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    • 1. 发明授权
    • Integrated receiving/backscattering arrangement for contactless data transmission
    • 用于非接触式数据传输的集成接收/后向散射装置
    • US06870461B2
    • 2005-03-22
    • US10308248
    • 2002-12-02
    • Martin FischerUlrich FriedrichUdo KarthausDirk Ziebertz
    • Martin FischerUlrich FriedrichUdo KarthausDirk Ziebertz
    • G01S13/75G06K19/07G06K19/077H04Q5/22
    • G06K19/0716G01S13/756G01S13/758G06K19/0723G06K19/07749G06K19/07764
    • A receiving/backscattering arrangement for carrying out a contactless data transmission includes an integrated circuit having two antenna contacts, a series arrangement of three high quality capacitances connected between the two antenna contacts, whereby the middle capacitance is an MOS varactor, a controllable variable voltage source connected across the MOS varactor, and a control unit that controls the voltage source. The receiving/backscattering arrangement is especially a passive transponder with a rectifier connected between the antenna contacts, or a semi-passive transponder including a battery or solar cell, to provide the required supply voltage for the circuit. The arrangement achieves a large communication range, for receiving and modulating an interrogation signal, and backscattering the modulated response signal with a high efficiency and low losses. The integrated circuit structure is compact and economical.
    • 用于执行非接触数据传输的接收/后向散射装置包括具有两个天线触点的集成电路,连接在两个天线触点之间的三个高质量电容的串联布置,由此中间电容是MOS可变电抗器,可控可变电压源 连接在MOS变容二极管上,控制单元控制电压源。 接收/反向散射装置特别是一种无源应答器,其中连接有天线触点之间的整流器,或者包括电池或太阳能电池的半无源应答器,以为电路提供所需的电源电压。 该布置实现了大的通信范围,用于接收和调制询问信号,并且以高效率和低损耗来反向散射调制的响应信号。 集成电路结构紧凑,经济。
    • 3. 发明申请
    • Circuit arrangement and method for increasing the functional range of a transponder
    • 用于增加应答器的功能范围的电路布置和方法
    • US20050122651A1
    • 2005-06-09
    • US11002852
    • 2004-11-30
    • Martin FischerVolkhard FlassnoeckerUlrich FriedrichDirk Ziebertz
    • Martin FischerVolkhard FlassnoeckerUlrich FriedrichDirk Ziebertz
    • G06K19/07G06K19/073H02H3/24
    • G06K19/0701G06K19/0715G06K19/0723G06K19/073
    • A transponder receives its operating energy from an external source such as a radio signal or a battery. Such transponders are used for example in a vehicle or in a remote sensor. The response range of the transponder is increased by converting the received energy into an operating voltage which in turn is used to generate a function voltage required for performing a current function sequence. The generated function voltage is checked to determine at least one characteristic of the generated function voltage. The determined function voltage characteristic, for example a voltage value directly representing the function voltage, is then used to acknowledge or reject a result of performing the function sequence. Thus, the time duration for performing any current function sequence is flexibly adapted to the current requirements of that function sequence, whereby the power consumption of the transponder is optimally reduced and the response range respectively increased.
    • 应答器从诸如无线电信号或电池的外部源接收其工作能量。 这种应答器例如用于车辆或远程传感器中。 通过将接收到的能量转换成工作电压来增加应答器的响应范围,该操作电压又被用于产生执行当前功能序列所需的功能电压。 检查产生的功能电压以确定产生的功能电压的至少一个特性。 确定的功能电压特性,例如直接表示功能电压的电压值,然后用于确认或拒绝执行功能序列的结果。 因此,执行任何当前功能序列的持续时间灵活地适应于该功能序列的当前要求,由此应答器的功耗被最佳地降低并且响应范围分别增加。
    • 4. 发明授权
    • Method, transponder, and system for secure data exchange
    • 方法,应答器和用于安全数据交换的系统
    • US08138889B2
    • 2012-03-20
    • US11819132
    • 2007-06-25
    • Martin FischerUlrich FriedrichJens MasuchMichael PangelsDirk Ziebertz
    • Martin FischerUlrich FriedrichJens MasuchMichael PangelsDirk Ziebertz
    • H04Q5/22
    • H04L9/3226H04L2209/805
    • A method for data exchange is provided, whereby a first code is generated by a transponder, which is transmitted to a base station, a first transmission information is generated by the base station by encoding a base station code with a first identification and the first random number code, the first transmission information is transmitted to the transponder and the base station code is extracted by the transponder, a second code is generated by the transponder, which is transmitted to the base station upon an associated request from the base station, whereby before a transmission to the base station the second code is encoded with the extracted base station code, a second encoded transmission information comprising a second identification is generated by the base station with use of the second code and transmitted to the transponder, and at least one memory region of the transponder is released for read and/or write access after the second identification was verified as valid. The invention relates further to a transponder and to a system for secure data exchange.
    • 提供了一种用于数据交换的方法,其中第一代码由发送到基站的应答器生成,基站通过对具有第一标识的基站代码进行编码来生成第一传输信息,并且第一随机 数字代码,将第一传输信息发送到应答器,并且基站代码由应答器提取,第二代码由应答器产生,该应答器根据来自基站的相关请求发送到基站,由此在 利用所提取的基站代码对第二代码进行编码的传输到基站,由基站使用第二代码生成包括第二标识的第二编码的传输信息并将其发送到应答器,以及至少一个存储器 在第二次识别被验证为有效之后,应答器的区域被释放用于读取和/或写入访问。 本发明进一步涉及应答器和用于安全数据交换的系统。