会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明申请
    • Identification tag utilizing charge pumps for voltage supply generation and data recovery
    • 识别标签利用电荷泵进行电压发生和数据恢复
    • US20020149482A1
    • 2002-10-17
    • US10072985
    • 2002-02-12
    • Matrics, Inc.
    • Wayne E. ShanksWilliam R. BandyMichael R. ArnesonKevin J. Powell
    • G08B013/14
    • G06K19/07749G06K7/0008G06K7/10039G06K7/10069G06K7/10108G06K7/10356G06K17/00G06K19/0713G06K19/0723G06K19/07767G08B13/2485G11C5/142H04L7/0331
    • An identification (ID) tag includes a substrate having an input capable of receiving a high frequency signal. For instance, the high frequency signal can be a radio frequency (RF) signal that is generated as part of a radio frequency (RF) ID system. A first charge pump is coupled to the input and is configured to convert the high frequency signal to a substantially direct current (DC) voltage. A data recovery circuit is coupled to the input and is capable of recovering data from the high frequency signal. A back scatter switch is coupled to the input and is capable of modifying an impedance of the input, responsive to a control signal. A state machine is disposed on the substrate and is responsive to the data recovered by the second charge pump, where the state machine is capable of generating the control signal for the back scatter switch in response to the data. The DC voltage from the first charge pump is capable of providing a voltage supply for at least one of the data recovery circuit, the back scatter switch, and the state machine. The data recovery circuit includes a second charge pump that is capable of operating on the high frequency signal simultaneously with the first charge pump. In other words, the first charge pump can generate the supply voltage for the ID tag from the high frequency signal, while the second charge pump simultaneously retrieves the data from the high frequency signal. The first charge pump also includes a means for limiting the amplitude of the DC voltage by reducing the charge pump efficiency, once a threshold voltage is reached.
    • 识别(ID)标签包括具有能够接收高频信号的输入的基板。 例如,高频信号可以是作为射频(RF)ID系统的一部分而生成的射频(RF)信号。 第一电荷泵耦合到输入端并被配置为将高频信号转换成基本上直流(DC)的电压。 数据恢复电路耦合到输入端并且能够从高频信号中恢复数据。 背散射开关耦合到输入端,并且能够响应于控制信号来修改输入的阻抗。 状态机设置在基板上并且响应于由第二电荷泵恢复的数据,其中状态机能够响应于数据而产生用于背散射开关的控制信号。 来自第一电荷泵的DC电压能够为数据恢复电路,后向散射开关和状态机中的至少一个提供电压源。 数据恢复电路包括能够与第一电荷泵同时对高频信号进行操作的第二电荷泵。 换句话说,第一电荷泵可以从高频信号产生ID标签的电源电压,而第二电荷泵同时从高频信号中检索数据。 第一电荷泵还包括一旦达到阈值电压,则通过降低电荷泵效率来限制直流电压的振幅的装置。