Location confirmation system and information transmitting...

Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment

Reexamination Certificate

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Details

C701S207000, C342S357490

Reexamination Certificate

active

06957144

ABSTRACT:
In a location confirmation system, one navigation terminal connects a line to an information center to transmit timing information, and the information center identifies other navigation terminals for exchanging information indicating current locations to transmit the timing information to them. Thereafter, other navigation terminals having received the timing information and one navigation terminal transmit and receive the information indicating each current location at almost equal timing in accordance with the timing information.

REFERENCES:
patent: 6181683 (2001-01-01), Chevillat et al.
patent: 6587780 (2003-07-01), Trovato
patent: 6650252 (2003-11-01), Miller, Jr.
patent: 6650995 (2003-11-01), Bullock
patent: 196 51 143 (1998-06-01), None

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