公开(公告)号：US20030142361A1

公开(公告)日：2003-07-31

申请号：US10066116

申请日：2002-01-30

Applicant: Digimarc Corporation

Inventor： Scott E. Walton

IPC: H04N001/44 ,  H04K001/00 ,  G06K015/02

CPC classification number: H04N1/32267 ,  H04N1/32144 ,  H04N2201/0067 ,  H04N2201/0068 ,  H04N2201/3271

Abstract: The present invention provides a method and system for watermarking a file which is in a PDL such as PostScript. The present invention can be used to either watermark a PDL file and then generate a watermarked PDL file or the present invention can be part of the Interpreter in a printer which takes a file in a PDL and which then generates watermarked raster images which are printed. The present invention includes an nullinterpreternull which generates raster images from the PDL file. The raster images are then watermarked using conventional watermarking techniques. Next the raster images are either printed (if the interpreter is part of a printer) or the raster images are combined into a new PDL file.

Abstract translation: 本发明提供了一种用于对位于诸如PostScript之类的PDL中的文件进行水印处理的方法和系统。 本发明可以用于对PDL文件进行水印，然后生成水印的PDL文件，或者本发明可以是打印机中的解释器的一部分，该打印机在PDL中获取文件，然后生成打印的水印的光栅图像。 本发明包括从PDL文件生成光栅图像的“解释器”。 然后使用常规水印技术对光栅图像进行水印。 接下来，打印光栅图像（如果解释器是打印机的一部分），或将光栅图像合并到一个新的PDL文件中。