System and method for concurrently addressing multiple radio frequency identification tags from a single reader
    1.
    发明授权
    System and method for concurrently addressing multiple radio frequency identification tags from a single reader 有权
    用于从单个读取器同时寻址多个射频识别标签的系统和方法

    公开(公告)号:US06952157B1

    公开(公告)日:2005-10-04

    申请号:US10140552

    申请日:2002-05-07

    摘要: A system and method are provided in which each reader may conduct concurrent, yet independent, dialog with multiple tags at the same time using two or more phase channels. The reader itself may communicate with multiple tags via the same antenna, or using multiple antennae where each antenna operates on a separate phase channel. Upon receipt from the reader of an instruction for the tags to randomize, the tags randomly choose and assign a phase channel that will be their time reference for subsequent operation, or the channel can be assigned by the reader. The tags receive reader data encoded in the clock signal from the reader, and select the reader data pertaining to the particular tag based on the selected phase channel.

    摘要翻译: 提供了一种系统和方法,其中每个读取器可以使用两个或更多个相位通道同时进行具有多个标签的并发但独立的对话。 阅读器本身可以通过相同的天线与多个标签进行通信,或者使用多个天线,其中每个天线在单独的相位信道上操作。 从读卡器接收到用于随机化的标签的指令时,标签随机选择并分配作为其后续操作的时间参考的相位通道,或者可以由读取器分配通道。 标签接收来自读取器的时钟信号中编码的读取器数据,并且基于所选择的相位通道选择与特定标签相关的读取器数据。