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:
Aug. 19, 2008
Filed:
Apr. 05, 2005
Applicants:
Jeffrey Adam Bloom, West Windsor, NJ (US);
John Scott Nafziger, Morrisville, PA (US);
Inventors:
Jeffrey Adam Bloom, West Windsor, NJ (US);
John Scott Nafziger, Morrisville, PA (US);
Assignee:
Transpacific Information, LLC, Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A low-frequency, temporally asymmetric watermark carrier decreases in luminance at a slower rate than it increases in luminance. This allows the carrier to be embedded, e.g., in a video work, in a manner that renders the resultant watermark virtually invisible to the human eye. Moreover, the resultant watermark is substantially resistant to common pirating techniques in which high-frequency visual content (e.g., including watermark data) tends to be filtered out by piracy processing.