AN INTERACTIVE SYSTEM AND A METHOD OF ENCODING

摘要

The present invention relates to an interactive system and a method for encoding, e.g. position encoding, a touch by an object. The system comprises a display, a waveguide for guiding light, which waveguide is displaceable in relation to the display, a first light source for emitting light into the waveguide, and a detector for detecting light from the waveguide. The waveguide may be in a first position next to the display, and in a second position displaced in relation to the display. When the waveguide is in the first position, a first surface of the waveguide is a touch-sensitive surface, such that the object touching the first surface disturbs at least a part of the light from the first light source, the disturbance of the light being detectable at the detector. Thus, encoding of the touch is enabled.