Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1995-05-04
1997-01-28
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
364449, G01S 302
Patent
active
055981674
ABSTRACT:
For locating an earthbound and freely movable vehicle, first interfacing to an external coordinate system for determining an actual vehicle position is effected. This position is recurrently and wireless transmitted to a remote station. For restricting the number of transmissions in the vehicle a discrete internal change of status is detected. Upon detection the transmitting is effected.
REFERENCES:
patent: 4943925 (1990-06-01), Moroto et al.
patent: 4970652 (1990-11-01), Nagashima
patent: 5223844 (1993-06-01), Mansell et al.
patent: 5353023 (1994-10-01), Mitsugi
patent: 5374933 (1994-12-01), Kao
patent: 5450343 (1995-09-01), Yurimoto
Phan Dao L.
Schaier Arthur G.
Tarcza Thomas H.
U.S. Philips Corporation
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