Map evaluation system and map evaluation method

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

Reexamination Certificate

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Details

C701S200000, C701S202000, C701S205000, C701S207000, C701S210000, C701S213000, C701S216000, C701S217000, C701S220000

Reexamination Certificate

active

07831389

ABSTRACT:
An absolute position detector of a navigation device detects an absolute position of a vehicle. An on-map position of the vehicle is acquired based on the detected absolute position to be on a road map indicated by map data stored in the navigation device. Absolute positions detected by the absolute position detector are stored in association with on-map positions acquired based on the detected absolute positions as travel track information when the vehicle travels. An error of the map data as a reliability degree of the map data is set by comparing the travel track information with the map data.

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