The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2003
Filed:
Jun. 13, 2002
Applicant:
Inventors:
Robert D. Powell, Vashon, WA (US);
Mark J. Nitzberg, Cambridge, MA (US);
Assignee:
Digimarc Corporation, Tualatin, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K 1/00 ;
U.S. Cl.
CPC ...
H04K 1/00 ;
Abstract
A digital image is scanned to generate image data, which is processed to steganographically embed plural-bit auxiliary data. The system is useful, e.g., for capturing and marking digital images without noticeably changing their visual appearance.