Detection of the presence of a contactless communication element within the range of a terminal
    4.
    发明授权
    Detection of the presence of a contactless communication element within the range of a terminal 有权
    在终端的范围内检测非接触通信元件的存在

    公开(公告)号:US08258970B2

    公开(公告)日:2012-09-04

    申请号:US12508341

    申请日:2009-07-23

    CPC classification number: G06K7/0008 G06K7/10128

    Abstract: A method of detection of the presence of a contactless communication element by a terminal emitting an electromagnetic field, in which an oscillating circuit of the terminal is excited at a frequency which is made variable between two values surrounding a nominal tuning frequency of the oscillating circuit; a signal representative of the load of the oscillating circuit being interpreted to detect that a reference voltage has not been exceeded, which indicates the presence of an element in the field. A presence-detection circuit and a corresponding terminal.

    Abstract translation: 通过发射电磁场的端子检测非接触通信元件的存在的方法,其中终端的振荡电路以围绕振荡电路的标称调谐频率的两个值之间变化的频率被激励; 表示振荡电路的负载的信号被解释为检测到没有超过参考电压,其指示在现场中存在元件。 存在检测电路和相应的终端。

    DETECTION OF THE PRESENCE OF A CONTACTLESS COMMUNICATION ELEMENT WITHIN THE RANGE OF A TERMINAL
    5.
    发明申请
    DETECTION OF THE PRESENCE OF A CONTACTLESS COMMUNICATION ELEMENT WITHIN THE RANGE OF A TERMINAL 有权
    在终端范围内检测无连接通信元件的存在

    公开(公告)号:US20100019885A1

    公开(公告)日:2010-01-28

    申请号:US12508341

    申请日:2009-07-23

    CPC classification number: G06K7/0008 G06K7/10128

    Abstract: A method of detection of the presence of a contactless communication element by a terminal emitting an electromagnetic field, in which an oscillating circuit of the terminal is excited at a frequency which is made variable between two values surrounding a nominal tuning frequency of the oscillating circuit; a signal representative of the load of the oscillating circuit being interpreted to detect that a reference voltage has not been exceeded, which indicates the presence of an element in the field. A presence-detection circuit and a corresponding terminal.

    Abstract translation: 通过发射电磁场的端子检测非接触通信元件的存在的方法,其中终端的振荡电路以围绕振荡电路的标称调谐频率的两个值之间变化的频率被激励; 表示振荡电路的负载的信号被解释为检测到没有超过参考电压,其指示在现场中存在元件。 存在检测电路和相应的终端。

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