Determining RFID tag location
    61.
    发明申请
    Determining RFID tag location 审中-公开
    确定RFID标签位置

    公开(公告)号:US20070073513A1

    公开(公告)日:2007-03-29

    申请号:US11239715

    申请日:2005-09-29

    CPC分类号: G01S5/06 G01S13/751

    摘要: In some embodiments, a radio frequency identification (RFID) reader with multiple antennas may determine the location of an RFID tag relative to the reader's antennas, by using a difference-in-time-of-arrival technique to triangulate on the RFID tag based on the difference in distances between the tag and each antenna. A given point in the signal from the RFID tag may provide a narrow point in time from which to make the calculations, while a common clock to the multiple receive paths may permit making accurate measurements of the difference in time of reception of that point at the different antennas. In some embodiments, movement of the RFID tag may be determined by calculating a series of locations over time.

    摘要翻译: 在一些实施例中,具有多个天线的射频识别(RFID)读取器可以通过使用到达时间差技术来确定RFID标签相对于读取器天线的位置,以便基于RFID标签对基于 标签与每个天线之间的距离差异。 来自RFID标签的信号中的给定点可以提供从其进行计算的较短的时间点,而对于多个接收路径的公共时钟可以允许精确地测量在该接收点处的该点的接收时间差 不同的天线。 在一些实施例中,RFID标签的移动可以通过随时间计算一系列位置来确定。

    Radio frequency identification tags capable of embedding receiver signal strength indications
    62.
    发明申请
    Radio frequency identification tags capable of embedding receiver signal strength indications 有权
    能够嵌入接收机信号强度指示的射频识别标签

    公开(公告)号:US20070013517A1

    公开(公告)日:2007-01-18

    申请号:US11180929

    申请日:2005-07-12

    IPC分类号: G08B13/14

    摘要: An embodiment of the present invention provides an apparatus, comprising an RF ID tag capable of reporting receiver signal strength indication, wherein the receiver signal strength may be indicated by an a RSSI byte included with an electronic product code (EPC) data packet. The EPC data packet may be in the standard SGTIN-64 EPC data format. Further, the RF ID tag capable of reporting signal strength may enable power control or beam steering.

    摘要翻译: 本发明的一个实施例提供了一种装置,包括能够报告接收机信号强度指示的RF ID标签,其中接收机信号强度可以由包括在电子产品代码(EPC)数据分组中的RSSI字节来指示。 EPC数据包可以是标准的SGTIN-64 EPC数据格式。 此外,能够报告信号强度的RF ID标签可以实现功率控制或波束转向。

    RFID tag with separate transmit and receive clocks and related method
    63.
    发明申请
    RFID tag with separate transmit and receive clocks and related method 审中-公开
    RFID标签具有单独的发送和接收时钟及相关方法

    公开(公告)号:US20060273882A1

    公开(公告)日:2006-12-07

    申请号:US11142424

    申请日:2005-06-01

    IPC分类号: H04Q5/22

    CPC分类号: G06K19/0723

    摘要: An RFID tag includes separate transmit and receive clocks. In at least one embodiment, the transmit clock frequency is adjusted based on an amount of power available to transmit a response signal to a reader.

    摘要翻译: RFID标签包括单独的发送和接收时钟。 在至少一个实施例中,基于可用于向读取器发送响应信号的功率量来调整发射时钟频率。

    Transceiver with receive path overload protection and method
    64.
    发明申请
    Transceiver with receive path overload protection and method 失效
    收发器具有接收路径过载保护和方法

    公开(公告)号:US20060223451A1

    公开(公告)日:2006-10-05

    申请号:US11096195

    申请日:2005-03-31

    IPC分类号: H04B1/38

    摘要: A transceiver includes a detuning circuit to generate an impedance mismatch in a receive signal path in response to a control signal provided by loop-control circuitry. The loop-control circuitry generates the control signal based on a comparison of detected peak signal levels in the receive signal path. In this way, high-power input signal levels in the receive signal path may be reflected back to an input of the receiver due to the impedance mismatch.

    摘要翻译: 收发器包括失谐电路,以响应于由环路控制电路提供的控制信号而在接收信号路径中产生阻抗失配。 环路控制电路基于接收信号路径中检测到的峰值信号电平的比较来产生控制信号。 以这种方式,由于阻抗不匹配,接收信号路径中的高功率输入信号电平可被反射回接收机的输入端。

    Tamper detection with RFID tag
    65.
    发明申请
    Tamper detection with RFID tag 审中-公开
    用RFID标签进行篡改检测

    公开(公告)号:US20060214789A1

    公开(公告)日:2006-09-28

    申请号:US11089916

    申请日:2005-03-24

    IPC分类号: G08B13/08

    摘要: A sensor may be used to detect a previous or current change of state, and the change may be reported by a radio frequency identification (RFID) tag. In some embodiments, the change may represent a broken security seal, which in turn may affect an electrical connection that can be sensed by the RFID tag during operation of the RFID tag.

    摘要翻译: 可以使用传感器来检测先前或当前的状态变化,并且可以通过射频识别(RFID)标签来报告变化。 在一些实施例中,改变可以表示破损的安全密封件,这又可能影响在RFID标签的操作期间可由RFID标签感测的电连接。

    Active multiplexer for a multiple antenna transceiver
    67.
    发明申请
    Active multiplexer for a multiple antenna transceiver 审中-公开
    多天线收发器的有源多路复用器

    公开(公告)号:US20060125602A1

    公开(公告)日:2006-06-15

    申请号:US11007898

    申请日:2004-12-09

    IPC分类号: G08B13/14

    CPC分类号: G06K7/0008

    摘要: A single antenna may be powered to illuminate or transmit to a receiver such as an RFID tag. That tag may then provide a responsive signal to a plurality of antennas, each of which are active. The signals from those antennas may be analyzed to determine which signal has the highest quality. This may be used to select a particular signal for future analysis or to select a particular antenna for use as both a transmission and reception antenna for future operations. For example, the antenna which provides the strongest signal may be utilized to further illuminate a given RFID tag.

    摘要翻译: 单个天线可以被供电以照亮或发射到诸如RFID标签的接收器。 然后,该标签可以向多个天线提供响应信号,每个天线都是活动的。 可以分析来自那些天线的信号以确定哪个信号具有最高的质量。 这可以用于选择特定的信号用于将来的分析,或者选择特定的天线用作将来操作的发射和接收天线。 例如,提供最强信号的天线可以用于进一步照亮给定的RFID标签。

    Apparatus for electrical and optical interconnection
    69.
    发明申请
    Apparatus for electrical and optical interconnection 有权
    用于电气和光学互连的设备

    公开(公告)号:US20060002663A1

    公开(公告)日:2006-01-05

    申请号:US10882906

    申请日:2004-06-30

    IPC分类号: G02B6/36

    摘要: An optical-electronic interface may include a circuit substrate, an electrical component mounted on the substrate, an optical component mounted off the substrate, and a flexible interconnect having a first end electrically connected to the optical component and second end electrically connected proximate to the optical component. The electrical component may include electrical leads and the circuit substrate may include electrically conductive traces connected to the electrical leads. The second end of the flexible interconnect may be electrically connected directly to the electrical leads of the electrical component or directly to the electrically conductive traces at a position located proximate to the electrical component. A flexible optoelectronic interconnect may include a first and second dielectric layer, a signal layer with a signal trace disposed between the dielectric layers, ground plane layers on the first and second dielectric layers and a plurality of vias electrically coupling the first and second ground layers.

    摘要翻译: 光学电子接口可以包括电路基板,安装在基板上的电气部件,安装在基板上的光学部件,以及柔性互连件,其具有电连接到光学部件的第一端,并且第二端电连接到光学部件 零件。 电气部件可以包括电引线,并且电路基板可以包括连接到电引线的导电迹线。 柔性互连的第二端可以直接电连接到电气部件的电引线,或者直接连接到位于电气部件附近的位置处的导电迹线。 灵活的光电互连可以包括第一和第二电介质层,信号层,信号线设置在电介质层之间,第一和第二电介质层上的接地平面层以及电耦合第一和第二接地层的多个通孔。