Expandable, multi-level intelligent vehicle highway system

Claim 1

An expandable, multi-level intelligent vehicle highway navigation system for a vehicle having an invehicle unit including a wheel pulse input signal generator such as a odometer electronic signal device, and a power supply and an out of vehicle central processing means, the system comprising: global positioning means for determining the initial and present position in latitude and longitude coordinates of the vehicle; a memory unit adapted to contain a plurality of addresses, and points of interest representing designation locations identification, said addresses and points of interest identified by latitude and longitude coordinates; a keyboard for inputting into the memory unit the desired designation identification for selecting a route and the segments thereof for directions from the initial location to the designation location; radio-frequency means for communication between said memory unit and the central processing means for addressing the central processing means for the generation and transmission of route segments and travel information to said memory unit of the vehicle; a display unit for displaying graphic symbols indicating the direction of travel of the vehicle for each route segment including the direction of turning and the distance of each segment; including a data display unit for displaying alphanumeric symbols describing the several segments of the route; and a controller adapted to receive the signals generated by the wheel pulse input signal generator, global positioning means and the power supply, said controller for organizing and operating said display unit to present successive segments of the route in response to the distance traveled as measured by the pulses from the wheel pulse input generator.