And high-density multi-layer optical disc, and the recording layer by data recording to it, spare area management method of high-density multi-layer optical disk

摘要

High-density multi-layer optical disc, the recording layer by data recording to it relates to a spare area management method, the invention, a plurality of recording layers formed on the high-density multi-layer optical discs such as BD-RE Dual Layer, etc. and manage by adding records to be suitable for multi-layer management information to allow or to cross linking, and record the data or by dividing independently to the respective recording layers, high-density multi-layer optical disc as well as assign classified respectively an outer spare area between the inner peripheral spare area in a plurality of recording layers that are formed in, and divided into the recording layer by or or used in conjunction to without regard to the recording layer spare plurality of regions assigned each By managing by adding records to be suitable for multi-layer management information to be able to be used with, manage and use efficiently more recording layers formed on the high-density multilayer optical disc , I have to be able to manage and use more efficiently the spare plurality of areas assigned to each recording layer.