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Near field wireless transmission/reception method and apparatus

  • US 9,413,432 B2
  • Filed: 08/16/2013
  • Issued: 08/09/2016
  • Est. Priority Date: 09/24/2012
  • Status: Active Grant
First Claim
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1. A data communication method of a near field wireless communication apparatus using magnetic coupling, the method comprising:

  • generating, by a pulse generator, a first positive pulse signal corresponding to transmission digital data by outputting a positive pulse when the transmission digital data is “

    1” and

    not outputting a pulse when the transmission digital data is “

    0”

    ;

    driving a data transmission coupler only for a period in which the first positive pulse signal is the positive pulse, thereby transmitting the transmission digital data;

    generating a positive-to-negative pulse signal in which a positive pulse and a negative pulse intersect, in response to signal reception in a data reception coupler;

    comparing a reference value with the positive-to-negative pulse signal to change the positive-to-negative pulse signal to a second positive pulse signal; and

    demodulating the second positive pulse signal to reception digital data,wherein demodulating the second positive pulse signal to the reception digital data comprises;

    toggling, by a first delay flip-flop, the second positive pulse signal to generate a toggling signal,sampling, by a second delay flip-flop, the toggling signal to generate a sampling signal,delaying, by a third delay flip-flop, the sampling signal to generate a delay signal, andconducting an XOR operation for the sampling signal and the delay signal to output the reception digital data.

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