Sonar scanner

  • US 7,369,460 B2
  • Filed: 03/21/2005
  • Issued: 05/06/2008
  • Est. Priority Date: 08/03/2000
  • Status: Active Grant
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First Claim
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1. A method comprising:

  • transmitting a sound wave comprised of a first portion and a second portion, the first portion comprising a pulse signal and the second portion comprising a ring-down signal;

    obtaining a characteristic of the second portion;

    storing the characteristic;

    using the characteristic to detect an echo of another sound wave; and

    repeating transmitting, obtaining, storing and using periodically for different sound waves and corresponding first and second portions.

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