Image display device and mobile device

Abstract

A projection display device includes an image generating part which generates an image to be displayed on a predetermined image display surface; a circuit part which operates the image generating part based on an image signal; an image acquiring part which acquires an image signal to be outputted from a mobile device; a tilt acquiring part which acquires, from the mobile device, a tilt signal indicating a tilt angle of a display surface of the mobile device with respect to a reference state; and screen state changing part which changes a state of a screen to be displayed on the image display surface in accordance with the tilt signal. The screen state changing part inclines, on the image display surface, an image based on the image signal acquired by the image acquiring part, based on the tilt signal in accordance with the inclination of the display surface.

Dependencies are inferred from the claim text.