are arranged in a matrix.
  • the actual control of the display elements is different from the given by the spatial arrangement order.
  • the display elements of the display device are not driven sequentially in the order of the lines, but it is more or less deviated from the order given by the row arrangement order.
  • a security feature can be defined and / or information sent, which can be detected for example by a reader.
  • the deviation of the sequence of the control of the order given by the spatial arrangement of the display elements can relate only to a portion of the document, whereby a readjustment of the document is further complicated because a counterfeiter can not know to which portion of the document itself this deviation from the order of activation extends.
  • the driving means of the document have a driver logic circuit adapted to drive the display elements in the order of their spatial arrangement.
  • the driver logic circuit can thus be designed so that, for example, a conventional line-by-line control of the display elements from top to bottom or from bottom to top takes place, which are controlled in the control of a given row whose display elements in order from right to left or from left to right.
  • the deviation of the sequence of the drive is realized in this embodiment in that the row and / or column lines, which connect the driver logic circuit with the display elements, are connected to these display elements deviating from the spatial order. For example, one or more row lines are interchanged.
  • This embodiment has the particular advantage that it can be implemented with minimal effort, since the driver logic circuit of the display device can be designed as usual in the prior art.
  • the drive means have a driver logic circuit which is designed to drive the display elements differently from the order given by the spatial arrangement of the display elements.
  • the deviation of the sequence of the control is thus realized at the level of the driver logic and not at the level of the row and / or column lines.
  • the order of activation of the line and / or. Columns are defined by a given driver logic circuit or programmatically, e.g. through the control program.
  • the data stored in the memory of the document are transformed.
  • the transformation is designed so that the deviation of the order of the control of the display elements for correct image reproduction is compensated.
  • the document has means for transforming the data.
  • the data is stored in non-transformed form in the memory.
  • the transformation is done here by the document itself to compensate for the deviation in the order of driving from the spatial arrangement of the display elements for correct reproduction.
  • the data is stored in coded form.
  • the data is in a common data format, such as JPEG, GIF, TIFF or the like.
  • the document has program means for decoding the data.
  • the decoded data are written, for example, in a buffer memory, in particular a so-called frame buffer.
  • the decoded data is transformed in an appropriate manner to compensate for the deviation in the order of driving for a correct reproduction.
  • information is stored in the document which determines the deviation of the order of control of the display elements. For example, this information is processed for correct transformation of the data. Further, this information is processed by the driver logic circuit to determine the deviation of the order of driving from the order given by the spatial arrangement of the display elements.
  • the order of the display is predetermined by the reader.
  • the reader transmits the order to the document, which controls the display device accordingly. This verifies the authenticity of the document.
  • the display device integrated in the document is an active or passive matrix display or a segment display.
  • the display device may be an electrophoretic or electrochromic display, a bistable display, a rotary element display, in particular so-called electronic paper (“e-paper"), an LED display, in particular an inorganic, organic or hybrid LED display , an LCD display in various embodiments (for example twisted nematic, super twisted nematic, cholesteric, nematic), a ferroelectric display, an electrowetting display, an interferometric modulator element display (IMOD), a hybrid display or a display based on a flexible display, as it is commercially available, for example from the company Citala ( www.citala.com ) (see US 2006/0250535 A1 and WO 2007/054944 ), act.
  • e-paper electronic paper
  • LED display in particular an inorganic, organic or hybrid LED display
  • LCD display in various embodiments (for example twisted nematic, super twisted nematic, cholesteric, nematic)
  • ferroelectric display for example twisted
  • the data stored in the document may include various contents suitable for generating image display on the display device, that is, for example, digital image recordings, especially facial images of a person, coats of arms, seals, textual information, bar codes, and the like.
  • the information which determines the deviation of the order of activation of the display elements is personalization information, a security feature and / or a cryptographic key.
  • the personalization information may be, for example, information regarding the bearer of the document, such as its name, place of residence, size, age, gender, weight, and the like. This information can be displayed in full or in part in plain text on the display device during playback of the stored data.
  • the information is a security feature, such as a crest, seal or the like.
  • This information is output when reproducing the data by the deviation from the order of driving the display elements from their order given by the spatial arrangement.
  • a security feature to protect against exchange of image data on the disk.
  • a driver circuit is used, which does not compensate for the changed order, but the compensation takes place by transformation of the image data, which are incorporated in the personalization in the document. If manipulated image data are introduced into the document, the result is an easily recognizable misrepresentation.
  • the information is a cryptographic key.
  • the cryptographic key may be a symmetric key or an asymmetric key.
  • the cryptographic key is detected by a reader, so that the reader can execute a cryptographic protocol together with the document.
  • the information is a vehicle parameter and / or a charging status of the motor vehicle.
  • the document in particular in the embodiment as an electronic license plate, can be attached to the motor vehicle or a motor vehicle part.
  • the vehicle parameter may be e.g. to the speed of the motor vehicle, a noise level or an emission value act. In particular, it can be output by the information which pollutant class the motor vehicle fulfills, in particular according to the applicable particulate matter ordinance.
  • the document has a protected memory area in which further data is stored. Further, the document has an interface for reading access of the reader to this further data.
  • the interface may be contact-based or contactless, in particular designed as an RFID interface. Furthermore, the interface can also be designed as a so-called dual mode interface.
  • the condition for a read access of the reader to the further data is the previous successful execution of the cryptographic protocol.
  • the cryptographic protocol may, for example, be a so-called challenge-response method.
  • the cryptographic protocol protects the further data against unauthorized access. This is particularly advantageous when the third data is sensitive data, such as biometric data, in particular fingerprint data or iris scan data of the document's bearer.
  • a "document” means paper-based and / or plastic-based documents, such as identity documents, in particular passports, identity cards, visas, driving licenses, vehicle registration documents, vehicle registration documents, company identity cards, health cards or other ID documents, as well as chip cards, means of payment, in particular bank cards and credit cards, waybills or other credentials.
  • a "document” is also understood to mean an electronic license plate, in particular an electronic license plate number.
  • the document can also form an integral part of a means of transport, in particular of a motor vehicle.
  • the document can be integrated in the front or rear hood or in the so-called. Front end or backend by a display there is introduced or applied according to the invention.
  • the document can also be metal-based, in particular sheet-based; So it can have a document body made of sheet metal. But it can also have a document body made of a different material, such as a composite material, such as is used in vehicle construction.
  • the invention relates to a reading device for a document.
  • the reader has a sensor for detecting the order of driving the display elements of the display device to receive the information included in this order.
  • the result of capturing the order is the information.
  • This information may vary from document to document, e.g. a serial number or personalized information. It can also be multiple information, e.g. issuing authority or design, coats of arms or seals.
  • the reading device is designed to verify the document with the aid of the information. For example, the reader compares the received information with a reference information. A sufficient match between the received information and the reference information is a prerequisite for the document to be recognized as authentic.
  • the reader for verifying the document has a prescription for the decryption and / or evaluation of the information.
  • the reading device has means for executing the cryptographic protocol by means of the received information.
  • this information is a cryptographic key. Due to the detection of the cryptographic key, the reader can execute the cryptographic protocol with the document. Upon successful completion of the cryptographic protocol, the reader may access a protected memory area of the document for reading data therefrom.
  • the reading device is designed to detect the document of a passing means of transport;
  • the document is designed, for example, as an electronic license plate.
  • the reading device can serve, for example, for detecting a vehicle parameter, a driving parameter or a charging status of the motor vehicle, in particular for carrying out traffic checks, exhaust gas controls and / or fee controls.
  • the invention relates to a method for verifying a document.
  • the information optically received by the display device is compared with reference information.
  • the FIG. 1 1 shows a document 100 having a display 102 integrated into the document body of the document 100 and an electronic circuit 104 for actuating the display 102.
  • the display 102 includes a multiplicity of display elements, which may be arranged in matrix form, for example.
  • the display 102 may be a passive or an active matrix display.
  • the electronic circuit 104 includes one or more electronic memories 126 for storing, in particular, data 106.
  • the electronic circuit 104 may access the data 106.
  • the electronic circuit 140 serves to access the data 106 to drive the display 102 to display the data 106 so that a user of the document 100 can visually perceive the playback of the data 106.
  • the data 106 may be, for example, image data.
  • image data is meant here data suitable for display on the display 102, i. For example, a digital photograph, textual information, a one- or two-dimensional barcode or the like.
  • the electronic circuit 104 is designed so that during a refresh period all the display elements of the display 102 are driven once, so as to reproduce the data 106 on the display 102. This can be done with a refresh rate of, for example, 25 Hz or 50 Hz.
  • the electronic circuit 104 is further configured so that the order of the control of the display elements within a frame repetition period is different from the given by the spatial arrangement of the display elements sequence. Due to the deviation, the display 102 outputs information that is not visually detectable by the user.
  • the information may be, for example, personalization information, a security feature, and / or a cryptographic key. In particular, this may be one or more user-specific information, such as information about the carrier of the document, and / or information regarding the validity of the document, the issuing authority or the like.
  • the reader 108 has an optical sensor 110, such as a CCD sensor or an optical scanner.
  • the sensor 110 is configured to optically detect the order of driving the display elements in a picture refresh period to receive the information included in this order.
  • the sensor 110 is connected to an electronic circuit 112 of the reader 108.
  • a decoder is implemented to to decode the information encoded in the optically detected order of driving the display elements.
  • the reader 108 also has a user interface 116. Alternatively or additionally, the reader 108 may also have an interface to a computer and / or a network.
  • the information After the information has been received from the display 102 by the reader 108, the information is output via the user interface 116, for example.
  • the information is personalization information.
  • This personalization information may be indicated on document 100 as print 114 in plain text.
  • the authenticity of the document can therefore be checked since the information received by the reader 100 must match the personalization information shown on the imprint 114.
  • the information may also be a coat of arms, seal or other security feature.
  • the information representing such a security feature is detected by means of the sensor 110 of the reader 108. After decoding, the received information is compared with a reference information stored in the electronic circuit 112. If the optically received information agrees sufficiently with the reference information, an audible or visual signal is output via the user interface 116, which indicates whether or not the document 100 has passed the authenticity check.
  • the information output by the electronic circuit 104 via the display 102 by varying the order of driving the display elements within a refresh period may also be a vehicle parameter and / or a charge status.
  • the document 100 is an automotive electronic license plate formed, which is attached to a motor vehicle or which forms an integral part of the motor vehicle.
  • the electronic circuit 104 may interface with a motor vehicle electronic device that transmits the information to be output to the interface of the electronic circuit 104 at regular or irregular intervals.
  • the motor vehicle electronic device may be, for example, a so-called Electronic Control Unit (ECU).
  • ECU Electronic Control Unit
  • the motor vehicle electronic device can be networked via a motor vehicle bus system with the electronic circuit 104 in order to transmit the information to be output via the motor vehicle bus system.
  • the motor vehicle electronic device can be used to detect a vehicle parameter, on the basis of sensor signals.
  • a sensor is used to detect a current exhaust gas value of the motor vehicle. This current exhaust gas value is transmitted in the form of information from the motor vehicle electronic device to the electronic circuit 104, so that the exhaust gas value is output via the display 102. Accordingly, for further vehicle parameters, such as, for example, the speed, the noise level currently generated by the motor vehicle or other environmental and / or safety-relevant vehicle parameters can be traversed.
  • the motor vehicle electronic device is designed to determine a charging status. For example, it is determined by the motor vehicle electronic device whether a required fee, such as a toll or a waste gas charge, has been paid for the motor vehicle or is to be paid. Corresponding information indicating the charging status is output by the motor vehicle electronic device to the electronic circuit 104, so that this information is output via the display 102.
  • a required fee such as a toll or a waste gas charge
  • the reader 108 for detecting the information output via the display 102 may be formed by the stationary and / or the traveling motor vehicle.
  • the reader 108 may communicate over a network a central server computer in which the information detected by the display 102 is evaluated.
  • the data 106 may be the official license plate number here. Visually visible on the display 102, therefore, is the official motor vehicle license plate and, in addition, one or more further information that is not visually discernible without a reading device.
  • an update of the registration number may be carried out by updating the data 106, for example by sending data including the updated registration number from the automotive electronic unit to the electronic circuit 104 via the automotive bus system. which then overwrites the data 106 with the received data.
  • FIG. 2 shows a further embodiment of the document 100.
  • the display 102 of the document 100 includes a plurality of display elements 103 arranged in a matrix.
  • the electronic circuit 104 of the document 100 is embodied here as a chip, in particular as an RFID chip.
  • the electronic circuit 104 includes a driver circuit 122 for driving the display 102.
  • the driver circuit 122 includes a driver logic 123.
  • the driver circuit 122 is connected to the display 102 via row lines 1, 2, 3, 4, and 5 to drive one of the rows of the display 102, respectively.
  • the control of the display elements 103 via column lines is not absolutely necessary, especially not when the row lines 1, 2, 3, 4 and 5 are formed as data buses for controlling all the display elements 103 of the relevant row.
  • the electronic circuit 104 further includes a processor 128 for executing program instructions 131 implementing a control program and executing program instructions 132 for decoding the data 106.
  • This decoding is also called "rendering".
  • data 106 is encoded in a standardized data format, i. for example, in JPEG, GIF or TIFF format. Through the program instructions 131, the data 106 can be decoded.
  • the electronic circuit 104 further has a buffer memory 118, for example a so-called frame buffer.
  • the driver logic 123 is designed to drive the display elements in the order of their spatial arrangement, ie the driver logic 123 is designed such that the display elements of the rows Z1, Z2, Z3, Z4 and Z5 are successively activated within one image refresh period in this order.
  • the driver logic 123 is designed such that the display elements of the rows Z1, Z2, Z3, Z4 and Z5 are successively activated within one image refresh period in this order.
  • at least some of the row lines are connected by the spatial order of the arrangement of the display elements 103 deviating from the lines of the display 102.
  • the row line 1 is connected to the line Z1 and the row line 4 is connected to the line Z4, as it corresponds to the spatial arrangement.
  • the row line 2 is connected to the line Z5, the row line 3 to the line Z2 and the row line 5 to the line Z3 of the display 102.
  • the row line 2 is not connected to its, according to the driver logic 123 spatially associated row Z2, but deviating from this with the line Z5.
  • the row line 3 which is connected to the line Z2 instead of the line Z3 and to the row line 5, which is connected to the line Z3 instead of the line Z5.
  • the driver logic 123 serially lines the row lines, i. in the order row line 1, 2, 3, 4 and 5 drives to drive the corresponding lines Z1 to Z5 in the order specified by the spatial arrangement of these lines sequence, there is actually a control of the lines Z1 to Z5 in a deviating order, namely in the order Z1, Z5, Z2, Z4 and Z3.
  • the data 106 having the image lines B1, B2, B3, B4 and B5 are stored.
  • the program instructions 132 are designed here such that, in addition to the decoding of the data 106, a transformation takes place.
  • This transformation is designed such that it compensates for the sequence of the driving thereof which deviates from the spatial arrangement of the display elements 103.
  • the image line B5 is stored in the line ZB2 of the buffer memory 118.
  • the image line B2 is stored in the line ZB3 and the image line B3 in the line ZB5 of the buffer memory 118.
  • the row lines 3, 4 and 5 are subsequently driven by the driver logic 123 in order to reproduce the picture lines B2, B4 and B3 in this time sequence on the lines Z2, Z4 and Z3 of the display 102.
  • information can be output by the display 102, which can be received by a reader by machine.
  • this information is static, since the deviation of the order of the control of the order given by the spatial arrangement of the display elements 103 order by the interconnection of the row lines 1 to 5 is fixed.
  • the document 100 may also be designed so that the data 106 are already transformed in the memory 126.
  • the data 106 are captured by a digital image capture and are then available, for example, in the JPEG format.
  • This JPEG file is then transformed in such a way that the interconnection of the row lines 2, 3 and 5 deviating from the spatial arrangement of the lines Z1 to Z5 is compensated.
  • the data 106 thus transformed is then written into the memory 126.
  • this embodiment is unnecessary ie a transformation of the data 106 by the program instructions 132, since the data 106 have already been transformed before.
  • the row lines 1, 2, 3, 4 and 5 are connected in the order given by the spatial arrangement of the display elements 103 with the display 102, i. the row line 1 is used to control the line Z1, the row line 2 for driving the line Z2, the row line 3 for driving the line Z3, the row line 4 for driving the line Z4 and the row line 5 for driving the line Z5.
  • the sequence of their driving which deviates from the order of the spatial arrangement of the display elements 103, is implemented in this embodiment at the level of the driver logic 123, which is designed such that a selection of the row lines is carried out, for example, in the order 1, 5, 2, 4, 3 he follows.
  • this sequence of selection of the row lines can be changed depending on the information to be output. Accordingly, the transformation made by the program instructions 132 will also be adjusted accordingly. For example, to output a logic 0, the row lines 1 to 5 in the order 1, 5, 2, 4, 3 are driven by the driver logic 123. The transformation of the data 106 then takes place as in the buffer memory 118 of FIG. 2 shown.
  • the driver logic 123 controls the row lines in a subsequent refresh period in the order 2, 4, 3, 1, 5. Accordingly, the image lines for this refresh period in the buffer memory 118 are, due to a correspondingly adapted transformation, such that the image line B2 is stored in the first line ZB1 of the buffer memory, the image line B4 in the line ZB2, the image line B3 in the line ZB3, the Image line B1 in line ZB4 and image line B5 in line ZB5.
  • FIG. 3 shows a plan view of an embodiment of a document according to the invention 100.
  • a document such as a passport or identity card.
  • a face image of the document's wearer is displayed on the display 102.
  • This may be a time-immutable still image or an image sequence, wherein the image sequence includes facial images of the wearer of the document 100 from different views.
  • the document 100 also has an imprint 114 with textual information about the wearer of the document 100. At least a portion of this information may be output via the display 102 by varying the order of actuation of the display elements 103, this output being visualized by a user with the mere Eye is not detectable, but only with the help of a reader (see reader 108 of FIG. 1 ).
  • FIG. 4 FIG. 12 shows another embodiment of the document 100 and the reader 108.
  • the electronic circuit 104 is connected to an interface 124 of the document 100 for communicating with the reader 108.
  • the interface 124 may include one or more antenna turns extending in an edge region of the document 100.
  • the electronic memory 126 serves to store sensitive data 127.
  • the sensitive data 127 may be, for example, biometric data of the carrier of the document 100, such as fingerprint data, iris scan data, or the like.
  • the vulnerable data 127 is stored in a specially protected memory area of the memory 126.
  • the circuit 104 further includes a processor 128 for executing program instructions 130 by which the steps of a cryptographic protocol relating to the document 100 are implemented.
  • the processor 128 also serves to execute the program instructions 131 which implement a control program.
  • the reader 108 has an optical sensor 110 for detecting the image reproduction of the display 102 and for receiving the information 107 sent from the display 102.
  • the optical sensor 110 may be a CCD sensor or a scanner.
  • the reader 108 further has an interface 132 corresponding to the interface 124 of the document 100.
  • the interface 132 is designed for RFID communication with the document 100 or its circuit 104.
  • the reader 108 has at least one processor 134 for executing a control program 136 as well as program instructions 138, by means of which the steps of the cryptographic protocol concerning the reader 108 are implemented.
  • the reader 108 may also be used to execute an application program 140.
  • the application program 140 may also be executed by another computer system connected to the reader 108.
  • the control program of the document 100 implemented by the program instructions 131 is designed such that it drives the driver circuit 122 to display the data 106.
  • the information 107 determines the chronological sequence of the control of the display elements of the display 102, as a result of which the information 107 is sent to the reading device 108.
  • the reading device 108 To access the data 127 of the memory 126, the reading device 108 first acquires the display 102 by means of its optical sensor 110. For this purpose, the sensor 110 is controlled accordingly by the control program 136. The control program 136 decodes the order of driving the display elements detected by the sensor 110 so as to receive the information. In this way, the control program 136 gets knowledge of the cryptographic key.
  • control program 136 Upon detection of the cryptographic key, the control program 136 starts execution of the program instructions 138 so that the cryptographic protocol is performed between the reader 108 and the document 100 using the cryptographic key.
  • the cryptographic protocol is a challenge-response method.
  • the challenge-response method can, for example, run so that the reader 108 first sends a request for the data to the interface 124 of the document 100. Thereafter, the execution of the program instructions 130 is started. This is on the part of the document 100 z. B. generates a random number that is symmetrically encrypted with a reference value of the cryptographic key, so that a ciphertext results. The encrypted random number, i. the ciphertext is sent from the interface 124 of the document 100 to the interface 132 of the reader 108.
  • the reader 108 decrypts the ciphertext received from the document 100 using the previously received cryptographic key.
  • the result of the decryption is sent from the interface 132 to the interface 124 of the document 100.
  • the program instructions 130 it is then checked by the document 100 whether the result of the decryption of the cipher which has received the document from the reader 108 is identical to the random number initially generated by the document 100. If so, the reference value of the cryptographic key included in or accessible to the program instructions 130 matches the cryptographic key captured from the image display of the display 102 by the reader 108, thereby increasing the authenticity of the document 100 and the access authorization of the reader 108 is given.
  • the senor 110 may be formed as a so-called time-gated CCD sensor.
  • the electronic circuit 104 is designed such that before the start of each image repetition period, a trigger signal, for example, is sent from the interface 124 to the interface 132 of the reader 108. This can be done by executing the program instructions 131. Due to this trigger signal, the optical detection of the display 102 is started by the sensor 110.
  • the detection period is chosen so that it corresponds to the length of a refresh period.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Claims (15)

  1. Document avec un dispositif d'affichage intégré (102), une mémoire (126) pour le stockage de données (106) et des moyens d'actionnement (104) pour l'actionnement du dispositif d'affichage pour une reproduction des données, dans lequel le dispositif d'affichage comporte plusieurs éléments d'affichage (103) agencés de façon à être répartis spatialement dans le dispositif d'affichage, et dans lequel les moyens d'actionnement sont conçus de manière à ce que l'ordre d'actionnement des éléments d'affichage soit établi dans une période de répétition d'image pour la reproduction des données (106) indépendamment de l'agencement spatial des éléments d'affichage, dans lequel l'ordre d'actionnement des éléments d'affichage dans la période de répétition d'image permet de coder une information, dans lequel l'information est une marque de sécurité, une information de personnalisation et/ou une clé cryptographique, et caractérisé en ce que le document est pourvu d'une impression (114) montrant l'information sous une forme visuellement perceptible.
  2. Document avec un dispositif d'affichage intégré (102), une mémoire (126) pour le stockage de données (106) et des moyens d'actionnement (104) pour l'actionnement du dispositif d'affichage pour une reproduction des données, dans lequel le dispositif d'affichage comporte plusieurs éléments d'affichage (103) agencés de façon à être répartis spatialement dans le dispositif d'affichage, et dans lequel les moyens d'actionnement sont conçus de manière à ce que l'ordre d'actionnement des éléments d'affichage soit établi dans une période de répétition d'image pour la reproduction des données (106) indépendamment de l'agencement spatial des éléments d'affichage, dans lequel l'ordre d'actionnement des éléments d'affichage dans la période de répétition d'image permet de coder une information, caractérisé en ce que le document est pourvu d'une zone de stockage protégée pour le stockage d'autres données (127), de moyens (130) pour l'exécution d'un protocole cryptographique et d'une interface (124) reliée à un dispositif de lecture (108), dans lequel l'accès du dispositif de lecture aux autres données par le biais de l'interface suppose l'exécution du protocole cryptographique à l'aide de l'information, dans lequel l'information est une clé cryptographique ou dans lequel une clé cryptographique peut être dérivée de l'information.
  3. Document selon la revendication 1 ou 2, dans lequel les moyens d'actionnement comportant un circuit d'attaque logique (123) sont conçus pour l'actionnement des éléments d'affichage dans l'ordre d'agencement spatial, et avec des lignes de rangées et/ou de colonnes pour relier les éléments d'affichage au circuit d'attaque logique, dans lequel au moins quelques-unes des lignes de rangées et/ou de colonnes sont reliées à des éléments d'affichage indépendamment de l'ordre d'agencement spatial.
  4. Document selon la revendication 1, 2 ou 3, dans lequel les moyens d'actionnement comportant un circuit d'attaque logique (123) sont conçus pour l'actionnement des éléments d'affichage indépendamment de l'ordre de leur agencement spatial.
  5. Document selon la revendication 4, dans lequel les données sont transformées pour compenser l'écart de l'ordre d'actionnement par rapport à l'agencement spatial, pour une reproduction d'image correcte des données.
  6. Document selon l'une des revendications précédentes, avec des moyens (132) pour la transformation des données, destinés à compenser l'écart de l'ordre d'actionnement par rapport à l'agencement spatial, pour une reproduction d'image correcte des données.
  7. Document selon la revendication 6, dans lequel les données sont stockées sous forme codée, et dans lequel les moyens pour la transformation des données comportent des moyens de programme pour le décodage des données.
  8. Document selon l'une des revendications précédentes, dans lequel une information (107) est prédéfinie, selon laquelle est déterminé l'écart de l'ordre d'actionnement des éléments d'affichage par rapport à l'ordre donné par l'agencement spatial des éléments d'affichage.
  9. Document selon l'une des revendications précédentes 4 à 8, dans lequel le circuit d'attaque logique est conçu pour traiter l'information, afin de fixer le type d'écart entre l'ordre d'actionnement des éléments d'affichage et l'ordre donné par l'agencement spatial des éléments d'affichage, et dans lequel les moyens pour la transformation des données sont conçus pour traiter l'information, afin de fixer le type de transformation en fonction du type d'écart de l'ordre d'actionnement.
  10. Document selon l'une des revendications précédentes, dans lequel il s'agit d'un document de sécurité ou de valeur ou dans lequel il s'agit d'une plaque d'immatriculation électronique de véhicule automobile.
  11. Document selon l'une des revendications précédentes, avec des moyens (131) pour l'envoi d'un signal de déclenchement à un dispositif de lecture (108) au début de la période de répétition d'image.
  12. Document selon l'une des revendications précédentes, dans lequel les données (106) sont un numéro d'immatriculation de véhicule et l'information (107) est un paramètre de véhicule et/ou un statut fiscal, dans lequel les moyens d'actionnement sont conçus de telle façon, que le dispositif d'affichage est actionné pour la reproduction du numéro d'immatriculation et l'information est fournie par l'ordre d'actionnement des éléments d'affichage.
  13. Dispositif de lecture avec un document selon la revendication 2, avec un capteur (110) pour la détection de l'ordre d'actionnement des éléments d'affichage dans une période de répétition d'image, et avec des moyens (136) pour le décodage d'une information codée par l'ordre d'actionnement des éléments d'affichage.
  14. Procédé pour la vérification d'un document selon la revendication 1, avec les étapes suivantes :
    - détection d'une information contenue dans l'ordre d'actionnement des éléments d'affichage dans une période de répétition d'image,
    - comparaison de l'information avec une information de référence, dans lequel l'information de référence est l'impression (114) montrant l'information sous une forme visuellement perceptible.
  15. Procédé pour la vérification d'un document selon la revendication 2, avec les étapes suivantes :
    - détection d'une information contenue dans l'ordre d'actionnement des éléments d'affichage dans une période de répétition d'image,
    Exécution d'un protocole cryptographique à l'aide de l'information, dans lequel l'information est une clé cryptographique ou dans lequel une clé cryptographique peut être dérivée de l'information.
EP08849485.1A 2007-11-12 2008-10-02 Document à dispositif d'affichage intégré Active EP2220642B1 (fr)

Applications Claiming Priority (2)

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DE102007000889A DE102007000889B8 (de) 2007-11-12 2007-11-12 Dokument mit einer integrierten Anzeigevorrichtung
PCT/EP2008/063242 WO2009062788A1 (fr) 2007-11-12 2008-10-02 Document à dispositif d'affichage intégré

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EP2220642B1 true EP2220642B1 (fr) 2013-08-14

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DE102007000889B4 (de) 2009-12-17
EP2220642A1 (fr) 2010-08-25
DE102007000889A1 (de) 2009-05-20
WO2009062788A1 (fr) 2009-05-22

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