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1. 发明申请

US20130203355A1 SHORT-DISTANCE WIRELESS COMMUNICATION DEVICE 审中-公开
标题翻译：短距离无线通信设备
公开(公告)号：US20130203355A1
公开(公告)日：2013-08-08
申请号：US13878290
申请日：2011-10-19
申请人： Masao Ootani
发明人： Masao Ootani
IPC分类号： H04W4/00
CPC分类号： H04W4/80 , G06K19/0726 , H04B5/0031 , H04B5/0081 , Y02D70/00 , Y02D70/42
摘要： Provided is a contactless communication R/W device that has low power consumption and a wide communication area in contactless communication that performs delivery of electronic data with a contactless communication device. The contactless communication R/W device includes an antenna coil, a resonance frequency setting section which sets a resonance frequency, and a coupling degree detecting section which detects a coupling degree corresponding to the resonance frequency of a counterpart antenna coil. The contactless communication R/W device transmits, in a first period before the start of communication, a carrier wave at a first level, and detects the coupling degree while changing the resonance frequency, and then, in a second period, the antenna coil transmits a carrier wave at a second level that is larger than the first level.
摘要翻译：提供了一种无接触通信R / W设备，其具有低功率消耗和非接触通信中的广泛通信区域，其使用非接触式通信设备执行电子数据传送。无接触通信R / W装置包括天线线圈，设定谐振频率的谐振频率设定部，以及检测与对方天线线圈的谐振频率对应的耦合度的耦合度检测部。非接触式通信R / W装置在通信开始前的第一周期中，以第一电平发送载波，并且在改变共振频率的同时检测耦合度，然后在第二时段中，天线线圈传送第二级的载波大于第一级。

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