Patent ID: 7053917

Claim:
A road vehicle display device comprising: a display section configured and arranged to be fixedly coupled to a road vehicle to display an image within a display region of a non-head mounted display screen to a viewer inside the road vehicle; a motion detecting section configured and arranged to compute a movement of the display section by determining movement of the road vehicle in which the road vehicle display device is used; an image displacement computing section configured to compute a translational displacement of the display section based on the movement of the display section; a viewer motion determining section configured and arranged to determine a viewer motion value that is indicative of a movement of a head portion of a viewer watching the display section; a relative displacement computing section configured to compute a relative displacement between the display section and the head portion of the viewer based on the translational displacement of the display section computed by the image displacement computing section and the viewer motion value of the head portion of the viewer determined by the viewer motion determining section; and a display control section configured to shift a display position of the image within the display region of the display screen by an amount based on the relative displacement to stabilize the image within the display section to the viewer.