Navigation apparatus

Details Navigation apparatus Navigation apparatus

2005-03-22

2005-03-22

Zanelli, Michael J. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

C340S995240

Reexamination Certificate

active

06871143

ABSTRACT:
A navigation route obstructed-by-building detection unit detects that a navigation route is obstructed by buildings, and a modified navigation route drawing unit in a navigation route drawing unit displays the navigation route by lifting it on or above the buildings. At the time, a ratio of obstructed portion calculating unit calculates the ratio of the portion of the navigation route obstructed by the buildings, and a display of navigation route in lifted state discriminating unit determines whether or not the ratio is equal to or larger than a predetermined value. When the ratio is equal to or larger than the predetermined value, an amount of navigation route displayed in lifted state calculating unit calculates a lifting amount, and a modified navigation route drawing unit displays the navigation route by lifting it by the lifting amount. Thereafter, a building/landmark image forming unit semi-transparently draws the portion of the buildings corresponding to the portion of the navigation route that is lifted and displayed. With the above arrangement, a user can easily observe the navigation route which is otherwise poor in observability.

REFERENCES:
patent: 6169552 (2001-01-01), Endo et al.
patent: 6285317 (2001-09-01), Ong
patent: 6356840 (2002-03-01), Kusama
patent: 6360168 (2002-03-01), Shimabara
patent: 6710774 (2004-03-01), Kawasaki et al.
patent: 20020063705 (2002-05-01), Moriwaki et al.
patent: 0803706 (1997-10-01), None

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