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`(12) United States Patent
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`US 6,836,654 B2
`(10) Patent N0.:
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`(45) Date of Patent:
`Dec. 28, 2004
`Decotignie
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`U3006836654B2
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`4/1993 Lee ....................... 340/82534
`5,204,663 A *
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`1/1999 Barvesten ............... 455/565
`5,864,765 A *
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`5/1999 Schroderus et al.
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`6(1999 Pinau!‘ ~~~~~~~~~~~~~~~~~~~ 455/558
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`5,978,670 A * 11/1999 Casolietal.
`..... 455/411
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`6,095,416 A *
`8/2000 Grant et al.
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`6,119,000 A *
`9/2000 Stephenson etal.
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`9/2000 Kolev etal. ............. 455/552
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`6,141,563 A * 10/2000 Miller et al.
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`6,339,643 B1 *
`”2002 Mastrocola et a].
`379/433.06
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`4/2002 Dccotignic ct al.
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`6/2002 Krause ................... 235/492
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`6,490,463 B1 * 12/2002 Portalier et a1.
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`6,542,731 B1 *
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`6,583,714 B1 *
`6/2003 Gabou et al.
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`FOREIGN PATENT DOCUMENTS
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`2287855 A
`9/1995
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`GB
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`* cited by examiner
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`Primary Examiner—William Trost
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`Assistant Examiner—Meless Zewdu
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`(74) Attorney, Agent, or Firmilack D. Slobod
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`(54) ANTI-THEFT PROTECTION FORA
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`RADIOTELEPHONY DEVICE
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`(75)
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`Inventor: Philippe Decotignie, Le Mans (FR)
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`(73) Asmgnee‘ EOELHMIJkENIEHhPS Eleammcs N'V"
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`1“ 0V6“
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`( *) Notice:
`Subjectto any disclaimer, the term of this
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`Paténf 15 extended or aOlJuSIed under 35
`U~5-C~ 154(b) by 509 daYS-
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`(21) APPI-N0~109/739 507
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`Dec. 18, 2000
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`(22) Filed:
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`(65)
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`Prior Publication Data
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`US 2001/0016484 A1 Aug. 23, 2001
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`Foreign Application Priority Data
`(30)
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`Dec. 21, 1999
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`............................................ 99 16136
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`(51)
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`Int. Cl.7 .......................... H04M 1/00; H04M 3/00;
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`H04M 1/66; H04B 1/06; H04B 1/38; H04Q 7/20
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`....................... 455/410; 455/411; 455/418;
`(52) US. Cl.
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`455/425; 455/550.1; 455/558; 455/565
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`(58) Field of Search ................................. 455/410, 411,
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`455/4121, 412.2, 418—419, 425, 550.1,
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`558, 26.1, 404.1, 557, 565—567; 380/264,
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`268, 273; 713/158, 502, 600, 601; 705/65,
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`66, 67
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`(56)
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`References Cited
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`U.S. PATENT DOCUMENTS
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`4,908,848 A *
`3/1990 Hanawa ...................... 455/565
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`4,945,556 A *
`7/1990 Namekawa
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`13
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`(57)
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`ABSTRACT
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`A mobile radiotelephony device intended for accommodat-
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`ing a linked user identification module offers protection
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`against theft. The device prevents a normal operation of the
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`device With an unlinked identification module, and permits
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`the normal operation of the device with the linked identifi-
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`cation module until such time the device has been inactive
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`for a defined period of time. A debugging code can be
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`supplied to the device subsequent
`to a detection of the
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`defined period of time to again permit the normal operation
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`of the device with linked identification module.
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`20 Claims, 2 Drawing Sheets
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`MICROSOFT CORP.
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`EXHIBIT 1001
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`Page 1 of 6
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`SAMSUNG EXHIBIT 1001
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`Page 1 of 6
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`Page 1 of 6
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`Page 1 of 6
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`SAMSUNG EXHIBIT 1001
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`US Patent
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`Dec. 28, 2004
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`Sheet 1 0f 2
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`US 6,836,654 B2
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` FIG. 1
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`13
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`Page 2 of 6
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`Page 2 of 6
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`Page 2 of 6
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`US. Patent
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`Dec. 28, 2004
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`Sheet 2 0f 2
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`US 6,836,654 B2
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`Page 3 of 6
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`Page 3 of 6
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`US 6,836,654 B2
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`1
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`ANTI-THEFT PROTECTION FOR A
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`RADIOTELEPHONY DEVICE
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`2
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`stored in the identification module, and the test means
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`compare the thus stored data with the data stored in the
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`identification module which is places inside the device. The
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`data stored is formed, for example, by the international
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`identification number IMSI which is contained in the iden-
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`tification module (compare standards relating to the GSM
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`radiotelephony systems). Thus, the identification module is
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`automatically linked to the device without the intervention
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`of the user, more particularly without the fact that a specific
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`code has to be entered.
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`Advantageously the deblocking code, which is to be
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`supplied to return to the normal operating mode, is formed
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`by the pin code (Personal Identity Number) which is con-
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`tained in the identification module (compare standards relat-
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`ing to the GSM radiotelephony systems). Thus the user need
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`not store an additional code to ensure the protection of his
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`device.
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`BRIEF DESCRIPTION OF THE DRAWINGS
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`These and other aspects of the invention are apparent
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`from and will be elucidated, by way of non-limitative
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`example, with reference to the embodiment(s) described
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`hereinafter.
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`In the drawings:
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`FIG. 1 represents a device in accordance with the
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`invention,
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`FIG. 2 represents an overall electric diagram of the device
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`of FIG. 1, and
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`FIG. 3 represents a flow chart explaining the operation of
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`the device of FIG. 1.
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`DESCRIPTION OF A PREFERRED
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`EMBODIMENT OF THE INVENTION
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`In FIG. 1 is represented an electronic device in accor-
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`dance with the invention. In the example described here this
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`device is a portable radiotelephone of the type used in
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`cellular systems. It notably comprises a microphone 5, a
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`loudspeaker 6, a screen 8, akeypad 9 and an antenna 11. The
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`device 1 also comprises a housing 12 intended for accom-
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`modating a user identification module 13. In the example of
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`embodiment described here, this identification module 13 is
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`a portable card of an integrated circuit in which information
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`is stored, notably an international
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`currently called IMSI number, and a Personal Identification
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`Number currently called PIN code.
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`FIG. 2 shows the overall electrical diagram of this device
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`1. The operation of the device 1 is, in essence, controlled by
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`a microprocessor assembly 20 which comprises a micropro-
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`cessor (“;1P”) 22 to which are associated a random access
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`memory (“RAM”) 24 and a read—only memory (“ROM”) 26.
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`This assembly is connected to a man-machine interface 30
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`Via a common line 32. This man-machine interface 32
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`controls the screen 8 and the keypad 9. The common line 32
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`also connects the microprocessor assembly 20 to a trans—
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`ceiver assembly (“TX”) 35 via an interface circuit 38. The
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`transceiver assembly 35 is connected to the antenna 11.
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`Finally, the common line 32 also connects the microproces-
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`sor assembly 20 to a card reader 39.
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`In FIG. 3 is represented a ftmction flow chart of a device
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`in accordance with the invention. This flow chart starts at
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`box K1. In box K1 the device is in a state of availability, that
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`is to say that the user has access to all the functions of the
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`device. The user has the choice of either or not locking his
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`device. This locking (L)/unlocking (UL) is done by access—
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`ing a configuration menu of the device. When the user locks
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`10
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`FIELD OF THE INVENTION
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`The invention relates to a mobile radiotelephony device
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`intended for accommodating a user identification module,
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`where the device has an established link to an identification
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`module to thereby prevent a normal operation of the device
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`when an identification module other than the linked identi-
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`fication module is mounted inside the device.
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`The invention also relates to a method of protecting such
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`a device, and a computer program for implementing such a
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`method.
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`The invention notably has applications in the field of
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`portable radiotelephony. Portable radiotelephony devices
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`are intended to accompany their users when they move
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`around. It happens that these devices are lost or stolen.
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`PRIOR ART OF THE INVENTION
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`US. Pat. No. 5,913,175, published Jun. 15, 1999
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`describes a method of protecting a radiotelephone which
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`permits to avoid that the lost or stolen telephone can be used
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`by a third party with another user identification module. This
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`method comprises establishing a link between the device
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`and a specific user identification module and blocking the
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`normal operation of the device when the user identification
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`module that is placed inside the device is not the one that is
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`linked to the device.
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`When the device is lost or stolen with the identification
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`module to which it is linked, the user is to warn the operator
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`so that the use of his identification module is blocked at
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`network level.
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`This means that the device can be freely used until the
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`identification module to which it is linked is blocked via the
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`network. This may take a certain period of time.
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`SUMMARY OF THE INVENTION
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`It is notably an object of the invention to resolve this
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`problem. For this purpose, a device in accordance with the
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`invention (1) verifies a user identification module mounted
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`inside the mobile radiotelephony device is linked to the
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`mobile radiotelephony device, (2) detects a period of inac-
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`tivity of the mobile radiotelephony device during a normal
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`operation of the mobile radiotelepony device, wherein the
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`normal operation includes a processing of all outgoing calls,
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`and (3) prevents the normal operation of the mobile radio-
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`telephony device in response to the verification of the user
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`identification module and in response to the detection of the
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`period of inactivity of the mobile radiotelephony device.
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`Thus, when the device falls into the hands of a third party
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`together with the identification module to which it is linked,
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`it has most probably been inactive for a period of time that
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`is sufficiently long for its normal operation to be blocked
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`(advantageously, the inactive time after which the blocking
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`means are activated is of the order of several minutes). The
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`device cannot thus be used without the deblocking code
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`being supplied.
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`Thanks to the invention the lost or stolen device becomes
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`totally unusable. A fraudulent person cannot send commu-
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`nications at the cost of the owner of the device. But neither
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`can he use the device with another identification module.
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`The theft of the device becomes totally useless. The inven-
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`tion thus forms a protection against theft.
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`the connecting
`In a particularly simple embodiment,
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`means comprise reading means and storage means of a data
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`Page 4 of 6
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`Page 4 of 6
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`Page 4 of 6
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`US 6,836,654 B2
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`3
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`his device (box K2), the identification module that is inside
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`the device is automatically linked to the device. For this
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`purpose, the device starts reading a data D1 in the identifi—
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`cation module (for example, the international identification
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`number IMSI) and he stores it in the random-access memory
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`24. Once locked, the device remains in the state of avail-
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`ability indicated in box K1. When the device is in the state
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`of availability, one looks whether it is locked (box K3). If it
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`is not locked (arrow N3), the device remains in the state of
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`availability indicated in box K1. If it is locked (arrow Y3),
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`one looks whether the identification module which is placed
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`inside the device is the one that is linked to the device (box
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`K4).
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`If the identification module, which is placed inside the
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`device, is not the one that is linked to the device (arrow N4),
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`the device goes to a first blocking state indicated in box K5.
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`In this first blocking state, the device is disconnected from
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`the network. Thus it can no longer receive an incoming call
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`nor transmit an outgoing call (possibly with the exception of
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`emergency numbers). In the blocking state K5, the screen
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`shows a message inviting the user to insert
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`module into the device. And when the user inserts a new
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`module, one looks whether this new identification module is
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`the one that is connected to the device (box K7). If this is the
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`case (arrow Y7), the device is reconnected to the network in
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`accordance with the normal procedure (box K8) and then the
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`device returns to the state of availability indicated in box K1.
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`If not (arrow N7), the operation is resumed in box K5. The
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`only way of leaving this first blocking state is thus to place
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`the identification module that is linked to the device inside
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`the device.
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`If the identification module that is placed inside the device
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`is linked to the device (arrow Y4), one looks whether the
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`device has remained in the state of availability for a certain
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`period of time T of the order of several minutes, for example
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`(box K10). If this is not the case (arrow N10), the device
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`remains in the state of availability indicated in box K1. If
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`this is the case (arrow Y10), the device passes on to a second
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`blocking state indicated in box K11 by passing through an
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`initialization step K12 which permits to initialize a variable
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`Awhich represents the number of attempts made at supply-
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`ing a deblocking code (for example, the Personal Identifi-
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`cation Number) PIN.
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`In this second blocking state the device only processes
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`incoming calls (box K13) and, possibly, the outgoing calls
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`that correspond to emergency numbers (box K14). Once
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`these calls have been processed, the device goes back to the
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`second blocking state indicated in box K11. In the second
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`blocking state K11 a message inviting the user to supply a
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`deblocking code is displayed on the screen. If the code taken
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`by the user is recognized (arrow Yll), the device goes back
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`to the state of availability indicated in box K1. If it is not
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`recognized (arrow N11), the value of the variable A is tested
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`(box K15). If this value is lower than a certain figure (for
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`example 3), the value of A is augmented by unity (box K16)
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`and a message is displayed on the screen to indicate the user
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`that the code is not valid (box K17). Then the device goes
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`back to the second blocking state indicated in box K11. If the
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`variable A is higher than or equal to said figure, the test of
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`box K15 causes the total blocking of the device indicated in
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`box K30. To leave this third blocking state it is necessary to
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`contact
`the organization that provides the identification
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`module. One is then again in the state of availability K1.
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`In another embodiment of the invention, when the user
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`locks the telephone, the device asks for the user’s name. The
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`name given by the user is stored in the random access
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`memory 24 of the device. \Vhen the identification module
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`10
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`15
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`20
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`30
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`35
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`40
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`45
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`50
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`60
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`65
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`4
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`that is inside the device is not the one that is linked to the
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`device,
`the device displays the name of the user before
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`asking him to insert his identification module as indicated in
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`box K5. The device also displays the name of the user before
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`asking him to supply his personal code as indicated in box
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`K11.
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`The embodiment that has just been described is particu-
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`larly effective, because it provides two separate blocldng
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`modes depending on whether the identification module that
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`is placed inside the device is either or not linked to the
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`device. The first blocking mode is applied in the case where
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`the device has been lost or stolen. The object is then to
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`prevent the device being usable with another identification
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`module. It thus advantageously blocks the incoming and
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`outgoing calls at the same time. The second blocking mode
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`is applied in the case where the identification module that is
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`linked to the device is in its place inside the device and the
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`device is in a state of availability. The object is to prevent a
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`third party being able to send outgoing calls with this device
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`if it is lost, stolen or left without attendance for some time.
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`In that case, it is desirable for the user to be able to continue
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`to directly receive his incoming calls.
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`In another embodiment the same blocking means are used
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`as the identification module which is placed inside the
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`device either or not linked to the device, for example, the
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`second blocking means.
`In that case it
`is possible for
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`receiving incoming calls intended for the identification
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`module that is inside the device, even when this identifica-
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`tion module placed inside the device is not linked to the
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`device.
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`While the embodiments of the invention disclosed herein
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`are presently considered to be preferred, various changes
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`and modifications can be made without departing from the
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`spirit and scope of the invention. The scope of the invention
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`is indicated in the appended claims, and all changes that
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`come within the meaning and range of equivalents are
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`intended to be embraced therein.
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`What is claimed is:
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`1. A mobile radiotelephony device, comprising:
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`blocking means for preventing a normal operation of the
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`mobile radiotelephony device, wherein the normal
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`operation includes a processing of outgoing calls;
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`timing means for activating the blocking means in
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`response to the mobile radiotelephony device being
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`inactive during the normal operation of the mobile
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`radiotelephony device for a defined period of time
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`subsequent to a mounting of a linked user identification
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`module inside the mobile radiotelephony device; and
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`deblocking means for permitting the normal operation of
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`the mobile radiotelephony device in response to a
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`supply of a deblocking code to the mobile radiotele—
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`phony device subsequent to the mounting of the linked
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`user identification module inside the mobile radiotele-
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`phony device and subsequent to the defined period of
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`time.
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`2. The mobile radiotelephony device of claim 1, wherein
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`an activation of the blocking means prevents all transmis-
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`sion of outgoing calls.
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`3. The mobile radiotelephony device of claim 1, wherein
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`an activation of the blocking means prevents all transmis-
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`sions of non-emergency outgoing calls and permits all
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`transmissions of emergency outgoing calls.
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`4. The mobile radiotelephony device of claim 1, further
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`comprising:
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`locking means for facilitating an activation of the block
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`means by the timing means.
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`Page 5 of 6
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`Page 5 of 6
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`US 6,836,654 B2
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`5
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`5. The mobile radiotelephony device of claim 1, further
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`comprising:
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`connecting means for establishing a link between the
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`mobile radiotelephony device and the linked user iden-
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`tification module.
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`6. The mobile radiotelephony device of claim 5, further
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`comprising:
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`locking means for facilitating an establishment of the link
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`between the mobile radiotelephony device and the
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`linked user identification module by the connection
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`means.
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`7. The mobile radiotelephony device of claim 1, wherein
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`an international identification number stored on the linked
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`user identification module is stored on the mobile radiote—
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`lephony device as data corresponding to a link between the
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`mobile radiotelephony device and the linked user identifi-
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`cation module.
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`8. The mobile radiotelephony device of claim 1, wherein
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`a personal identification number stored on the linked user
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`identification module is stored as the deblocking code on the
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`mobile radiotelephony device.
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`9. The mobile radiotelephony device of claim 1, further
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`comprising:
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`tcst means for activating the blocking means when any
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`unlinked user identification module is mounted inside
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`the mobile radiotelephony device.
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`10. A method of protecting a mobile radiotelephony
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`device, the method comprising:
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`verfying a user identification module mounted inside the
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`mobile radiotelephony device is linked to the mobile
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`radiotelephony device;
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`detecting a period of inactivity of the mobile radiotele-
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`phony device during a normal operation of the mobile
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`radiotelephony device, wherein the normal operation
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`includes a processing of all outgoing calls;
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`preventing the normal operation of the mobile radiotele-
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`phony device in response to the verification of the
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`linked user identification module and in response to the
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`detection of the period of inactivity of the mobile
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`radiotelephony device.
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`11. The method of claim 10, further comprising:
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`permitting the normal operation of the mobile radiotele-
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`phony device in response to the verification of the
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`linked user identification module and in response to a
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`supply of a deblocking code to the mobile radiotele-
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`phony device subsequent to the detection of the period
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`of inactivity of the mobile radiotelephony device.
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`12. The method of claim 10, wherein the prevention of the
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`normal operation of the mobile radiotelephony device pre-
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`vents all transmissions of outgoing calls.
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`13. The method of claim 10, wherein the prevention of the
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`normal operation of the mobile radiotelephony device pre-
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`vents all transmissions of non-emergency outgoing calls and
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`permits all transmissions of emergency outgoing calls.
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`10
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`15
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`20
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`30
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`35
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`40
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`45
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`Page 6 of 6
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`6
`14. The method claim 10, further comprising:
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`storing an international identification number stared on
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`the linked user identification module onto the mobile
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`radiotelephony device as data corresponding to a link
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`between the mobile radiotelephony device and the
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`linked user identification module.
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`15. The method claim 11, further comprising:
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`storing a personal identification number scored on the
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`linked user identification module onto the mobile
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`radiotelephony device as the debugging code.
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`16. The method of claim 10, further comprising:
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`preventing the normal operation of the mobile radiotele-
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`phony device in response to any unlinked user identi-
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`fication module being mounted inside the mobile radio—
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`telephony device.
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`17. In a mobile radiotelephony device, a computer read-
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`able medium comprising:
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`computer readable code for verifying a user identification
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`module mounted inside the mobile radiotelephony
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`device is linked to the mobile radiotelephony device;
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`computer readable code for detecting a period of inactiv-
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`ity of the mobile radiotelephony device during a normal
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`operation of the mobile radiotelephony device, wherein
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`the normal operation includes a processing of all out-
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`going calls;
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`computer readable code for preventing the normal opera-
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`tion of the mobile radiotelephony device in response to
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`the verification of the linked user identification module
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`and in response to the detection of the period of
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`inactivity of the mobile radiotelephony device.
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`18. The computer readable medium of claim 17, further
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`comprising:
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`computer readable code for permitting the normal opera—
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`tion of the mobile radiotelephony device in response to
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`the verification of the linked user identification module
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`and in response to a supply of a deblocking code to the
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`mobile radiotelephony device subsequent to the detec—
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`tion of the period of inactivity of the mobile radiote-
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`lephony device.
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`19. The computer readable medium of claim 13, further
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`comprising:
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`storing a personal identification number stored on the
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`linked uscr identification module onto the mobile
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`radiotelephony device as the deblocking code.
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`20. The computer readable medium of claim 17, further
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`comprising:
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`preventing the normal operation of the mobile radiotele-
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`phony device in response to any unlinked user identi—
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`fication module being mounted inside the mobile radio-
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`telephony device.
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`*
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`$
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`*
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`*
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`*
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`Page 6 of 6
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`Page 6 of 6
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`Page 6 of 6
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