Patent ID: 7549176
Filing Date: 2009-06-16
Classification: G11B

Abstract:
1. A recording medium configured to be accessed by a recording/reproducing apparatus, comprising: an encoding key; encoded information that is encoded using the encoding key; and at least two usage right files each having usage rights corresponding to a respective one of two physically distinct media types, wherein the encoding key, the encoded information, and the at least two usage right files are recorded in predetermined regions of the recording medium, and a physically distinct property of the recording medium is detected by the presence of eight-to-fourteen modulation (EFM) data in a region further towards the center than the table of content (TOC) in the lead-in area by the recording/reproducing apparatus for determining which of the two physically distinct media types corresponds to the recording medium, the recording/reproducing apparatus selecting the corresponding usage right file of the at least two usage right files to manage reproduction of the encoded information.