Time delay measurement
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United States of America Patent
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Oct 17, 2006
Grant Date -
Nov 25, 2004
app pub date -
Mar 26, 2004
filing date -
Apr 3, 2003
priority date (Note) -
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Abstract
A time measurement system for measuring the delay between first and second signals comprises means for detecting the times of upcrossings when the first signal crosses a predetermined level (preferably substantially different from the average level) with a positive slope and the times of downcrossings when the first signal crosses the predetermined level with a negative slope. These events are transmitted to a remote device receiving the second signal, which uses the events to define respective staggered segments of the second signal, to sum said segments and to detect a predetermined feature in said sum, the position of said feature representing the delay between the first and second signals.
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