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    DEMODULATOR
    2.
    发明申请
    DEMODULATOR 审中-公开
    解调器

    公开(公告)号：WO03007563A2

    公开(公告)日：2003-01-23

    申请号：PCT/DE0202407

    申请日：2002-07-02

    Applicant: INFINEON TECHNOLOGIES AG ,  NEBEL GERHARD ,  REINER ROBERT ,  SCHROEDER WERNER

    Inventor： NEBEL GERHARD ,  REINER ROBERT ,  SCHROEDER WERNER

    IPC: H04L27/06 ,  H04L25/00

    CPC classification number: H04L27/06

    Abstract: The invention relates to a demodulator for demodulating a voltage that is modulated by a modification of the amplitude between a low and a high level, especially for use in contact-less data transmission from a card write/read device to a chip card. The inventive demodulator is provided with a dynamic range circuit (2) that reduces the dynamic response of the input signal (1), a filter (3) disposed downstream of said dynamic range circuit (2) and adapted to filter a high-frequency carrier signal, a differentiator (4) disposed downstream of the filter (3) and adapted to amplify the sides of the output signal of the filter (3), and a comparator (5) disposed downstream of the differentiator and used to compare the output signal of the differentiator (4) with at least one predetermined threshold value (VHIGH, VLOW).

    Abstract translation: 本发明涉及一种解调器，用于解调由交替的低和高电平电压，特别之间的幅度以非接触的数据传输使用从卡读/写器向智能卡调制的信号。 在根据发明解调器具有（2），用于降低输入信号的动态范围（1），（2）的过滤器（3）用于过滤高频载波信号，一个过滤器的下游（3）连接的下游的微分器（4），用于动态压缩电路中的一个的动态范围压缩电路 在所述过滤器（3）和所述微分器比较器（5）的用于微分器（4）的输出信号与至少一个预先规定的阈值（VHIGH，VLOW）比较下游的输出信号的边缘的加固。

    VOLTAGE SUPPLY CIRCUIT AND METHOD FOR GENERATING A SUPPLY VOLTAGE
    3.
    发明申请
    VOLTAGE SUPPLY CIRCUIT AND METHOD FOR GENERATING A SUPPLY VOLTAGE 审中-公开
    电路电源和方法产生电压

    公开(公告)号：WO2004064232A2

    公开(公告)日：2004-07-29

    申请号：PCT/EP2004000173

    申请日：2004-01-13

    Applicant: INFINEON TECHNOLOGIES AG ,  BAGLIN THOMAS JEAN LUDOVIC ,  MISSONI ALBERT ,  NEBEL GERHARD

    Inventor： BAGLIN THOMAS JEAN LUDOVIC ,  MISSONI ALBERT ,  NEBEL GERHARD

    IPC: G05F1/46 ,  H02M

    CPC classification number: G05F1/46 ,  Y10T307/50

    Abstract: The invention relates to a voltage supply circuit comprising a first supply voltage input (IN1) that is connected to a first comparator (CMP1) and a first voltage regulator (REG1), the former (CMP1) controlling the latter (REG1). The circuit is also equipped with a second supply voltage input (IN2) that is connected to a second comparator (CMP2) and a second voltage regulator (REG2), the former (CMP2) controlling the latter (REG2). In addition, the circuit is provided with a supply voltage output (O) that is connected to the outputs of the two voltage regulators (REG1, REG2) and to the two comparators (CMP1, CMP2) in a feedback coupling.

    Abstract translation: 用于电源本发明的电路包括：第一电源电压输入端（IN1）到第一比较器（CMP1）和第一电压调节器（REG1）连接，其中，所述第一比较器（CMP1）的第一电压调节器（REG1）对照。 仍然是一个第二供电电压输入（IN2）被提供，其被连接到第二比较器（CMP2）和第二电压调节器（REG2），其中，所述第二比较器（CMP2）第二电压调节器（REG2）对照。 最后，连接到两个电压调节器的输出端和两个比较器（CMP1，CMP2）的电源电压输出（O）vorgese-母鸡，其被连接（REG1，REG2）被反馈。

    4.
    发明专利
    未知

    公开(公告)号：ES2216588T3

    公开(公告)日：2004-10-16

    申请号：ES99955954

    申请日：1999-11-03

    Applicant: INFINEON TECHNOLOGIES AG

    Inventor： NEBEL GERHARD ,  GINGERICH VOLKER ,  BLUM ANDREAS ,  WEDER UWE ,  EICHNER DIERK ,  REINER ROBERT

    IPC: H03D1/00 ,  G06K7/00 ,  G06K19/07 ,  H04L25/06 ,  H04L27/04 ,  H04L27/06

    Abstract: A method for demodulating a voltage which has been ASK modulated by changing the amplitude between a low level and a high level, in particular for use during contactless data transmission from a card reader/writer to a smart card, is described. The method is distinguished, in that, in an initialization phase, a first mean value is produced from the high voltage level and a stored partial voltage derived therefrom in order to detect a change to a low voltage level. The change to the low voltage level represents a start value and is detected by a subsequent comparison of the modulated voltage with the first mean value. In a subsequent demodulation phase, a second mean value is produced from the detected low voltage level and the high voltage level in order to demodulate the modulated voltage by comparing the modulated voltage with the second mean value.

    5.
    发明专利
    未知

    公开(公告)号：DE10134102A1

    公开(公告)日：2003-01-30

    申请号：DE10134102

    申请日：2001-07-13

    Applicant: INFINEON TECHNOLOGIES AG

    Inventor： NEBEL GERHARD ,  REINER ROBERT ,  SCHROEDER WERNER

    IPC: H04L27/06 ,  G06K19/07

    Abstract: The invention relates to a demodulator for demodulating a voltage that is modulated by a modification of the amplitude between a low and a high level, especially for use in contact-less data transmission from a card write/read device to a chip card. The inventive demodulator is provided with a dynamic range circuit (2) that reduces the dynamic response of the input signal (1), a filter (3) disposed downstream of said dynamic range circuit (2) and adapted to filter a high-frequency carrier signal, a differentiator (4) disposed downstream of the filter (3) and adapted to amplify the sides of the output signal of the filter (3), and a comparator (5) disposed downstream of the differentiator and used to compare the output signal of the differentiator (4) with at least one predetermined threshold value (VHIGH, VLOW).

    10.
    发明专利
    未知

    公开(公告)号：DE102006020561B3

    公开(公告)日：2007-11-29

    申请号：DE102006020561

    申请日：2006-05-03

    Applicant: INFINEON TECHNOLOGIES AG

    Inventor： ZIMEK BERND ,  LEUTGEB THOMAS ,  SCHEIBLHOFER DIETMAR ,  NEBEL GERHARD ,  RABE DIRK

    IPC: G06F1/26 ,  G05F1/10

    Abstract: A current-supply circuit includes a regulation transistor. The regulation transistor is formed to regulate, based on a first supply voltage present on a first supply-voltage feed line, a second supply voltage present on a second supply-voltage feed line. The regulation transistor provides a supply current to the second supply-voltage feed line. The voltage-supply circuit further includes an operating-point determiner, which is formed to determine, based on information that is a measure for the supply current, whether the regulation transistor is at a low operating point at which the supply current is below a determined current. The voltage-supply circuit further includes a preventer that is formed to prevent, starting from the low operating point, a rise of the supply current by at least a predetermined current amount from occurring within a predetermined period.

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