Communications: electrical – Continuously variable indicating – With meter reading
Patent
1993-11-04
1996-03-12
Horabik, Michael
Communications: electrical
Continuously variable indicating
With meter reading
34082531, G08C 1900
Patent
active
054990220
ABSTRACT:
A remote control system for locking and unlocking a passenger space in a motor vehicle has an on-board unit that includes an emitter of signals S.sub.E of a first type and receiver of signals S.sub.P of a second type. There also is a portable device that has a receiver of first type signals S.sub.E and an emitter of second type signals S.sub.P. The apparatus also detects that the portable device has been forgotten inside the passenger space by determining the relative position of the portable device in relation to the interior of the passenger space. The apparatus for determining the position of the portable device in relation to the interior of the passenger space is integrated into the portable device with the portable device emitter of the second type signal S.sub.pforgotten in the event of detection of the portable device having been forgotten inside the passenger space.
REFERENCES:
patent: 5113182 (1992-05-01), Suman et al.
patent: 5157389 (1992-10-01), Kourozu
IEEE Transaction on Industrial Elecronics and Central Instrumentation, vol. 35, No. 2, May 1, 1988, New York U.S. pp. 208-216 Motoki Hirano et al., "Keyless Entry System with Radio Card Transponder".
Horabik Michael
Valeo Electronique
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