Patent ID: 6496459
Filing Date: 2002-12-17
Classification: G11B

Abstract:
A recordable optical disc ejectable from a recording apparatus, the recordable optical disc storing read only information and having a recordable area;wherein the read only information contains (1) information about a type of the disc which indicates whether the disc is a recordable disc or a rewritable disc, (2) information about a reflectivity of the disc, (3) information about a value of an optimal recording power for signal recording on the disc, (4) information about a time base of an optimal recording power waveform for signal recording on the disc, and (5) information about a manufacturer of the disc; and wherein the recordable area stores (1) information about a value of an optimal recording power for signal recording on the disc, (2) information about a time base of an optimal recording power waveform for signal recording on the disc, (3) information about a manufacturer of a recording apparatus for signal recording on the disc, and (4) information about an identification number of the recording apparatus.