United States Patent
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`5,940,773
`[11] Patent Number:
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`[45] Date of Patent:
`Aug. 17, 1999
`Barvesten
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`[19]
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`US005940773A
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`ABSTRACT
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`[73] Assignee: Ericsson Inc., Research Triangle Park,
`N.C.
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`[21] Appl. No.: 08/529,154
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`.
`[22]
`Filed:
`Sep. 15, 1995
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`gs
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`Related U.S. Application Data
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`gs
`ar
`[63] Continuation of application No. 08/149,528, Nov. 9, 1993,
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`o, .
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`Foreign Application Priority Data
`[30]
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`[SE]
`Sweden seecssssesesneesseeensseees 9203351
`Nov. 9, 1992
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`Int. cl.° secceseaseean ens cessescseeeescseeeasen ers seeesseeeeeens H04Q 7/32
`[51]
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`[52] U.S. Ch. eee 455/558; 379/91.01; 379/153;
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`455/38.2
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`[58] Field of Search oo... cesses 455/558, 38.2;
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`379/91.01, 153; 235/380
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`[54] ACCESS CONTROLLED TERMINAL AND
`FOREIGN PATENT DOCUMENTS
`METHOD FOR RENDERING
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`9/1988 European Pat. Off. .
`281 728
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`COMMUNICATION SERVICES 0301 740=2/1989 Furopean Pat. Off. .
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`9/1991
`Inventor: Mats Olof Barvesten, Lund, Sweden
`0-448 369
`Furopean Pal. Off.
`[75]
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`Primary Examiner—William Cumming
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`Attorney, Agent, or Firm—Burms, Doane, Swecker &
`Mathis, L.L.P.
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`[57]
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`An arrangement for rendering services such as for example
`telephone communication, data communication and so on
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`comprising a terminal unit and an access unit, the terminal
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`unit comprising a terminal-unit-identification code (PIN,)
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`which is stored in the terminal unit and the access unit
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`comprising a first access identification code (IMSI), terminal
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`unit as well as an access unit being lockable. In the terminal
`unit are furthermore first access identification codes for a
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`given number ofaccess units (SIM)stored wherein upon
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`starting up of the device involving contact between terminal
`unit and actual access unit (SIM) with a certain access unit
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`identification code (IMSI,), identification code (IMSI.) of
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`the access unit is compared to in the terminal unit storedfirst
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`access identification code(s) (IMSI,) in the terminal unit,
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`correspondence between stored access identification code
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`(IMSI,) and actual access unit identification code (IMSI,)
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`leading to locking up of the terminal unit whereas non-
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`correspondence between stored and actual access unit iden-
`tification codes (IMSI,~IMSI.) respectively at
`least
`the
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`terminal unit identification code (PIN,) must be given.
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`[56]
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`4,815,123
`5,203,014
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`5,266,782
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`References Cited
`U.S. PATENT DOCUMENTS
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`3/1989 McGough ...cecssnscsseesenees 379/153
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`4/1993 Wagaietal. ....
`455/38.2
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`11/1993 Alanard et al.
`...ececeeseeeceeseee 379/91
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`13 Claims, 2 Drawing Sheets
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`DISPLAY
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`Page 1 of 7
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`SAMSUNG EXHIBIT 1006
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`Page | of 7
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`MICROSOFT CORP.
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`EXHIBIT 1006
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`Page 1 of 7
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`Page 1 of 7
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`SAMSUNG EXHIBIT 1006
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`U.S. Patent
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`Aug. 17, 1999
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`Sheet 1 of 2
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`5,940,773
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`DISPLAY
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`MIGRO-
`PROCESSOR
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`UNIT
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`FIG. |
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`Page 2 of 7
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`Page 2 of 7
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`Page 2 of 7
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`Page 2 of 7
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`

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`U.S. Patent
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`Aug. 17, 1999
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`Sheet 2 of 2
`
`5,940,773
`
`STORAGE OF
`(MSI (PINg, Pls)
`
`ACTIVATION OF
`TERMINAL UNIT
`
`FIG. 2
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`YES
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`GWE
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`TERMINAL UNIT
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`LOCKED UP
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`NO
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`ACTUAL
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`TERMINAL
`CODE = STORED CODE7
`is
`PIN
`MWSIo * MMSIs. {
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`ACTIVATED 2
`UNLOCKED
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`f=h,0
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`Pile
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`C
`STORED?
`ACTIVATED?
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`VES
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`YES
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`PICK UP PIN
`FROM STORAGE
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`TRANSFER PiTO CARD
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`CARD IS UNLOCKED
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`GIVE
`PIN
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`TEL. NO
`"0
`TEL. WO
`Wo
`STORED IN
`STORED IN
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`TERMINAL ?
`CARD 2
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` PICK UP FROM
`PICK UP FROM STORAGE
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`YES
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`OISPLAY TEL. WO
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`CARD - STORAGE
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`ARRANGEMENT PREPARED
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`Page 3 of 7
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`Page 3 of 7
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`Page 3 of 7
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`Page 3 of 7
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`

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`5,940,773
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`
`1
`ACCESS CONTROLLED TERMINAL AND
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`METHOD FOR RENDERING
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`COMMUNICATION SERVICES
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`2
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`In known analogue mobile telephone systems the sub-
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`scription is programmed into the telephone terminal. This is
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`done with special equipment and is handled by authorized
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`personnel whichis picked out and controlled by the operator,
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`therefore the same problems do notarise in this case.
`SUMMARYOF THE INVENTION
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`The object of the prescnt
`invention is to provide an
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`arrangement for rendering services wherein a terminal unit
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`as well as an access unit are safe against thefts and may not
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`easily be abused at the same timeas the device is easy to use
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`and in the normal case do not require a double entering of
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`codes and wherein particularly advantageous no entering or
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`giving of codesat all is necessary to give the owneror the
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`prioritized user access to the device without the device
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`therefore getting less sate or protected against thefts. A
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`further object with the invention is to provide an arrange-
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`ment which permits fast and easy access and wherein the
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`simplified access may be given to one or more users depend-
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`ing on whatis desired.
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`These and other objects are achieved through an arrange-
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`for
`rendering services such as telephone
`ment
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`communication, data communication, e t c, comprising a
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`terminal unit and an access unit, the terminal unit compris-
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`ing terminal unit identification means (PIN,) being stored in
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`the terminal unit and the access unit comprising first access-
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`unit-identification means (IMSI) in the form of a code or
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`similar, terminal unit as well as access unit being lockable,
`wherein in the terminal unit furthermore are stored first
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`access-unit-identification means (IMSI,;) for a given num-
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`ber (n) of access units (SIM), wherein uponstarting up of the
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`arrangementinvolving contact between the terminal unit and
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`an access unit (SIM) with a certain access-unit-identification
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`means (IMSI,), the code of the identification means (IMSI,)
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`of the access unit is compared with in the terminal unit
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`stored code(-s) for access-unit-identification means (IMSI,
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`i), Wherein correspondence between stored access-unit-
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`identification means (IMSI,;) and actual access-unit-
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`identification means (IMSI_) leads to locking up of the
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`terminal unit whereas upon non-correspondence between
`stored and actual access-unit-identification means at least
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`the terminal-unit-identification code (PIN,) is to be given.
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`In one aspect of the invention a second access-unit-
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`identification means (PIN.) of the access unit (STM) can be
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`activated or inactivated,i.e. a personalidentification number
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`of the card. If the actual access identification code (IMSI,)
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`does not correspond to any first acccss-unit-identification
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`code (IMSI,;) stored in the storage of the terminal unit and
`if the second access-unit-identification means are activated
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`and comprises a code (PIN,), this code has to be given to
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`lock up or activate the actual access unit.
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`This code, PIN, could e.g. be given manually by the user.
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`In another aspect of the invention may also the second
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`access-unit-identification means (PIN,) be stored in the
`terminal unit. If then the actual first access identification
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`code corresponds to a stored access identification means
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`(IMSI,=IMSI_), the terminal unit automatically transfers the
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`second access-unit-identification means (PIN) to the access
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`unit so that the arrangement can be used without the second
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`access-unit-identification code (PIN,.) having to be given by
`the user.
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`In one aspect of the invention, and if the second access-
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`unit-identification means (PIN,) are not stored in the termi-
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`nal unit, correspondence between in the terminal unit stored
`first access-unit-identification and the actual access-unit-
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`identification means, the access unit is locked up through the
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`giving of PIN,, ie.
`the second access-unit-identification
`means/code.
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`This application is a continuation of application Ser. No.
`08/149,528, filed Nov. 9, 1993, abandoned.
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`TECHNICAL FIELD
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`The present invention relates to an arrangement for ren-
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`dering services such as telephone communication, data
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`communication etc. Such arrangements may undera lot of
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`circumstances easily be abused and are veryattractive to
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`steal which might have serious consequences. This is the
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`case as well if e.g. the access units are not lockable or are not
`locked as well as if the terminalunit is not lockable oris not
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`locked so that they merely can be used by users whoreally
`should have access to the one or the other of the units. This
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`is e.g. the case with mobile telephones where the subscrip-
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`tion is not related to a particular mobile telephone or
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`terminal unit but
`is related to a separate card. Then a
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`terminal unit or a telephone may be used with anycard. If
`on the other hand the access unit, or the card, is not locked,
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`anyone mayuse the card and therethrough also charge the
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`subscription. One way to solve this problem,Le. to protect
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`the terminal unit as well as the access unit is to implement
`a “lock” in the terminal unit as well as in the access unit
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`wherethrough a user has to enter a code to “unlock” the
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`terminal unit and a further code to “lock up” the card and
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`thus get access to the subscription. ‘This however is tedious
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`since two different codes have to be entered each time upon
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`use which is very inconvenient, among others since it may
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`be difficult to remember the increasing number of codes
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`which are necessary in the society and also because it is
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`annoying to, each time, which may be a large number of
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`times, having to enter two codes.It is therefore very prob-
`able that the user inactivates one or the other of the codes or
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`io the worst case bothidentification codes in order to be able
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`to get a quick accessto his phone. The user then runs the risk
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`that the device, or one of the units comprised by the device
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`or arrangement, is abused or stolen.
`STATE OF THE ART
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`Devicesas referred to above are knownin the priorart but
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`as mentioned abovethey suffer the drawback that either two
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`different codes have to be entered upon every activation of
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`the terminal or it is simply not bothered to lock e.g.
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`terminal, but also in somecases, the card or the access unit.
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`This is for example the case with the digital GSM-system.
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`In this system the subscription is on a separate so called
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`SIM-card (Subscriber Identity Module). In this case the
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`terminal unit, or the telephone, is very attractive for stealing
`since the SIM-card which should have access to the tele-
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`phone simply can be exchanged through another SIM-card
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`and therethrough the telephone may be used freely by users
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`whoshould not have access to the, in this case, telephone.
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`This is particularly the case when the terminal units are
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`intendedto be used bya particular user or a particular group
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`of users or when the terminal quite simply is stolen. In the
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`known device the access unit, or the SI[M-card, comprises a
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`so called PIN-code (Personal Identification Number)
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`whereas the terminal unit, or the telephone, in turn com-
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`priscs another PIN-codc so that
`in order to get a full
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`protection of terminal unit (telephone) as well as access unit
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`(card), both codes must be entered at every activation of the
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`terminal unit or the telephone. This leads consequentlyto a
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`very awkward handling of the device.
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`ey}wn
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`40
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`3
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`In a further aspect of the invention and with non-
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`correspondence between stored and actualfirst access-unit-
`identification code, the terminal unit as well as the access
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`unit are unlocked or activated if either the terminal-
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`identification code or the second access-unit-identification
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`code is given.
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`In still another aspect, non correspondence between
`stored and actual
`first access-unit-identification codes
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`(IMSI_.#IMSI,) both the terminal identification code (PIN,)
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`and the second access-identification-code (PIN,) have to be
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`given for activation of the arrangement.
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`In one aspect of the invention, the terminal unit comprises
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`a mobile telephone, and particularly the access unit com-
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`prises a card.
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`Moreparticularly even, the access unit comprises a Sub-
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`scriber Identity Module-card which defines the subscription
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`of the mobile telephone.
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`In a further aspect of the invention the first access-unit-
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`identification code ofat least one subscription which should
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`have accessto the terminal unit (or telephone unit) is stored
`in the terminal unit, wherein the first access-unit-
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`identification code e.g. is stored in an EEPROM-storage in
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`a manner known per se, whole ofit, part of it, ciphered,
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`random numbergenerated with rest or similar.
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`In yet another aspect of the invention one or several
`further access-unit-identification codes are stored in the
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`storage of the terminal unit, partly, as a whole, ciphered or
`similar.
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`In still another aspect of the invention at least one second
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`access-unit-identification code is stored, ciphered or similar
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`in a storage in the terminal unit.
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`In a further aspect of the invention the storing ofthe first
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`access-unit-identification code takes place automatically or
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`in yet another aspect of the invention manually via e.g. a
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`pushbutton device or similar.
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`In one aspect of the invention at least one second access
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`identification code is stored in a storage in the terminal unit
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`in a way similar to the storing of the first access unit
`identification code.
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`In still another aspect of the invention at least one to an
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`access unit belonging telephone number is stored in a
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`terminal storage or in a storage in the card so that this is
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`picked up from the storage and shown ona display when the
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`arrangement is unlocked.
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`Another aspect of the invention relates to an arrangement
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`through which it is possible to, if so desired, obtain infor-
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`mation about identification number (for example telephone
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`number) or codes belonging to access units which have been
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`acceded simplified access.
`BRIEF DESCRIPTION OF THE DRAWINGS
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`The invention will in the following be further described
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`with reference to the accompanying drawingsin an explana-
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`tory and by no means limiting way, wherein
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`FIG. 1 schematically illustrates a terminal unit and an
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`access unit in the form of a telephone with a card,
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`FIG. 2 schematically illustrates an example of a flow
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`diagram with steps which are gone through upon activation
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`of the terminal for “locking up” of terminal unit as well as
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`access unit (in the illustrated case a telephone and a card).
`DETAILED DESCRIPTION OF THE
`
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`INVENTION
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`In the embodiment shown in FIG. 1 a device or an
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`arrangement 10 is shown wherein the terminal unit com-
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`5
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`10
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`i}wn
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`ey}wn
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`40
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`60
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`5,940,773
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`4
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`prises a mobile telephone 1 and the access unit comprises an
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`electronic card 2 comprising the subscription. The device
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`furthermore comprises a push button means 5, a memory 3
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`and a micro-processor unit 4. In the display 6 amongothers
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`elephone numbers are shown. In the shown embodiment the
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`device refers to the cellular so called GSM-mobile telephone
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`system, particularly the CME 20-system (Ericsson). In this
`contextit is also referred to recommendation GSM 11.11. In
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`he shown embodiment
`the card 2 with an electronic
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`memory comprises a so called SIM-card (Subscriber Iden-
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`ity Module) further described in Recommendation GSM
`02.17 which contains the information which
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`un-ambiguously identifies the subscriber. In the SIM-card 2
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`he so called IMSI-code (International Mobile Subscriber
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`Identity) is stored. A mobile station, MS, which for example
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`maybe a station mounted on a vehicle, a portable station or
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`a hand carried station may only be usedif a valid IMSI-code
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`is present.
`In the cases when the terminal unit or the
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`telephone 1 is not locked or secured by a so called EIR-
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`register (EquipmentIdentity Register) (not yet in use) which
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`in one way can be seen as a different alternative to the
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`present invention as theft protection is concerned, it would
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`be easy to abuse orsteal the terminal unit or the telephone
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`1. Upon starting up or activation of the telephone 1, the
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`telephone 1 and the SIM-card 2 communicate with each
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`other. The IMSI-code for the SIM-card(-s) 2 is (are) to be
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`stored in a memory in the phone, e.g.
`in an EEPROM-
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`storage. The IMSI-code may then be stored in a numberof
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`different ways which are knownperse, e.g. the whole ofit,
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`partly, non-ciphered or ciphered or random numbered gen-
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`erated with calculation of rest or any other method. The
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`storing may take place either automatically or manually.
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`According to an advantageous embodimentof the invention
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`it is possible to, apart from storing of the identity of the own
`SIM-card,i.e. its IMSI-code, also store the IMSI-codesof a
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`number of other SIM-cards which should have a simplified
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`or prioritized access to the terminal unit or the telephone 1.
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`Particularly under reference to the flow diagram of FIG.
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`2 the sequence will in the following be described wherein,
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`after one or more IMSI-codes have been stored in a storage
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`of a terminal unit as well as possibly also PIN, and PIN,
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`-codes, the terminal is activated or started up wherein a
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`number of different possibilities are possible depending on
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`the actual IMSI-code having been stored ornot.
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`Upon activation of the telephone, wherein either a card
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`already is present in the telephone 1 or a newone has been
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`introduced, the actual IMSI_,-code is sent to the telephone 1
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`(according to the GSM-recommendation) via the micropro-
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`cessor 4, as stated above, where it is comparcd to in the
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`telephone 1 stored IMSI,-code(-s). IS IMSI, correspondsto
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`any IMSI,-code being stored in the telephone 1, the tele-
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`phoneis started up without requiring anyfurther measure to
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`be taken or without asking for any further code. If on the
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`other hand there is no correspondence between the codes,
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`the telephone 1 demands a PIN,-code for the terminal unit or
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`the telephone 1.
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`Thus, on every occasion of activation of the telephone 1,
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`in the storage 3 stored code(-s) (IMSI,;) are compared with
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`received code (IMSI,) of the actual SIM-card. A so called
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`PIN-code for the SIM-card may likewise be stored in the
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`storage 3 in a way similar to that of the IMSI-code(-s). In the
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`storage 3 of the terminal unit (telephone) are one or more
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`IMSI-codes stored and also a PIN,, i.c. a Personal Identifi-
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`cation Number for the terminal. According to different
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`embodiments may furthermore PIN, of those cards whose
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`IMSI,-code(-s) have been stored, be stored therein as well as
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`a telephone numberfor the corresponding subscription. This
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`Page 5 of 7
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`Page 5 of 7
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`Page 5 of 7
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`Page 5 of 7
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`

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`5,940,773
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`10
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`20
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`5
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`is however dependent on desires and requirements and
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`provisions and merely indicate advantageous embodiments.
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`Now returning to the case wherein the actual IMSI,-code
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`does correspond to the stored IMSI,-code and the terminal
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`is locked up.
`It
`is thereafter investigated if the actual
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`PIN.-code of the card is stored. If yes, the PIN.-code of the
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`actual card is picked up from the storage 3 whereuponit is
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`transmitted to the card 2 which thereafter is locked up and
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`then the telephone 1 as well as the card (access unit) 2 are
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`unlocked and the device 10 is as far as locking is concerned
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`ready to be used or open for communication. In this case,
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`consequently, no entering of any codeis requiredofthe user.
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`(if PIN, is stored (and activated), this code is requested and
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`will then have to be entered or given).
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`If however the actual IMSI_-code does not correspond to
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`any stored IMSI,-code the terminal unit 1 or the telephone
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`1 requests a PIN,-code for the terminal. When this code is
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`given the terminal 1 is unlocked. Thereafter is asked if the
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`PIN,-codefor the card is activated. If not, the card is already
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`unlocked and thus was notlocked. If yes, the PIN.-code is
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`requested and whenthis is given, the card is locked up and
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`the device is ready to be used as far as locking is concerned.
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`If on the other hand the actual IMSI-code has corresponded
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`to a stored IMSI,-codeit is also possible that the PIN,-code
`of the actual card has not been stored. The terminalis in this
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`case, as already mentioned above, already unlocked. Thenit
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`is examined if any PIN.-code [orthe card is activated. If yes,
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`this is given whereuponthe card is locked up. If not, the card
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`consequently has not been locked andis therefore already
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`unlocked and the device is ready to be used as far as locking ,
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`is concerned. Thusit is possible for an authorized user,ie.
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`a user who should have accessto telephone as well as to card
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`not ta enter any code at all but that the card as well as the
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`terminal are unlocked automatically. If however the actual
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`IMSI_,-code has not been stored in the terminalit is possible
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`to get access by entering PIN-codes for terminal and card.
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`Eventually these codes could be associated with each other
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`and for example consist of one and the same code.
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`According to a preferred embodimentat least one IMSI_-
`code as well as also PIN-codes for card as well as for
`40
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`terminal are stored in the storage memory. To avoid the
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`storage of the PIN-code of the card it might also be possible,
`as mentioned above, to associate this with the PIN-code of
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`the terminal. According to a preferred embodimentis how-
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`ever the PIN.-code of the card stored in a ciphered form in
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`the memory 3.
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`The cards may for example comprise cards with an
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`electronical memory but also cards with a magnetical
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`memory or other alternatives are possible.
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`According to a preferred embadimentit is possible, in 5
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`case the IMS]_.-code of an actual card is stored in the storage
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`3 of the terminal 1,
`to show for example the telephone
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`numberof the actual subscription or the SIM-card which can
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`be useful since this in no other way is visible. Thenit is
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`examined, after unlocking of the card,
`if the telephone
`number of the card is stored in the terminal. If this is the
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`case, it is picked up from the storage and is shown on the
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`display 6. If the telephone number is not stored in the
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`terminal it is examined if the telephone numberis stored in
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`the card. If this is the case, the telephone numberis picked
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`up from the storage and is also shownonthe display6. If the
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`telephone numberis not stored, no display takes place. The
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`display of telephone numbers is advantageous since the
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`telephone number in no other way is visible, neither on the
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`terminal unit or on the card and if a user for example has
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`several cards it maybe difficult to remember the number as
`it is often difficult to remember the own number. Thisis the
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`60
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`a
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`6
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`case both if one or more telephone numbersis/are connected
`to stored IMSI-codes.
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`the storage of
`It is furthermore possible to carry out
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`different codes (IMSI, PIN)in the storage 3, either manually
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`or automatically. With manual storing it could for example
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`be effected by a so called push button device 5 or similar.
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`Furthermore, it should be possible to change stored codes as
`well as to delete codes or add codes.
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`The invention shall of course not be limited to the shown
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`embodiments and doesnot have to be a mobile telephone but
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`it is related to every device rendering services, e.g. devices
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`for data communication or others comprising a terminal unit
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`and an access unit which e.g. may comprise a subscription
`or similar and where it
`is desirable to secure the units
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`forming part of the device against theft and abuse. A device
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`mayalso comprise more than two units. The invention is
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`limited to the shown embodiments but can be freely varied
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`within the scope of the claims.
`I claim:
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`1. An arrangement for rendering services comprising:
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`an access unit having a first access-unit-identification
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`means, said access unit being lockable;
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`terminal unit having storage means for storing a
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`terminal-unit-identification means and for storing a
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`plurality of first access-unit-identification means, said
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`terminal unit being lockable, said terminal unit having
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`comparison means wherein upon start-up of said
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`arrangement and contact between said access unit and
`said terminal unit, said first access-unit-identification
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`means of said access unit is compared to said first
`access-unit-identification means of said access unit is
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`compared to said first access-unil-identification means
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`stored in said terminal unit storage means, and corre-
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`spondence betweensaid first access-unit-identification
`means of said access unit and at least one of said first
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`access-unit-identification means stored in said terminal
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`unit storage means provides locking up of said terminal
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`unit, and non-correspondencebetweensaidfirst access-
`unit-identification means of said access unit and said
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`first access-unit-identification meansstored in said ter-
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`minal unit storage means allows a code corresponding
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`to said terminal-unit-identification means to be given,
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`wherein said access unit further comprises a second
`access-unit-identification means and said terminal unit
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`storage means further stores a second access-unit-
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`identification means wherein upon correspondence
`between said first access-unit-identification means of
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`said access unit and at least one of said first access-
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`unit-identification means stored in said terminal unit
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`storage means, a code corresponding to said second
`access-unit-identification means stored in said terminal
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`unit storage means is automatically transferred to said
`second access-unit-identification means of said access
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`unit and use of the arrangement is allowed without
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`requiring a user to manually provide said code.
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`2. An arrangement for rendering services comprising:
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`an access unit having a first access-unit-identification
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`means, said access unit being lockable;
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`a terminal unit having storage means for storing a
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`terminal-unit-identification means and for storing a
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`plurality of first access-unit-identification means, said
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`terminal unit being lockable, said terminal unit having
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`comparison means wherein uponstart-up of said
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`arrangement and contact between said access unit and
`said terminal unit, said first access-unit-identification
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`means of said access unit is compared to said first
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`access-unit-identification means stored in said terminal
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