Vehicle navigation system

Details Vehicle navigation system Vehicle navigation system

Filed on

1992-07-31

Date issued

1994-05-10

Examiner

Chin, Gary

Patent Class

Boots, shoes, and leggings

Other Related Categories

364444, 340990, 340995, G06F 1550

Type

Patent

Status

active

Patent number

053114345

Description

ABSTRACT:
In a vehicle navigation system having memory for storing road map information, calculating unit for calculating the optimum route from a given initial location to the destination and display device for sequentially displaying the directions in which the vehicle operator should drive to follow the route, the system comprises a command unit for commanding the calculating unit to recalculate the route when the vehicle deviates from the route and halt/resume unit for halting and resuming the operation of the calculating unit. When the operator decides to make a temporary deviation from the calculated route, he can use the halt/resume unit to prevent the system from recalculating the route when he leaves it and then can use it again to restart the route guidance when he return to it. This prevents unnecessary calculations from being made.

REFERENCES:
patent: 4774671 (1988-09-01), Itoh et al.
patent: 4926336 (1990-05-01), Yamada
patent: 5031104 (1991-07-01), Ikeda et al.
patent: 5159556 (1992-10-01), Schorter
patent: 5168452 (1992-12-01), Yamada et al.
patent: 5184303 (1993-02-01), Link

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