EP1883897A1 - Sim with double sets of contacts protected against short-circuit - Google Patents

Sim with double sets of contacts protected against short-circuit

Info

Publication number
EP1883897A1
EP1883897A1 EP06744868A EP06744868A EP1883897A1 EP 1883897 A1 EP1883897 A1 EP 1883897A1 EP 06744868 A EP06744868 A EP 06744868A EP 06744868 A EP06744868 A EP 06744868A EP 1883897 A1 EP1883897 A1 EP 1883897A1
Authority
EP
European Patent Office
Prior art keywords
card
contacts
sim
memory
circuit
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Withdrawn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
EP06744868A
Other languages
German (de)
French (fr)
Inventor
Alain Rhelimi
Serge Barbe
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.)
Thales DIS France SA
Original Assignee
Axalto SA
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 Axalto SA filed Critical Axalto SA
Priority to EP06744868A priority Critical patent/EP1883897A1/en
Publication of EP1883897A1 publication Critical patent/EP1883897A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07743—External electrical contacts

Definitions

  • This invention relates generally to the use and structure of portable object with double pin-outs.
  • the present invention concerns a new Subscriber identity Module (SfM), or SIM Card, with mass storage memory.
  • Said memory rs typically flash- type memory.
  • SlM Subscriber Identity Modules
  • ETSI European Telecommunications Standards Institute
  • GSM 11.11 a version being technical specification ETSl TS 100 977 V8.3.0 (2000-08), entitled “Digital Cellular Telecommunications System (Phase 2+); Specification of the Subscriber Identity Module-Mobile Equipment (SlM-ME) Interface/ 1 (QSM 11-11 Version 8.3.0 Release 1999).
  • SlM-ME Subscriber Identity Module-Mobile Equipment
  • QSM 11-11 Version 8.3.0 Release 1999 These specifications are hereby Incorporated herein by this reference.
  • Two types of SlM cards are specified: an ID-1 SIM and a Plug-in SlM. in practice, a primary component of each SM card is a SiM integrated circuit chip.
  • a SIM card has a format and layout according to the ISO/IEC 7810 and 7816 standards of the International Organization for Standardization (ISO) and the International Electrotechnrcal Commission (IEC).
  • ISO/IEC 7810 standard is entitled “Identification cards-Physical characteristics,” second edition, August 1995. These standards, copies of which are available from the ISO/IEC in Geneva, Switzerland, are expressly incorporated herein by this reference.
  • the JD-1 SIM card is generally the size of a credit card, having dimensions of 85.60 mm. by 53.98 mm., with rounder corners, and a thickness of 0.76 mm.
  • Such a card may have only memory or may also include a microprocessor, the latter often being referred to as a "Smart Card,”
  • the Plug- ⁇ n S!M is a very small card.
  • the ⁇ SM 11.11 specification calls for this card to be a rectangle 25 mm. by 15 mm., with one corner cut off for orientation, and with the same -thickness as the SD-1 SlM card.
  • a primary use of the Plug-in SlM card is in mobile telephones and other portable devices, In both types of cards including the SfM 1 eight electrical contacts (but with as few as five being used) are specified in the ISO/I EC 7816 standard to be arranged on a surface of the card for contact by a host receptacle.
  • SIM provides a level of security for the device in which it is used.
  • the ' device is authenticated by the communications network sending a random number to the device that is processed by a given algorithm, and the result is sent back to the network.
  • the network compares that result with one it calculates itself by use of the same algorithm. If the results match, communication by the device over the network is enabled.
  • a subscriber authentication key is stored in the SIM for use in this and other security algorithms,
  • the SIIvI can also operate to control and support various operations of the device in which it is removably instalfed.
  • MMG Memory Card
  • MulfiMediaCardTM a known Memory Card
  • the physical and electrical specifications for the MMG are given in "The MultiMediaCardTM System Specification" that is published by the MMG
  • MMC-A MutfiMediaCardTM Association
  • the MuitimediaCardTM card is rectangularly shaped with a size similar to that of a postage stamp.
  • the card's dimensions are 32.0 mm. by 24.0 mm. and 1.4 mm. thick, with a row of electrical contacts on a surface of the card along a narrow edge that also contains a cut-off comer,
  • a "modified" version of the Mu ⁇ tiMediaCardTM is the Secure Digital (SD) card.
  • the SD Card has the same rectangular size as the MMC card but with an increased thickness (2,1 mm.) in order to accommodate an additional memory chfp ⁇ f required.
  • a primary difference between these two cards Is the inclusion in the SD card of security functionalities for stored data. Another difference between them is that the SD Card includes additional data contacts in order to enable faster data transfer between the card and a host
  • Memory Cards are used with personal computers, cellular telephones, personal digital assistants, digital cameras, portable audio players and other host electronic devices for the storage of large amounts of data.
  • patent application WO04/Q95365 in the name of SANDISK Corp. describes a card comprising a non-volatile re-writable data memory, a controller connected to control operation of the memory, a plurality of electrical contacts on an outside surface of the card that are connected with the memory controller, and a S(M function connected with the memory controller in a manner to be accessible through outside contacts and to be able to communicate directly with the memory co ⁇ trolfer.
  • the Subscriber Identity Module described comprises two sets 10 and 11 of electrical contacts on an outside surface that follow two different existing card standards.
  • the set 10 of contacts are provided in a row on the side of the card that has a cut off corner, following typically either the MMC or SD card specifications referenced above.
  • the MMC standard calls for seven contacts.
  • the SD standard uses those same seven contacts plus additional contacts S8 and S9. While the MMC specifications call for a single contact through which data is passed to and from a non-volatile memory within the card, the SD specifications use four data contacts for faster data transmission, as described above.
  • the contacts 10 are typically connected with a memory controller and flash EEPROM memory within the card 1 according to either the MMC or SD standards.
  • the controller and memory may be implemented on separate integrated circuit chips or combined on the same chip.
  • the set 11 of contacts in this specific example, follow the ISO/IEC 7816 standard discussed above.
  • the set 11 of contacts may be placed on the same side of the card 1 as the set 1D of contacts, or on the opposite side.
  • the ISO/IEC 7816 standard contemplates the use of eight contacts, and contacts C4 and C8 may be used for USB connections as described in patent EP-B-1110173 assigned to the present applicant.
  • This set 11 of contacts is connected with a StM function within the card, according for example to the GSM 11. 11 specification, which SIM function may be a separate integrated circuit chip that is commercially available. Of course, the SIM function may alternatively be combined on a single integrated circuit chip with either or both of the controller and memory.
  • the card 11 has the physical size of the plug-in SiM.
  • the present invention aims to solve this problem.
  • a subscriber identity module comprising a card in which is embedded at least one integrated circuit, on a surface of which said card Is provided ; a. a first set of contacts providing a first electrical interface; and b. a second set of contacts providing a second electrical interface; is characterized according to the present invention in that ; c. said first set of contacts is flush to the surface of the card; d. said second set of contacts is slightly set back from said surface of the card;
  • FIG. 1 is a front view of a Subscriber identity Module with two set of contacts ; and - FIG. 2 is a transversal cross-section view of the card of Figure 1 modified according to the present invention.
  • FIG. 3 is a schematic diagram showing different steps of assembly for the manufacture of a smartcard.
  • FIG. 1 shows a cross-sectional view of the Subscriber Identity Module according to the present invention.
  • the subscriber Identity Module is in the form of a card 1 in which are embedded two integrated circuits.
  • On a surface of said card 1 is provided : - a first set of contacts 11 providing a first eiectrical interface connected to a first integrated circuit, typically 8 contacts according to GSM 11.11 Standard; and
  • a second set of contacts 10 providing a second electrical interface connected to a second integrated circuit, for example a MMC-type electrical interface.
  • the first set 11 of contacts is flush to a surface 101 of the card according typically to conventional solution used in smartcard technology.
  • the second set 10 of contacts is slightly set back from the surface 101 of the card.
  • a cavity 104 is made. !n this cavity 104 a module is inserted.
  • the module comprises the set of contacts 10 comprising of metai layer deposited on a substrate.
  • the set 10 of metal contacts are separated from one another by insulator lines and are connected to an electronic component 102, which is a chip, by conductive wires.
  • the set 10 of contacts may be formed by a layer of copper with a thickness of about 70 ⁇ m coated on each side with a.1 ⁇ m nickel iayer and a 0,1 ⁇ m gold layer. The coating of the cooper layer with nickel and gold is used notably to prevent the corrosion of copper through contact with the ambient atmosphere.
  • the second set 10 of contacts is slighfiy set back from said surface 101 of the card.
  • This slightly shifted position of the second result is obtained for example by positioning the module in the cavity at a lower level when inserted into the plastic card body. Accordingly the cavity contains the appropriate sized hole, FlG. 3 shows a hole HOLE made in the plastiG card body according to a conventional process.
  • Another solution can be used in which a further stripping of the metal layer is made to make said layer thinner and thus have the second set of contacts 10 slightly set back from the surface of the card, Stripping can be replaced also by other mechanical of chemical solution. As a consequence, the depth of the cavity may be the same as in conventional solutions.

Abstract

The present invention relates to a subscriber identity module (1) comprising a card in which is embedded at least one integrated circuit, on a surface of which said card is provided: - a first set of contacts (11) providing a first electrical interface; and - a second set of contacts (10) providing a second electrical interface. According to the invention: - said first set of contacts (11) is flush to the surface of the card; and - said second set of contacts (10) is slightly set back from the surface of the card.

Description

SIM WITH DOUBLE SETS OF CONTACTS PROTECTED AGAINST SHORT-CIRCUIT
FIELD OF THE INVENTION This invention relates generally to the use and structure of portable object with double pin-outs.
BACKGROUND OF THE INVENTION
SIlVI cards
In particular the present invention concerns a new Subscriber identity Module (SfM), or SIM Card, with mass storage memory. Said memory rs typically flash- type memory.
Existing Subscriber Identity Modules (SlM) are known for example from the specifications published by the European Telecommunications Standards Institute (ETSI). A portion of these specifications appear as GSM 11.11, a version being technical specification ETSl TS 100 977 V8.3.0 (2000-08), entitled "Digital Cellular Telecommunications System (Phase 2+); Specification of the Subscriber Identity Module-Mobile Equipment (SlM-ME) Interface/1 (QSM 11-11 Version 8.3.0 Release 1999). These specifications are hereby Incorporated herein by this reference. Two types of SlM cards are specified: an ID-1 SIM and a Plug-in SlM. in practice, a primary component of each SM card is a SiM integrated circuit chip.
A SIM card has a format and layout according to the ISO/IEC 7810 and 7816 standards of the International Organization for Standardization (ISO) and the International Electrotechnrcal Commission (IEC). The ISO/IEC 7810 standard is entitled "Identification cards-Physical characteristics," second edition, August 1995. These standards, copies of which are available from the ISO/IEC in Geneva, Switzerland, are expressly incorporated herein by this reference. The JD-1 SIM card is generally the size of a credit card, having dimensions of 85.60 mm. by 53.98 mm., with rounder corners, and a thickness of 0.76 mm. Such a card may have only memory or may also include a microprocessor, the latter often being referred to as a "Smart Card,"
The Plug-ϊn S!M is a very small card. The ΘSM 11.11 specification calls for this card to be a rectangle 25 mm. by 15 mm., with one corner cut off for orientation, and with the same -thickness as the SD-1 SlM card. A primary use of the Plug-in SlM card is in mobile telephones and other portable devices, In both types of cards including the SfM1 eight electrical contacts (but with as few as five being used) are specified in the ISO/I EC 7816 standard to be arranged on a surface of the card for contact by a host receptacle.
One function of the SIM provides a level of security for the device in which it is used. In a mobile communications device such as a cellular telephone, the 'device is authenticated by the communications network sending a random number to the device that is processed by a given algorithm, and the result is sent back to the network. The network compares that result with one it calculates itself by use of the same algorithm. If the results match, communication by the device over the network is enabled. A subscriber authentication key is stored in the SIM for use in this and other security algorithms, The SIIvI can also operate to control and support various operations of the device in which it is removably instalfed.
Memory Cards
Other cards, known as "Memory Cards" have also been commercially used as mass storage memory according to a number of well-known standards. For example, a known Memory Card is the so-called MulfiMediaCard™ card. The physical and electrical specifications for the MMG are given in "The MultiMediaCard™ System Specification" that is published by the
MutfiMediaCard™ Association (MMC-A). Version 3,1 of thai Specification, dated
June 2001, Is incorporated herein by thfs reference. The MuitimediaCard™ card is rectangularly shaped with a size similar to that of a postage stamp. The card's dimensions are 32.0 mm. by 24.0 mm. and 1.4 mm. thick, with a row of electrical contacts on a surface of the card along a narrow edge that also contains a cut-off comer, A "modified" version of the MuϊtiMediaCard™ is the Secure Digital (SD) card. The SD Card has the same rectangular size as the MMC card but with an increased thickness (2,1 mm.) in order to accommodate an additional memory chfp }f required. A primary difference between these two cards Is the inclusion in the SD card of security functionalities for stored data. Another difference between them is that the SD Card includes additional data contacts in order to enable faster data transfer between the card and a host
Memory Cards are used with personal computers, cellular telephones, personal digital assistants, digital cameras, portable audio players and other host electronic devices for the storage of large amounts of data.
As is apparent from the foregoing summary of the existing electronic card standards, there are many differences in their physical characteristics including size and shape, in the number, arrangement and structure of electrical contacts and in the electrical interface with a host system through those contacts when the card is inserted into the host card slot.
With reference to FIG.1, patent application WO04/Q95365 (hereby incorporated herein by this reference) in the name of SANDISK Corp. describes a card comprising a non-volatile re-writable data memory, a controller connected to control operation of the memory, a plurality of electrical contacts on an outside surface of the card that are connected with the memory controller, and a S(M function connected with the memory controller in a manner to be accessible through outside contacts and to be able to communicate directly with the memory coπtrolfer.
A shown in Figure I5 in WO04/095365, the Subscriber Identity Module described comprises two sets 10 and 11 of electrical contacts on an outside surface that follow two different existing card standards.
The set 10 of contacts are provided in a row on the side of the card that has a cut off corner, following typically either the MMC or SD card specifications referenced above. The MMC standard calls for seven contacts. The SD standard uses those same seven contacts plus additional contacts S8 and S9. While the MMC specifications call for a single contact through which data is passed to and from a non-volatile memory within the card, the SD specifications use four data contacts for faster data transmission, as described above. The contacts 10 are typically connected with a memory controller and flash EEPROM memory within the card 1 according to either the MMC or SD standards. The controller and memory may be implemented on separate integrated circuit chips or combined on the same chip.
The set 11 of contacts, in this specific example, follow the ISO/IEC 7816 standard discussed above. The set 11 of contacts may be placed on the same side of the card 1 as the set 1D of contacts, or on the opposite side. The ISO/IEC 7816 standard contemplates the use of eight contacts, and contacts C4 and C8 may be used for USB connections as described in patent EP-B-1110173 assigned to the present applicant. This set 11 of contacts is connected with a StM function within the card, according for example to the GSM 11. 11 specification, which SIM function may be a separate integrated circuit chip that is commercially available. Of course, the SIM function may alternatively be combined on a single integrated circuit chip with either or both of the controller and memory. For example the card 11 has the physical size of the plug-in SiM.
The solution described in this patent application raises a major problem. In fact as a result of a lot of existing designs of the present mobile phones available for sales, metal parts are often used in some parts of the case which is provided for receiving the SIM card, which metal parts can create short circuit as a result of connection^) with the set 10 of contacts which adds with respect to the conventional set 11 of contacts used in SIM card. Moreover, a contact with the set 10 might be electrically connected to at least one contact of the set 11 , then said contact will connect the metal casing of the mobile phone to this said contact. The impact can be severe when the said contact is the digital ground contact (C5 in the ISO7616-2 standard), which will be directly connected to the metal casing and can inject in the digital system EMl and RFl. The metal casing acts like an antenna connected to the digital ground of the handset.
The present invention aims to solve this problem.
Accordingly, a subscriber identity module comprising a card in which is embedded at least one integrated circuit, on a surface of which said card Is provided ; a. a first set of contacts providing a first electrical interface; and b. a second set of contacts providing a second electrical interface; is characterized according to the present invention in that ; c. said first set of contacts is flush to the surface of the card; d. said second set of contacts is slightly set back from said surface of the card;
Other aspects, features and advantages of the present invention are Included in the following description of representative embodiments, which description should be taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS :
- FIG, 1, already commented, is a front view of a Subscriber identity Module with two set of contacts ; and - FIG. 2 is a transversal cross-section view of the card of Figure 1 modified according to the present invention; and
-FIG. 3 is a schematic diagram showing different steps of assembly for the manufacture of a smartcard.
DESCRIPTION OF PREFERRED EMBODiEMENTS
FIG. 1 shows a cross-sectional view of the Subscriber Identity Module according to the present invention. The subscriber Identity Module is in the form of a card 1 in which are embedded two integrated circuits. On a surface of said card 1 is provided : - a first set of contacts 11 providing a first eiectrical interface connected to a first integrated circuit, typically 8 contacts according to GSM 11.11 Standard; and
- a second set of contacts 10 providing a second electrical interface connected to a second integrated circuit, for example a MMC-type electrical interface.
The first set 11 of contacts is flush to a surface 101 of the card according typically to conventional solution used in smartcard technology.
The second set 10 of contacts is slightly set back from the surface 101 of the card.
As shown in Figure 2, in the plastic of the card 1 , a cavity 104 is made. !n this cavity 104 a module is inserted. The module comprises the set of contacts 10 comprising of metai layer deposited on a substrate. The set 10 of metal contacts are separated from one another by insulator lines and are connected to an electronic component 102, which is a chip, by conductive wires. The set 10 of contacts may be formed by a layer of copper with a thickness of about 70 μm coated on each side with a.1 μm nickel iayer and a 0,1 μm gold layer. The coating of the cooper layer with nickel and gold is used notably to prevent the corrosion of copper through contact with the ambient atmosphere. As it appears clearly from Figure 2, the second set 10 of contacts is slighfiy set back from said surface 101 of the card. This slightly shifted position of the second result is obtained for example by positioning the module in the cavity at a lower level when inserted into the plastic card body. Accordingly the cavity contains the appropriate sized hole, FlG. 3 shows a hole HOLE made in the plastiG card body according to a conventional process.
Another solution can be used in which a further stripping of the metal layer is made to make said layer thinner and thus have the second set of contacts 10 slightly set back from the surface of the card, Stripping can be replaced also by other mechanical of chemical solution. As a consequence, the depth of the cavity may be the same as in conventional solutions.

Claims

CLAIM
1 - Subscriber identity module (1) comprising a card in which is embedded at least one integrated circuit, on a surface of which said card is provided : - a first set of contacts (11) providing a first electrical interface; and
- a second set of contacts (10) providing a second electrical interface; characterized in that :
- said first set of contacts (11 ) is flush to the surface of the card; and
- said second set of contacts (10) is slightly set back from the surface of the card.
EP06744868A 2005-05-27 2006-05-04 Sim with double sets of contacts protected against short-circuit Withdrawn EP1883897A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06744868A EP1883897A1 (en) 2005-05-27 2006-05-04 Sim with double sets of contacts protected against short-circuit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05011423A EP1727080A1 (en) 2005-05-27 2005-05-27 SIM with double sets of contacts protected against short-circuit
EP06744868A EP1883897A1 (en) 2005-05-27 2006-05-04 Sim with double sets of contacts protected against short-circuit
PCT/IB2006/051409 WO2006126111A1 (en) 2005-05-27 2006-05-04 Sim with double sets of contacts protected against short-circuit

Publications (1)

Publication Number Publication Date
EP1883897A1 true EP1883897A1 (en) 2008-02-06

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EP05011423A Withdrawn EP1727080A1 (en) 2005-05-27 2005-05-27 SIM with double sets of contacts protected against short-circuit
EP06744868A Withdrawn EP1883897A1 (en) 2005-05-27 2006-05-04 Sim with double sets of contacts protected against short-circuit

Family Applications Before (1)

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EP05011423A Withdrawn EP1727080A1 (en) 2005-05-27 2005-05-27 SIM with double sets of contacts protected against short-circuit

Country Status (3)

Country Link
EP (2) EP1727080A1 (en)
CN (1) CN101185086B (en)
WO (1) WO2006126111A1 (en)

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JP5198379B2 (en) * 2009-07-23 2013-05-15 株式会社東芝 Semiconductor memory card
CN104158010B (en) * 2014-08-15 2016-03-09 江苏都万电子科技有限公司 Improve method and the device of Internet of Things user of communication terminal identification card connection reliability
EP3311264A4 (en) * 2015-06-17 2019-01-23 Intel Corporation Random number generator
WO2018017624A2 (en) * 2016-07-18 2018-01-25 Daniel Isaac S An apparatus, system and method of processing credit card transactions on a mobile device using a unique subscriber identification
FR3113753B1 (en) 2020-08-25 2023-05-12 Idemia France Method for verifying a microcircuit card, method for personalizing a microcircuit card, microcircuit card and associated electronic device

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WO2004044755A2 (en) * 2002-11-13 2004-05-27 Sandisk Corporation Universal non-volatile memory card used with various different standard cards containing a memory controller
US6883718B1 (en) * 2004-02-27 2005-04-26 Imation Corp. Credit card sized memory card with host connector

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Title
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Also Published As

Publication number Publication date
CN101185086A (en) 2008-05-21
EP1727080A1 (en) 2006-11-29
CN101185086B (en) 2011-10-19
WO2006126111A1 (en) 2006-11-30

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