Patent ID: 8472294

Claim:
An information reproduction device, comprising: a reproduction unit which reproduces record data recorded on an information-recording medium including a data area for recording the record data, and a defect control area for recording defect information of the data area; a storage unit which stores the defect information; and a reduction unit which reduces a storage area of the storage unit which is used for storing the defect information, wherein the reduction unit includes: a checking unit which checks whether the record data is first information or not, a determination unit which determines whether the defect information is of the first information or not, and a main unit which if it is determined that the defect information is of the first information, allows the storage area of the defect information to be used as an area for storing information other than defect information to reduce the storage area of the storage unit which is used for storing defect information, and wherein the first information is AV data.