Navigation device, information supplying server and...

Details Navigation device, information supplying server and... Navigation device, information supplying server and...

2007-02-27

2007-02-27

Jeanglaude, Gertrude A. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

Determination of travel data based on the start point and...

C701S025000, C701S207000, C701S208000, C701S211000, C340S990000, C340S995230

Reexamination Certificate

active

10800864

ABSTRACT:
A navigation device in that on each of fixed information having a long update period and update information having a short update period which compose the user service information stored in a navigation device whether or not the user service information is newest, is determined, and the newest information corresponding to at least one of the fixed information and the update information which are determined to be not newest by the determination is acquired from an information supply server, thus, in almost all cases, only the update information is acquired from the information supply server, so it acquires the desired user service information in a short time, and therefore, low communication expenses.

REFERENCES:
patent: 5887269 (1999-03-01), Brunts et al.
patent: 2002/0083065 (2002-06-01), Sasaki et al.
patent: 2002/0103781 (2002-08-01), Mori et al.
patent: 2003/0004888 (2003-01-01), Kambayashi et al.
patent: 2000-321082 (2000-11-01), None

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