A method and system for presenting data on a medium for capture by an input device is described. The method embeds a symbol design, such as an embedded interaction code (EIC), in an image on a display screen, such as a liquid crystal display (LCD). A grid with a plurality of pixels defines a size of...http://www.google.com.hk/patents/US20070001950?utm_source=gb-gplus-share專利 US20070001950 - Embedding a pattern design onto a liquid crystal display
