公开(公告)号：US20030118079A1

公开(公告)日：2003-06-26

申请号：US10325491

申请日：2002-12-19

Applicant: STMicroelectronics S.A.

Inventor： Fabrice Marinet ,  Benjamin Duval

IPC: G01K007/00

CPC classification number: G01K3/005 ,  G01K15/00

Abstract: An integrated temperature sensor delivers threshold detection signals when temperature thresholds have been exceeded. The temperature sensor includes a circuit for detecting a first temperature threshold having a first detection threshold, and for detecting a second temperature threshold having a second detection threshold. The circuit also detects a third temperature threshold between the first and second temperature thresholds, and detects a fourth temperature threshold between the first and second temperature thresholds. The third temperature threshold has a third detection threshold linked with the first detection threshold so that a deviation of the first detection threshold causes a corresponding deviation of the third detection threshold. Similarly, the fourth temperature has a fourth detection threshold linked with the second detection threshold so that a deviation of the second detection threshold causes a corresponding deviation of the fourth detection threshold. The third and fourth temperature thresholds define a temperature window to test the temperature sensor for detecting a deviation of the first and second detection thresholds.

Abstract translation: 当超过温度阈值时，集成温度传感器提供阈值检测信号。 温度传感器包括用于检测具有第一检测阈值的第一温度阈值并用于检测具有第二检测阈值的第二温度阈值的电路。 电路还检测第一和第二温度阈值之间的第三温度阈值，并且检测第一和第二温度阈值之间的第四温度阈值。 第三温度阈值具有与第一检测阈值相关联的第三检测阈值，使得第一检测阈值的偏差导致第三检测阈值的相应偏差。 类似地，第四温度具有与第二检测阈值相关联的第四检测阈值，使得第二检测阈值的偏差导致第四检测阈值的相应偏差。 第三和第四温度阈值定义了温度窗口，以测试温度传感器，用于检测第一和第二检测阈值的偏差。

公开(公告)号：US20010023423A1

公开(公告)日：2001-09-20

申请号：US09805265

申请日：2001-03-13

Applicant: STMicroelectronics S.A.

Inventor： Fabrice Marinet

IPC: G06F001/02

CPC classification number: H03K3/84

Abstract: A pseudo-random number generator includes a first generator for producing a sawtooth waveform signal having a first frequency, and a second generator for producing a pulse signal having a second frequency. A sampling circuit samples the sawtooth waveform signal and the pulse signal for generating a sample signal of the sawtooth waveform signal at the second frequency. A coding circuit codes the amplitude of the sample signal to supply binary values. The pseudo-random number generator has applications in integrated circuits which are used in contact type or contactless IC cards.

Abstract translation: 伪随机数发生器包括用于产生具有第一频率的锯齿波形信号的第一发生器和用于产生具有第二频率的脉冲信号的第二发生器。 采样电路对锯齿波形信号和脉冲信号进行采样，以产生第二频率的锯齿波形信号的采样信号。 编码电路对采样信号的幅度进行编码以提供二进制值。 伪随机数发生器在用于接触型或非接触式IC卡的集成电路中具有应用。

公开(公告)号：US20010020857A1

公开(公告)日：2001-09-13

申请号：US09771364

申请日：2001-01-26

Applicant: STMicroelectronics S.A.

Inventor： Alexandre Malherbe ,  Fabrice Marinet ,  Alain Pomet

IPC: H03K005/01

CPC classification number: G06K19/07 ,  G06F13/426

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.

Abstract translation: 用于从外部串行总线再生时钟信号的装置包括环形振荡器和计数器。 环形振荡器提供时钟信号的n个相位。 在这n个阶段中，使用一个相作为参考，并将其应用于计数器。 因此，可以对从总线接收的第一脉冲和第二脉冲之间的整个参考时钟信号周期的数量进行计数。 在接收到第二脉冲时读取振荡器中的相位状态，确定与基准时钟信号和总线的第二脉冲之间的相位延迟相对应的电流相位。 通过使用还包括环形振荡器和计数器的再生装置，可以高精度地重新生成总线的时钟信号。

公开(公告)号：US20020124183A1

公开(公告)日：2002-09-05

申请号：US10004527

申请日：2001-11-01

Applicant: STMicroelectronics S.A.

Inventor： Fabrice Marinet ,  Sylvie Wuidart

IPC: G06F011/30

CPC classification number: G06F21/755 ,  G06F2221/2143

Abstract: Before a predetermined processing sequence, the integrated circuit detects the state of at least one timer. The circuit controls the activation of the timer if it is not activated, and disables itself if the timer is activated.

Abstract translation: 在预定的处理顺序之前，集成电路检测至少一个定时器的状态。 如果定时器未激活，则电路控制定时器的激活，如果定时器被激活，则它将自动禁止。

公开(公告)号：US20020080965A1

公开(公告)日：2002-06-27

申请号：US09995258

申请日：2001-11-27

Applicant: STMicroelectronics S.A.

Inventor： Fabrice Marinet ,  Alexandre Malherbe

IPC: H04L009/00

CPC classification number: G06F7/588 ,  G06K19/073 ,  G06K19/07363 ,  H03K3/84

Abstract: A random signal generator uses a folded MOS transistor, whose drain-source current includes a random component, as an electronic noise source. The random signal generator generates a random binary signal from the random component. The invention may be applied, in particular, to smart cards.

Abstract translation: 随机信号发生器使用其漏源电流包括随机分量的折叠MOS晶体管作为电子噪声源。 随机信号发生器从随机分量生成随机二进制信号。 本发明特别可以应用于智能卡。