Method and apparatus for locating items
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United States of America Patent
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Jun 18, 1996
Issued Date -
N/A
app pub date -
May 20, 1994
filing date -
Jun 15, 1990
priority date (Note) -
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Abstract
A communication system that communicates for locating one or more tags in a time and energy efficient manner. The tags are positioned in a communication region and are located by a locator. The tags are located through organized transmission and reception of signals between the tags and the locator. The locator locates and gives directions to tags from the locator using a radio link and a multi-channel ultrasonic acoustic link. The combination of linkages provides the means to determine the unobstructed bearing and distance between the locator and the tag and resolves multipath reflections.
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