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COMMUNICATION SYSTEM

  • US 20090146503A1
  • Filed: 03/27/2007
  • Published: 06/11/2009
  • Est. Priority Date: 03/29/2006
  • Status: Active Grant
First Claim
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1. A communication system comprising:

  • an electronic appliance; and

    a portable communication device that communicates with said electronic appliance, whereinsaid electronic appliance includesa first communication unit that communicates with said portable communication device,a direction detector that detects a direction in which said portable communication device exists, andan electromagnetic wave transmitter that converts power supplied from a power supply into electromagnetic waves while transmitting the converted electromagnetic waves in the direction detected by said direction detector,said portable communication device includesa second communication unit that communicates with said electronic appliance,a secondary cell that supplies power to said second communication unit,an electromagnetic wave receiver that receives the electromagnetic waves transmitted by said electromagnetic wave transmitter,a power converter that converts the electromagnetic waves received by said electromagnetic wave receiver into power, anda charger that charges said secondary cell using the power converted by said power converter.

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