| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a variable (guilloche) pattern for embedding specific security data into a document. <P>SOLUTION: The variable guilloche pattern useful as security data to be embedded in a printed document has an exterior portion and an interior portion, where the exterior portion configured for seamless tileable association in the congregated base patterns to form the guilloche pattern, and the interior portion comprises a variable pattern distortion wherein a plurality of distinctive ones of the variable distortions respectively correspond to a set of predetermined template symbols. <P>COPYRIGHT: (C)2009,JPO&INPIT |
