Patent ID: RE45262

Claim:
A navigation system device comprising: a subscriber unit configured to receive information from and transmit information to the Internet via a service provider , the subscriber unit including a global positioning system mechanism to determine subscriber position information, an output mechanism to convey information to a subscriber, and a speech processing mechanism to accommodate communications between the subscriber unit and the subscriber; and a service provider configured to communicate with the subscriber unit, the communications between the service provider and the subscriber unit including the reception and transmission of navigation information including map information, wherein the output mechanism prompts to prompt the subscriber to speak destination information, the speech processing mechanism receives to receive the destination information , and the subscriber unit transmits to transmit the subscriber position information and the destination information to the service provider, and the service provider responds by transmitting the and receive from the service provider navigation information to including map information, the subscriber unit , which conveys to convey the navigation information to the subscriber via the output mechanism, wherein the navigation information involves a plurality of points along a route from a current position to a destination, and wherein the subscriber unit is configured to determine a distance between a current position and a position related to one or more points along the route, and wherein the subscriber unit requests is to request new map information from the service provider when the distance exceeds a predetermined distance.