Patent ID: 7162364

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