Touch-contact operating field for automobile navigation aid - has temporary display of switch pattern on screen used to display navigation map

摘要

The operating field for an automobile navigation aid uses a switch pattern superimposed on the navigation display provided on a screen, which can be contacted by the finger of the user, to initiate the required switch function. The switch pattern is automatically erased after a defined interval from its initial display. The display of the switch pattern is initiated by detecting the proximity of the users finger relative to a defined area of the display screen. ADVANTAGE - Allows display screen to be used simultaneously as touch-contact operating field.