Magellan Dis, Inc.

Mitac International Corporation

Chandiran Palanisamy

Jeffrey Alan Millington

Anthony Albert Slominski

Rhonda Marie Paprocki

A method of selectively providing cartographic features on a video display of a navigation system for improved rendering is provided. The method includes the steps of determining an operational mode of the navigation system, selecting a desired cartographic entity for a cartographic feature based upon the operational mode, and displaying the desired cartographic entity on the video display. For example, less detailed cartographic entities are selected for display when the navigation system is in an operational mode that requires the video display to be updated frequently ore a mode in which it is desirable to focus the user's attention on a different cartographic entity. The less detailed cartographic entity may have a lower intensity than or contrast less with surrounding cartographic entities. In this manner, the user may be provided the desired level of map details with the video display regenerated rapidly.

Selective rendering of cartographic entities for a navigation system

A method and apparatus of utilizing waypoints for a vehicle is provided. A first waypoint relating to a first vehicle position is added to a second waypoint relating to a second vehicle position. The waypoints are saved as a route. Waypoint information relating to the waypoints and route information relating to the route may be manipulated. The method also includes displaying at least a portion of the route on a display screen and indicating a desired direction of vehicle travel from a current vehicle location to one of the waypoints. According to the present invention, the drive may be alerted when the vehicle has come within a particular distance of the waypoint or if the vehicle has veered from the route by a particular distance.

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Rochester Hills, MI, United States of America

Chandiran Palanisamy