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公开(公告)号：FR2792135A1
公开(公告)日：2000-10-13
申请号：FR9904548
申请日：1999-04-07
Applicant: ST MICROELECTRONICS SA
Inventor： WUIDART LUC , BARDOUILLET MICHEL , ENGUENT JEAN PIERRE
Abstract: The coupling between transponder and terminal is reduced by altering the resonant frequency of either the terminal or transponder coupling circuits when the two are in close proximity. When the coupling is reduced, the data rate for the communication between terminal and transponder is automatically increased, which can be achieved because the coupling is effectively a transformer coupling.
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公开(公告)号：DE60223636D1
公开(公告)日：2008-01-03
申请号：DE60223636
申请日：2002-09-13
Applicant: ST MICROELECTRONICS SA
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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公开(公告)号：DE69936439D1
公开(公告)日：2007-08-16
申请号：DE69936439
申请日：1999-12-20
Applicant: ST MICROELECTRONICS SA
Inventor： WUIDART LUC , BARDOUILLET MICHEL
Abstract: The transponder is of the type having an oscillating circuit (L2,C2) in front of a rectifier circuit (13) designed to produce a continuous voltage (Va) to an electronic circuit (17). The circuit (17) includes means for emitting digital data codes. The transponder has two capacitive modulation circuits (C2,K1; C4,K2) respectively associated with each end terminal of an inductive part (L2) of the oscillating circuit. A reference terminal of each modulating circuit is connected to a reference voltage (15) of the electronic circuit supply
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公开(公告)号：DE60125088D1
公开(公告)日：2007-01-25
申请号：DE60125088
申请日：2001-05-11
Applicant: ST MICROELECTRONICS SA
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.
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公开(公告)号：DE60205374D1
公开(公告)日：2005-09-08
申请号：DE60205374
申请日：2002-04-04
Applicant: ST MICROELECTRONICS SA
Inventor： BARDOUILLET MICHEL , WUIDART LUC
Abstract: The invention concerns an identification method and circuit ( 1 ) of the network type of parameters contained in an integrated circuit chip, comprising a single input terminal ( 2 ) for applying a signal (E) triggering an identification, the output terminals ( 3 1 , 3 2 , 3 i-1 , 3 i , 3 n-1 , 3 n ) adapted to deliver a binary identifying code (B 1 , B 2 , B i-1 , B i , B n-1 , B n ), first electrical paths P 1 , P 2 , P i , P n ), individually connecting said input terminal to each output terminal, and means ( 4, 5 1 , 5 2 , 5 i , 5 n ) for simultaneously integrating the binary states present in output of the electrical paths, each path inputting a delay sensitive to technological dispersions and/or of the integrated circuit fabrication method.
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Patent Agency Ranking
公开(公告)号：DE60102613T2
公开(公告)日：2005-03-31
申请号：DE60102613
申请日：2001-01-26
Applicant: ST MICROELECTRONICS SA
Inventor： WUIDART LUC
Abstract: A terminal for generating an electromagnetic field adapted to cooperating with at least one transponder when the latter enters its field and including an oscillating circuit adapted to receiving a high-frequency A.C. excitation voltage, circuitry for regulating the signal phase in the oscillating circuit with respect to a reference value, circuitry for determining an instantaneous information relative to the magnetic coupling between the transponder and the terminal, and circuitry for adapting the electromagnetic field power according to at least said present information.
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公开(公告)号：DE60201023D1
公开(公告)日：2004-09-23
申请号：DE60201023
申请日：2002-04-04
Applicant: ST MICROELECTRONICS SA
Inventor： BARDOUILLET MICHEL , WUIDART LUC
Abstract: The invention concerns a circuit ( 1 ) for storing a binary code (B 1 , B 2 , Bi- 1 , Bi, Bn- 1 , Bn) in an integrated circuit chip, comprising an input terminal ( 2 ) applying a signal (E) triggering reading of the code, output terminals ( 31, 32, 3 i-1, 3 i, 3 n-1, 3 n) for delivering said binary code, first electrical paths (P 1 , P 2 , Pi, Pn) individually connecting said input terminal to each output terminal, each path inputting a fixed delay in the manufacture of the integrated circuit, and means ( 4, 51, 52, 5 i, 5 n) simultaneously integrating the binary states present in output of the electrical paths.
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公开(公告)号：DE60102613D1
公开(公告)日：2004-05-13
申请号：DE60102613
申请日：2001-01-26
Applicant: ST MICROELECTRONICS SA
Inventor： WUIDART LUC
Abstract: A terminal for generating an electromagnetic field adapted to cooperating with at least one transponder when the latter enters its field and including an oscillating circuit adapted to receiving a high-frequency A.C. excitation voltage, circuitry for regulating the signal phase in the oscillating circuit with respect to a reference value, circuitry for determining an instantaneous information relative to the magnetic coupling between the transponder and the terminal, and circuitry for adapting the electromagnetic field power according to at least said present information.
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公开(公告)号：DE60102509D1
公开(公告)日：2004-05-06
申请号：DE60102509
申请日：2001-05-11
Applicant: ST MICROELECTRONICS SA
Inventor： WUIDART LUC
Abstract: A terminal for generating an electromagnetic field adapted to communicating with at least one transponder, and a method for controlling such a terminal including: an oscillating circuit adapted to being excited by a remote supply signal of the transponder; a phase demodulator for detecting possible data transmitted by the transponder; circuitry for regulating the signal phase in the terminal's oscillating circuit on a reference value; circuitry for measuring variables linked to the current in the oscillating circuit and to the voltage thereacross; and circuitry for comparing current values of these variables with predetermined values, to determine the presence of a transponder.
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公开(公告)号：FR2846462A1
公开(公告)日：2004-04-30
申请号：FR0213457
申请日：2002-10-28
Applicant: ST MICROELECTRONICS SA
Inventor： WUIDART LUC , ANGUILLE CLAUDE
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