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141 records (took 0.033 seconds)

    31.
    发明专利
    未知

    公开(公告)号：DE60201023T2

    公开(公告)日：2005-08-18

    申请号：DE60201023

    申请日：2002-04-04

    Applicant: ST MICROELECTRONICS SA

    Inventor： BARDOUILLET MICHEL ,  WUIDART LUC

    IPC: G11C17/00 ,  G06K19/10 ,  G11C5/00 ,  G11C8/20 ,  H03K3/356 ,  H03K5/15

    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.

    37.
    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

    Applicant: ST MICROELECTRONICS SA

    Inventor： WUIDART LUC

    IPC: H04B5/02 ,  G06K7/00 ,  H04B1/59 ,  H04B10/22

    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.

    38.
    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

    Applicant: ST MICROELECTRONICS SA

    Inventor： WUIDART LUC ,  BARDOUILLET MICHEL ,  ENGUENT JEAN PIERRE

    IPC: G06K19/07 ,  G06K7/00 ,  G06K17/00 ,  H04B1/59 ,  H04B5/02 ,  H04B7/14

    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：DE60041298D1

    公开(公告)日：2009-02-26

    申请号：DE60041298

    申请日：2000-04-06

    Applicant: ST MICROELECTRONICS SA

    Inventor： WUIDART LUC ,  BARDOUILLET MICHEL ,  ENGUENT JEAN-PIERRE

    IPC: G06K7/00 ,  G06K19/07 ,  G06K17/00 ,  H04B1/59 ,  H04B5/02

    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

    40.
    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

    Applicant: ST MICROELECTRONICS SA

    Inventor： WUIDART LUC ,  BALTHAZAR PIERRE

    IPC: G07F7/12 ,  H04L9/32 ,  G07F7/10

    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.

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