Patent ID: 7911896

Claim:
An apparatus for reproducing and/or recording from and/or to a write-once recording medium, the apparatus comprising: a pickup configured to read data from the write-once recording medium which comprises a temporary defect management area comprising bit maps, the bit maps providing to the apparatus information for distinguishing occupied data areas from unoccupied data areas, of a user data area of the write-once recording medium by representing the occupied and/or unoccupied areas with different values in the bit maps; and a controller configured to control the pickup: to read the data from the temporary defect management area; and to record predetermined data in an unoccupied area of the temporary defect management area, wherein the predetermined data is ‘OO h’ data, and wherein the temporary defect management area comprises temporary disc defect structure which comprises information on a location of an area in which the bit maps are recorded.