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CARD DETECTION DEVICE HAVING A MAGNETIC FIELD MONITOR, SYSTEM INCLUDING THE DEVICE, AND METHOD OF OPERATING THE DEVICE

  • US 20150270876A1
  • Filed: 03/17/2015
  • Published: 09/24/2015
  • Est. Priority Date: 03/18/2014
  • Status: Active Grant
First Claim
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1. A detection device, comprising:

  • a transmitter supplying an induced current to an antenna and adjusting a strength of an induced voltage generated in the antenna by adjusting the induced current; and

    a detector monitoring the strength of the induced voltage of the antenna and generating a control signal for controlling the induced current to the antenna based on the monitored strength of the induced voltage of the antenna.

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