Patent ID: 8113726

Claim:
A display device comprising: a housing; a screen mounted to the housing; an image capture device; and a drive platform mounted to the housing, the drive platform comprising: a rotatable part to which the image capture device is mounted, the rotatable part being like a sphere; a stationary part mounted to the housing, the stationary part comprising a spherical chamber in which the rotatable part is received and a capture window through which the image capture device is exposed, and two piezoelectric motors arranged to rotate the rotatable part about two axes, to move the image capture device with respect to the housing, each piezoelectric motor comprising a piezoelectric element having a friction nub which contacts and drives the rotatable part to move the image capture device within the capture window; wherein the two piezoelectric elements are disposed on opposite sides of a plane passing through a spherical center of the rotatable part, so that the rotatable part rotates about a first axis of said two axes when the two friction nubs move in an identical direction, and the rotatable part rotates about a second axis of said two axes when the two friction nubs move in opposite directions.