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公开(公告)号：FR2797070A1
公开(公告)日：2001-02-02
申请号：FR9910150
申请日：1999-07-30
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , FERRAND OLIVIER , GAILHARD BRUNO
Abstract: The invention concerns a smart card reader (20) comprising a housing for receiving the card, a microprocessor (30), means for connecting the microprocessor to the smart card inserted in the housing and a voltage source (21). The invention is characterised in that the microprocessor (30) is electrically powered by the voltage source (21) via a switch (24) which is normally open, and is arranged to be closed when the card is completely inserted in the housing. The invention is particularly applicable to viewer card readers powered by an electric battery.
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公开(公告)号：DE60202697T2
公开(公告)日：2006-04-06
申请号：DE60202697
申请日：2002-10-11
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , KINOWSKI PAUL , CZAJOR ALEXANDER
Abstract: An asynchronous data transmission device includes a data reception terminal receiving data clocked by a sampling signal in synchronization with a local clock signal. A register is connected to the data reception terminal for receiving the data. A clock deviation measuring circuit is connected to the register for determining a number M of periods of the sampling signal appearing during K periods of a synchronization signal received on the data reception terminal, and for comparing the number M to a tolerance margin defined by a lower threshold and an upper threshold.
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公开(公告)号：DE60202696T2
公开(公告)日：2006-01-05
申请号：DE60202696
申请日：2002-10-11
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , KINOWSKI PAUL , CZAJOR ALEXANDER
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公开(公告)号：FR2831968B1
公开(公告)日：2004-06-25
申请号：FR0114300
申请日：2001-11-06
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , KINOWSKI PAUL , CZAJOR ALEXANDER
Abstract: Calibration device (CAL) receives a local clock signal from an oscillator (OSC) and applies a correction value to the signal to produce a corrected clock signal (CKC). The correction value is determined based on an external reference signal. The invention also relates to a corresponding integrated circuit, microcontroller and calibration method.
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公开(公告)号：FR2830954A1
公开(公告)日：2003-04-18
申请号：FR0113269
申请日：2001-10-15
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , KINOWSKI PAUL , CZAJOR ALEXANDER
IPC: G06F13/38
Abstract: Device (UART1) comprises at least one receive data terminal (RPD) for receipt of data (RDT) and a receive data register (SREG1) which is connected to the receive data terminal. Said receive register is clocked by a strobe (CKS), which is synchronized with a local clock signal (CK). The device further comprises a clock deviation measuring circuit (DMC, B1, B2) which is used to determine the number of strobe periods (M) that appear during K periods of a synchronization signal and to compare the strobe period value with upper and lower thresholds. The invention also relates to a corresponding microcontroller and method for transmission of asynchronous data.
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Patent Agency Ranking
公开(公告)号：FR2817417A1
公开(公告)日：2002-05-31
申请号：FR0015307
申请日：2000-11-28
Applicant: ST MICROELECTRONICS SA
Inventor： ROCHE FRANCK , NARCHE PASCAL , RUAT LUDOVIC
IPC: G01R31/317 , G06F11/22 , H03K21/38 , G06F11/30 , G06F13/00 , H03K19/003
Abstract: The microprocessor has a counter (CNTR) with a count input (E1) and a reset input (E2). The reset input is controlled by a signal (CS) present on a microprocessor pin (P2). The control signal is set either internally (R1) or externally to a logic value that ensures the counter reset is active during the initialization of the microprocessor.
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公开(公告)号：FR2797070B1
公开(公告)日：2001-09-28
申请号：FR9910150
申请日：1999-07-30
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , FERRAND OLIVIER , GAILHARD BRUNO
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.
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公开(公告)号：FR2797120B1
公开(公告)日：2001-09-14
申请号：FR9910149
申请日：1999-07-30
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , FERRAND OLIVIER
Abstract: The invention relates to a digital timer (20) comprising a binary counter (21) driven by a counting clock signal (Hc), the counter (21) presenting a stabilization time after each counting pulse, and means for delivering a detection signal (DS2) with a predetermined value when a counting order (N) is reached by the counter. According to the invention, the timer comprises wired logic means (22) arranged for detecting, at the output of the counter, a counting value (N-1) which is immediately before the counting order (N) in relation to the counting direction, and delivering an intermediate signal (DS1) with a predetermined value, as well means (24) for sampling the intermediate signal (DS1) at a moment when the counter receives the next counting pulse.
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公开(公告)号：DE60203133D1
公开(公告)日：2005-04-07
申请号：DE60203133
申请日：2002-10-11
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , KINOWSKI PAUL , CZAJOR ALEXANDER
IPC: G06F13/38
Abstract: A device for receiving asynchronous frames beginning with a header field, the device including a circuit for switching into a stand-by mode, a circuit for recognizing a header field, and a circuit for leaving the stand-by mode when a valid header field is recognized, the stand-by mode including the filtering of at least one signal likely to be emitted by the receiver device during the reception of a header field. The device is suitable in particular for UART circuits that are present in microcontrollers.
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公开(公告)号：DE60003315T2
公开(公告)日：2004-04-29
申请号：DE60003315
申请日：2000-07-25
Applicant: ST MICROELECTRONICS SA
Inventor： RUAT LUDOVIC , FERRAND OLIVIER , GAILHARD BRUNO
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.
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