Method of increasing the capacity and addressing rate of an ultrasonic location system
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United States of America Patent
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-
Nov 13, 2001
Grant Date -
N/A
app pub date -
Dec 30, 1999
filing date -
Jan 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ultrasonic location system for indoor environments, enabling the determination with high accuracy of the positions and orientations of objects to be tracked, wherein transmitting units (20, 22, 24) on the objects to be tracked transmit encoded ultrasonic pulses which are detected by receiver units (12 to 18) located by known positions around a room, and the receiver units are adapted to detect times-of-flight of the ultrasonic pulses in conjunction with decoding of the pulses to identify which time-of-flight applies to each transmitting unit.
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