Patent ID: 7609598
Filing Date: 2009-10-27
Classification: G11B

Abstract:
1. A hybrid optical disc comprising: a plurality of recording layers arranged in a laminating direction, including a first layer and a second layer responsive to a first laser light and a second laser light, respectively, the first and second laser lights having different wavelengths; more than one set of contents information recorded in the first and second recording layers using a first format and a second format, respectively; first regional information, recorded in the first recording layer, for specifying regions allowed for reproducing the contents information recorded in the first recording layer, from regions divided by first regional assignment for the first format; and second regional information, recorded in the second layer, for specifying regions allowed for reproducing the contents information recorded in the second recording layer, from regions divided by second regional assignment for the second format, wherein the first regional assignment is different from second regional assignment, and the regions allowed for reproducing the contents information recorded in the first layer match the regions allowed for reproducing the contents information recorded in the second layer.