Patent ID: 7911444
Filing Date: 2011-03-22
Classification: G06F

Abstract:
1. A method for detecting an object or user input provided with an object, where the object is on or adjacent to an interactive display surface, using a scanning light source, comprising the steps of: (a) illuminating an interactive display surface with a plurality of scanning light sources, wherein the interactive display surface has an external surface and an internal surface, wherein each of the scanning light sources is configured to emit light of a same predetermined wavelength and to simultaneously scan separate regions of the interactive display surface with the light of the predetermined wavelength, so that the entire interactive display surface is fully scanned over time, and wherein illuminating the interactive display surface includes the plurality of scanning light sources emitting the light through a photosensitive light surface toward the interactive display surface so as to illuminate an object on or adjacent to the external surface of the interactive display surface; and (b) detecting light of the predetermined wavelength that is reflected from the object that is on or adjacent to the external surface of the interactive display surface, the light that is reflected being detected as at least one of the plurality of scanning light sources is illuminating the object with the light of the predetermined wavelength, and wherein the photosensitive light surface acts as a detector for the predetermined wavelength reflected from the object.