US 20020147028A1
`
`(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2002/0147028 A1
`
`ALOS et al.
`(43) Pub. Date:
`Oct. 10, 2002
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`(54) MOBILE RADIO-TELEPHONE TERMINAL
`WITH CONTROLLED USAGE
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`(76)
`
`Inventors: RAFAELALOS, OSNY (FR); MARC
`PORA'I‘O, LOCONVILLE (FR);
`JEAN-MARR DIMECH,
`CHAUMON'I‘ EN VEXIN (FR);
`FRANCIS SYKES, PARIS (FR)
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`Correspondence Address:
`CREENBERC TRAURIG LLP
`885 THIRD AVENUE
`NEW YORK, NY [0022 (US)
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`( " ) Notice:
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`This is a publication of a continued pros-
`ecution application (CPA) filed under 37
`CFR 1.53m).
`
`(21) App]. No.:
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`09/210,023
`
`(22
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`Filed:
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`Dec. 11, 1998
`
`(30)
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`Foreign Application Priority Data
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`Jun. 20, 1996
`Jun. 17, 1997
`
`(FR) ............................................ 96 07697
`(US) ................................ PC'I‘I‘R9701089
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`Publication Classification
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`lnt.CI.7
`lI.S.CI.
`
`H04M 1/00; H0413 1X38
`
`
`455/558
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`ABSTRACT
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`(51)
`(52)
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`(57)
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`The mobile radio-telephone terminal comprising radio
`means (7) arranged to be activated by a chip card (10),
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`the chip card (10) comprising memory means (12)
`containing a subscriber identification word (PIN,
`IMSI) and connected to an input of a comparator
`(11).
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`the terminal comprising means (4) for receiving the
`card (10), which are connected to the radio means
`(7), means (2) for inputting a particular identification
`word (PIN; PINUT), associated with the card ([0),
`and arranged to be connected to the other input of the
`comparator (11),
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`and the terminal comprises means (3; 522, 6). in particular
`means (3) for transcoding the input word (PINUT), to match
`it with the card (10), which are arranged to control the
`activation of the radio means (7) from the subscriber iden-
`tilication word.
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`lof4
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`SAMSUNG EXHIBIT 1005
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`

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`Patent Application Publication
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`Oct. 10, 2002
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`US 2002/0147028 A1
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`US 2002/0147028 A1
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`Oct. 10, 2002
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`MOBILE RADIO-TELEPHONE TERMINAL WITH
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`CONTROLLED USAGE
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`[0001] Mobile radio-telephone terminals are general usage
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`terminals provided with a reader for a SIM (subscriber
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`identification module) chip card identifying the user and
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`verifying payment of a subscription to the radio network
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`concerned. The chip card thus constitutes an electronic key
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`of the terminal.
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`[0002] Such usage of the terminal, however, has disad-
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`vantages.
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`[0003]
`In the first place, any subscriber having misappro—
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`priated a terminal could in some cases use it with his own
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`SIM card. Provision is made to input, via a keypad on the
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`terminal, an identification code word for each subscriber,
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`called a PIN (personal identification number) but it can
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`control only the usage of the associated SIM card and thus
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`be ineffective against fraudulent usage of a terminal.
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`[0004] Another case which could arise is that of loaning
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`the terminal for a duration, a calendar period or period of
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`effective usage, limited, for example, to the clients of a hotel.
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`It must be possible to prevent usage of the SIM card and of
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`the terminal after this period.
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`[0005] The present invention aims to resolve these prob-
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`lems.
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`[0006] To this end the invention relates to a mobile radio-
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`telephone terminal comprising radio means arranged to be
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`activated by a chip card, the chip card comprising memory
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`means containing a subscriber identification word and con-
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`nected to an input of a comparator, the terminal comprising
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`means for receiving the card, which are connected to the
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`radio means, means for inputting a particular identification
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`word, associated with the card, and arranged to be connected
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`to the other input of the comparator, characterised in that it
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`comprises means for matching it with the card, which are
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`arranged to control the activation of the radio means from
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`the subscriber identification word.
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`[0007] Thus the two constituents of the terminal-card
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`assembly with a word to be input cannot be used separately
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`from each other. A misappropriated or expired card cannot
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`therefore be used on another terminal and, inversely, a stolen
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`terminal cannot be controlled by just any card.
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`[0008]
`In the prior art the chip card and the input means
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`functionally constituted an autonomous command unit, con-
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`trolling, without any other means of control,
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`means.
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`[0009]
`In accordance with the invention the afore-men-
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`tioned unit no longer has this autonomy since the terminal
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`has matching means which control the action of the chip
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`card upon the radio means. The terminal is thus personalised
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`and the card is linked thereto.
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`the matching means
`[0010]
`In a preferred embodiment
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`comprise, between the input means and the reception means
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`of the card, means for transcoding the input word.
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`[0011]
`In this embodiment the autonomy of the command
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`unit is controlled by the fact that the identification word
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`indicated to the user is actually fictitious and only becomes
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`identical to that in the memory, by virtue of the
`real, ie.
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`transcoding means of the terminal. The card can therefore
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`activate the radio means of a terminal only if this terminal
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`is the one which carries out the expected transcoding.
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`[0012]
`To summarise, the card is slave to the terminal
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`which is itself slave to the card.
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`[0013]
`In particular the identification word carried by the
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`chip card remains secret to any user, authorised or not, since
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`the PIN word which the user inputs is distinct from that in
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`the memory.
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`the matching
`[0014]
`In another preferred embodiment
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`means comprise memory means containing data matched
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`with the data contained in the memory means of the card,
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`controlling comparator means arranged to read the memory
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`means of the card and to authorise activation of the radio
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`means only after the said match has been verified.
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`[0015] Thus the matching is controlled very simply.
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`[0016] The invention will be better understood with the
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`aid of the following description of an example including the
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`two afore—mentioned preferred embodiments of the inven—
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`tion, with reference to the single figure of the attached
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`drawing which is a block diagram of the terminal of the
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`invention with a chip card.
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`[0017] The terminal illustrated, referenced 1, is in this case
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`a radio terminal, for example, for cellular telephony, for
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`example, GSM, comprising a keypad 2 for inputting a user
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`identification word (and dialling) controlling a transcoding
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`or encrypting arithmetic unit 3 connected at the output to a
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`connector/reader 4 arranged to receive a connector 14 of a
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`chip card 10. The transcoding of the unit 3 can in this case
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`be determined and modified on the keypad by a Teaser of the
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`terminal 1 who lends it to successive users.
`'lhe card 10
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`being illustrated separately from the terminal 1, the three
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`dashed lines linking the connectors 4 and 14 indicate the
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`connections which are established upon connection of the
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`card 10.
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`[0018] The card 10 comprises a comparator 11, actually a
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`microprocessor, connected, once the card 10 has been con-
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`nected, to an input path from the output of the unit 3 via the
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`connectors 4 and 14. A second input path of the comparator
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`11 is connected to a memory 12 of the card 10 comprising
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`a user identification number, PIN, referenced 121, as well as
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`other data of the same type such as IMSI (international
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`mobile subscriber identity), referenced 122. The output of
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`the comparator 11 commands the activation, via the con-
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`nectors 4 and 14 of a radio transceiver unit 7 of the terminal
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`1. The activation/deactivation of the radio unit 7 is, more—
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`over, controlled by a comparator 6 connected at the input, on
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`the one hand, to the zone 122 (IMSI) of the memory 12 of
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`the card 10 and, on the other hand, to a memory zone 522
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`of a memory 5 of the terminal 1, also containing the IMSI
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`data. The functions of the unit 3 and of the comparator 6 are,
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`in practice, carried out by a microprocessor 9.
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`[0019] As the invention can be applied to various types of
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`terminals since it has no bearing on the nature of the
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`operation of the terminal, in this case by radio, but on the
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`control of access to this function, the telephone handset and
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`its circuits for connection to the radio unit 7 have not been
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`shown.
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`[0020] The operation of the terminal 1 will now be
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`explained.
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`3 of 4
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`US 2002/0147028 A1
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`Oct. 10, 2002
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`[0028] Leaving the afore-mentioned locked state thus in
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`this case leads to a general usage state of operation in
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`accordance with the prior art, which can then move towards
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`the state with matching described at the beginning. Transi-
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`tion from the locked state to the general usage state is
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`achieved by inputting the actual PIN,
`this input being
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`detected by the microprocessor 9. Locking of the terminal I
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`is thus deactivated, ie. the terminal 1 can operate with other
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`chip cards,
`the transcoding unit 3 then being logically
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`transparent. In the same way the chip card 10 can then
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`operate with any general usage terminal.
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`1. Mobile radio-telephone terminal comprising radio
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`means (7) arranged to be activated by a chip card (10),
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`the chip card (10) comprising memory means (12) con—
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`taining a subscriber identification word (PIN, IMSI)
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`and connected to an input of a comparator (11),
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`the terminal comprising means (4) for receiving the card
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`(10), which are connected to the radio means (7),
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`means (2) for inputting a particular identification word
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`(PIN; PINUT), associated with the card (10), and
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`arranged to be connected to the other input of the
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`comparator (11),
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`characterised in that it comprises means (3; 522, 6) for
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`matching it with the card (10), which are arranged to
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`control the activation of the radio means (7) from the
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`subscriber identification word.
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`2. Terminal according to claim 1, wherein the matching
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`means comprise, between the input means (2) and the
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`reception means (4) of the card (10), means (3) for transcod-
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`ing the input word (PINUT).
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`3. Terminal according to claim 2, wherein the transcoding
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`means comprise a microprocessor
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`4. Terminal according to one of claims 1 to 3, wherein the
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`matching means comprise memory means (522) containing
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`data matched with the data (122) contained in the memory
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`means of the card (10), controlling comparator means (6)
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`arranged to read the memory means (12) of the card (10) and
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`to authorise activation of the radio means (7) only after the
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`said match has been verified.
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`5. Terminal according to one of claims 2 to 4, wherein a
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`charge rate counter (8) is provided arranged to cooperate
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`with the transcoding means (3).
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`*>I<>I<>I<*
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`[0021] The operator having defined a transcoding or
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`encrypting key and having stored it in the transcoding unit
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`3, then determines, from the real PIN, which he knows and
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`which is stored in the card 10, another, virtual, PIN which he
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`communicates to the user and which will be called PINUT.
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`The PIN U'I' is calculated by inverse transformation of the
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`PIN.
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`[0022] The user having introduced the card 10 into the
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`connector 4 of the associated terminal 1
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`keypad 2 the PINUT which is transeoded in the unit 3 into
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`the PIN desired and recognised by the comparator 11 which
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`commands activation of the radio unit 7.
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`[0023] This command in itself will not suffice since, in this
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`example, two matching means are provided, which are the
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`transcoding unit 3 and the memory 5 with the comparator 6.
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`It will thus be understood that What is herein referred to as
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`control by the comparator 6 could also be called command
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`and that, in other examples, a single command 6 or 11 would
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`suffice.
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`[0024] The comparator 6 in this case controls the agree-
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`mentbetween the contents of the memories 522 and 122 and
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`thus authorises activation of the radio unit 7 by the com-
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`parator 11.
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`[0025] The microprocessor 9 also prevents any change in
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`the PIN or a possible code word for controlling the access to
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`the terminal 1.
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`[0026]
`In this example the microprocessor 9 comprises a
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`usage counter 8 or timer, equivalent to a charge rate device
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`which, for example, counts the durations of actual usage of
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`the terminal 1 and which, by comparison with a threshold
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`value input
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`inhibits
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`transcoding of the unit 3 to make it transparent. The number
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`input into the keypad is transmitted to the card 10 without
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`transformation.
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`[0027] The terminal can then only function in a standard
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`manner with the PIN code of the card which is inaccessible
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`to the user. In other words the Teaser makes provision to
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`return the terminal 1 to a state of operation without matching
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`when the terminal is not being loaned, ie. he makes provi-
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`sion to be able to use the terminal himself by inputting the
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`PIN in the memory in the card without transcoding or time
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`limit.
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`4of4
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`4 of 4
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