NAVIGATION SYSTEM

摘要

Provided is a technology for conducting route guidance with high accuracy regardless of type of terminal or the software environment in a navigation system in which an onboard apparatus displays route guidance information received from a portable terminal. The navigation system includes a self-contained navigation sensor mounted in a vehicle; a mobile terminal having a GPS receive and creating and sending route guidance information for a destination; and an onboard apparatus displaying the route guidance information received from the mobile terminal. The onboard apparatus creates a corrected current position based on a current position detected by the GPS receiver and position change information detected by the self-contained navigation sensors, and sends the corrected current position to the mobile terminal. The mobile terminal creates route guidance information based on the corrected current position and map information received from the onboard device.

主权项

1. A navigation system comprising:
a self-contained navigation sensor that is mounted in a vehicle and detects position change information of the vehicle; a portable terminal that includes a GPS receiver to detect a current position, and creates and transmits route guidance information for a destination; and an onboard apparatus that is mounted in the vehicle and displays on a display unit the route guidance information received from the portable terminal, wherein the onboard apparatus creates a corrected current position based on the current position detected by the GPS receiver and the position change information detected by the self-contained navigation sensor, and transmits the corrected current position to the portable terminal, and wherein the portable terminal creates the route guidance information based on the corrected current position received from the onboard apparatus and map information.