An optical recording medium includes a substrate, a light transmission layer and a plurality of recording layers between the substrate and the light transmission layer and capable of recording data in the plurality of recording layers and reproducing data recorded in the plurality of recording layers...http://www.google.fr/patents/US20040004932?utm_source=gb-gplus-shareBrevet US20040004932 - Optical recording medium
Numéro de demande: 10/612,615 Numéro de publication: US 2004/0004932 A1 Date de dépôt: 1 juil. 2003 Brevet délivré: US7321481 ( Date de délivrance 22 janv. 2008)
