Navigation device and method for displaying alternative routes.

摘要

Navigation device programmed with software and a database of maps that allows you to plan a route to a destination, in which the device is further programmed so you can display a map navigation road in 2D or 3D on a device touch screen display, the map showing the current location of the device on a planned route; It characterized in that the user can, by touching the screen, completely exit the navigation map in 2D or 3D to a menu screen which displays one or more options that, if selected through a further touch action, initiate a new calculation find a detour away from the planned route.