Wireless communication system
    1.
    发明授权
    Wireless communication system 失效
    无线通信系统

    公开(公告)号:US07408456B2

    公开(公告)日:2008-08-05

    申请号:US10489720

    申请日:2002-09-06

    IPC分类号: G08B23/00

    摘要: An RFID tag (200) and similar control/sensing unit (300) for a communications system are described. The control/sensing unit has a control element (301) having one or more states, and include an antenna (207) as well as an electrical circuit (201-206) generating a pulse control signal for controlling transmission from the antenna and varying a parameter of the pulse control signal in dependence on the state of the control element (301). Also disclosed is a receiving communication unit in the form of a base unit or system controller for such a communications system, the unit including a receiver (100) for receiving a pulsed RF signal and an electrical circuit (105-106) for detecting a parameter of the pulsed RF signal. An output circuit (107) then produces an output control signal dependent on the detected parameter of the pulsed RF signal.

    摘要翻译: 描述了用于通信系统的RFID标签(200)和类似的控制/感测单元(300)。 控制/感测单元具有具有一个或多个状态的控制元件(301),并且包括天线(207)以及产生用于控制来自天线的传输的脉冲控制信号的电路(201- 206),并且改变 根据控制元件(301)的状态,脉冲控制信号的参数。 还公开了一种用于这种通信系统的基本单元或系统控制器形式的接收通信单元,该单元包括用于接收脉冲RF信号的接收器(100)和用于检测参数的电路(105-106) 的脉冲RF信号。 然后,输出电路(107)根据检测到的脉冲RF信号的参数产生输出控制信号。