发明名称 Security font system and method for generating traceable pages in an electronic document
摘要 A security font system and method are provided for generating traceable pages in an electronic document. The method comprises: accepting an electronic document; modifying font print instructions associated with selected characters; and, transmitting the document with the modified font print instructions to a destination. In some aspects, the method further comprises saving a record of the modified font print instructions. The font print instructions can be modified clandestinely. If a printed copy of the document with modified font instructions is created, the printed copy is identical to a printed copy of a document with no modified font print instructions, as the font modification can be made undetectable, or almost undetectable to the human eye. In other aspects, the method comprises: receiving an alleged copy of the electronic document with the modified font print instructions; and, comparing the modified font print instructions in the received document to the record.
申请公布号 US2005007612(A1) 申请公布日期 2005.01.13
申请号 US20030617483 申请日期 2003.07.11
申请人 SHARP LABORATORIES OF AMERICA, INC. 发明人 BOURRET MARY LOUISE
分类号 G06F21/00;H04N1/32;(IPC1-7):G06F3/12;H04N1/44 主分类号 G06F21/00
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