Invention Grant
- Patent Title: Watermarking a page description language file
- Patent Title (中): 水印一个页面描述语言文件
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Application No.: US11142827Application Date: 2005-05-31
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Publication No.: US08228563B2Publication Date: 2012-07-24
- Inventor: Scott E. Walton
- Applicant: Scott E. Walton
- Applicant Address: US OR Beaverton
- Assignee: Digimarc Corporation
- Current Assignee: Digimarc Corporation
- Current Assignee Address: US OR Beaverton
- Main IPC: G06K15/00
- IPC: G06K15/00 ; G06K1/00
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.
Public/Granted literature
- US20050286948A1 Watermarking a page description language file Public/Granted day:2005-12-29
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