Anti-collision method for contactless electronic module
    311.
    发明申请
    Anti-collision method for contactless electronic module 有权
    非接触式电子模块的防碰撞方法

    公开(公告)号:US20040012486A1

    公开(公告)日:2004-01-22

    申请号:US10453454

    申请日:2003-06-03

    Inventor: Christophe Mani

    CPC classification number: G06K7/10029 G06K7/0008

    Abstract: An anti-collision method to identify and select contactless electronic modules (MDL) by a terminal is provided. A module may generate a random identification number prior to a communication, and respond to a general or complementary identification request on a time slot that varies according to its identification number. A non-selected module may generate a new random identification number when it receives a complementary identification request. Thus, the time slot of a non-selected module provided in response to a complementary identification request is not statistically the same as its time slot in response to a previous identification request, and it varies according to its identification number (ID).

    Abstract translation: 提供了一种通过终端识别和选择非接触电子模块(MDL)的防碰撞方法。 模块可以在通信之前生成随机标识号,并且在根据其标识号变化的时隙上响应一般或补充的标识请求。 未选择的模块可以在接收到补充标识请求时产生新的随机标识号。 因此,响应于补充识别请求而提供的未选择模块的时隙在响应于先前的识别请求时与其时隙在统计上不相同,并且根据其标识号(ID)而变化。

    Method and circuit for interlacing numeric data to reduce transmission errors
    313.
    发明申请
    Method and circuit for interlacing numeric data to reduce transmission errors 有权
    用于隔行数字数据以减少传输错误的方法和电路

    公开(公告)号:US20030233605A1

    公开(公告)日:2003-12-18

    申请号:US10424166

    申请日:2003-04-25

    Inventor: Charaf Hanna

    CPC classification number: H03M13/2785 H03M13/2707 H03M13/2764

    Abstract: A method for interlacing digital data to reduce transmission errors includes dividing a stream of digital data into consecutive blocks of bits, and interlacing each block of bits by writing to an interlacing table. The interlacing table is arranged in the form of rows and columns of memory addresses, with a number of the rows and columns corresponding to predetermined interlacing parameters. The access sequences to the memory addresses for interlacing the blocks of bits are different from each other. The method further includes reading a block of bits in the interlacing table according to a memory addresses access sequence, and also writing bits to a consecutive block of bits according to the memory addresses access sequence during the reading.

    Abstract translation: 用于交织数字数据以减少传输错误的方法包括将数字数据流划分成连续的比特块,并且通过写入交织表来交织每个比特块。 交错表以行和列的存储器地址的形式排列,其中多个行和列对应于预定的交织参数。 到用于交错位块的存储器地址的访问序列彼此不同。 该方法还包括根据存储器地址访问序列读取交织表中的位块,并且还在读取期间根据存储器地址访问顺序将位写入连续的位块。

    Electrically erasable and programmable memory comprising an internal supply voltage management device
    314.
    发明申请
    Electrically erasable and programmable memory comprising an internal supply voltage management device 有权
    电可擦除可编程存储器,包括内部电源电压管理装置

    公开(公告)号:US20030223289A1

    公开(公告)日:2003-12-04

    申请号:US10420533

    申请日:2003-04-22

    CPC classification number: G11C16/30

    Abstract: An electrically erasable and programmable memory includes an array of memory cells, and a distribution line linked to a receiving terminal of an external supply voltage and to a booster circuit. The distribution line provides an internal supply voltage. The distribution line is also linked to the receiving terminal through a diode or a diode circuit simulating operation of a diode. The memory includes a regulator for triggering the booster circuit when the internal supply voltage becomes lower than a threshold so as to maintain the internal supply voltage close to the threshold when the external supply voltage is too low, at least during the reading of memory cells. The diode or the diode circuit is blocked when the external supply voltage is too low.

    Abstract translation: 电可擦除和可编程存储器包括存储器单元的阵列,以及连接到外部电源电压的接收端的分配线和升压电路。 配电线路提供内部电源电压。 分配线还通过模拟二极管的操作的二极管或二极管电路与接收端相连。 存储器包括用于当内部电源电压变得低于阈值时触发升压电路的稳压器,以便至少在读取存储器单元期间,当外部电源电压太低时,内部电源电压保持接近阈值。 当外部电源电压太低时,二极管或二极管电路被阻塞。

    Method for scrambling the current consumption of an integrated circuit
    315.
    发明申请
    Method for scrambling the current consumption of an integrated circuit 有权
    用于扰乱集成电路的电流消耗的方法

    公开(公告)号:US20030219126A1

    公开(公告)日:2003-11-27

    申请号:US10388324

    申请日:2003-03-12

    Inventor: Sylvie Wuidart

    Abstract: A method for scrambling current consumption of an integrated circuit, at least during execution of a confidential operation by the integrated circuit that includes reading confidential data stored therein and/or the calculation of an encryption code is provided. The charge pump is activated to generate current consumption fluctuations on the electrical power supply line of the integrated circuit, at an intensity great enough to mask the current consumption variations associated with the execution of the confidential operation.

    Abstract translation: 提供一种用于加扰集成电路的电流消耗的方法,至少在由包括读取存储在其中的机密数据和/或加密代码的计算的集成电路执行机密操作期间。 电荷泵被激活以在集成电路的电源线上产生电流消耗波动,强度足以掩盖与执行机密操作相关联的当前消耗变化。

    Method of programming memory cells by breaking down antifuse elements
    316.
    发明申请
    Method of programming memory cells by breaking down antifuse elements 有权
    通过分解反熔丝元件来编程存储器单元的方法

    公开(公告)号:US20030218924A1

    公开(公告)日:2003-11-27

    申请号:US10406632

    申请日:2003-04-03

    CPC classification number: G11C17/18

    Abstract: A method of programming a row of antifuse memory cells includes breaking down at least N antifuse elements in the memory cells. The breakdown includes the application of a breakdown voltage to the anode of each antifuse element. The antifuse elements are broken down sequentially by groups of P antifuse elements, with P being less than N and at least equal to 1. The antifuse elements of a same group simultaneously receive the breakdown voltage. The breakdown of a next group of antifuse elements immediately takes place after the breakdown of a previous group of antifuse elements.

    Abstract translation: 一种编程反熔丝存储单元的行的方法包括在存储单元中分解至少N个反熔丝元件。 击穿包括向每个反熔丝元件的阳极施加击穿电压。 反熔丝元件依次由P个反熔丝元件分组,其中P小于N并且至少等于1.同一组的反熔丝元件同时接收击穿电压。 下一组反熔丝元件的故障立即发生在上一组反熔丝元件击穿之后。

    Method and circuit for the programming and erasure of a memory
    317.
    发明授权
    Method and circuit for the programming and erasure of a memory 失效
    用于编程和擦除存储器的方法和电路

    公开(公告)号:US5883833A

    公开(公告)日:1999-03-16

    申请号:US703811

    申请日:1996-08-27

    CPC classification number: G11C16/14 G11C16/12

    Abstract: A method and apparatus for the programming and erasure of a memory cell made out of floating-gate transistors and to the circuit pertaining thereto is described. It can be applied especially to non-volatile electrically erasable and programmable memories, for example EEPROMs and flash EPROMs. A programming voltage or erasure voltage including a voltage shift equal in value to a reference voltage is produced, followed by a voltage ramp comprising a rising phase followed possibly by voltage plateau, this voltage ramp being shifted in voltage by the value of the reference voltage and being followed, in turn, by a voltage drop. The value of the voltage shift is fixed at an intermediate value that is lower than the value of a so-called tunnel voltage of the memory cell but greater than the supply voltage.

    Abstract translation: 描述了由浮栅晶体管制成的存储单元的编程和擦除以及与其有关的电路的方法和装置。 它可以特别适用于非易失性电可擦除和可编程存储器,例如EEPROM和闪存EPROM。 产生包括与参考电压值相等的电压偏移的编程电压或擦除电压,随后是包括可能伴随电压平台的上升相的电压斜坡,该电压斜坡在电压上移动参考电压的值, 随之而来的是电压降。 电压偏移的值固定在比存储单元的所谓的隧道电压的值低的值的中间值,但大于电源电压。

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