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. 17, 2010
Filed:
Oct. 24, 2002
Gerrit Cornelis Langelaar, Eindhoven, NL;
Gerrit Cornelis Langelaar, Eindhoven, NL;
Civolution B.V., Eindhoven, NL;
Abstract
Advanced watermark embedders use psycho visual/acoustic models to minimize perception of the embedded watermark in media contents. However, it is expensive to implement such advanced watermark embedders in consumer appliances () such as DVD recorders. In accordance with the invention, embedding strength parameters (JND) are calculated () off-line at a remote location () and transmitted along with the media contents to the consumer appliance (). A relatively simple embedder () uses the received parameters to control the strength of the watermark () to be embedded. The parameters may be accommodated in the transmitted signal as payload of a fragile watermark or as user data in an encrypted MPEG stream.