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Invention Application
US20050286948A1 Watermarking a page description language file 有权
水印一个页面描述语言文件

  • Patent Title: Watermarking a page description language file
  • Patent Title (中): 水印一个页面描述语言文件
  • Application No.: US11142827
    Application Date: 2005-05-31
  • Publication No.: US20050286948A1
    Publication Date: 2005-12-29
  • Inventor: Scott Walton
  • Applicant: Scott Walton
  • Main IPC: H04N1/32
  • IPC: H04N1/32 ;  G06F15/00
Watermarking a page description language file
Abstract:
The present invention provides methods and systems for steganographically encoding a file which is in a page description language (PDL) such as PostScript. Aspects of the present invention can be used to: i) encode a PDL file and generate an encoded PDL file; and ii) provide an “interpreter” which generates raster images from a PDL file. Portions of the raster images can be steganographically encoded. Encoded raster images can be printed or the raster images can be combined into a new PDL file.
Abstract(Chinese):

本发明提供了用于对诸如PostScript之类的页面描述语言（PDL）的文件进行隐写编码的方法和系统。 本发明的方面可用于：i）编码PDL文件并生成编码的PDL文件; 和ii）提供从PDL文件生成光栅图像的“解释器”。 栅格图像的一部分可以被隐写编码。 可以打印编码的光栅图像，或将光栅图像组合成新的PDL文件。

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