33.
    发明专利
    未知

    公开(公告)号:DE602004013885D1

    公开(公告)日:2008-07-03

    申请号:DE602004013885

    申请日:2004-06-10

    Abstract: The circuit has an input shift register (41) to receive bits flow and a comparator (42) to compare content of the register with predetermined patterns stored in a table (43). A load detector (44) detects overflow of counters with respect to a determined threshold. The detector provides the result to condition the state of a word or randomness validation bit of bit stream provided by random number generator.

    ALIMENTATION SECURISEE D'UN CIRCUIT INTEGRE

    公开(公告)号:FR2881851A1

    公开(公告)日:2006-08-11

    申请号:FR0550366

    申请日:2005-02-08

    Abstract: L'invention concerne un procédé et un circuit de brouillage de la signature en courant d'une charge (29) comportant au moins un circuit intégré exécutant des traitements numériques, consistant à alimenter au moins le circuit intégré à partir d'une tension d'alimentation (Vps) externe au circuit en combinant un courant (Ipsdc) fourni par un premier régulateur linéaire (4') avec un courant (Ipsac) fourni par au moins un circuit d'alimentation à découpage capacitif (5) à une ou plusieurs capacités commutées.

    38.
    发明专利
    未知

    公开(公告)号:FR2804521A1

    公开(公告)日:2001-08-03

    申请号:FR0001061

    申请日:2000-01-27

    Abstract: A device for the regeneration of a clock signal from an external serial bus includes a ring oscillator and counter. The ring oscillator provides n phases of a clock signal. Of these n phases, one phase is used as a reference and is applied to the counter. It is thus possible to count the number of entire reference clock signal periods between a first pulse and a second pulse received from the bus. In reading the state of the phases in the oscillator upon reception of the second pulse, a determination is made for a current phase corresponding to the phase delay between the reference clock signal and the second pulse of the bus. By using a regeneration device that also includes a ring oscillator and a counter, it is possible to regenerate the clock signal of the bus with high precision.

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