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DE19609185A1 - Chip card device with real time clock for e.g. credit card - Google Patents

Chip card device with real time clock for e.g. credit card

Info

Publication number
DE19609185A1
DE19609185A1 DE1996109185 DE19609185A DE19609185A1 DE 19609185 A1 DE19609185 A1 DE 19609185A1 DE 1996109185 DE1996109185 DE 1996109185 DE 19609185 A DE19609185 A DE 19609185A DE 19609185 A1 DE19609185 A1 DE 19609185A1
Authority
DE
Germany
Prior art keywords
chip card
rtc
time
card
real time
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Withdrawn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
DE1996109185
Other languages
German (de)
Inventor
Wolfgang Salge
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1996109185 priority Critical patent/DE19609185A1/en
Publication of DE19609185A1 publication Critical patent/DE19609185A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/14—Time supervision arrangements, e.g. real time clock
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record 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
    • G06K19/067—Record 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
    • G06K19/07—Record 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Sources (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

In order to determine the time elapsing between two separate accesses to the data on the card, a real time clock (RTC) is provided so that this time can be determined internally by the card. With this method the time cannot be influenced from outside and also no external power is required in this time. The real time clock is equipped with an internal quartz timer for producing the beat and the clock has an internal energy buffer in the shape of a condenser or battery. The battery in this case is an extremely flat, lithium battery, formed in the body of the wafer.

Description

Die Erfindung betrifft eine Chipkarte, wie sie grund­ sätzlich aus vielen und sich ständig erweiternden Anwendungen bekannt ist, z. B. als Kreditkarte, Sparkassen- und EC-Karte, Zeiterfassungskarte sowie Zutrittskontroll- und Tankkarte. Ihre Anwendung bietet sich besonders dann an, wenn für spezifische Applikationen der Zugriff zu der Chipkarte zeitbezogen und autark gesperrt werden soll.The invention relates to a chip card, as is basic additionally from many and constantly expanding Applications are known, e.g. B. as a credit card, Sparkasse and EC card, time registration card and Access control and fuel card. Your application offers especially when it comes to specific applications access to the chip card is time-related and self-sufficient should be blocked.

Bisher werden Zeitangaben, die für das Sperren von Chipkarten benötigt werden, von einem externen Lesegerät bezogen. Der offensichtliche Nachteil ist, daß die Übertragung dieser Angaben manipuliert werden kann. Zudem kann nach dem Stand der Technik nach dem Abschalten und folgendem Wiedereinschalten der Stromversorgung die vergangene Zeit von einer Prozessor-Chipkarte nicht bestimmt werden. Das gilt sowohl für kontaktbehaftete als auch für kontaktlose Chipkarten und Derivate.So far, times that are necessary for locking Chip cards are needed by an external reader based. The obvious disadvantage is that the Transmission of this information can be manipulated. In addition can after the state of the art after switching off and after switching the power on again not past time from a processor chip card be determined. This applies to both contacts and also for contactless chip cards and derivatives.

Es ist daher Ziel und Aufgabe der Erfindung, diesen Nachteil des Standes der Technik kostengünstig und absolut zuverlässig zu beseitigen.It is therefore the aim and object of the invention Disadvantage of the prior art inexpensive and absolute to eliminate reliably.

Erfindungsgemäß ist auf der Chipkarte eine Echtzeituhr (real-time-clock, RTC) implementiert. Damit kann die vergangene Zeit zwischen zwei Zugriffen von der Chipkarte intern ermittelt werden, wobei äußere Einflüsse die Echtzeituhr nicht beeinflussen können. Die Chipkarte kann erfindungsgemäß zwischenzeitlich ohne externe Versor­ gungsspannung sein. According to the invention, there is a real-time clock on the chip card (real-time clock, RTC) implemented. So that elapsed time between two accesses from the chip card are determined internally, with external influences Realtime clock can not affect. The chip card can according to the invention in the meantime without an external supplier voltage.  

Die Zeitabstände, in denen die Chipkarte nur einmal benutzt werden darf, können anwendungsbezogen festgelegt werden.The time intervals in which the chip card only once may be used, can be determined based on the application will.

Die Erfindung wird nachfolgend anhand eines Ausführungs­ beispieles näher erläutert. In diesem Fall ist in der Chipkarte die RTC auf dem Silizium des Prozessors untergebracht. Diese hat einen internen Quarz zur Takt­ erzeugung. Die RTC wird über einen Kondensator bzw. über eine Batterie, z. B. eine extrem flache Lithium-Batterie, gepuffert. Die Uhr läuft, versorgt durch den Kondensator bzw. die Batterie, bei Versorgungsspannungsverlust weiter.The invention is based on an embodiment example explained in more detail. In this case, the Chip card the RTC on the silicon of the processor housed. This has an internal quartz clock generation. The RTC is via a capacitor or a battery, e.g. B. an extremely flat lithium battery, buffered. The clock runs, powered by the capacitor or the battery, if the supply voltage is lost.

Claims (6)

1. Chipkarte, dadurch gekennzeichnet, daß in ihr eine Echtzeituhr (real-time-clock, RTC) implementiert ist.1. Chip card, characterized in that a real-time clock (RTC) is implemented in it. 2. Chipkarte nach Anspruch 1, dadurch gekennzeichnet, daß die RTC auf dem Silizium des Prozessors untergebracht ist.2. Chip card according to claim 1, characterized in that the RTC housed on the silicon of the processor is. 3. Chipkarte nach Anspruch 1 und 2, dadurch gekenn­ zeichnet, daß die RTC einen internen Quarz zur Takterzeugung besitzt.3. Chip card according to claim 1 and 2, characterized records that the RTC uses an internal quartz for Has clock generation. 4. Chipkarte nach Anspruch 1 bis 3, dadurch gekenn­ zeichnet, daß die RTC über einen Kondensator gepuffert wird.4. Chip card according to claim 1 to 3, characterized records that the RTC is buffered via a capacitor becomes. 5. Chipkarte nach Anspruch 1 bis 4, dadurch gekenn­ zeichnet, daß die RTC über eine Batterie gepuffert wird.5. Chip card according to claim 1 to 4, characterized records that the RTC is buffered by a battery becomes. 6. Chipkarte nach Anspruch 5, dadurch gekennzeichnet, daß die RTC über eine Lithium-Batterie gepuffert wird.6. Chip card according to claim 5, characterized in that the RTC is buffered by a lithium battery.
DE1996109185 1996-03-09 1996-03-09 Chip card device with real time clock for e.g. credit card Withdrawn DE19609185A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996109185 DE19609185A1 (en) 1996-03-09 1996-03-09 Chip card device with real time clock for e.g. credit card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996109185 DE19609185A1 (en) 1996-03-09 1996-03-09 Chip card device with real time clock for e.g. credit card

Publications (1)

Publication Number Publication Date
DE19609185A1 true DE19609185A1 (en) 1997-09-11

Family

ID=7787733

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996109185 Withdrawn DE19609185A1 (en) 1996-03-09 1996-03-09 Chip card device with real time clock for e.g. credit card

Country Status (1)

Country Link
DE (1) DE19609185A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806490A1 (en) * 2000-03-20 2001-09-21 Jean Michel Poupeau Method for setting internal clock of self-contained electronic terminal to control electronic lock for access control system by using chip card to transfer timing data to central unit of terminal
WO2001080192A1 (en) * 2000-03-31 2001-10-25 Interpay Nederland B.V. Chip for placing in a terminal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038425A2 (en) * 1980-04-17 1981-10-28 Porst, Hannsheinz Permit card
US4475180A (en) * 1981-01-13 1984-10-02 Citizen Watch Co., Ltd. Non-volatile memory circuit for portable electronic devices
DE8811492U1 (en) * 1988-09-11 1988-11-03 Parkautomatic Farmont GmbH, 4000 Düsseldorf Parking card for emergency call secured parking garages or parking areas
US4962485A (en) * 1988-02-16 1990-10-09 Citizen Watch Co., Ltd. Noncontacting IC card supplied with power from an outside source
DE29501572U1 (en) * 1995-02-01 1995-04-20 Chu, Wen-Chi, Taichung Universal display card
DE9412130U1 (en) * 1994-07-27 1995-05-24 Köhler, Jürgen, 31191 Algermissen Phonecard with integrated clock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038425A2 (en) * 1980-04-17 1981-10-28 Porst, Hannsheinz Permit card
US4475180A (en) * 1981-01-13 1984-10-02 Citizen Watch Co., Ltd. Non-volatile memory circuit for portable electronic devices
US4962485A (en) * 1988-02-16 1990-10-09 Citizen Watch Co., Ltd. Noncontacting IC card supplied with power from an outside source
DE8811492U1 (en) * 1988-09-11 1988-11-03 Parkautomatic Farmont GmbH, 4000 Düsseldorf Parking card for emergency call secured parking garages or parking areas
DE9412130U1 (en) * 1994-07-27 1995-05-24 Köhler, Jürgen, 31191 Algermissen Phonecard with integrated clock
DE29501572U1 (en) * 1995-02-01 1995-04-20 Chu, Wen-Chi, Taichung Universal display card

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806490A1 (en) * 2000-03-20 2001-09-21 Jean Michel Poupeau Method for setting internal clock of self-contained electronic terminal to control electronic lock for access control system by using chip card to transfer timing data to central unit of terminal
WO2001080192A1 (en) * 2000-03-31 2001-10-25 Interpay Nederland B.V. Chip for placing in a terminal

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8141 Disposal/no request for examination