Time delay measurement

Details Time delay measurement Time delay measurement

2006-10-17

2006-10-17

Pihulic, Dan (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

By combining or comparing signals

C367S098000

Reexamination Certificate

active

07123547

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.

REFERENCES:
patent: 4972441 (1990-11-01), Roberts et al.
patent: 6115113 (2000-09-01), Flockencier
patent: WO 00/39643 (2000-07-01), None

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