Multi-layered high-density recording medium and optical power adjusting method therefor

Abstract

A multi-layered high-density recording medium and an optical power adjusting method for use with the same. Control information is pre-recorded in a specific area of at least a specific recording layer among the multiple recording layers, wherein the control information and includes each reference power information for respective recording layers. The method includes: (a) reading control information from a specific area of the recording medium, wherein the control information includes each reference power information for respective recording layers and is pre-recorded in the specific area of at least a specific recording layer among the multi recording layers; (b) adjusting a power value to be used for at least one of a recording operation and a reproducing operation at a target recording layer, by referring to the read control information; and (c) performing at least one of the recording and reproducing operations based on the adjusted power value.

Dependencies are inferred from the claim text.