PURPOSE: To provide a navigation system which needs a user to make no troublesome operations and is suitable for convenient service in restricted regions.
CONSTITUTION: This system has an information setting signal output means which transmits a predetermined information setting signal to a display signal output device S of a vehicle having stopped turning in a predetermined direction at a reference position. The display signal output device S has an operation start command means 9 which starts the operation of a position detector 11 upon sensing an information setting signal. The position detector 11 detects a vehicle's current direction and its position to a reference position from a vehicle's direction detected by a piezoelectric gyroscope 13 and a vehicle's speed detected by a linear accelerator 12. Directions and positions are displayed on an optical information display means D along with map information.
SAITO HIDEFUMI
HORIKAWA KOJI
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