公开(公告)号：US20020109536A1

公开(公告)日：2002-08-15

申请号：US10021287

申请日：2001-10-30

Applicant: STMicroelectronics S.A.

Inventor： Bruno Gailhard ,  Olivier Ferrand

IPC: H03L007/06

CPC classification number: H03K3/03 ,  H03L7/0997

Abstract: A generator includes an oscillator for producing a clock signal from N logic signals representing an N-bit control number, with N being an integer greater than 1. The oscillator has Nnull1 components. The N most significant components are each assigned a place value i ranging from 1 to N, and a least significant component provides the clock signal. At least one component with a place value i greater than 1 includes first and second arms. The first arm includes a cell and a first switch connected in series, and the second arm includes 1null21 cells and a second switch connected in series. Each cell includes an odd number of inverters.

Abstract translation: 发生器包括用于从表示N位控制号的N个逻辑信号产生时钟信号的振荡器，其中N是大于1的整数。振荡器具有N + 1个分量。 N个最重要的组件每个被分配一个从1到N的位置值i，并且最不重要的组件提供时钟信号。 位置值i大于1的至少一个部件包括第一和第二臂。 第一臂包括串联连接的单元和第一开关，第二臂包括1 + 21单元和串联连接的第二开关。 每个单元包括奇数个逆变器。

公开(公告)号：US20020089360A1

公开(公告)日：2002-07-11

申请号：US10013316

申请日：2001-10-30

Applicant: STMicroelectronics S.A.

Inventor： Bruno Gailhard ,  Olivier Ferrand

IPC: H03L007/06

CPC classification number: H03L7/0891 ,  H03L7/18

Abstract: A generator producing a clock signal whose frequency depends on a control voltage includes a comparator for comparing a period of the clock signal with a desired period, and for providing at least one first control signal based upon the comparison. The generator includes a sampler circuit for sampling the first control signal, and for producing a first sampled control signal. The generator also includes a voltage generator for providing the variable control voltage as a function of the first sampled control signal.

Abstract translation: 产生频率取决于控制电压的时钟信号的发生器包括用于将时钟信号的周期与期望周期进行比较的比较器，并且用于基于该比较来提供至少一个第一控制信号。 发生器包括用于对第一控制信号进行采样并用于产生第一采样控制信号的采样器电路。 发电机还包括用于根据第一采样控制信号提供可变控制电压的电压发生器。

公开(公告)号：US20020105234A1

公开(公告)日：2002-08-08

申请号：US10059444

申请日：2002-01-29

Applicant: STMicroelectronics S.A.

Inventor： Ludovic Ruat ,  Olivier Ferrand ,  Bruno Gailhard

IPC: H02J001/00

CPC classification number: G06K7/0069 ,  G06K7/0013 ,  G06K7/006 ,  G06K7/0086 ,  Y10T307/937

Abstract: A smart card reader includes a housing for receiving a smart card, a microprocessor, and a connector for connecting the microprocessor to the received smart card for establishing communications therebetween. A voltage source provides a power supply voltage to the microprocessor based upon the smart card being received in the housing. The smart card reader further includes a first switch interposed between the voltage source and a power supply terminal of the microprocessor. The first switch is closed when the received smart card is at an end of travel in the housing so that the power supply voltage is provided to the microprocessor, and is opened when the received smart card is no longer at the end of travel in the housing so that the power supply voltage is not provided to the microprocessor.

Abstract translation: 智能卡读取器包括用于接收智能卡的壳体，微处理器和用于将微处理器连接到接收的智能卡的连接器，用于在其间建立通信。 电压源基于智能卡被接收在外壳中而向微处理器提供电源电压。 智能卡读卡器还包括插入在电压源和微处理器的电源端之间的第一开关。 当接收到的智能卡处于壳体行程结束时，第一开关闭合，使得电源电压被提供给微处理器，并且当接收到的智能卡不再在外壳中行进结束时打开 使得不向微处理器提供电源电压。

公开(公告)号：US20030132796A1

公开(公告)日：2003-07-17

申请号：US10303650

申请日：2002-11-25

Applicant: STMicroelectronics S.A.

Inventor： Bruno Gailhard ,  Olivier Ferrand

IPC: G05F001/10

CPC classification number: G05F3/30 ,  G05F3/267

Abstract: A temperature-compensated current source includes a first arm fixing a reference voltage, a second arm fixing a reference current, and a third arm providing an output current obtained by copying the reference current in a first current mirror. A second current mirror copies, in the voltage reference arm, the reference current while a voltage copying circuit copies the reference voltage at a node of the second arm connected to ground by a first resistor series-connected with n parallel-connected diodes. A second resistor is parallel-connected with the assembly formed by the first resistor series-connected with the n parallel-connected diodes.

Abstract translation: 温度补偿电流源包括固定参考电压的第一臂，固定参考电流的第二臂和提供通过在第一电流镜中复制参考电流而获得的输出电流的第三臂。 第二电流镜在电压参考臂中复制参考电流，而电压复制电路通过与n个并联连接的二极管串联连接的第一电阻器连接到地的第二臂的节点复制参考电压。 第二电阻器与由与n个并联二极管串联连接的第一电阻器形成的组件并联连接。

公开(公告)号：US20020109554A1

公开(公告)日：2002-08-15

申请号：US10021282

申请日：2001-10-30

Applicant: STMicroelectronics S.A.

Inventor： Bruno Gailhard ,  Olivier Ferrand

IPC: H03B001/00

CPC classification number: H03L7/0997 ,  G06F1/08

Abstract: A generator includes an oscillator for producing a clock signal from an N-bit control number. The oscillator includes a first group of cells, with each cell including at least one series connected inverter. A first selection circuit selects a variable number of the cells as a function of the most significant bits of the control number. The oscillator also includes a second group of cells, with each cell including at least one series connected inverter. A second selection circuit selects one of the cells as a function of the least significant bits of the control number. The selected cells of the first and second groups of cells are series connected to form a chain of inverters.

Abstract translation: 发生器包括用于从N位控制编号产生时钟信号的振荡器。 振荡器包括第一组单元，每个单元包括至少一个串联的反相器。 第一选择电路根据控制数的最高有效位选择可变数目的单元。 振荡器还包括第二组单元，每个单元包括至少一个串联连接的反相器。 第二选择电路根据控制号的最低有效位选择一个单元。 第一和第二组电池的所选择的电池被串联连接以形成一个反相器链。