Patent ID: 8274868
Filing Date: 2012-09-25
Classification: G11B

Abstract:
1. A recording/reproducing apparatus that transfers data with respect to an information recording medium, the apparatus comprising: a writing/reading unit configured to write data to and/or read data from the information recording medium, the information recording medium including an access control area, the access control area including an access control data block to store access control data, the access control data including common information regarding a corresponding predetermined function recognized by a compliant type of recording/reproducing apparatus, the access control data being set to allow a non compliant type of recording/reproducing apparatus that cannot recognize the predetermined function to control access to the information recording medium; and a control unit configured to control the writing/reading unit to write a predetermined value on an access control data identifier field in the access control data block to indicate that the access control data block is available to record an other access control data.