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:
Nov. 13, 2001
Filed:
Nov. 03, 1999
Applicant:
Inventors:
Robert D. Powell, Issaquah, WA (US);
Mark J. Nitzberg, Cambridge, MA (US);
Assignee:
Digimarc Corporation, Tualatin, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 ; H04K 1/00 ;
U.S. Cl.
CPC ...
G06K 9/00 ; H04K 1/00 ;
Abstract
A method of marking a work of authorship without apparent evidence of data alteration. The work (e.g., an image) is represented by a set of data elements (e.g., pixels). The marking includes providing first plural-bit data, and computing therefrom additional, error correcting data. This composite set of data is used in image marking, permitting at least certain errors to be discerned and corrected when the marking is later discerned from the image.
Powell, Robert. (2001). Image marking with error correction (U.S. Patent No. 6317505). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6317505
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile