Patent ID: 7437390

Claim:
An information recording medium comprising a data recording area, wherein: a lead-in area and a volume space are allocated in the data recording area in advance; an advanced VAT structure area is allocated in the volume space; an advanced VAT for managing a correspondence between a virtual address indicating an address in a virtual address space and a logical address indicating an address in a logical address space is recorded in the advanced VAT structure area; basic structure information indicating a file structure is assigned at a specific virtual address in the advanced VAT, the basic structure information being indispensable for searching all files recorded in the information recording medium; specific application structure information indicating a file structure is assigned in a specific virtual address range in the advanced VAT, the specific application structure information being indispensable for searching an AVfile recorded in the information recording medium; and the basic structure information and the specific application structure information are arranged within one sector from a head of the advanced VAT.