Stanley E Graham

US Patent:

6522770, Feb 18, 2003

Filed:

Aug 1, 2000

Appl. No.:

09/629401

Inventors:

Phillip Andrew Seder - Portland OR
J. Scott Carr - Beaverton OR
Burt W. Perry - Lake Oswego OR
Stanley E. Graham - Lake Oswego OR
Geoffrey B. Rhoads - West Linn OR

Assignee:

Digimarc Corporation - Tualatin OR

International Classification:

G06K 900

US Classification:

382100, 235375, 380 54, 382306

Abstract:

By printing documents and other objects with machine readable indicia, such as steganographic digital watermarks or barcodes, a great variety of document management functions can be enabled. The indicia can be added as part of the printing process (after document data has been output by an originating application program), such as by printer driver software, by a Postscript engine in a printer, etc. The indicia can encode data about the document, or can encode an identifier that references a database record containing such data. By showing the printed document to a computer device with a suitable optical input device (e. g. , a webcam), an electronic version of the document can be recalled for editing, or other responsive action can be taken.