EP2553542A1

EP2553542A1 - Document having an electronic display device

Info

Publication number: EP2553542A1
Application number: EP11704235A
Authority: EP
Inventors: Joerg Fischer; Manfred Paeschke; Markus Tietke; Frank Fritze
Original assignee: Bundesdruckerei GmbH
Current assignee: Bundesdruckerei GmbH
Priority date: 2010-04-01
Filing date: 2011-02-18
Publication date: 2013-02-06
Also published as: KR101993137B1; DE102010003586A1; KR20130069548A; WO2011120737A1

Abstract

The invention relates to a document having a display device (102) and having processing means (105; 188) for actuating the display device for generating a display, wherein the display can be visually perceived by a user from a front side of the document, and having a touchpad (156) that can be operated from a rear face of the document by the user for inputting a signal (168) into the processing means.

Description

Document with an electronic display device

description

The invention relates to a document, such as a valuable or security document, in particular an ID document or a bank card, with an electronic display device.

Documents with an integrated electronic circuit are known in the art in various forms per se. For example, there are valuable and security documents in predominantly paper-based form, such as a banknote, as an electronic passport, or as a plastic-based chip card, in particular as a so-called smart card, in contact, contactless or dual-interface design.

In particular, various radio detection systems are known for such prior art documents, also referred to as Radio Frequency Identification (RFID) systems. Previously known RFID systems generally include at least one 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. Furthermore, 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 RFI D transponder data are made available via radio waves. At low frequencies, this happens inductively via a near field, at higher frequencies via a far-field electromagnetic field.

An RFI D transponder typically includes an icrochip and an antenna housed in a carrier or housing or printed on a substrate. Active RFI D transponders, in contrast to passive transponders, also have an energy source, such as a battery.

RFI D 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 in paper or plastic, such as in value and security documents, especially banknotes and identity documents. From DE 201 00 158 U1, for example, an identification and security card made of laminated and / or injection-molded plastics is known, which includes an integrated semiconductor with an antenna for carrying out an RFID method. From DE 0 2004 008 841 A1, a book-like value document, such as a passbook, which contains a transponder unit, is also known.

Such security or value documents may comprise an integrated display device, as e.g. from DE 10 2005 030 626 A1, DE 10 2005 030 627 A1, DE 10 2005 030 628 A1, WO 2004/080100 A1, EP 1 023 692 B1, DE 102 15 398 B4, EP 1 173 825 B1, EP 1 230 617 B1, EP 1 303 835 B1, EP 1 537 528 B1, WO 03/030096 A1, EP 0 920 675 B1, US Pat. No. 6,019,284, US Pat. No. 6,402,039 B1, WO

99/381 17 is known.

Security or value documents may be provided with a contact or contactless interface, such as an RFID interface and / or NFC interface, or with an interface allowing both wired and wireless communication with a smart card terminal. In the latter case, one speaks of so-called dual-interface smart cards. Chip card communication protocols and methods are specified, for example, in the ISO 14443 standard.

WO 2008/145505 A1, from which the present invention proceeds as the closest prior art, discloses a value or security document with a display device for reproducing an image sequence and an operating element for navigation in the image sequence, in which the For example, the control element can be a slide switch with various detent positions, a rotary knob, a touch-sensitive input field or another multifunction switch. From Baudisch, P. et al.: Back-of-Device Interaction Allows Creating Very Small Touch Devices, In. ACM CHI 2009 - New Mobile Interactions, April 9 - Boston, pp. 1923-1932, a screen device with a capacitive trackpad is known, which is located on the back of the device and which is mapped 1: 1 on the screen.

The invention is based on the object to provide an improved document with an electronic display device, in particular a value or security document.

The object underlying the invention is achieved with the features of claim 1. Embodiments of the invention are indicated in the dependent claims. According to embodiments of the invention, the document is card-shaped, for example as a chip card. The electronic display device is disposed on or in the document body of the document such that the display generated by the display device is visually perceptible by the user from the front of the document. For example, the display device is controlled by the processor means of the document for displaying textual data or other data, such as a photo, barcode and / or icon of a graphical user interface. For example, the display device is arranged on or in a document layer below the uppermost layer of the document, the uppermost layer being transparent at least in the area of the display device.

The touchpad of the document, on the other hand, is disposed on or in the document body such that it is operable from a back of the document by the user to input a signal into the processor means. For example, a touchpad sensor is disposed on or in a layer above the lowermost layer of the document forming the back of the document. By the touchpad sensor and the underlying layer or layers of the document is then formed the touchpad of the document.

Embodiments of the invention are particularly advantageous, since the area available for the display on the front side is not reduced by the touchpad, since it is arranged in the document body below the display device. Another particular advantage is that the user does not cover the display device by the operation of the touchpad from the back of the document, so that he can visually capture the entire contents of the display during the operation of the touchpad. This is particularly advantageous in the case of card-shaped documents which, for example, have a standardized chip card format, since here the available areas are small.

For example, a document according to the invention may have dimensions according to ISO 7816 or ISO 7810, and e.g. have one of the following formats:

ID-1 (check card format): 85,60 mm χ 53,98 mm,

ID-2: 105mm x 74mm,

ID-3: 125 mm 88 mm,

ID-00: 66 mm χ 33 mm,

ID-000: 25 mm 5 mm or

Visa Mini: 65.6 mm χ 40.0 mm.

The thickness of the document is less than 2 mm, preferably less than 1 mm, for example 0.76 mm.

According to one embodiment of the invention, the area detected by the touchpad on the back of the document is greater than the area occupied by the display on the front of the document. The document in this case has means for coordinate transformation between the frame of reference of the touchpad and the frame of reference of the input device. Such a coordinate transformation can be carried out by calculation, in particular a projection, or with the aid of a lookup table, which is represented by the signal of the touchpad. te input coordinates of the reference system of the touchpad in coordinates of the reference system of the display device transferred. This further facilitates the handling of the document since a relatively large path the user travels with his finger on the back of the document within the area covered by the touchpad corresponds to a relatively small path on the display device.

According to one embodiment of the invention, the lowermost layer of the document by which the backside is formed is printed. In particular when using a capacitive or resistive touchpad sensor, the lowermost layer need not be transparent, since this is not necessary for the sensing of the finger position.

According to embodiments of the invention, the document is a paper-based and / or plastic-based document, in particular a value or security document, such as an identity document, in particular a passport, identity card, visa or driving license, vehicle registration document, vehicle registration document, company card, health card or a another iD document or chip card, means of payment, in particular a banknote, bank card or credit card, a bill of lading or other proof of entitlement. For example, the document has a substrate made of paper or plastic on the further layers, e.g. are applied by printing technology.

According to embodiments of the invention, the display device is a bistable display device, an electrophoretic display, an electrochromic display, a liquid crystal display (LCD), LED display, in particular inorganic LED or organic LED display (OLED), rotary element display, Bar graph, photoluminescent erasure indicator or a display based on the electrowetting effect or a hybrid display.

A "touchpad" here means any device that detects the position of a user's finger within a surface covered by the touchpad can sense with the aid of a touchpad sensor, wherein the touchpad sensor outputs a corresponding signal, which indicates the coordinates of the detected finger position within the area detected by the touchpad. The touchpad can work according to any known sensor principle, which may require a touch or pressure of the finger on the touchpad or works without contact. For example, the touchpad can be resistive or capacitive, in particular the touchpad can also be an ulti-touch touchpad, which simultaneously enables the sensing of two or more fingers. Such touchpads are also called trackpads. Furthermore, a "touchpad" is also understood to mean a coordinate input device in which the coordinates of a stylus are detected, for example, by capacitive or electromagnetic coupling.

According to one embodiment of the invention, the display device and the touchpad form a structural unit which is arranged in or on one of the layers of the document body.

According to one embodiment of the invention, the user may use the touchpad to control the position of a cursor, i. a so-called mouse pointer displayed by the pointing device. With the aid of the cursor, for example, the user can select a specific picture element displayed on the display device. Such a picture element may be a representation of an element of a graphical user interface of the document, in particular a so-called computer icon. By selecting such an icon displayed by the display device with the aid of the cursor, the user can select a particular function associated with the icon, which is then executed by the processor means.

According to one embodiment of the invention, the document includes an electronic memory for storing a plurality of images forming an image sequence. The different images can be digital photos of the user Acts that have been taken from different directions. With the help of the touchpad, the user can then navigate along the image sequence.

According to one embodiment of the invention, the document has an operating element which can be operated by the user from the front of the document in order to input a further signal into the processor means. This operating element may be a manipuland, such as a pressure switch, a slider or the like. According to one embodiment of the invention, the user can confirm a previously actuated by means of the cursor selection by actuation of the control element, so that, for example, the execution of a respective pixel associated functionality is started by the processor means. In this way, in particular the functionality of a computer mouse can be made available in the document, wherein the actuation of the operating element is analogous to a mouse click with a computer mouse. Of particular advantage is the ease of use, since the user can operate, for example, with the index finger of his right hand on the bottom of the document the touchpad to bring the cursor on the display in the desired position, and thus to select a specific pixel whereas the user can place the thumb of his left hand on top of the front of the document to operate the front panel control.

According to one embodiment of the invention, the display device is designed as a touch screen to input a further signal into the processor means. Any known sensor principle can be used for the touchscreen, analogously to the touchpad of the document. The touch screen is designed to sense the position of a finger or stylus, which is located on the front of the document on or above the display device, and to input it into the processor means. For example, the processor means may be configured such that a virtual control element is displayed on the display device, such as a so-called button, for example, this button being activated by touching the button Display device, at the point where the button is displayed, is operated to thereby enter the further signal. In this way, a functionality can be realized which is equivalent to that of a separate operating element designed, for example, as a switch or slide.

In one embodiment, the document has a non-contact interface for powering the various electrical and electronic components of the document, particularly for powering the display device and the touchpad. The contactless interface can be designed for the inductive coupling of energy, in particular according to an RFID or NFC standard.

In the following, embodiments of the invention will be explained in more detail with reference to the drawings. 1 shows an exploded view of a first embodiment of a document according to the invention,

FIG. 2 shows a block diagram of an embodiment of the document according to the invention according to FIG. 1,

FIG. 3 shows an exploded view of a further embodiment of a document according to the invention, a block diagram of an embodiment of an inventive device

Document according to FIG. 3,

FIG. 5 shows a block diagram of an active matrix display _:

FIG. 6 is a block diagram of a surface capacitance touchpad.

FIG. 7 is a block diagram of a projected capacitance touchpad FIG. 8 is a block diagram of an Active Matrix Capacitive Touchpad;

9 shows a further embodiment of a document according to the invention with an electronic memory for storing a picture sequence.

In the following, corresponding elements of the following embodiments will be identified by identical reference numerals.

1 shows a schematic exploded view of an embodiment of a document 100 according to the invention. The document 100 is a value or security document, such as an ID document, a passport, an identity card, a driver's license, an admission card, a credential , a bank card, a credit card, a banknote or the like.

The document 100 has a document body 146 which has a layered construction. The front side of the document 100 is formed by the uppermost layer 148, which is, for example, a laminated transparent plastic cover layer. The back side of the document 100 is formed by the lowermost layer 150, which may also be a plastic laminated cover layer. The layer 150 may, for example, be printed all over.

Between the layers 148 and 150 of the document body 146 there are further layers, in particular a layer 152. The layer 152 carries a display device 102 and an electronic circuit 104, which is arranged here next to the display device 102 on or in the layer 152.

The display device 102 may be unlit, backlit, front lit or self-luminous. For example, the display device 102 is a bistable display device in which a display can be played back permanently without power supply. For example, if that If the document 100 is not supplied with energy or is deactivated, then the user's facial image, for example, can be displayed in a specific view on the bi-stable display device 102. The layer 148 is transparent at least within its area 154 which covers the display device 102 so that a user on the display device 102 can visually perceive a reproduced image from the front of the document 100 through the area 154.

In the embodiment considered here, a touchpad sensor 156 is arranged below the display device 102. Here, the touchpad sensor 156 has approximately the same shape and size as the display device 102. For example, the display device 02 may be arranged on the upper side of the layer 152 and the touchpad sensor 156 on the underside of the layer 152. However, the display device 102 and the touchpad sensor 156 may also form a structural unit or be arranged on different ones of the layers.

The touchpad sensor 156 may be a resistive or capacitive touchpad sensor. The integration of the touchpad sensor 156 in the document body 146 results in a touchpad, which in the area 158 of the

Layer 150, which covers the touchpad sensor 156, is touch-sensitive and / or proximity-sensitive, and outputs a position signal 168 (see Fig. 2) with the sensed coordinates.

The document 100 has an electronic circuit 104. The circuit 104 is designed to control the display device 102 so that a specific display is generated on the display device 02. Furthermore, the circuit 04 is configured to receive the position signal from the touchpad sensor 156.

For example, the position signal may indicate the coordinates of a position of a finger 160 of the user in the area 150 currently sensed by the touchpad sensor 156. For example, the position signal includes the XY Coordinates of the sensed position of the finger in a frame of reference of the touch pad sensor 156, here the Cartesian coordinate system 162.

The position signal is processed by the electronic circuit 104. As a result of the processing of the position signal by the circuit 104, for example, the position of a cursor displayed on the display device 102 may be changed, an image or a slide element may be selected for display on the display device 102, or another action that is currently sensed Position depends, be triggered.

FIG. 2 shows a block diagram of an embodiment of the document 100 which corresponds to the embodiment of FIG. In this embodiment, the circuit 104 includes an electronic memory 110 in which, for example, textual data 165 and / or image data 166 are stored. For the textual data 164, for example! to provide information to the owner of the document 100, i. for example, the holder of the identification document, and / or the authority issuing the document. The image data 166 may include, for example, one or more of the owner's digital facial images, a two-dimensional barcode, a symbol, or other data that may be displayed as an image on the display device 102.

For example, the image data 166 includes an image sequence consisting of the images B1-Bn, wherein a corresponding image data record is stored in the electronic memory 10 for each of the images (compare the embodiment according to FIG.

The electronic circuit 104 includes a processor 105 for executing program instructions 108. The electronic circuit 104 further includes a driver 106 through which the processor 105 can control the display device 102 to reproduce data stored in the memory 10. From the touchpad sensor 156, the processor 105 may receive the position signal 168 indicative of one or more currently sensed positions. The position signal 168 is evaluated by the processor 105 by executing the program instructions 108 to, in response to a result of the evaluation of the position signal 168, drive the display device 102 by means of the driver 106 to generate a particular display.

For example, the position signal 168 can be used to select a selection of data stored in the memory 110 for display on the display device 102. In particular, the program instructions 108 can generate a graphical user interface which contains a so-called cursor, that is, a pointer, with which, for example, certain picture elements, in particular icons, displayed on the display device can be selected. The desired position of this cursor is e.g. determined by the position of the finger 160 relative to the touchpad sensor 156 and in the form of the position signal 168 of the touchpad sensor 156 to the program instructions 108 so that they can track the display position of the cursor the position signal 168.

FIG. 3 shows a further embodiment of a document 100 according to the invention.

In this embodiment, the touchpad sensor 156 has a larger area than the display device 102. For example, the touchpad sensor 156 covers all or nearly the entire footprint of the document 100 such that the area 158 covers all or nearly the entire layer 150. In the embodiment considered here, the touchpad sensor 156 is arranged in a separate layer 170; but it can also, as is the case with the embodiment according to FIG. 1, be arranged on the layer 152 and / or form a structural unit with the display device 102.

Due to the different shape and size of the regions 158 and 154, this embodiment has its own reference system for the display device 102 defines, here a Cartesian coordinate system 172 with the coordinate axes X ¹ and Y '. A positional signal provided by the touchpad sensor 156, which includes the current X, Y coordinates of the position of the finger 160 relative to the coordinate system 162, is processed by the electronic circuit 104 such that the XY coordinates of the coordinate system 162 are corresponding X ¹ , Y 'coordinates of the coordinate system 172 are transformed. This can be done, for example, by a calculation or by means of lookup tables, where the XY coordinates of the coordinate system 162 to the X ^',' Y 'coordinates of the coordinate system 172 are displayed in the lookup table.

The enlarged area 158 has the advantage over the embodiment according to FIG. 1 that the handling of the document 100 is further facilitated. Due to the typically relatively small size of the document 100, for example in a credit card format, it may be relatively difficult for older people in particular to place the finger 160 in the area 158 in exactly the correct position in order to trigger the respective desired function of the electronic circuit 104, For example, to move the cursor to a specific position. This positioning of the finger 106 is facilitated by the enlargement of the area 158 according to the embodiment of Figure 3, since the positioning need not be so precise.

In the embodiment of FIG. 3 considered here, the document 00 further has an additional operating element 174 which can be operated by the user on the front side, ie the layer 148. The operating element 174 is, for example, a pressure switch, a slide switch or another manipulum. By operating the operating element 174, for example, a switching signal! entered into the electronic circuit 104 and processed by the latter. This switching signal can be an acknowledgment signal for a selection of a picture element previously made with the aid of a positioning of the finger 160, analogous to a mouse click with a computer mouse. The operating element In particular, 174 may have the function of an enter key. Preferably, the operating element 174 is arranged on an edge of the document 100, in particular the left or the upper edge of the layer 148, preferably on the upper left corner of the layer 148, so that a user holding the document 100 in his hands, the operating element 174th comfortably reach with the thumb of his left hand, while he operates with the index finger 160 of his right hand, the touchpad. In a left-handed version, the operating element 174 is correspondingly preferably arranged on the right or the upper edge of the layer 148, preferably on the upper right corner of the layer 148. It is also possible for an operating element 174 to be arranged in each of the left and right upper corners of the layer 148, so that the document is equally easy to handle for both left and right-handers.

FIG. 4 shows a block diagram of an embodiment of a document 100 according to the invention which corresponds to the embodiment according to FIG.

In the embodiment considered here, the program instructions 108 include a program module 176 for performing a coordinate transformation. By executing the program module 176, the XY coordinates of the position signal 168 are transferred to the X ', Y' coordinates of the coordinate system 176 and further processed by the program instructions 108, for example, to position the cursor on the display device 102 accordingly.

The program instructions 108 are here in particular also designed for processing the switching signal 178, which emits the operating element 174 when actuated by the user.

In the embodiment considered here, the document 100 does not have its own power supply, in particular no primary battery. On the other hand, the power is supplied via an interface 180 of the document 100 from an external reading device 182, which has a corresponding interface 180 '. For example, the interfaces 180, 180 'may be interfaces an RFID or NFC standard. In this case, the coupling of energy into the document 100 is inductive.

For example, the circuit 104 is formed as an RFID chip. In this case, the interface 180 has an antenna that serves both to power and to communicate with the reader 182.

The electronic circuit 104 with its various circuit components, the display device 102, the touchpad sensor 156, and / or the interface 180 may be implemented as separate electrically active elements, such as discrete devices, or may be implemented in whole or in part as a single integrated circuit be.

FIG. 5 shows a block diagram of an embodiment of the display device 102 as a so-called Active Matrix Display. In such an embodiment, the display device 102 has a matrix formed by columns and rows. At the intersection of each column line with a row line is an activation circuit 184 for a particular display element 186, i. a so-called pixel. FIG. 5 shows a detailed view of an embodiment of such an activation circuit 184. If both the row line and the column line to which the activation circuit 184 in the matrix is connected have a voltage level of logic "1", the SELECT transistor switches Activation by switching 184, so that a voltage applied to the data line voltage is applied to the display element 186, so that it is driven accordingly.

FIG. 6 shows an embodiment of a touchpad sensor 156, the surface capacitance principle being used here. The touchpad sensor 156 is connected to a control and evaluation unit, i. a touch controller 188, which supplies the position signal 168. The Touch

Controller 188 may be an integral part of touchpad sensor 156, may be formed as a separate discrete component, or may be an integral part form the electronic circuit 104. The same applies to the touch controller in the embodiment according to FIG. 7, in which case the touchpad sensor 156 operates according to the projected capacitance-sensor principle. FIG. 7 shows an embodiment of the touchpad sensor 156 as an active matrix capacitive sensor. In this embodiment, the touchpad sensor 156 has row and column lines, with a sensor circuit 190 at each intersection of a row with a column line providing a sensor signal for its corresponding sample point.

FIG. 8 shows an embodiment of such a sensor circuit 190.

Here, a line can be read out at the same time. In each case two row lines A and B are connected to a sensor circuit 190. The functionality happens in three steps. First, via the ZeiSenleitung A, the 'RESET' transistor is activated and the capacity Cp _jx loaded. Then the, RESET-

Transistor again disabled and turned off via the row line B, the 'READ' transistor. The capacitance C _pix now changes _depending on the contact. In the last step, the, READ ^! Transistor via the row line B is activated, so that the contact-dependent capacitance value C _pix via the amplification transistor AMP sen- Siert and transmitted via the column line "Sense line" to a touch controller 188, which then outputs the position signal 168 (see the embodiments of FIGS. 6 and 7).

FIG. 9 shows a further embodiment of a document 100 according to the invention. The image sequence stored in the memory 110 contains at least a first image data record B1 for reproducing a first image of the owner of the document 100, such as a face image in frontal view. Further, the image sequence includes at least a second image data set B2 for reproducing a second image of the owner, such as a face image in a side view. For example, when energy is injected into document 00 via antenna 112, the execution of program instructions 108 is automatically started. The program instructions 108 then control the driver 106 so that the image data sets B1 and B2 are reproduced in succession via the display device 102. For example, the reproduction of each of the images of the image sequence is performed for a predetermined period of, for example, 0.5 to 2 seconds before switching to the next image of the image sequence. The reproduction of the image sequence can be carried out repeatedly as long as energy is coupled into the antenna 12. The duration of the reproduction of each image of the image sequence may be fixed or selectable via a user interface, ie the touchpad or the control element 174.

The image sequence may include more images than the face image in frontal and side view. For example, the owner's face is taken from several different views, with the angle of view being varied from one view to the next. The resulting sequential image data sets can be output via the display device 102 in the form of a film sequence. Since the acceptance angle varies from one image data set to the next, this enables rapid verification of the document 100 with a high recognition probability.

In addition to the pictorial representation of a person or persons, the image data sets may include biometric features, such as individual fingerprints, or all of the owner's fingerprints, an iris image, or a signature of the owner. Furthermore, the sequence stored in the electronic memory 110 may also include one or more image data records with visually plain-text information and / or information that can only be captured by machine. This may be, for example, an indication in plain text, such as the name, address and date of birth of the holder of the document 100, visa information, transaction and status information, one-time password, and / or only a machine-detectable signal, such as Betspiel a bar code, in particular a 2D bar code, or an image signal in a visually imperceptible spectral range, an unrecognizable to the human eye repetition, an integrated digital watermarks or the like.

The document 100 may have an energy store 14 which is connected between the antenna 12 and the circuit 104. The energy store 14 can be, for example, a capacitor or a rechargeable battery.

Upon actuation of the hardware control element 174, the power supply is turned on, so that the reproduction of the image sequence starts with the images B1 to Bn. By pressing the operating element 174 again, the power supply and thus the reproduction of the picture sequence can be switched off.

If the display device 102 is designed as a bistable display device, preferably after receipt of a switch-off signal from the operating element 174, a specific image of the image sequence, such as the image B1, is reproduced on the display device, and then the power supply is switched off first. This has the advantage that even when the power supply is switched off, this image B1 remains visible on the display device.

The document 100 can have a graphical user interface 120 with one or more virtual operating elements, in particular icons. The user interface 120 may be e.g. include an operating element 124 with a zoom function. By operating the operating element 124 via the touchpad, a user of the document can enlarge the image currently displayed on the display device 102.

For this purpose, the program instructions 108 have corresponding program instructions 126 for realizing the zoom function. Particularly advantageous is a Design of the touchpad as a multitouch touchpad, as this also the particularly convenient input of gestures of the user is enabled, for example, to activate the zoom function. Alternatively or additionally, at least one of the image data sets of the bios sequence may include an enlarged detail view of one of the other images of the image sequence.

The user interface 120 may further include virtual controls 128 and 130 for navigating the user in the image sequence. By repeatedly operating the control element 128 or 130, the user may select a particular image within the bios sequence so that this desired image is displayed on the display device 102.

For example, by operating hardware power supply 174 to turn on the power supply, an operating mode is selected in which the image sequence is repetitively displayed, with each image of the sequence being displayed for a certain period of time of, for example, 0.5 to 2 seconds prior to next picture of the picture sequence is transferred. If, on the other hand, one of the virtual operating elements 124, 128 or 130 is actuated, this repetitive playback mode of the image sequence is interrupted. The image currently being reproduced on the display device 02 remains there until the user either returns to the repeating playback mode by renewed actuation of the control element 174 or selectively selects another image of the image sequence by operating one of the control elements 128 or 130.

According to one embodiment of the invention, the leons shown in FIG. 9, which represent the virtual controls 124, 128 and 130, are displayed on the display device 102 as well as a cursor, which the user can bring to a desired display position by operating the touchpad to select one of the leons. After the user has selected one of the leons with the cursor, he can make this selection by operating the operating element 174 confirm so that the function represented by that icon is triggered.

The navigation along the image sequence can also take place such that each position on the touchpad in the X direction of the coordinate system 162 is assigned a specific image of the image sequence. To select one of the images for display on the display device 102, the user then merely needs to bring his fingers 160 to a specific X position on the touchpad so that the image sequence associated with that X position is displayed. If the user then moves his finger 160 along the X axis to the left or to the right, the images of the image sequence corresponding to the different X positions are displayed. This functionality may be provided alternatively or additionally to the navigation by means of the controls 124, 128 and 130.

Symbol l iste

100 document

102 display device

104 circuit

105 processor

106 drivers

108 program instructions

110 electronic memory

112 antenna

114 energy storage

120 user interface

24 control element

126 program instructions

128 control element

130 control element

146 document body

148 shift

150 shift

152 shift

154 area

156 touchpad sensor

158 area

160 fingers

162 coordinate system

164 textual data

166 image data

168 position signal

170 shift

172 Coordinate System

174 control element Program module switching signal

interface

reader

Activation circuit Display element Touch controller Sensor circuit

Claims

P a n t a n s p r e c h e

A document comprising a display device (102) and processor means (105; 188) for driving the display device to generate a display, the display being visually perceptible by a user from a front of the document, and a touchpad (156) accessible from a back of the document by the user for inputting a signal (168) is operable in the processor means.

The document of claim 1, wherein the surface (158) of the touchpad is larger than the surface (154) of the display device, and means (176) for coordinate transformation of the signal (168) between a first reference system (162) of the touchpad and a second reference system (172) of the display device.

The document of claim 2, wherein the signal (168) includes input coordinates with respect to the first frame of reference, wherein the means for coordinate transformation is formed by the processor means to transform the input coordinates into the second frame of reference and the display means by means of the second frame of reference to control transformed input coordinates.

The document of claim 1, 2 or 3 comprising a document body (146) formed by a plurality of superimposed layers (150, 170, 52, 148), wherein the back side of the document is formed by a first one (150) of the layers the first layer is printed, and wherein the touchpad is disposed on or in a second of the layers (170), wherein the second layer is disposed above the first layer.

The document of claim 4, further comprising a third layer (152) disposed above the second layer, the display device being disposed on or in the second layer.

The document of claim 4, wherein the display device and the touchpad form a structural unit disposed on or in one of the layers (152).

7. Document according to one of the preceding claims, wherein the processor means are designed to control the display device for reproducing a cursor, wherein the cursor position on the display device is determined by the processor means with the aid of the signal.

8. Document according to one of the preceding claims, wherein the processor means for controlling the display device for the reproduction of different picture elements (124, 128, 130, B1 Bn) are formed, wherein the signal of one of the picture elements is selectable.

The document of claim 8, wherein at least one of the picture elements (124, 128, 130) is the representation of an element of a graphical user interface, in particular a computer icon.

10. Document according to claim 8 or 9, wherein a picture sequence is formed by the picture elements (B1, ..., Bn), wherein with the aid of the signal (168) a navigation along the picture sequence can take place.

A document according to any one of the preceding claims, comprising a control (174) operable by the user from the front of the document to input a further input signal to the processor means. 12, document according to claim 1, wherein it is the control element (174) to a pressure switch, a slide switch or other Manipulan- dum, by the operation of the input signal is input to the electronic circuit 104.

The document of claim 11 or 12, wherein the input signal is a confirmation signal for a selection of a picture element previously made via the touchpad. 14. Document according to claim 1 1 to 13, wherein the control element is an enter key.

15. Document according to claim 11, wherein the operating element is arranged on an edge of the front side, in particular in a right-hand side version, on the left or the upper edge of the front side, preferably on the upper left corner of the front side or in one Left-handed version the right or the upper edge of the front, preferably at the upper right corner of the front. 16. The document of claim 1 1 to 15, wherein each one operating element (174) are arranged in the left and right upper corner of the front.

17. The document of claim 1 1 to 16, wherein the operating element is arranged next to the display device.

18. Document according to one of the preceding claims, wherein the display device is designed as a touch screen to another input signal in the processor center! enter. 19. Document according to one of claims 1 1 to 18, wherein the processor means are designed so that by the further input design a previously with Hil- Fe of the signal received from the touchpad selection is confirmed.

20. Document according to one of the preceding claims with a contactless interface (180) for powering the document and / or for communication with an external reader.

21. Document according to one of the preceding claims, wherein it is a paper-based and / or plastic-based document, in particular a valuable or security document, such as an identity document, in particular a passport, identity card, visa or driver's license, vehicle registration document, vehicle registration document, Company card, health card or other ID document or chip card, means of payment, in particular a banknote, bank card or credit card, a bill of lading or other proof of entitlement.