Patent ID: 7673154

Claim:
A recording medium, comprising: an auxiliary region wherein no data can be re-recorded; a lead-in region; a recording region in which a plurality of pieces of information is recorded; and a lead-out region, wherein medium information is recorded in at least any one of said auxiliary region, said lead-in region, said recording region, and said lead-out region, said medium information including medium identification information used to authenticate the recording medium at a remote managing server over a communication network, and relevant information including a pattern identifying a subset of pieces of information as the only pieces that may be reproduced from the plurality of pieces of information recorded in the recording region, information used to decide whether said recording medium is an authentic recoding medium, information for controlling reproduction of information recorded on said recording medium, and information that indicates a classification of said recording medium, the classification indicating whether said recording medium cannot be recorded, can be recorded once, or can be recorded more than once.