Patent ID: 7584432
Filing Date: 2009-09-01
Classification: G06F,G09B

Abstract:
1. An interactive display system comprising: a projector; a device onto which an image is projected from the projector; a computing means; a pointing device; and a plurality of remote signaling devices, in which system: the computing means is arranged to supply image information to the device onto which an image is projected from the projector; the plurality of remote signaling devices are operable to transmit signals to a receiver portion of the device onto which an image is projected from the projector only in response to a request signal from the device onto which an image is projected from the projector; the device onto which an image is projected from the projector includes position indication means for determining the position of the pointing device relative to a surface of the device onto which an image is projected from the projector; the pointing device is operable to: the device onto which an image is projected from the projector is a communication hub of the system, arranged to: