An IC having an image pickup element for optically picking up a code to output an image signal, and an optical system for optically inputting the code to the image pickup element are provided to a reading section for optically reading a code from an information recording medium having a portion...http://www.google.de/patents/US5767494?utm_source=gb-gplus-sharePatent US5767494 - Information reproduction system for reproducing multimedia information recorded with optically readable code 
