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WIRELESS TAG READER/WRITER DEVICE AND SIGNAL TRANSMISSION/RECEPTION METHOD THEREOF

  • US 20090002168A1
  • Filed: 03/05/2008
  • Published: 01/01/2009
  • Est. Priority Date: 06/26/2007
  • Status: Abandoned Application
First Claim
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1. A wireless tag reader/writer device that sends question signals to a plurality of wireless tags at once and receives response signals sent from the wireless tags, the device comprising:

  • sending transmission signals for a plurality of times by changing a transmission power of the question signals to be sent to the plurality of wireless tags, and acquiring the response signals from the wireless tags each time the transmission power is changed.

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