Patent ID: 7847942
Filing Date: 2010-12-07
Classification: G01J,G06F

Abstract:
1. A peripheral interface device comprising: at least one light source for directing a first light and a second light from said peripheral interface device onto a surface, wherein said first light comprises a first color, and wherein said second light comprises a second color; at least one sensor for sensing a first reflected light comprising a portion of said first light reflected from said surface, wherein said at least one sensor is operable to generate a first color measurement signal indicating an intensity of said first reflected light, said at least one sensor further for sensing a second reflected light comprising a portion of said second light reflected from said surface, and wherein said at least one sensor is further operable to generate a second color measurement signal indicating an intensity of said second reflected light; and a processor for accessing said first and second color measurement signals and determining a color coding of said surface based upon a relationship of said intensity of said first reflected light to said intensity of said second reflected light, and wherein said processor is further operable to determine a position of said at least one sensor with respect to said surface.