Patent ID: 7668648

Claim:
A navigation system for use in a motor vehicle, comprising: a position sensor that senses the geographic position of the navigation system and provides a first navigation system position signal indicative thereof; a data bus; a navigation computing unit that receives the first navigation system position signal, and transmits onto the data bus (i) a first position signal indicative of the position of a trip starting location, (ii) a second position signal indicative of a trip destination location, and (iii) the first navigation system position signal; a monitor unit that includes a memory device that includes map data; a monitor computing unit that receives from the data bus (i) the first position signal, (ii) the second position signal and (iii) the first navigation system position signal, and accesses the memory device to generate initial image data including map data indicative of the trip starting location, the trip destination and the current position of the navigation system; and a display device responsive to the image data, to display an initial image indicative of the image data; where the navigation computing unit receives a second navigation position signal indicative of a new position of the navigation system and transmits the second navigation position signal over the data bus to the monitor computing unit, which generates revised image data including map data indicative of the trip destination and the updated position of the navigation system, which is provided for display on the display device.