The present invention provides methods and systems for identifying content to help ensure legal uses of the content. In one implementation a method is provided to include obtaining content, wherein the content comprises a steganographic signal hidden therein through subtle changes to data representing...http://www.google.fr/patents/US20060188128?utm_source=gb-gplus-shareBrevet US20060188128 - Method and System for Managing and Controlling Electronic Media
Method and System for Managing and Controlling Electronic Media
Numéro de demande: 11/380,181 Numéro de publication: US 2006/0188128 A1 Date de dépôt: 25 avr. 2006 Brevet délivré: US7313251 ( Date de délivrance 25 déc. 2007)
