Patents by Inventor Scott E Walton

Scott E Walton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Watermarking a page description language file
    Patent number: 8228563
    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.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: July 24, 2012
    Assignee: Digimarc Corporation
    Inventor: Scott E. Walton
  • Watermarking a page description language file
    Patent number: 6899475
    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 “interpreter” 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.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: May 31, 2005
    Assignee: Digimarc Corporation
    Inventor: Scott E Walton
  • Watermarking a page description language file
    Publication number: 20030142361
    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.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 31, 2003
    Applicant: Digimarc Corporation
    Inventor: Scott E. Walton