Method and system for determining true touch points on input touch panel using sensing modules

摘要: The present invention is to provide a method and system for determining true touch points on input panel. Two optical sensing module pairs are used determine two groups of possible regions, further with overlap checking virtual shadow regions find out potential points. Occlusion implemented acquire from the capable acquiring in fast reliable way. Furthermore, an interactive comprises modules having their corresponding emitters different wavelengths, light filters peak transmission at wavelengths avoid interference effect over-exposed signal during detection by modules.