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    • 20. 发明申请
    • Passive Approach Detection System and Method Using a Unidirectional FOB
    • 被动方法检测系统和方法使用单向FOB
    • US20120126943A1
    • 2012-05-24
    • US12950470
    • 2010-11-19
    • William A. BiondoDavid T. ProefkeClark E. McCall
    • William A. BiondoDavid T. ProefkeClark E. McCall
    • G06F7/04
    • G07C9/00182G07C2009/00198
    • A system and method of passive approach detection is provided. The method comprises: transmitting a plurality of data signals corresponding to multiple power levels respectively from a fob device based on motion detected in the fob device; each of the plurality of data signals includes initial bytes encoded with a power level and transmitter identification (ID); receiving one or more of the plurality of data signals at a receiver based on the distance between the fob device and the receiver; filtering out signals at a secondary processor by comparing one or more of the plurality of data signals received to a predetermined list of signals valid for reception; and transmitting a wake-up signal to a primary processor based on the comparison, the wake-up signal enabling the primary processor to transition from a sleep mode to a wake-up mode.
    • 提供了一种被动方式检测的系统和方法。 该方法包括:基于在装置装置中检测到的运动,从装置装置发送对应于多个功率电平的多个数据信号; 多个数据信号中的每一个包括用功率电平和发射机识别(ID)编码的初始字节; 基于所述支架装置和所述接收器之间的距离,在接收器处接收所述多个数据信号中的一个或多个; 通过将所接收的多个数据信号中的一个或多个与有效接收的预定信号列表进行比较来在二级处理器处滤除信号; 以及基于所述比较将唤醒信号发送到主处理器,所述唤醒信号使得所述主处理器能够从睡眠模式转换到唤醒模式。