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    • 9. 发明申请
    • RFID SYSTEM WITH TIME SLOT INTERLEAVING
    • RFID系统与时隙交互
    • US20120280796A1
    • 2012-11-08
    • US13464542
    • 2012-05-04
    • Kelly GravelleMichael MelvilleKarl Kelsey
    • Kelly GravelleMichael MelvilleKarl Kelsey
    • G06K7/01
    • G08G1/017G06K7/10019G06K7/10029G06K7/10039G06K7/10356G06K7/10366
    • A method for interleaving time slots in a multi-antenna system for communication with RFID tags is disclosed. An example is shown for an eight antenna system. A first four antennas arranged side-by-side are sequentially energized to interrogate RFID transponders. A second set of four antennas arranged side-by-side, the first of which is adjacent to the last of the first set of antennas. A four-antenna sequence is performed for the first four antennas and a second four antenna sequence is performed for the second set of antennas. The first and second four antenna sequences are offset by only a marginal amount, sufficient to ensure that a transponder signal received four antennas away from an active antenna is not acknowledged because the receive window for the non-active antenna is delayed.
    • 公开了一种用于在用于与RFID标签通信的多天线系统中交织时隙的方法。 示出了用于八天线系统的示例。 并排布置的前四个天线被依次通电以询问RFID应答器。 并排布置的第二组四个天线,其中第一组与第一组天线的最后一个相邻。 对于前四个天线执行四天线序列,并且对于第二组天线执行第二四个天线序列。 第一和第二四个天线序列仅被偏移量足以确保远离有源天线的四个天线接收到的应答器信号不被确认,因为非有源天线的接收窗口被延迟。
    • 10. 发明授权
    • RFID tag with integrated disabling and method of use
    • RFID标签与综合禁用和使用方法
    • US08228199B2
    • 2012-07-24
    • US12754003
    • 2010-04-05
    • Scott NoakesKelly Gravelle
    • Scott NoakesKelly Gravelle
    • G08B13/14
    • G06K19/07327
    • Systems, tags and methods for disabling transponders used in electronic toll collection or other RFID systems, wherein the transponders include an antenna and RFID circuitry. The transponders can be selectively disabled by positioning (e.g., pivotably moving) a disabling member having a metallic portion to an operative position over the antenna of the RFID system, whereupon the metallic portion is coupled to the antenna in such a manner as to disable the RFID circuitry so long as the disabling member is at the operative position. The RFID circuitry is arranged to be automatically enabled upon removal of the disabling member from the operative position (e.g., pivoting the disabling member back to an inoperative position).
    • 用于禁用在电子收费系统或其他RFID系统中使用的应答器的系统,标签和方法,其中应答器包括天线和RFID电路。 可以通过将具有金属部分的禁用构件定位(例如,可枢转地移动)到RFID系统的天线上方的操作位置来选择性地禁用应答器,于是金属部分以这样的方式被耦合到天线, RFID电路,只要禁用构件处于操作位置即可。 RFID电路被布置成在从禁用部件移除操作位置(例如将禁用部件转回到非工作位置)时自动启用。