Generally the more effective is the copy protection provided on an optical disc, such as a DVD, the greater is the likelihood that the copy protection will adversely interfere with legitimate uses of the optical disc. It is therefore proposed to include at least one region of subversive data within the...http://www.google.fr/patents/US20050185926?utm_source=gb-gplus-shareBrevet US20050185926 - Relating to the copy protection of optical discs
Numéro de demande: 10/939,186 Numéro de publication: US 2005/0185926 A1 Date de dépôt: 10 sept. 2004 Brevet délivré: US8059937 ( Date de délivrance 15 nov. 2011)
