| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for multi-purpose woven patterns, having a small number of necessary dots, having a small number of necessary copy prohibition codes, capable of quickly determining copy prohibition secret documents with very high recognition accuracy, and preventing false recognition for unspecified documents other than copy recognition.SOLUTION: A method can fuse a character floating function, a copy prohibition function and a document tracking function so as to determine whether it is copied document or an original document according to multi-purpose woven patterns by a copy machine. The method can take advantage of intervals of the multi-purpose woven patterns for realizing the character floating function and the document tracking function to add copy prohibition codes to embed copy prohibition information into even a page entirely having characters. In addition, the method can be also applied for printing having low accuracy, and has an excellent property of high-speed reading. |
