Information recording medium, information recording medium authenticity checking method, information recording medium authenticity checking program, information recording medium sector reading method, and information recording medium sector reading program

Abstract

The present invention relates to an information recording medium on which information signals are recorded on the signal surface of a disc plate across a plurality of sectors in units of sectors and each of the plurality of sectors has at least a sector address and sector data. In particular, this information recording medium includes a first sector part, which includes at least one sector, and a second sector part which includes at least one sector having a sector address equal to the at least one sector in the first sector part but containing different sector data.

Dependencies are inferred from the claim text.