In-vehicle information apparatus and in-vehicle navigation...

Details In-vehicle information apparatus and in-vehicle navigation... In-vehicle information apparatus and in-vehicle navigation...

2011-08-02

2011-08-02

Tran, Khoi (Department: 3664)

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

C701S200000, C701S209000

Reexamination Certificate

active

07991547

ABSTRACT:
From among high upland area determination data stored in a hard disk drive, only a portion corresponding to a required segmental region is read into an external memory along with traveling of a vehicle. Determining of a high upland area is then executed based on the portion of the high upland determination in the external storage device. When a high-upland division is present in a vicinity of a present position, a portion of the high upland area determination data is read into the external memory. The read portion of the high upland area determination data corresponds to a high upland area, which covers all the high-upland divisions adjacently existing starting from the high-upland division in the vicinity of the present position. When a high-upland division is not present in the vicinity of the present position, a portion of the high upland area determination data corresponding to a segmental region having a predetermined minimum range centering on the present position is read into the external memory.

REFERENCES:
patent: 7171305 (2007-01-01), Minato et al.
patent: 7584025 (2009-09-01), Tanaka
patent: 7698057 (2010-04-01), Kobayashi et al.
patent: 7912513 (2011-03-01), Tanaka et al.
patent: 2004/0267446 (2004-12-01), Minato et al.
patent: 2008/0065323 (2008-03-01), Kobayashi et al.
patent: 2008/0221789 (2008-09-01), Oono
patent: 2009/0076724 (2009-03-01), Kobayashi et al.
patent: 2009/0164117 (2009-06-01), Takashima

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