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43 条记录 (耗时 0.022 秒)

    Circuit for filtering a signal and integrated circuit comprising such a circuit
    1.
    发明授权
    Circuit for filtering a signal and integrated circuit comprising such a circuit 失效
    用于滤波信号的电路和包括这种电路的集成电路

    公开(公告)号：US5467053A

    公开(公告)日：1995-11-14

    申请号：US286485

    申请日：1994-08-04

    申请人： Sylvie Wuidart ,  Tien-Dung Do

    发明人： Sylvie Wuidart ,  Tien-Dung Do

    IPC分类号： H03K5/19 ,  H03K5/1252 ,  H03K5/13 ,  H03K3/017 ,  H03K5/14

    CPC分类号： H03K5/1252 ,  H03K5/133

    摘要： A circuit for the filtering of a pulse signal comprises means to detect an output pulse upon the detection of an input pulse, the shape of this output pulse being based on elementary delays obtained by the charging and discharging of capacitors. During the generation of the output pulse, no new input pulse can be taken into account.

    摘要翻译： 用于滤波脉冲信号的电路包括在检测输入脉冲时检测输出脉冲的装置，该输出脉冲的形状基于通过电容器的充电和放电获得的基本延迟。 在产生输出脉冲期间，不能考虑新的输入脉冲。

    Protection of secret keys
    5.
    发明授权
    Protection of secret keys 有权
    保密密钥

    公开(公告)号：US08806109B2

    公开(公告)日：2014-08-12

    申请号：US13189672

    申请日：2011-07-25

    申请人： Sylvie Wuidart

    发明人： Sylvie Wuidart

    IPC分类号： G06F12/02 ,  G06F21/79

    CPC分类号： G06F12/0246 ,  G06F21/71 ,  G06F21/79

    摘要： A method for protecting at least first data of a non-volatile memory from which the extraction of this first data is triggered by the reading or the writing, by a processor from or into the memory, of second data independent from the first data, said first data being provided to a circuit which the processor cannot access.

    摘要翻译： 一种用于保护非易失性存储器的至少第一数据的方法，所述第一数据的提取由所述存储器中的处理器从所述存储器读取或写入触发，所述第二数据独立于所述第一数据，所述第二数据与所述第一数据无关， 第一数据被提供给处理器不能访问的电路。

    Device for protecting a memory against attacks by error injection
    6.
    发明授权
    Device for protecting a memory against attacks by error injection 有权
    用于保护内存免受错误注入攻击的设备

    公开(公告)号：US08045381B2

    公开(公告)日：2011-10-25

    申请号：US11920176

    申请日：2006-03-31

    申请人： Sylvie Wuidart

    发明人： Sylvie Wuidart

    IPC分类号： G11C11/34 ,  G11C7/00

    CPC分类号： G11C7/24 ,  G11C16/22

    摘要： A memory is secured against an error injection during the reading of a datum. The memory includes: means for reading a reference datum in the memory during a phase of reading a datum stored in the memory; means for comparing the reference datum read with an expected value; and means for generating an error signal if the datum read is different from the expected value. Application is provided particularly but not exclusively to the protection of memories integrated into smart cards.

    摘要翻译： 在读取数据时，可以防止存储器发生错误注入。 存储器包括：用于在读取存储在存储器中的数据的阶段期间读取存储器中的参考基准的装置; 用于将参考数据读取与期望值进行比较的装置; 以及用于在数据读取与预期值不同时产生错误信号的装置。 特别提供了应用，但不限于集成到智能卡中的存储器的保护。

    Reading of the state of a non-volatile storage element
    7.
    发明授权
    Reading of the state of a non-volatile storage element 有权
    读取非易失性存储元件的状态

    公开(公告)号：US07813216B2

    公开(公告)日：2010-10-12

    申请号：US11662995

    申请日：2005-09-13

    申请人： Sylvie Wuidart

    发明人： Sylvie Wuidart

    IPC分类号： G11C8/18

    CPC分类号： G11C7/06 ,  G11C2207/066

    摘要： A method for reading of the state of a non-volatile memory element, including conditioning the frequency of a first oscillatory to the state of this element, and comparing the frequency of the first oscillator with the predetermined frequency of a second oscillator, selected between two possible frequency values for the first oscillator, according to the state of the storage element.

    摘要翻译： 一种用于读取非易失性存储元件的状态的方法，包括将第一振荡的频率调节到该元件的状态，以及将第一振荡器的频率与第二振荡器的频率进行比较，所述第二振荡器的频率在两个 根据存储元件的状态，第一振荡器的可能频率值。

    Method for the detection of the presence of passivation in an integrated circuit
    8.
    发明授权
    Method for the detection of the presence of passivation in an integrated circuit 失效
    用于检测集成电路中钝化的存在的方法

    公开(公告)号：US5892369A

    公开(公告)日：1999-04-06

    申请号：US735547

    申请日：1996-10-23

    申请人： Laurent Sourgen ,  Sylvie Wuidart

    发明人： Laurent Sourgen ,  Sylvie Wuidart

    IPC分类号： H01L21/66 ,  H01L21/82 ,  H01L23/58 ,  G01R31/28

    CPC分类号： H01L23/576 ,  H01L2924/0002

    摘要： A method for detecting the presence of a passivation layer on an integrated circuit comprises sending out a train of pulses of different widths at one end of a line of metal that winds on the surface of the integrated circuit beneath the protection layer of the integrated circuit. The line of metal and the dielectric layer of the integrated circuit form an RC filter. The number of pulses received at the other end of the line of metal is counted and compared with at least one characteristic reference value of the filter.

    摘要翻译： 用于检测集成电路上钝化层的存在的方法包括在集成电路的保护层下方的集成电路表面上的金属线的一端发送不同宽度的脉冲序列。 集成电路的金属线和电介质层形成RC滤波器。 对金属线另一端接收的脉冲数进行计数，并与滤波器的至少一个特征基准值进行比较。

    Protected writing method for an integrated memory circuit and a corresponding integrated circuit
    9.
    发明授权
    Protected writing method for an integrated memory circuit and a corresponding integrated circuit 失效
    用于集成存储器电路和相应的集成电路的保护写入方法

    公开(公告)号：US5781470A

    公开(公告)日：1998-07-14

    申请号：US621185

    申请日：1996-03-21

    申请人： Laurent Sourgen ,  Sylvie Wuidart

    发明人： Laurent Sourgen ,  Sylvie Wuidart

    IPC分类号： G11C17/00 ,  G11C7/00 ,  G11C16/02 ,  G11C16/22 ,  G11C11/34

    CPC分类号： G11C7/00 ,  G11C16/22

    摘要： The present invention concerns a method for protecting a write operation of a memory cell within an integrated circuit that comprises the introduction of a random period (d1) between the reception of an external write command and the application of a physical variable to the memory cell so as to thwart the determination of the applied waveform characteristics as a function of time of this physical variable. The present invention also concerns an integrated circuit that comprises a memory whose write operation is protected according to this method. An application of the present invention is in the domain of chip carrying cards, i.e. smartcard applications.

    摘要翻译： 本发明涉及一种用于保护集成电路内的存储单元的写入操作的方法，该方法包括在接收外部写入命令和向存储器单元施加物理变量之间引入随机周期（d1） 以阻止作为该物理变量的时间的函数的应用波形特性的确定。 本发明还涉及一种集成电路，其包括根据该方法保护写入操作的存储器。 本发明的应用领域是芯片携带卡，即智能卡应用。

    Adaptable demodulator
    10.
    发明授权
    Adaptable demodulator 有权
    适应解调器

    公开(公告)号：US08243856B2

    公开(公告)日：2012-08-14

    申请号：US11111241

    申请日：2005-04-21

    申请人： Yveline Guilloux ,  Romain Palmade ,  Fabrice Romain ,  Sylvie Wuidart

    发明人： Yveline Guilloux ,  Romain Palmade ,  Fabrice Romain ,  Sylvie Wuidart

    IPC分类号： H03D1/00 ,  H04L27/06

    CPC分类号： H04L27/06 ,  H04L25/069

    摘要： A method and a circuit for detecting a binary state supported by an analog symbol, comprising sampling the symbol with a sampling signal based on a frequency having a period shorter than the duration of a symbol, selecting a number of significant samples smaller than the number of samples which would be obtained with a sampling of the symbol at said frequency, and deciding of the symbol state based on the selected samples.

    摘要翻译： 一种用于检测由模拟符号支持的二进制状态的方法和电路，包括基于具有比符号的持续时间短的周期的频率的采样信号对所述符号进行采样，选择少于所述符号的数量的有效样本数 将利用所述频率处的符号采样获得的采样，以及基于所选择的采样来确定符号状态。