Abstract: An interactive display is described wherein a rear projection screen is mounted above a base housing. Inside the housing is a touch position sensor to which a pedestal is mounted and extends through an opening in the housing to support the rear projection screen at a comfortable level. The touch position sensor produces touch signals indicative of where a person touched the rear projection screen. A projector responsive to video signals from a program storage device controlled by the touch signals is mounted inside the base housing and generates an optical beam which is directed via a reflector onto the rear of the projection screen.

Abstract: An interactive display system is described using a standard TV monitor placed on a touch position sensor. A control operates with the output touch signals from the touch position sensor to produce frame number signals that are representative of the frames stored on a laser disk. The laser disk player generates the desired video frame signals which are applied to the TV monitor to display the frames. The touch signals from the touch position sensor provide an indication of where a person has made contact with the screen of the TV monitor to thus enable the person to interact with the information in the frames stored on the laser disk in a simple and rapid manner.

Abstract: A film projection device having a screen, light source, lens and mirror system and a reference indicator disposed immediately in front of the mirror for shadow casting a reference line onto the image of a film projected onto the screen via initial projection onto the mirror.