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Sonar scanner

  • US 20030039171A1
  • Filed: 08/02/2001
  • Published: 02/27/2003
  • Est. Priority Date: 04/04/2000
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transmitting a sound wave comprised of a first portion and a second portion;

    obtaining a characteristic of the second portion;

    storing the characteristic; and

    using the characteristic to detect an echo of another sound wave.

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