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METHOD AND APPARATUS FOR COMPUTER COMMUNICATION USING AUDIO SIGNALS

  • US 20090315687A1
  • Filed: 08/18/2009
  • Published: 12/24/2009
  • Est. Priority Date: 08/29/2003
  • Status: Active Grant
First Claim
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1. An alert system, comprising:

  • a siren which acoustically transmits encoded digital information when activated, the siren being disposed at an arbitrary location; and

    the digital information being received by one or more distributed computer devices within an audible range of the siren to determine a message provided in the encoded digital information.

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