Patent ID: 7606131

Claim:
A recording control method for recording additional data on a rewritable optical medium, comprising the steps of: recognizing a space area including space blocks in which physically continuous valid data is not written; determining a target space block in which target data is to be written later, out of the space blocks; and initiating a recording of the target data in the target space block, wherein if the target space block is full during the recording of the target data, the recording operation is terminated; and wherein the step of determining comprises the step of determining the target space block to be the smallest space block from the space blocks having a larger size than the size of the target data if the size of the target data to be recorded can be determined, and determining the target space block to be the space block having the largest size if the size of the target data to be recorded cannot be determined or if none of the space blocks are larger than the size of the target data.