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
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