RFID tag uncoupling one of its antenna ports and methods
    2.
    发明授权
    RFID tag uncoupling one of its antenna ports and methods 有权
    RFID标签解耦其天线端口之一和方法

    公开(公告)号:US07667589B2

    公开(公告)日:2010-02-23

    申请号:US10891894

    申请日:2004-07-14

    IPC分类号: G08B19/00

    CPC分类号: G06K19/07767 G06K19/07749

    摘要: RFID tags have an on-chip antenna and an off-chip antenna. One of the antennas can become uncoupled if the proper signal is received, while the other antenna may still operate. The uncoupled antenna can be the larger one, for example the off-chip antenna. Then the tag can then be read only by the smaller antenna, which effectively reduces the range of the RFID tag, but without disabling it entirely.

    摘要翻译: RFID标签具有片上天线和片外天线。 如果接收到适当的信号,其中一个天线可能会脱耦,而另一个天线仍然可以工作。 非耦合天线可以是较大的天线,例如片外天线。 那么标签然后可以被较小的天线读取,这有效地减少了RFID标签的范围,但是没有完全禁用它。

    Floating-gate semiconductor structures
    8.
    发明授权
    Floating-gate semiconductor structures 失效
    浮栅半导体结构

    公开(公告)号:US07548460B2

    公开(公告)日:2009-06-16

    申请号:US10915107

    申请日:2004-08-09

    IPC分类号: G11C11/34

    摘要: Hot-electron injection driven by hole impact ionization in the channel-to-drain junction of a p-channel MOSFET provides a new mechanism for writing a floating-gate memory. Various pFET floating-gate structures use a combination of this mechanism and electron tunneling to implement nonvolatile analog memory, nonvolatile digital memory, or on-line learning in silicon. The memory is nonvolatile because the devices use electrically isolated floating gates to store electronic charge. The devices enable on-line learning because the electron injection and tunneling mechanisms that write the memory can occur during normal device operation. The memory updates and learning are bidirectional because the injection and tunneling mechanisms add and remove electrons from the floating gate, respectively. Because the memory updates depend on both the stored memory and the pFETs terminal voltages, and because they are bidirectional, the devices can implement on-line learning functions.

    摘要翻译: 通过p沟道MOSFET的沟道到漏极结中的空穴冲击电离驱动的热电子注入为写入浮栅存储器提供了一种新的机制。 各种pFET浮栅结构使用这种机制和电子隧道的组合来实现非易失性模拟存储器,非易失性数字存储器或在线学习。 存储器是非易失性的,因为器件使用电隔离的浮动门来存储电子电荷。 这些器件允许在线学习,因为写入存储器的电子注入和隧道机制可能在正常的器件操作期间发生。 存储器更新和学习是双向的,因为注入和隧道机制分别从浮动栅极添加和去除电子。 因为存储器更新取决于存储的存储器和pFET端子电压,并且由于它们是双向的,所以器件可以实现在线学习功能。

    Adjusting RFID waveform shape in view of detected RF energy
    10.
    发明授权
    Adjusting RFID waveform shape in view of detected RF energy 有权
    鉴于检测到的RF能量调整RFID波形形状

    公开(公告)号:US07408466B2

    公开(公告)日:2008-08-05

    申请号:US11412170

    申请日:2006-04-25

    IPC分类号: G08B13/14

    CPC分类号: G06K7/0008

    摘要: Systems, software, devices, and methods are described for an RFID reader system to communicate with RFID tags. RF energy encountered in conjunction with using a selected channel is detected and used to adjust a waveform shaping parameter. RF waves can be transmitted from the reader to the RFID tags and RF waves can be backscattered from the RFID tags. At least some of the RF waves transmitted to or backscattered from the RFID tags have a waveform with a shape according to the adjusted waveform shaping parameter.

    摘要翻译: 描述了RFID读取器系统与RFID标签通信的系统,软件,设备和方法。 检测并结合使用所选择的信道遇到的RF能量来调整波形整形参数。 RF波可以从读取器发送到RFID标签,并且RF波可以从RFID标签反向散射。 从RFID标签发射或反向散射的至少一些RF波具有根据经调整的波形整形参数的形状的波形。