In an interactive display table that uses infrared (IR) light to detect an object on an interactive display surface, IR light sources within the table are controlled in response to the level of ambient IR light passing through the interactive display surface. Light from the IR light sources that is reflected...http://www.google.com.au/patents/US7787706?utm_source=gb-gplus-sharePatent US7787706 - Method for controlling an intensity of an infrared source used to detect objects adjacent to an interactive display surface
