Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 6, 2008
Patent Application Number
11085832
Date Filed
March 21, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
Detecting an object using sound waves includes outputting a sound wave from a transducer, receiving an echo after outputting the sound wave, obtaining a threshold value based on the echo and plural other echoes that are within a predetermined range of the echo, and determining if the echo is a result of the sound wave based on the threshold value.
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