06917724 is referenced by 185 patents and cites 447 patents.

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.

Title
Methods for opening file on computer via optical sensing
Application Number
10/118653
Publication Number
6917724 (B2)
Application Date
April 8, 2002
Publication Date
July 12, 2005
Inventor
Geoffrey B Rhoads
West Linn
OR, US
Burt W Perry
Lake Oswego
OR, US
J Scott Carr
Tualatin
OR, US
Phillip Andrew Seder
Portland
OR, US
Agent
Digimarc Corporation
Assignee
Digimarc Corporation
OR, US
IPC
G06K 007/10
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