Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1998-09-02
2000-07-11
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
342463, 34082572, 307 105, G01S 302
Patent
active
060879874
ABSTRACT:
The system allows locating an enabling component of a motor vehicle. The enabling component, provided with a chip, is for example a smart card or an electronic key. The enabling component is addressed with a search signal from a transmitter fixed to the vehicle. The enabling component responds with an indicating signal. The indicating signal may be an audible signal emitted by the enabling component itself and/or the location information can be indicated by an indicator device fixed to the vehicle.
REFERENCES:
patent: 5552641 (1996-09-01), Fischer et al.
patent: 5723911 (1998-03-01), Glehr
patent: 5751073 (1998-05-01), Ross
patent: 5751973 (1998-05-01), Hassett
patent: 5914671 (1999-06-01), Tuttle
Bachhuber Anton
Rohrl Thomas
Greenberg Laurence A.
Lerner Herbert L.
Phan Dao L.
Siemens Aktiengesellschaft
Stemer Werner H.
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