Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2004-02-19
2008-09-23
Hellner, Mark (Department: 3663)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C342S357490
Reexamination Certificate
active
07428461
ABSTRACT:
A pedestrian navigation device (10A) of this invention has a position information reception unit (12), which obtains current position information from a GPS (20); a position information analysis unit (13), which calculates the current position by analyzing received current position information; a MAPDB (Map Data Base) (14), which stores map information; a multi-path control unit (17), which specifies a multi-path control distance to control multi-path interference; a central processing portion (11), which calculates current position display information, based on the current position calculated by the position information analysis unit (13), on map information stored in the MAPDB (14), and on the multi-path control distance specified by the multi-path control unit (17); a display unit (15), which displays current position display information; and an input unit (16), which inputs distance specification value and route search conditions and issues instructions to begin navigation. By this means, a pedestrian navigation device is provided, which enables to accurately navigate the route of a pedestrian by appropriately correcting the multi-path interference.
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Matsunaga Takayuki
Ohnishi Keisuke
Hellner Mark
Navitime Japan Co., Ltd.
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