| 摘要 |
PROBLEM TO BE SOLVED: To provide an authenticity discriminating structure, in which fine information consisting of characters and symbols is further formed by means of unevenness inside or outside of a fine character. SOLUTION: In this authenticity discriminating structure, first secret information consisting of either one of characters and symbols or their combination is formed by means of unevenness in a hologram or a diffraction grating and second secret information consisting of either one of characters and symbols or their combination is formed by means of unevenness inside or outside of the first secret information. COPYRIGHT: (C)2008,JPO&INPIT |
