36.
    发明专利
    未知

    公开(公告)号:FR2808945A1

    公开(公告)日:2001-11-16

    申请号:FR0006065

    申请日:2000-05-12

    Inventor: WUIDART LUC

    Abstract: A terminal for generating a high-frequency electromagnetic field by an oscillating circuit, adapted to cooperating with at least one transponder when the transponder enters this field, and a method for establishing a communication between the devices, including circuitry for regulating the signal phase in the oscillating circuit with respect to a reference value and circuitry for evaluating, based on a measurement of the current in the oscillating circuit, the minimum number of transponders present in the field.

    37.
    发明专利
    未知

    公开(公告)号:FR2792136B1

    公开(公告)日:2001-11-16

    申请号:FR9904549

    申请日:1999-04-07

    Abstract: A terminal (40) and a transponder (10) contain a corresponding oscillating circuit (Li,Ci,24,L2,C2). An AM transmission of a signal sends a boundary-mark toward the transponder a signal (Rx) undergo a phase demodulation in the boundary-mark. The depth o modulation (tm) of the amplitude is lower than 100%. An Independent claim is included for: (a) a terminal for performing a claimed method (b) a transponder

    38.
    发明专利
    未知

    公开(公告)号:DE60041298D1

    公开(公告)日:2009-02-26

    申请号:DE60041298

    申请日:2000-04-06

    Abstract: A terminal (40) and a transponder (10) contain a corresponding oscillating circuit (Li,Ci,24,L2,C2). An AM transmission of a signal sends a boundary-mark toward the transponder a signal (Rx) undergo a phase demodulation in the boundary-mark. The depth o modulation (tm) of the amplitude is lower than 100%. An Independent claim is included for: (a) a terminal for performing a claimed method (b) a transponder

    39.
    发明专利
    未知

    公开(公告)号:DE60223703T2

    公开(公告)日:2008-10-30

    申请号:DE60223703

    申请日:2002-09-10

    Abstract: The invention relates to a method of supplying a private quantity (s) in an integrated circuit involved in an authentication procedure by means of an external device that takes said private quantity into account. In order to verify the integrity of said memory element, the private quantity is a function of a signature (SIGN) of at least one memory element (4, 10, 11, 12) associated with the integrated circuit.

    40.
    发明专利
    未知

    公开(公告)号:DE60223636T2

    公开(公告)日:2008-10-30

    申请号:DE60223636

    申请日:2002-09-13

    Inventor: WUIDART LUC

    Abstract: A portable means of identification (10) has a fingerprint captor (1) which is associated with an extraction and digitization unit (12). An identifier (16) which is drawn from a system of physical parameters (17) such as a time constant relating to the captor is combined with the fingerprint data and scrambled (15). The result is compared (13) with a reference model (14) to give an identification An Independent claim is also included for: A portable identifying equipment which uses the captor physical parameter identifier

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