| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for generating a graphic mark and an interactive system for utilizing the graphic mark. <P>SOLUTION: An invisible graphic mark is provided on the surface of an object. The graphic mark, main information, namely a text or figure coexist on the surface of the object. The graphic mark does not interfere with the main information as long as mark observed by human eyes. Other pieces of information except the main information on the surface of the object are carried by the graphic mark. In addition to the main information on the surface of the object, additional information is obtained and an interactive operation is started by using an auxiliary electronic device. <P>COPYRIGHT: (C)2004,JPO</p> |
