System for measuring a distance between two points and...

Details System for measuring a distance between two points and... System for measuring a distance between two points and...

2006-11-22

2010-12-28

La, Anh V (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Of relative distance from an obstacle

C340S539210, C340S572100, C340S686600, C342S070000

Reexamination Certificate

active

07859390

ABSTRACT:
A distance measuring system and method is disclosed having a transponder and an interrogation unit in communication with each other wherein, based upon a calculated distance between the transponder and the interrogation unit, a warning signal is provided if the calculated distance is within a predetermined range.

REFERENCES:
patent: 4961575 (1990-10-01), Perry
patent: 6614387 (2003-09-01), Deadman
patent: 7375627 (2008-05-01), Johnson et al.
patent: 2006/0176178 (2006-08-01), Everest et al.

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