EP1327530B1 - Method for transmitting secret information - Google Patents
Method for transmitting secret information Download PDFInfo
- Publication number
- EP1327530B1 EP1327530B1 EP02028541A EP02028541A EP1327530B1 EP 1327530 B1 EP1327530 B1 EP 1327530B1 EP 02028541 A EP02028541 A EP 02028541A EP 02028541 A EP02028541 A EP 02028541A EP 1327530 B1 EP1327530 B1 EP 1327530B1
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- European Patent Office
- Prior art keywords
- line structure
- printed
- information
- transmission carrier
- read
- 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.)
- Expired - Lifetime
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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
- B42D15/00—Printed matter of special format or style not otherwise provided for
- B42D15/02—Postcards; Greeting, menu, business or like cards; Letter cards or letter-sheets
- B42D15/025—Postcards; Greeting, menu, business or like cards; Letter cards or letter-sheets with peel-away layer hiding information
Definitions
- the invention relates to a device according to the preamble of the main claim.
- Confidential information in particular those that are sent by mail, will be; like for example the PIN number to debit cards or phones, usually sent in a glued envelope that makes it apparent to the claimant, whether the confidential information before him has already read a third party unauthorized.
- matrix printers have been used for printing, which label a paper in the envelope via a foil in the envelope, the outside of the envelope being blackened, so that no information can be read from the envelope itself. In any case, this can not be done without aids, which would be used only with greater expenditure of time.
- unauthorized access is usually caused by tearing and is therefore noticeable after a short time.
- an optically densely printed field (covered with a foil) is additionally provided with confidential information printed above it.
- the information can be read or a partial information with a located on the back information to be completed.
- the printing technique is comparatively alswenig, since it must be ensured that the information printed with film does not stand out from the dense printed field, (if not lifted even with criminal energy unauthorized persons with TESA film) and readily readable.
- the invention is therefore based on the object to provide a method that allows to make accessible secret information with previously sent to the customer, or him also presented in the same letter in a detachable place aids.
- a slightly removable silicone a so-called pressure silicone, between one after rear ejection punched out, wherein the information is printed on a transparent or translucent film, which is positioned in front of the tear-out, the film is advantageously matte and the tear-out, which is positioned behind the film having on its back the second line structure.
- the translucent or transparent adhesive film may be made accessible to visualize printed information 14 printed on the film from its rear side, the sheet, by severing a perforation 18 in the sheet while separating out a sheet section 16 located behind the film 12. If necessary, the blade section can now be the aid on which the second line structure is located after being moved at an angle and preferably after the front and rear sides have been rotated.
- the line structure may contain substantially parallel lines at least outside the areas to be read, the character representing areas and lines of different angles within the areas of the characters or the like.
- a fingertip structure as a second line structure, in particular if this is present, for example, on a passport paper in a predetermined quality. If necessary, areas of the structure can be repeated several times to achieve the necessary fineness.
- first line structure on a transparent area of a transmission carrier, and the second line structure on a separate device, which is placed underneath.
- the second line structure can also be printed on a section in the same transmission carrier for visualization of the information printed in the first line structure, and a perforation or the like. for separation, wherein only after a separation is a read-enabling position (be it another angle, be it a twisting of the front and back of one of the line structures) below or above the first line structure possible.
- first line structure is printed on a transparent area of a transmission carrier, under which a printed with Silkon printed section is detachable, on the back of the second line structure is printed, resulting in the procedure shown in the figures.
- a second line structure which carries no information and is printed on a non-transparent area of a transmission carrier.
- the information-bearing line structure may also be presented differently on a separate map or a tool that is placed under the second line structure.
- the use of a valid, decrypting, but not information-bearing structure limited to, for example, a person or a time domain (e.g., a month) is conceivable.
- the second line structure consists of finer lines with respect to the first structure, which lines run parallel to one another at least in partial areas.
- the finer the structure the weaker the moiré effect, but the greater the density at the information site and around it.
- the security can be increased since only the associated first line structure is made readable. This can be done, for example, by changing the line spacing while changing the line width. But also line length and curvature can be changed.
- a further, second line structure for application to at least one other location on the form is calculated at the same time, which with the first line structure when superimposed creates a moiré effect which allows the man-made eye to recognize and read the information-carrying areas.
- the printing process is preceded by, for each possible character, a vector-level area representation beyond the dimensions of the character, or as a bitmap to a printer memory of a graphics-capable printer. From there, it can be quickly retrieved and printed.
Abstract
Description
Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Hauptanspruches.The invention relates to a device according to the preamble of the main claim.
Aus der US 2,952,080 ist bereits eine kryptographische Vorrichtung mit bitweise vorhandenen informativen und nichtinformativen Bereichen bekannt, deren Auslesung jedoch aufwendig ist, da die Linien eines verschlüsselten Bildes zunächst in Parallelität zu bringen sind und dann unter Beibehaltung des Drehwinkels auf- und abbewegt werden müssen, bis die Information sich lesen lässt. Damit wird ein unbefugter Zugriff auf Information verhindert, wobei allerdings der Schlüssel vor unbefugtem Zugriff zu schützen ist (in einer Bank verbleibt).From US Pat. No. 2,952,080, a cryptographic device with bitwise existing informational and noninformative regions is already known, the reading of which, however, is complicated since the lines of an encrypted image must first be brought into parallelism and then moved upwards and downwards while maintaining the rotation angle until the information can be read. This prevents unauthorized access to information, although the key must be protected against unauthorized access (remains in a bank).
In einer Vielzahl von jetzt interessanten Anwendungen wird jedoch lediglich gefordert, dass es für einen Besitzer/Empfanger oder Käufer einer Information nachvollziehbar sein muss, ob eine Information zugänglich gemacht wtude oder nicht, ob also die Vertraulichkeit, daß neben u.U. dem Versender nur er sie kennt, gewahrt wurde.In a variety of applications now interesting, however, it is only required that it must be understandable for an owner / receiver or buyer of information whether information is made available or not, ie whether the confidentiality that u.U. the consignor only he knows them, was respected.
Vertrauliche Informationen, insbesondere solche, die mit der Post verschickt werden, werden; wie beispielsweise die PIN-Nummer zu EC-Karten oder Telefonen, üblicherweise in einem verklebten Umschlag verschickt, der es dem Berechtigten ersichtlich macht, ob die vertrauliche Information vor ihm bereits ein Dritter unberechtigterweise gelesen hat.Confidential information, in particular those that are sent by mail, will be; like for example the PIN number to debit cards or phones, usually sent in a glued envelope that makes it apparent to the claimant, whether the confidential information before him has already read a third party unauthorized.
Bisher werden zur Bedruckung dabei Matrix-Drucker eingesetzt, die über eine Durchschlagfolie in dem Umschlag ein in dem Umschlag befindliches Papier beschriften, wobei die Außenseite des Umschlages geschwärzt ist, so daß keine Information von dem Umschlag selber gelesen werden kann. Jedenfalls kann dies nicht ohne Hilfsmittel geschehen, die nur unter größerem Zeitaufwand einsetzbar wären. Eine vollständige Sicherheit gegen langwieriges Untersuchen des Umschlages ist bisher nicht gegeben, dennoch ist man mit dem Verfahren zufrieden, da sowohl Bankbedienstete, wie auch Postmitarbeiter, die die Umschläge kurzzeitig sehen, nicht über derartige Hilfsmittel und kriminelle Energie verfügen, um sich Zugang zu vertraulichen Informationen zu verschaffen. Ein unerlaubter Zugang wird dagegen meist durch Aufreißen erfolgen und ist daher nach kurzer Zeit bemerkbar.Up to now, matrix printers have been used for printing, which label a paper in the envelope via a foil in the envelope, the outside of the envelope being blackened, so that no information can be read from the envelope itself. In any case, this can not be done without aids, which would be used only with greater expenditure of time. There is no complete security against tedious handling of the envelope, yet one is satisfied with the process, as both bank employees and postal workers who see the envelopes for a short time do not have such resources and criminal power to gain access to confidential information To provide. On the other hand, unauthorized access is usually caused by tearing and is therefore noticeable after a short time.
Ein weiteres Verfahren ist in dem Gebrauchsmuster 299 00 808 der Anmelderin beschrieben, bei dem auch moderne Tintenstrahl- bzw. Laserdruckern ebenfalls vertrauliche Informationen drucken können, wobei ein Blatt zum Übermitteln einer vertraulichen Information genutzt wird, das es dem berechtigten Benutzer sichtbar macht, ob sich jemand Zugang zur Information verschafft hat oder nicht.Another method is described in Applicant's Utility Model 299 00 808, in which modern inkjet or laser printers can also print confidential information, using a sheet to convey confidential information that makes it visible to the authorized user someone has given access to the information or not.
Dabei wird ein optisch dicht bedrucktes Feld (mit einer Folie bedeckt) zuätzlich mit einer darüber gedruckten vertraulichen Information versehen. Nach Trennen des örtlichen Zusammenhangs kann die Information gelesen, bzw. eine Teilinformation mit einer auf der Rückseite befindlichen Information vervollständigt werden.In this case, an optically densely printed field (covered with a foil) is additionally provided with confidential information printed above it. After separating the local context, the information can be read or a partial information with a located on the back information to be completed.
Gerade letztere besonders sichere Art des Zugänglichmachens durch Verteilen der Information ist vergleichsweise aufwendig zu nutzen, sie setzt beim Benutzer ein akkurates Ausrichten der Teil-Informationen voraus.Especially the latter particularly secure way of making accessible by distributing the information is comparatively expensive to use, it requires the user to accurately align the part information.
Im übrigen ist die Drucktechnik vergleichsweise aufwenig, da sichergestellt werden muß, daß sich die mit Information bedruckte Folie nicht von dem dicht bedruckten Feld abhebt, (wenn nicht sogar bei krimineller Energie unbefugter Personen mit TESA-Film abgehoben wird) und sogleich lesbar wird.Moreover, the printing technique is comparatively aufwenig, since it must be ensured that the information printed with film does not stand out from the dense printed field, (if not lifted even with criminal energy unauthorized persons with TESA film) and readily readable.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zu schaffen, daß es erlaubt, mit zuvor an den Kunden gesandten, oder ihm auch im selben Schreiben an einem heraustrennbaren Ort dargebotenen Hilfsmitteln die geheime Information zugänglich zu machen.The invention is therefore based on the object to provide a method that allows to make accessible secret information with previously sent to the customer, or him also presented in the same letter in a detachable place aids.
Erfindungsgemäß wird dies durch ein verfahren mit den Merkmalen des Hauptanspruches gelöst. Die Unteransprüche geben dabei vorteilhafte Ausführungsformen der Erfindung wieder.This is achieved by a method having the features of the main claim according to the invention. The subclaims give advantageous embodiments of the invention.
Vorteilhaft ist, daß nun keine enge Bedruckung eines Feldes z.B. aus vielen Schriftzeichen, die übereinandergedruckt eine "wirre Linienvielfalt" bilden, nötig ist. Vielmehr wird durch sich anders bildende Moiree-striche ein deutliches Abheben der Information gegenüber dem Hintergrund erreicht.It is advantageous that no tight printing of a field, e.g. from many characters, which form a "confused line variety" on top of each other, is necessary. Rather, a differentiation of the information from the background is achieved by differently forming moiré strokes.
Es ist weiter vorteilhaft, ein leicht ablösendes Silikon, ein sogenanntes Drucksilikon, zwischen einer nach hinten ausreisbaren Ausstanzung vorzusehen, wobei die Information auf eine durchsichtige oder durchscheinende Folie aufgedruckt wird, die vor der Ausreißstelle positioniert ist, die Folie vorteilhafterweise matt ist und der Ausreißabschnitt, der hinter der Folie positioniert ist, auf seiner Rückseite die zweite Linienstruktur aufweist.It is also advantageous, a slightly removable silicone, a so-called pressure silicone, between one after rear ejection punched out, wherein the information is printed on a transparent or translucent film, which is positioned in front of the tear-out, the film is advantageously matte and the tear-out, which is positioned behind the film having on its back the second line structure.
Es ist aber nicht mehr nötig, eine verklebung der Kunststofffolie auf der Vorderseite zu erreichen, die nicht abgelöst werden kann (denn dann könnte man nach dem Stand der Technik bereits die Schlüsselinformation lesen), die jedoch andererseits jedoch das Ablösen der Rückseite von dieser Klebefolie auf der Vorderseite ermöglicht, um diese durchscheinend gegen das Licht oder nach einem Umdrehen des abgelösten Teils auf weißem Grund zu Lesen der vertraulichen Information zu nutzen.But it is no longer necessary to achieve a bonding of the plastic film on the front, which can not be detached (because then you could already read the key information in the prior art), but on the other hand, however, the detachment of the back of this adhesive film allows the front to translucent against the light or after turning over the detached part on a white background to read the confidential information.
Dennoch kann dies weiter erfolgen, damit der zur Sichtbarmachung der auf z.B. der Folie mit einem Laserdrucker oder einem Tintenstrahldrucker aufgedruckten Information hinter der Folie liegende Abschnittes, an seiner Vorderseite vollständig mit Silikon bedeckt ist, und so an seinem Ort lösbar festklebt.Nevertheless, this can be done further so that the visualization of e.g. the film with a laser printer or an inkjet printer printed information behind the film lying section, is completely covered on its front with silicone, and so removably sticks in place.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus nachfolgender Beschreibung eines bevorzugten Ausführungsbeispiels anhand der beigefügten Zeichnung. Dabei zeigt:
- Fig. 1
- eine Draufsicht eine Information tragende erste Linienstruktur,
- Fig. 2
- eine rückseitige Ansicht eines aulösbaren Abschnitts aus dem Über- mittlungsträger mit einer auf der Rückseite des Informationsträgers aufgedruckten schwachen zweiten Linienstruktur ohne Information,
- Fig. 3
- eine Darstellung der ersten vom Benutzer zu tätigenden Handlung des Herauslösens des Abschnitts,
- Fig. 4
- das sich an die Fig. 3 anschließende Einkleben des Abschnittes mit seiner zur Vorderseite gewandten zweiten Linienstruktur, und
- Fig. 5
- beispielhaft das sich auf der Vorderseite ergebende Moiree-Muster mit einer nun sichtbaren Geheinzahl (tatsächlich ist die Schwärzung der Informationsziffern stärker als die in Fig. 1 und weist gegenüber der Umgebung im mittleren ovalen Bereich in der Richtung veränderte Moireéstriche auf, während die Schwärzung im ovalen Bereich im wesentlichen ebenso wie im rechteckigen äußeren ist).
- Fig. 1
- a top view information bearing first line structure,
- Fig. 2
- a back view of an extractable section from the overview medium carrier with a printed on the back of the information carrier weak second line structure without information,
- Fig. 3
- a representation of the first act to be taken by the user to detach the section,
- Fig. 4
- adhering to FIG. 3 gluing of the section with its front-facing second line structure, and
- Fig. 5
- by way of example, the moiré pattern resulting on the front side now has a visible number (in fact, the blackening of the information numerals is stronger than that in FIG. 1 and has moiré marks in the direction in the middle oval region in relation to the surroundings, while the blackening is in the oval Area is substantially the same as in the rectangular outer).
Das Blatt zum Übermitteln einer geheimen Information, die bevorzugte Vorrichtung nach Anspruch 5 und dem auf 5 rückbezogenen Anspruch 8 weist in sich selbst einen Abrißabschnitt, nach dessen Entfernung ein Lesezugang zu der vertraulichen Information geschaffen ist, auf, wobei mit einem Laserdrucker oder einem anderen lediglich eine Oberfläche mit Farbe bedeckenden Drucker eine durchscheinende Folie 12 bedruckt ist, die oberhalb eines Abschnitts aufgebracht ist, der wiederum mit einem Silikon bedruckt ist. Die Folie scheint dabei wenigstens in Teilbereichen durch.The secret information transmitting sheet, the preferred apparatus of claim 5, and claim 8 referring back to claim 5, in themselves have a tear-away portion, after which removal is provided read access to the confidential information, with only one laser printer or another a surface with color-covering printer is printed a
Die durchscheinende oder transparente Klebefolie kann zur Sichtbarmachung einer auf die Folie aufgedruckten Information 14 von ihrer Rückseite, dem Blatt hez zugänglich gemacht werden, indem eine Perforation 18 im Blatt unter Heraustrennung eines hinter der Folie 12 liegenden Blatt-Abschnitts 16 zertrennt wird. Der Blattabschnitt kann nun ggf. nach einem Verschieben im Winkel und bevorzugt nach einem Verdrehen von Vorder- und Rückseite das Hilfsmittel sein, auf dem sich die zweite Linienstruktur befindet.The translucent or transparent adhesive film may be made accessible to visualize printed
Das gegenüber den Stand der Technik wesentlich sicherere Verfahren zum Übermitteln einer geheimen Information kann aber auch mit anderen Hilfmitteln arbeiten, ohne die ein Lesezugang zu der vertraulichen Information nicht möglich ist. Diese Hilfsmittel können separat vorhanden sein (z.B. als Linienstruktur ohne Information auf einer teilweise durchsichtigen Kreditkarte o.dgl.) oder als per email gesandte Linienstruktur, die auf einem Monitor vorbekannter Größe dargeboten wird, speziell für das Entschlüsseln übermittelt werden.The over the prior art much safer method for transmitting a secret information can also work with other tools without which a read access to the confidential information is not possible. These tools may be provided separately (e.g., as a line structure without information on a partially transparent credit card or the like) or as an e-mailed line structure presented on a monitor of known size, specifically for decryption.
Lediglich zur Nutzung vorbekannter Formularblätter wird im folgenden das Verfahren mit einem herausreißbaren Abschnitt beschrieben, bei dem ein im wesentlichen mit einem Muster gleichmäßig geschwärzt bedruckter Bereich eine erste Linienstruktur aufweist, die in den abzulesenden, ein Zeichen o.dgl. der Information bildenden Bereichen eine Änderung erfahren haben, die durch Auf- oder Unterlegen einer zweiten Linienstruktur sich lesbar für das menschliche Auge abzeichnet.Only for the use of prior art form sheets, the method will be described below with a herausraißbaren section in which a substantially uniformly printed with a pattern printed area has a first line structure in the to read, a character or the like. have undergone a change in the information-forming areas, which is legible for the human eye by laying or placing a second line structure.
Dabei kann die Linienstruktur im wesentlichen parallele Linien wenigstens außerhalb der abzulesenden, die Zeichen darstellenden Bereiche enthalten und Linien anderen Winkels innerhalb der Bereiche der Zeichen o.dgl. Es ist aber auch denkbar, eine Fingabdruckstruktur als zweite Linienstruktur vorzusehen, insbesondere dann, wenn diese bspw. auf einem Ausweispapier in vorbestimmter Qualität vorliegt. Ggf können Bereiche der Struktur mehrmals wiederholt werden, um zur nötigen Feinheit zu kommen.In this case, the line structure may contain substantially parallel lines at least outside the areas to be read, the character representing areas and lines of different angles within the areas of the characters or the like. However, it is also conceivable to provide a fingertip structure as a second line structure, in particular if this is present, for example, on a passport paper in a predetermined quality. If necessary, areas of the structure can be repeated several times to achieve the necessary fineness.
In einer ersten Ausführung wird vorgeschlagen, die erste Linienstruktur auf einen durchsichtigen Bereich eines Übermittlungsträgers zu drucken, und die zweite Linienstruktur auf einem separaten Hilfsmittel, das daruntergelegt wird.In a first embodiment, it is proposed to print the first line structure on a transparent area of a transmission carrier, and the second line structure on a separate device, which is placed underneath.
Die zweite Linienstruktur kann aber auch auf einen Abschnitt im selben Übermittlungsträger zur Sichtbarmachung der in der ersten Linienstruktur aufgedruckten Information aufgedruckt sein, und eine Perforation o.dgl. zur Heraustrennung besitzen, wobei erst nach einem Heraustrennen eine das Ablesen ermöglichende Lage (sei es ein anderer Winkel, sei es ein Verdrehen von Vorder- und Rückseite einer der Linienstrukturen) unter oder über der ersten Linienstruktur möglich ist.However, the second line structure can also be printed on a section in the same transmission carrier for visualization of the information printed in the first line structure, and a perforation or the like. for separation, wherein only after a separation is a read-enabling position (be it another angle, be it a twisting of the front and back of one of the line structures) below or above the first line structure possible.
Falls die erste Linienstruktur auf einem durchsichtigen Bereich eines Übermittlungsträgers gedruckt ist, unter dem ein mit Silkon bedruckter Abschnitt heraustrennbar ist, auf dessen Rückseite die zweite Linienstruktur aufgedruckt ist, ergibt sich das in den Figuren dargestellte Vorgehen.If the first line structure is printed on a transparent area of a transmission carrier, under which a printed with Silkon printed section is detachable, on the back of the second line structure is printed, resulting in the procedure shown in the figures.
Dabei wird eine zweite Linienstruktur verwendet, die keine Information trägt und auf einem nicht durchsichtigen Bereich eines Übermittlungsträgers gedruckt ist. Es kann aber auch ebenso anders die informationstragende Linienstruktur auf einer separaten Karte oder einem Hilfsmittel dargeboten werden, die unter die zweite Linienstruktur gelegt wird. Die Verwendung einer beispielsweise auf eine Person oder in einem Zeitbereich (z.B. einem Monat) beschränkt gültige, entschlüsselnde, jedoch keine Information tragenden Struktur ist denkbar.In this case, a second line structure is used which carries no information and is printed on a non-transparent area of a transmission carrier. However, the information-bearing line structure may also be presented differently on a separate map or a tool that is placed under the second line structure. The use of a valid, decrypting, but not information-bearing structure limited to, for example, a person or a time domain (e.g., a month) is conceivable.
Es wird weiter vorgeschlagen, die erste Linienstruktur spiegelverkehrt auf einen rückseitigen Bereich eines doppelseitig bedruckten Übermittlungsträgers aufzudrucken, der von vorn durch einen durchsichtigen Bereich ein Lesen ermöglicht.It is further proposed to print the first line structure mirror-inverted on a rear area of a double-sided printed transmission carrier, which allows reading from the front through a transparent area.
Weiter hat sich als vorteilhaft herausgestellt, daß die zweite Linienstruktur aus gegenüber der ersten Struktur feineren Linien besteht, die wenigstens in Teilbereichen parallel zueinander verlaufen. Je feiner die Struktur umso schwächer ist der Moireéeffekt, aber umso größer ist die Schwärzung am Ort der Information und um diese herum.It has also been found to be advantageous that the second line structure consists of finer lines with respect to the first structure, which lines run parallel to one another at least in partial areas. The finer the structure, the weaker the moiré effect, but the greater the density at the information site and around it.
Wenn bei jedem Druckvorgang die zweite Linienstruktur auf den Verlauf der ersten Linienstruktur abgestimmt wird, kann die Sicherheit erhöht werden, da dann nur die zugehörige erste Linienstruktur lesbar gestaltet wird. Dies kann z.B. durch Verändern des Linienabstandes bei gleichzeitiger Veränderung der Linienbreite geschehen. Aber auch Linienlänge und Krümmung können geändert werden.If the second line structure is matched to the course of the first line structure during each printing process, the security can be increased since only the associated first line structure is made readable. This can be done, for example, by changing the line spacing while changing the line width. But also line length and curvature can be changed.
Schließlich wird vorgeschlagen, ein Computerprogramm zum ortsgenauen Bedrücken einzelner Bereiche eines Formularblattes mit durchsichtigen Bereichen zu verwenden, bei dem eine erste Linienstruktur in Information tragenden Bereichen einer vorbestimmten Druckfläche mit einem veränderten Winkel berechnet und an einen graphikfähigen Drucker gesandt wird, wobei in der vorbestimmten Druckfläche die Schwärzung gegenüber Nachbarbereichen für das menschliche Auge nicht verändert ist.Finally, it is proposed to use a computer program for locally printing individual areas of a form sheet with transparent areas, in which a first line structure is calculated in information-carrying areas of a predetermined printing area with a different angle and sent to a graphics-capable printer, wherein in the predetermined printing area Blackening to neighboring areas to the human eye is not changed.
Bevorzugt wird gleichzeitig eine weitere, zweite Linienstruktur zur Aufbringung an wenigstens einem anderem Ort auf dem Formular berechnet, die mit der ersten Linienstruktur bei Übereinanderbetrachtung einen Moiree-Effekt entstehen läßt, der es dem manschlichen Auge ermöglicht, die informationstragenden Bereiche zu erkennen und zu lesen.At the same time, a further, second line structure for application to at least one other location on the form is calculated at the same time, which with the first line structure when superimposed creates a moiré effect which allows the man-made eye to recognize and read the information-carrying areas.
Um die Zeit zu verringern, die zum Drucken der Darstellungen auf den Formularen benötigt wird, wird dem Druckvorgang vorausgehend für jedes mögliche Zeichen eine über die Dimensionen des Zeichens hinausgehende Flächendarstellung in Vektordarstellung oder als Bitmap an einen Druckerspeicher eines graphikfähigen Druckers gesandt. Von dort kann sie schnell abgerufen und gedruckt werden.To reduce the time required to print the representations on the forms, the printing process is preceded by, for each possible character, a vector-level area representation beyond the dimensions of the character, or as a bitmap to a printer memory of a graphics-capable printer. From there, it can be quickly retrieved and printed.
Claims (4)
- Device for transmitting a secret information with the aid of a portion (16), reading access to the secret information being impossible without special aids and having- a transmission carrier,- a translucent area (10) of the transmission carrier printed with a pattern and which has a first line structure,- the first line structure is printed on the translucent area of the transmission carrier,- the first line structure having in the areas to be read and forming an information character (12) or the like has a modification which can be made readable by placing a second line structure (14) below it,- the area printed with a pattern is printed in substantially uniformly blackened manner,- the first line structure (10) comprises essentially parallel lines,characterized in that- the first line structure (10) is formed by lines having a different angle in the areas containing the information characters or the like and- the second line structure is printed on such a portion (16) in the same transmission carrier and has a perforation for separation purposes,a position below or above the first line structure (10) permitting reading only being possible following separation.
- Device according to claim 1, characterized in that the first line structure (10) printed on the translucent area of the transmission carrier can be separated below a silicone-printable portion (16) and on whose back surface is printed the second line structure (14).
- Device according to one of the preceding claims, characterized in that the second line structure (14) has finer lines than the first structure and which are parallel to one another.
- Device according to one of the preceding claims, characterized in that the second line structure (14) comprises line structures matched to the first line structure (10) and only render readable an associated, first line structure (10).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10201263 | 2002-01-15 | ||
| DE10201263 | 2002-01-15 | ||
| DE10222817 | 2002-05-21 | ||
| DE10222817A DE10222817A1 (en) | 2002-01-15 | 2002-05-21 | Method for transmitting secret information |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1327530A2 EP1327530A2 (en) | 2003-07-16 |
| EP1327530A3 EP1327530A3 (en) | 2004-10-13 |
| EP1327530B1 true EP1327530B1 (en) | 2006-04-12 |
Family
ID=26010928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02028541A Expired - Lifetime EP1327530B1 (en) | 2002-01-15 | 2003-01-01 | Method for transmitting secret information |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1327530B1 (en) |
| AT (1) | ATE322991T1 (en) |
| DE (1) | DE50302924D1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBS20070078A1 (en) * | 2007-06-07 | 2008-12-08 | Poligrafica S Faustino S P A | CUTTING, IN PARTICULAR FOR COMPETITIONS |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2952080A (en) * | 1957-09-12 | 1960-09-13 | Teleregister Corp | Cryptic grid scrambling and unscrambling method and apparatus |
| US5184849A (en) * | 1991-05-07 | 1993-02-09 | Taylor Geoffrey L | Security system method and article for photocopiers and telefax machines |
| AUPP027397A0 (en) * | 1997-11-07 | 1997-12-04 | Documotion Research, Inc. | Tamper-evident form for securely carrying confidential information |
-
2003
- 2003-01-01 EP EP02028541A patent/EP1327530B1/en not_active Expired - Lifetime
- 2003-01-01 DE DE50302924T patent/DE50302924D1/en not_active Expired - Lifetime
- 2003-01-01 AT AT02028541T patent/ATE322991T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE322991T1 (en) | 2006-04-15 |
| DE50302924D1 (en) | 2006-05-24 |
| EP1327530A3 (en) | 2004-10-13 |
| EP1327530A2 (en) | 2003-07-16 |
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