Patent Number: 7,711,473

Title: Map data update method and navigation apparatus

Abstract: A navigation apparatus is disclosed comprising update functions to update nationwide updated version map data using route-specific update data, and to update the nationwide updated version map data to the next nationwide updated version map data using nationwide update data. A map update processing portion of this navigation apparatus performs updates of map data in the background of navigation control, gives priority to update processing using the route-specific update data over update processing using the nationwide update data, and, if map files to be updated using route-specific update files included in the route-specific update data have not been updated using the nationwide update data, performs updates using the nationwide update data, and then performs updates using route-specific update files.

Inventors: Sekine; Minoru (Shinagawa, JP), Otsuki; Kohei (Iwaki, JP), Wakasugi; Takashi (Shinagawa, JP), Konishi; Hitoshi (Haga, JP), Arai; Masayuki (Haga, JP)

Assignee: Alpine Electronics, Inc.

International Classification: G06F 17/30 (20060101)

Expiration Date: 5/04/12018