DE4334537A1 - Transponder - Google Patents

Transponder

Info

Publication number
DE4334537A1
DE4334537A1 DE19934334537 DE4334537A DE4334537A1 DE 4334537 A1 DE4334537 A1 DE 4334537A1 DE 19934334537 DE19934334537 DE 19934334537 DE 4334537 A DE4334537 A DE 4334537A DE 4334537 A1 DE4334537 A1 DE 4334537A1
Authority
DE
Germany
Prior art keywords
memory
transponder
code
transponder according
memory content
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.)
Withdrawn
Application number
DE19934334537
Other languages
German (de)
Inventor
Johannes Hecht
Werner Bloch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG Identifikationssysteme GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19934334537 priority Critical patent/DE4334537A1/en
Publication of DE4334537A1 publication Critical patent/DE4334537A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F7/00Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1008Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073Special arrangements for circuits, e.g. for protecting identification code in memory
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/30Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/34Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
    • G06Q20/341Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/30Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/34Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
    • G06Q20/352Contactless payments by cards
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00Payment architectures, schemes or protocols
    • G06Q20/38Payment protocols; Details thereof
    • G06Q20/40Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/409Device specific authentication in transaction processing
    • G06Q20/4093Monitoring of device authentication
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07BTICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/02Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F7/00Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/0806Details of the card
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F7/00Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/0866Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by active credit-cards adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Theoretical Computer Science (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Finance (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

It is proposed to provide a transponder with a usable memory having an additional code memory which enables a change to be made to the memory content of the usable memory if a received change signal contains a code marking which matches the memory content of the code memory.

Description

Die vorliegende Erfindung betrifft einen Transponder nach dem Oberbegriff des Patentanspruches 1.The present invention relates to a transponder the preamble of claim 1.

Ein solcher Transponder mit dazugehörigem Lesegerät ist z. B. in in dem Prospekt "Elektronische Identifikation Sy­ stem Trovan" der Firma AEG Aktiengesellschaft, Ulm vom Juni 1992 beschrieben. Der dort beschriebene Transponder besitzt einen Festkodespeicher als Nutzspeicher.Such a transponder with associated reader is e.g. B. in the prospectus "Electronic Identification Sy stem Trovan "from AEG Aktiengesellschaft, Ulm from June 1992. The transponder described there has a fixed code memory as useful memory.

Für viele Anwendungszwecke, z. B. für die Anwendung des Transponders als zeitlich begrenzte Fahrkarte (Monats­ karte) oder als Eintrittskarte (Skipaß) wäre es wünschens­ wert zusätzlich zu den bisherigen Verwendungs­ möglichkeiten den Nutzspeicher der Transponder wenigstens teilweise verändern zu können. Dabei soll die Veränderung nur Berechtigten möglich sein. Beispielsweise wäre es er­ wünscht, daß von einem Berechtigten eine Fahrkarte für den Monat Mai abgeändert werden kann als Fahrkarte für den Mo­ nat Juni. Das Auslesen des Nutzspeichers soll nach wie vor von einem einfachen Lesegerät möglich sein, das z. B. am Eingang eines Busses installiert ist und den diesen Trans­ ponder als Fahrkarte tragenden Benutzer auf die berech­ tigte Benutzung überprüft.For many applications, e.g. B. for the application of Transponders as a temporary ticket (monthly card) or as an admission ticket (ski pass) it would be desirable worth in addition to the previous use  Possibilities the useful memory of the transponders at least to be able to change partially. The change is meant to be only authorized persons are possible. For example, it would be him wishes a person entitled to a ticket for the The month of May can be changed as a ticket for Mon. nat June. The readout of the useful memory should still be be possible by a simple reader that z. B. on Input of a bus is installed and this trans ponder as a ticket-carrying user to the calc checked usage.

Von wesentlicher Bedeutung ist dabei, daß das Auslesen des Nutzungsspeichers berührungslos über relativ größere Ent­ fernung erfolgen kann, so daß z. B. ein einsteigender Fahr­ gast die Fahrkarte, also den Transponder, nicht unbedingt in eine spezielle Lage bringen muß und schon garnicht in ein Gerät einführen muß. Die Abfertigung wird dadurch ver­ einfacht und beschleunigt, insbesondere dann, wenn der Fahrgast die Fahrkarte noch nicht einmal aus der Tasche nehmen muß.It is essential that the reading of the Usage memory contactlessly over relatively larger Ent distance can be done so that z. B. a boarding ride not necessarily the ticket, i.e. the transponder in a special position and certainly not in must introduce a device. The clearance is thereby ver simplifies and accelerates, especially if the Passenger does not even have the ticket out of his pocket must take.

Die Aufgabe der Erfindung wird darin gesehen einen Trans­ ponder eingangs genannter Art so zu verbessern, daß eine Veränderung des Speicherinhalts des Nutzspeichers durch einen Berechtigten möglich ist, wobei nur der Berechtigte in der Lage ist, eine in Transponder integrierte Ände­ rungssperre auszuschalten.The object of the invention is seen in a trans to improve ponder of the type mentioned so that a Change in the memory content of the useful memory by an authorized person is possible, whereby only the authorized person is able to change a transponder switch off.

Diese Aufgabe wird durch die Merkmale des Kennzeichens des Patentanspruches 1 gelöst. Fortschrittliche Weiterbildun­ gen der Erfindung finden sich in Unteransprüchen.This task is characterized by the characteristics of the license plate Claim 1 solved. Advanced training gene of the invention can be found in the dependent claims.

Anhand des in der Figur schematisch dargestellten Ausfüh­ rungsbeispieles wird die Erfindung nachfolgend näher er­ läutert.Based on the embodiment shown schematically in the figure Rungsbeispieles the invention he below purifies.

Die Figur zeigt im Prinzip die elektronische Teile eines Transponders, die üblicherweise mit Ausnahme der Antennen­ anordnung auf einem Halbleiterchip integriert sind. Ein solcher Transponder kann ein flaches Bauteil sein, das auf einer Karte oder dergleichen angeordnet ist oder er kann eine inplantierbare Kapsel sein. Zum Betrieb wird er ver­ anlaßt durch ein in die Antennenanordnung induktiv einge­ koppeltes elektromagnetisches Feld, das nicht nur die Be­ triebssignale sondern auch die Gleichenergie zur Gleich­ stromversorgung des Transponders liefert.The figure shows in principle the electronic parts of a Transponders, usually with the exception of the antennas arrangement are integrated on a semiconductor chip. A such transponder can be a flat component that is based on a card or the like is arranged or he can an implantable capsule. It is used for operation causes inducted into the antenna arrangement coupled electromagnetic field that not only the loading drive signals but also the same energy to the same supplies power to the transponder.

Mit 1 ist die Antennenanordnung bezeichnet die zum einen das elektromagnetische Feld aufnimmt und zum anderen die abgefragte Information abstrahlt. In elektromagnetischer Korrespondenz mit dem Transponder steht ein Lese-und/oder Schreibgerät, das die elektromagnetischen Wellen zum Be­ trieb des Transponders aus sendet und die von diesem abgestrahlten elektromagnetischen Wellen aufnimmt. 1 designates the antenna arrangement which on the one hand receives the electromagnetic field and on the other hand emits the requested information. In electromagnetic correspondence with the transponder there is a reading and / or writing device which transmits the electromagnetic waves for operating the transponder and receives the electromagnetic waves emitted by the transponder.

Der Transponder enthält weiterhin ein von der aufgenomme­ nen HF-Energie betriebenes Stromversorgungsteil 2, einen Frequenzteiler 3, einen Modulator 4, einen Nutzspeicher 5 dessen Speicherinhalt veränderbar ist und einen Datensen­ der 7. Der Frequenzteiler 3 erzeugt die Transponder-Sen­ derfrequenz die zweckmäßig die halbe Empfangsfrequenz des vom Lesegerät abgestrahlten HF-Signals ist. Im Modulator 4 wird die Transpondersendefrequenz mit den Daten des Nutz­ speichers 5 moduliert und von dem Datensender 7 auf die Antennenanordnung 1 zur Abstrahlung geleitet.The transponder further includes a NEN-housed by the RF energy powered power supply part 2, a frequency divider 3, a modulator 4, a useful memory 5 whose memory contents can be changed and the Datensen. 7 The frequency divider 3 generates the transponder sensor frequency which is expediently half the reception frequency of the RF signal emitted by the reader. In the modulator 4 , the transponder transmission frequency is modulated with the data of the useful memory 5 and passed from the data transmitter 7 to the antenna arrangement 1 for radiation.

Gemäß der Erfindung ist nun in dem Transponder ein weite­ rer Speicher als Codespeicher 6 vorgesehen, der zweckmäßig ebenfalls auf dem Chip integriert ist und der Gleichstrom mäßig ebenfalls von dem Stromversorgungsteil 2 versorgt wird. Der Speicherinhalt des Codespeichers 6 ist nicht auslesbar. Er hat die Wirkung eines Filters derart, daß ein mit einem Codevermerk versehenes ankommendes Signal zur Veränderung des Speicherinhalts des Nutzspeichers 5 nur dann eine Veränderung des Nutzspeicherinhalts bewirken kann, wenn der Codevermerk des Veränderungssignals von dem Speicherinhalt des Codespeichers 6 akzeptiert wird.According to the invention, a wide rer memory is now provided as code memory 6 in the transponder, which is also advantageously integrated on the chip and the direct current is also moderately supplied by the power supply part 2 . The memory content of the code memory 6 cannot be read out. It has the effect of a filter such that an incoming signal provided with a code note for changing the memory content of the useful memory 5 can only cause a change in the useful memory content if the code note of the change signal is accepted by the memory content of the code memory 6 .

Der Speicherinhalt des Code-Speichers 6 ist nicht ausles­ bar, d. h. die Sendefrequenz des Transponders ist mit dem Inhalt des Codespeichers 6 nicht modelierbar. Dagegen kann es zweckmäßig sein, daß der Speicherinhalt des Codespei­ chers 6 durch ein ankommendes Signal ein oder mehrere Male verändert werden kann und zu einem gewünschten Zeitpunkt durch ein entsprechend codiertes ankommendes Signal eine weitere Veränderung des Codespeichereinhalts blockiert wird.The memory contents of the code memory 6 is not ausles bar, ie the transmission frequency of the transponder is not modelierbar with the contents of the code memory. 6 In contrast, it may be expedient that the memory content of the Codespei chers 6 can be changed one or more times by an incoming signal and at a desired time a further change in the code memory content is blocked by an appropriately coded incoming signal.

Der Codespeicher 6 kann z. B. als ein laserprogrammiertes Diodenarray mit Filterfunktionen (z. B. Komperator) reali­ siert sein. Ein Vorteil des Codespeichers 6 besteht darin, daß er einfach integrierbar ist und zum Betrieb wenig Strom bracht. Dies ist für einen derartigen Transponder, der seine Gleichstromenergie aus dem ankommenden HF-Signal bezieht, äußerst wichtig, denn die praktische Einsatzfä­ higkeit eines solchen Transponders wird wesentlich erwei­ tert, wenn das Lesegerät einen größeren Abstand vom Trans­ ponder haben kann. Denn andererseits darf die vom Lesege­ rät abgestrahlte HF-Energie nicht so groß sein, daß sie schädlich sein kann.The code memory 6 can e.g. B. as a laser-programmed diode array with filter functions (z. B. comparator) be realized. An advantage of the code memory 6 is that it is easy to integrate and requires little current to operate. This is extremely important for such a transponder, which draws its direct current energy from the incoming RF signal, because the practical usability of such a transponder is substantially expanded when the reader can have a greater distance from the trans ponder. On the other hand, the RF energy emitted by the reader must not be so great that it can be harmful.

Claims (11)

1. Transponder, mit einer Empfangs-und Sendeantenne der mittels von einem Lese-und/oder Schreibgerät ausgesandten elektromagnetischen Felder betreibbar ist und der einen Nutzspeicher aufweist, dessen Speicherinhalt veränderbar und auslesbar ist, dadurch gekennzeichnet, daß ein zusätzlicher Codespeicher vorgesehen ist, dessen Speicherinhalt von außen nicht auslesbar ist und der ein Verändern des Speicherinhalts des Nutzungsspeichers durch ein Schreibgerät nur dann zuläßt, wenn das Schreibgerät außer dem Schreibsignal ein entsprechend auf den Speicher­ inhalt des Codespeichers abgestimmtes zusätzliches Codesi­ gnal aussendet.1. Transponder with a receiving and transmitting antenna which can be operated by means of electromagnetic fields emitted by a reading and / or writing device and which has a useful memory whose memory content can be changed and read, characterized in that an additional code memory is provided, the memory content of which is not readable from the outside and which allows a change in the memory content of the usage memory by a writing device only if the writing device transmits an additional code signal coordinated with the memory content of the code memory in addition to the write signal. 2. Transponder nach Anspruch 1 daß der Codespeicher ein nicht veränderbarer Speicher ist.2. Transponder according to claim 1 that the code memory  is unchangeable memory. 3. Transponder nach Anspruch 2 daß der nicht veränderbare Codespeicher ein laserprogrammiertes Dioden-array ist.3. Transponder according to claim 2 that the non-changeable Code memory is a laser-programmed diode array. 4. Transponder nach Anspruch 1 daß der Speicherinhalt des Codespeichers von außen veränderbar ist und die Veränder­ barkeit durch Eingabe einer Schreibsperrinformation auf­ hebbar ist.4. Transponder according to claim 1 that the memory content of the Code memory is changeable from the outside and the changes availability by entering write lock information is liftable. 5. Transponder nach einem der Ansprüche 1 bis 4 , dadurch gekennzeichnet, daß ein weiterer Nutzspeicher vorgesehen ist, dessen Speicherinhalt veränderbar ist und dessen Aus­ lesebarkeit durch eine Codesperre beschränkbar ist.5. Transponder according to one of claims 1 to 4, characterized characterized in that a further useful memory is provided whose memory content can be changed and whose off readability can be limited by a code lock. 6. Transponder nach einem der Ansprüche 1 bis 5 gekenn­ zeichnet durch die Ausbildung als Berechtigungsausweis für die Benutzung von Verkehrsmitteln oder als Eintrittskar­ ten.6. Transponder according to one of claims 1 to 5 marked characterized by training as a credential for the use of transport or as an entry ticket ten. 7. Transponder nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß er einen Frequenzteiler aufweist der die Empfangsgrundfrequenz ganzzahlig teilt, insbesondere halbiert und diese geteilte Empfangsgrundfrequenz die Sen­ dergrundfrequenz des Transponders ist.7. Transponder according to one of claims 1 to 6, characterized characterized in that it has a frequency divider divides the reception fundamental frequency as an integer, in particular halved and this shared reception frequency the Sen is the fundamental frequency of the transponder. 8. Transponder nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Empfangs-und Sendeantenne als ein Bauteil ausgebildet ist.8. Transponder according to one of claims 1 to 7, characterized characterized in that the receiving and transmitting antenna as one Component is formed. 9. Transponder nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Empfangsfrequenz des Transponders im Langwellenbereich unterhalb des Rundfunk-Langwellenbe­ reich liegt.9. Transponder according to one of claims 1 to 8, characterized characterized in that the receiving frequency of the transponder  in the long wave range below the broadcast long wave is rich. 10. Transponder nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Speicherinhalt des Nutzspeichers durch ein Lesegerät ohne Übertragung eines Codesignals auslesbar ist.10. Transponder according to one of claims 1 to 9, characterized characterized in that the memory content of the useful memory by a reader without transmitting a code signal is readable. 11. Transponder nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Speicherinhalt des Nutzspeicher erst nach Übertragung eines Codesignals auslesbar ist.11. Transponder according to one of claims 1 to 9, characterized characterized in that the memory content of the useful memory can only be read out after transmission of a code signal.
DE19934334537 1993-10-09 1993-10-09 Transponder Withdrawn DE4334537A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934334537 DE4334537A1 (en) 1993-10-09 1993-10-09 Transponder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934334537 DE4334537A1 (en) 1993-10-09 1993-10-09 Transponder

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Publication Number Publication Date
DE4334537A1 true DE4334537A1 (en) 1995-04-13

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548778A1 (en) * 1995-12-23 1996-08-14 Jan Goernemann Vehicle bulkhead arrangement for installing driving controls
DE19523654A1 (en) * 1995-06-29 1997-01-02 Sel Alcatel Ag Fraud-proof equipment identification method
DE19604206A1 (en) * 1996-02-06 1997-08-07 Martin Ulrich Secure data transmitting transponder
DE19611632A1 (en) * 1996-03-25 1997-10-02 Deutsche Telekom Ag Off-line data stations with virtual on-line capability
DE19616152A1 (en) * 1996-04-23 1997-11-27 Deutsche System Technik Portable infrared miniature receiver
DE19743829A1 (en) * 1997-10-04 1999-04-08 Meto International Gmbh System for providing counterfeit-proof information about an article
DE19753619A1 (en) * 1997-10-29 1999-05-06 Meto International Gmbh Identification tag with radio frequency identification transponder
US6164551A (en) * 1997-10-29 2000-12-26 Meto International Gmbh Radio frequency identification transponder having non-encapsulated IC chip
WO2003065303A1 (en) * 2002-01-28 2003-08-07 Tedeus Ag Transponder, strip material with transponder and commodities with transponders

Citations (9)

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Publication number Priority date Publication date Assignee Title
DE3009179A1 (en) * 1980-03-11 1981-09-24 Brown, Boveri & Cie Ag, 6800 Mannheim METHOD AND DEVICE FOR GENERATING THE REPLY SIGNAL OF A DEVICE FOR AUTOMATICALLY IDENTIFYING OBJECTS AND / OR LIVING BEINGS
DE3313481C2 (en) * 1983-04-14 1985-02-14 Daimler-Benz Ag, 7000 Stuttgart Device for marking and identifying motor vehicles
DE3243758C2 (en) * 1982-11-26 1985-08-22 Brown, Boveri & Cie Ag, 6800 Mannheim Method for increasing the protection against forgery of an identity card
WO1990005960A1 (en) * 1988-11-22 1990-05-31 Cryptag Limited Programmable transponder
DE3928107A1 (en) * 1989-08-25 1991-02-28 Kloeckner Moeller Elektrizit METHOD FOR CODING AND AVAILABILITY OF A CHIP CARD
DE4125746A1 (en) * 1990-08-03 1992-02-06 Bio Medic Data Systems Inc MONITORING SYSTEM FOR PROGRAMMABLE, IMPLANTABLE TRANSPONDER
DE4003410C2 (en) * 1990-02-05 1992-04-16 Anatoli 3013 Barsinghausen De Stobbe
DE4109114A1 (en) * 1991-03-20 1992-09-24 Eurosil Electronic Gmbh Controlling ownership of movable object e.g. wrist-watch - has in-built memory to store ownership and guarantee data obtained from smart card
DE4100151C2 (en) * 1990-06-15 1993-03-18 Mitsubishi Denki K.K., Tokio/Tokyo, Jp

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009179A1 (en) * 1980-03-11 1981-09-24 Brown, Boveri & Cie Ag, 6800 Mannheim METHOD AND DEVICE FOR GENERATING THE REPLY SIGNAL OF A DEVICE FOR AUTOMATICALLY IDENTIFYING OBJECTS AND / OR LIVING BEINGS
DE3243758C2 (en) * 1982-11-26 1985-08-22 Brown, Boveri & Cie Ag, 6800 Mannheim Method for increasing the protection against forgery of an identity card
DE3313481C2 (en) * 1983-04-14 1985-02-14 Daimler-Benz Ag, 7000 Stuttgart Device for marking and identifying motor vehicles
WO1990005960A1 (en) * 1988-11-22 1990-05-31 Cryptag Limited Programmable transponder
DE3928107A1 (en) * 1989-08-25 1991-02-28 Kloeckner Moeller Elektrizit METHOD FOR CODING AND AVAILABILITY OF A CHIP CARD
DE4003410C2 (en) * 1990-02-05 1992-04-16 Anatoli 3013 Barsinghausen De Stobbe
DE4100151C2 (en) * 1990-06-15 1993-03-18 Mitsubishi Denki K.K., Tokio/Tokyo, Jp
DE4125746A1 (en) * 1990-08-03 1992-02-06 Bio Medic Data Systems Inc MONITORING SYSTEM FOR PROGRAMMABLE, IMPLANTABLE TRANSPONDER
DE4109114A1 (en) * 1991-03-20 1992-09-24 Eurosil Electronic Gmbh Controlling ownership of movable object e.g. wrist-watch - has in-built memory to store ownership and guarantee data obtained from smart card

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523654A1 (en) * 1995-06-29 1997-01-02 Sel Alcatel Ag Fraud-proof equipment identification method
DE19548778A1 (en) * 1995-12-23 1996-08-14 Jan Goernemann Vehicle bulkhead arrangement for installing driving controls
DE19604206A1 (en) * 1996-02-06 1997-08-07 Martin Ulrich Secure data transmitting transponder
DE19611632A1 (en) * 1996-03-25 1997-10-02 Deutsche Telekom Ag Off-line data stations with virtual on-line capability
DE19616152A1 (en) * 1996-04-23 1997-11-27 Deutsche System Technik Portable infrared miniature receiver
DE19743829A1 (en) * 1997-10-04 1999-04-08 Meto International Gmbh System for providing counterfeit-proof information about an article
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