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System and method for wirelessly transmitting and receiving digital data using acoustical tones

  • US 20040081078A1
  • Filed: 06/19/2003
  • Published: 04/29/2004
  • Est. Priority Date: 06/21/2002
  • Status: Active Grant
First Claim
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1. A digital data transmitting system using acoustic tones, the system comprising:

  • a) at least one generator generating digital data;

    b) a modulator system, said modulator system modulating DTMF tones with the digital data; and

    c) at least one loudspeaker, the loudspeaker transmitting the modulated tones.

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