EP0500693B1 - Verfahren und vorrichtung zur aktivierung einer chipkarte - Google Patents

Verfahren und vorrichtung zur aktivierung einer chipkarte Download PDF

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Publication number
EP0500693B1
EP0500693B1 EP90916993A EP90916993A EP0500693B1 EP 0500693 B1 EP0500693 B1 EP 0500693B1 EP 90916993 A EP90916993 A EP 90916993A EP 90916993 A EP90916993 A EP 90916993A EP 0500693 B1 EP0500693 B1 EP 0500693B1
Authority
EP
European Patent Office
Prior art keywords
voltage
control unit
accordance
chip card
value
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
Application number
EP90916993A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0500693A1 (de
Inventor
José I. RODRIGUEZ
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt 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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0500693A1 publication Critical patent/EP0500693A1/de
Application granted granted Critical
Publication of EP0500693B1 publication Critical patent/EP0500693B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/468—Regulating voltage or current wherein the variable actually regulated by the final control device is dc characterised by reference voltage circuitry, e.g. soft start, remote shutdown

Definitions

  • the invention relates to a method for activating a chip card according to the preamble of the main claim, and a preferred device suitable for carrying out the method according to the invention according to the preamble of the first claim.
  • a method for activating a chip card according to the preamble of the main claim and a preferred device suitable for carrying out the method according to the invention according to the preamble of the first claim.
  • Such a method is known from US-A-3 890 461.
  • a card with an integrated circuit with contacts or "chip card” usually has a rectangular shape and has an integrated circuit with contacts on the surface at a fixed location. Such a device has a variety of uses: check or credit card, telephone, pay TV etc.
  • Such a card enables its owner to access a service or to operate an apparatus.
  • it is contemplated to use it for a pay TV system in which the encrypted television signal is received by a decryption device that recovers a decrypted signal when that device is connected to a smart card that contains authorization information.
  • the device for receiving and decoding the signals is for information exchange with the circuit of the card to check whether the holder has the authorization to receive the program. This information exchange or dialogue takes place via an interface circuit.
  • chip cards There are different types of chip cards and each type corresponds to a programming voltage.
  • the invention has for its object to provide a reliable method for activating a chip card and an easy to implement device that can be used as part of an apparatus whose full functionality is only guaranteed in connection with an active chip card.
  • a control unit of the apparatus receives a signal from a control unit of a chip card connected to the apparatus, which signal determines the value of an activation voltage.
  • the control unit of the apparatus controls further stages, which draw off the required activation voltage from the chip card.
  • the activation voltage with the desired voltage value enables the chip card to be used for further steps, for example for decoding information.
  • An embodiment of the invention defines the time sequence for the application of supply voltages to the control units mentioned.
  • the control unit present in the apparatus is thus supplied with a necessary first supply voltage immediately after the apparatus is switched on. Will the existence If a chip card is recognized, its control system is supplied with a second supply voltage which is delayed compared to the first supply voltage.
  • a preferred embodiment of the device according to the invention contains a DC voltage generator, which generates the required activation voltage for the chip card in a simple manner.
  • This is characterized in that it contains a generator for a regulated voltage, followed by an ohmic voltage divider which has resistors connected in parallel in a branch, at least one of which is connected in series with a switch which is dependent on the one to be supplied DC voltage is operated.
  • the voltage provided by the voltage divider can be used directly to activate the card.
  • the output voltage of the voltage divider represents a nominal voltage which controls a control circuit, for example with a ballast transistor, which supplies the programming with a sufficient current strength.
  • first DC voltage regulator 1 shows a first DC voltage regulator 1, to which a first unregulated DC voltage Vp1 is fed and which supplies a first regulated DC voltage VMB to a first electronic control unit 2 (Electronic Control Unit ECU1), which is assigned an apparatus, for example a decryption device.
  • ECU1 Electronic Control Unit
  • a second DC voltage regulator 3 is provided, to which a second unregulated DC voltage Vp2 is supplied and which outputs a second regulated DC voltage Vcc to a second electronic control unit 4 (ECU2) which is assigned to a chip card (not shown).
  • This chip card must be connected to the apparatus in direct or indirect connection in order to carry out decryption processes.
  • a DC voltage generator 5 receives a third unregulated DC voltage Vp3 and outputs a third regulated DC voltage Vpp, hereinafter also referred to as program DC voltage, to the second electronic control unit 4.
  • the first electronic control unit 2 contains on the one hand a signal CP which assumes the value 1 when the connection between the chip card and the apparatus is present and on the other hand an activation signal from the second electronic control unit 4.
  • the first electronic control unit 2 outputs a first control signal CMDVcc to the second voltage regulator 3, a second and a third control signal CMDVpp or CMMDVppn to the DC voltage generator 5 and a further signal to the second electronic control unit 4.
  • FIG. 1 The function of the preferred exemplary embodiment according to FIG. 1 of the device according to the invention will now be explained with the aid of the method according to the invention, the flow diagram of which is shown in FIG. 2.
  • the method starts with step 100, in which the apparatus is switched on and the unregulated voltages Vp, corresponding to Vp1, Vp2, Vp3, are present.
  • the first voltage regulator 1 generates the regulated DC voltage VMB in step 101, whereby the first electronic control unit 2 is switched on.
  • step 102 follows in which it is checked whether an encrypted broadcast is received.
  • the control signal CMDVpp which is sent from the first electronic control unit 2 to the direct voltage generator in step 105, outputs the voltage Vpp with a fixed value, in this example 5 volts, in step 105a.
  • step 106 the second electronic control unit 4 sends the activation signal to the first electronic control unit 2, which contains information about the value Vn of the programming DC voltage Vpp required for activation.
  • the first electronic control unit 2 sends the control signal CMDVppn to the DC voltage generator 5 in step 107, which then switches on the DC voltage Vpp with the desired value Vn, which is fed to the second electronic control unit (step 108).
  • step 109 This is followed by the end of the method in step 109, which also follows directly if it is determined in step 102 or step 103 that there is no encrypted mail suitable for the system or no connection between the chip card and the apparatus (CP not equal to 1).
  • the unregulated DC voltages Vp1, Vp2, Vp3 can be identical, so that the inputs of the voltage regulators 1, 3 and the DC voltage generator 5 are connected to one another. Furthermore, it is conceivable that the voltage regulator 3 is such that the amplitude of the voltage Vcc increases over time.
  • FIG. 3 A preferred embodiment of the DC voltage generator 5, the activation DC voltage Vpp, in the following also called programming voltage, outputs with desired values, is shown in Fig. 3.
  • the DC voltage generator shown in the figure consists of a DC voltage generator (not shown), which is the main supply and supplies the unregulated DC voltage Vp3 of 30 volts via a connection 11. This is connected to the output connection 12 via an on / off switch 13 which can be controlled by the control signal CMDVpp, a current limiter 14 and a ballast transistor 15 of NPN type, the conductivity of which is controlled in such a way that a DC programming voltage Vpp appears at the output 12, which makes it possible To write information permanently into a chip card (not shown).
  • the programming voltage Vpp can take one of the following values: 5 volts, 12.5 volts, 15 volts and 21 volts. The accuracy of this programming voltage is ⁇ 2.5%.
  • the ballast transistor 15 serves to set the DC voltage at the output 12 to the selected value and to regulate this output voltage.
  • the base of this transistor 15 is connected to the output of a comparator 16, at the one input 16 1 of which a voltage proportional to the output voltage Vpp is present via a voltage divider with the resistors 17 and 18 of the values 407 and 196 kOhm.
  • the comparator 16 At a second input 16, the comparator 16, the setpoint of the control is at the value desired at the output 12.
  • a regulated DC voltage source 19 which supplies a DC voltage signal of the value 12 volts.
  • the accuracy of this value is ⁇ 5%.
  • This voltage is passed on via a resistor 20 of the value 470 ohms to the connections of a zener diode 21, which supplies a DC voltage of 6.8 volts with an accuracy of ⁇ 2%.
  • a voltage divider 22 with an output 23 is provided, which is connected to the input 16 2 of the comparator 16.
  • the voltage divider 22 contains a control resistor 24 between the connection 23 and ground and a resistor 26 of the value 6.8 kOhm between the connection 23 and a conductor 25 connected to the cathode of the zener diode 21.
  • resistors 27 and 28 are turned on in parallel with resistor 26. Each of these resistors is connected in series with a switch 27 1 or 28 1 controlled by the control signal (MDVppn).
  • the resistors 27 and 28 have the values 1.82 kOhm and 1.37 Ohm, respectively.
  • the accuracy of the value of these resistors is ⁇ 1%.
  • the resistance between the terminal 23 and the conductor 25 has a different value.
  • Three of the values are available: the first when the two switches 27 1 and 28 1 are open, the second when the switch 27 1 is closed and the switch 28 1 is open, and the third when the switch 27 1 is open and the switch 28 1 is closed.
  • the switches 27 1 and 28 1 are controlled by the interface switch by means (not shown) which receive the information about the voltage required for their programming from the chip card. Each switch is controlled by an output of a micro actuator. It is conceivable to implement the switches 27 1 , 28 1 in the form of semiconductor components, such as transistors, which are controlled accordingly.
  • the comparator 16 supplies the base of the transistor 15 with an error signal which represents the difference between the actual value of the signal Vpp at the output 12 and the setpoint value which is present at the input 16 2 .
  • the value of the signal of the output 12 depends on the conduction state of the ballast transistor 15.
  • the ballast transistor 15 can be replaced by any other component whose conductivity can be controlled.
  • the circuit just described enables the generation of three DC voltages with the desired accuracy ( ⁇ 2.5%) and has an extremely simple structure.
  • the regulation of the value of the resistor 24 enables the advantageous range of the characteristic curve of the Zener diode 21 to be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Credit Cards Or The Like (AREA)
  • Power Sources (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Dc-Dc Converters (AREA)
  • Selective Calling Equipment (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
EP90916993A 1989-11-07 1990-11-03 Verfahren und vorrichtung zur aktivierung einer chipkarte Expired - Lifetime EP0500693B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8914567 1989-11-07
FR8914567A FR2654232A1 (fr) 1989-11-07 1989-11-07 Generateur de tensions continues pour l'alimentation d'une carte a circuit integre.
PCT/EP1990/001845 WO1991007056A1 (de) 1989-11-07 1990-11-03 Verfahren und vorrichtung zur aktivierung einer chipkarte

Publications (2)

Publication Number Publication Date
EP0500693A1 EP0500693A1 (de) 1992-09-02
EP0500693B1 true EP0500693B1 (de) 1996-08-14

Family

ID=9387145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90916993A Expired - Lifetime EP0500693B1 (de) 1989-11-07 1990-11-03 Verfahren und vorrichtung zur aktivierung einer chipkarte

Country Status (15)

Country Link
US (1) US5265161A (no)
EP (1) EP0500693B1 (no)
JP (1) JP3194946B2 (no)
KR (1) KR100212381B1 (no)
AT (1) ATE141463T1 (no)
AU (1) AU639279B2 (no)
DE (1) DE59010455D1 (no)
ES (1) ES2091829T3 (no)
FI (1) FI922048A (no)
FR (1) FR2654232A1 (no)
HK (1) HK1000753A1 (no)
HU (1) HUT63288A (no)
NO (1) NO180179C (no)
SG (1) SG52445A1 (no)
WO (1) WO1991007056A1 (no)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5768147A (en) * 1995-03-23 1998-06-16 Intel Corporation Method and apparatus for determining the voltage requirements of a removable system resource
CN1179297C (zh) * 1998-07-29 2004-12-08 因芬尼昂技术股份公司 具有功率输入调节的数据载体
US6753758B2 (en) 2001-01-03 2004-06-22 Gerald Adolph Colman System and method for switching voltage
EP1447809A1 (fr) * 2003-02-14 2004-08-18 SCHLUMBERGER Systèmes Carte à multi-puce
US7968018B2 (en) * 2007-04-18 2011-06-28 Coopervision International Holding Company, Lp Use of surfactants in extraction procedures for silicone hydrogel ophthalmic lenses
KR102170184B1 (ko) * 2019-03-21 2020-10-26 진혜성 팔토시

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890461A (en) * 1973-03-27 1975-06-17 Theatrevision Inc Ticket operated subscription television receiver
US4001550A (en) * 1975-12-04 1977-01-04 Schatz Vernon L Universal funds transfer and identification card
US4254439A (en) * 1979-12-26 1981-03-03 International Business Machines Corporation Facsimile mid-page restart
EP0031987B1 (en) * 1980-01-04 1986-04-16 Fanuc Ltd. Reference voltage generating circuit in dc regulated power source apparatus
JPS5785109A (en) * 1980-11-14 1982-05-27 Seiko Epson Corp Driving circuit
JPS5785111A (en) * 1980-11-17 1982-05-27 Fujitsu Ltd Reference constant voltage power supply
JPS5785110A (en) * 1980-11-18 1982-05-27 Oki Electric Ind Co Ltd Dc stabilized power supply circuit
US4795898A (en) * 1986-04-28 1989-01-03 American Telephone And Telegraph Company Personal memory card having a contactless interface using differential data transfer
US4880097A (en) * 1987-04-16 1989-11-14 Pom Incorporated Park card system for electronic parking meter
DE3736985A1 (de) * 1987-10-31 1989-05-11 Grundig Emv Verfahren zur erfassung von gebuehren bei gebuehrenpflichtigen fernsehsendungen
US4914742A (en) * 1987-12-07 1990-04-03 Honeywell Inc. Thin film orthogonal microsensor for air flow and method
JP2723296B2 (ja) * 1989-06-06 1998-03-09 株式会社東芝 携帯可能媒体
FR2654235B1 (fr) * 1989-11-07 1992-01-17 Europ Rech Electr Lab Lecteur de carte a circuit integre a contacts.
US5149945A (en) * 1990-07-05 1992-09-22 Micro Card Technologies, Inc. Method and coupler for interfacing a portable data carrier with a host processor

Also Published As

Publication number Publication date
NO921790D0 (no) 1992-05-06
ATE141463T1 (de) 1996-08-15
AU639279B2 (en) 1993-07-22
NO180179C (no) 1997-02-26
JP3194946B2 (ja) 2001-08-06
JPH05501464A (ja) 1993-03-18
FI922048A0 (fi) 1992-05-06
HU9201511D0 (en) 1992-08-28
NO921790L (no) 1992-05-06
ES2091829T3 (es) 1996-11-16
AU6738590A (en) 1991-05-31
HUT63288A (en) 1993-07-28
SG52445A1 (en) 1998-09-28
FR2654232A1 (fr) 1991-05-10
EP0500693A1 (de) 1992-09-02
NO180179B (no) 1996-11-18
KR100212381B1 (ko) 1999-08-02
DE59010455D1 (de) 1996-09-19
FI922048A (fi) 1992-05-06
WO1991007056A1 (de) 1991-05-16
HK1000753A1 (en) 1998-04-24
US5265161A (en) 1993-11-23

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