A display system able to display a television screen and a navigation
screen, giving due consideration to safe vehicle operation, provided with
a screen switching unit for displaying a television screen instead of a
navigation screen at least at part of a display screen during display of
the navigation screen, a switching instructing unit for instructing
switching to the screen switching unit when detecting that a predetermined
event has occurred, or a screen area setting unit for setting a specific
area in the screen for display by switching by the screen switching unit
instead of the switching instructing unit.
