Method and system for enhancing accuracy in ultrasonic alignment
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United States of America Patent
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Jan 17, 2012
Grant Date -
Aug 12, 2010
app pub date -
Apr 20, 2010
filing date -
Nov 29, 2005
priority date (Note) -
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Abstract
A method for short range alignment using ultrasonic sensing is provided. The method includes shaping an ultrasonic pulse on a first device to produce a pulse shaped signal and transmitting the pulse shaped signal from the first device to a second device, receiving the pulse shaped signal and determining an arrival time of the pulse shaped, identifying a relative phase of the pulse shaped signal with respect to a previously received pulse shaped signal, identifying a pointing location of the first device from the arrival time and the relative phase, determining positional information of the pointing location of the first device, and reporting an alignment of three or more points in three-dimensional space. Other embodiments are disclosed.
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