Navigation guidance system

摘要

A navigation system may calculate a route to a destination and output guidance information with an output device to guide a user of the navigation system along the calculated route. If it is determined that a navigation device has left the calculated route, the navigation system may prompt the user asking whether output of guidance information should be suspended. If the output of guidance information should be suspended, the navigation system may suspend the output of guidance information and calculate a new route to the destination while the output of guidance information is suspended. The navigation system may calculate an estimated arrival time at the destination based on the calculated new route and output the estimated arrival time while the output of guidance information is suspended.

主权项

1. A method for providing guidance information with a navigation system, the method comprising the steps of:
calculating a route to a destination; outputting the guidance information with an output device of the navigation system to guide a user of the navigation system along the calculated route; determining, based on a current position of a navigation device of the navigation system, if the navigation device has left the calculated route; outputting, in response to determining that the navigation device has left the calculated route, a prompt for user input whether output of guidance information with the output device of the navigation system should be suspended; suspending the output of guidance information; calculating a new route to the destination substantially concurrently with suspension of the output of guidance information; calculating an estimated arrival time at the destination based on the calculated new route; and outputting the estimated arrival time with the output device of the navigation system substantially concurrently with suspension of the output of guidance information.