发明名称 |
PRINTED PRODUCT, METHOD AND DEVICE FOR DETECTING SUCH PRINTED PRODUCT, AND AUTHENTICATION METHOD AND DEVICE |
摘要 |
This invention implements a printed product capable of embedding a variety of information which are unrecognizable by human eyes in image lines included in a security line drawing without decreasing the artistic effect of printed image lines and authenticating the information on the basis of the Fourier-transformed pattern of the printed image lines. This invention provides an information authenticable printed product having a plurality of line drawings in which an image line includes a unit image line including a plurality of image lines arrayed in parallel along a normal direction, and the normal-direction intervals between the plurality of image lines in the unit image line are set in correspondence with information to be embedded, an authentication method, a method of embedding information in the printed product, and an authentication apparatus. |
申请公布号 |
EP1864825(B1) |
申请公布日期 |
2014.05.28 |
申请号 |
EP20060730251 |
申请日期 |
2006.03.28 |
申请人 |
NATIONAL PRINTING BUREAU, INCORPORATED ADMINISTRATIVE AGENCY |
发明人 |
KIUCHI, MASATO;MATSUMOTO, YOSHINOBU |
分类号 |
B42D25/00;B41M3/14;G07D7/20;H04N1/387 |
主分类号 |
B42D25/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|