Patent ID: 7420896

Claim:
An information recording apparatus comprising: a detection unit configured to detect a manufacturing error unique to an information storage medium; a transmission unit configured to transmit the manufacturing error detected by the detection unit to an external apparatus; a reception unit configured to receive data indicating a recording capacity of the information storage medium which is calculated by the external apparatus on the basis of the manufacturing error transmitted from the transmission unit; and a recording control unit configured to determine whether first recording target data is recordable based on the data received by the reception unit, to request the first recording target data of the external apparatus based on a result of the determination, to record, on the information storage medium, first recording data generated from the first recording target data, to compare an amount of the first recording data with the recording capacity, to request second recording target data of the external apparatus when lack of recording capacity is not estimated from a result of the comparison, to record, on the information storage medium, second recording data generated from the second recording target data, and to limit a request for the second recording target data when the lack of recording capacity is estimated from the result of the comparison, wherein the detection unit controls a light beam to trace a plurality of regions with different radial distances on the information storage medium, samples focusing error signals from the plurality of regions, generates a plurality of focusing control signals based on the plurality of focusing error signals, detects a plurality of DC bias components based on the focusing control signals, and detects a disc tilt amount of an optical axis with respect to each of the plurality of regions based on the difference between the DC bias components, the transmission unit transmits the disc tilt amount detected by the detection unit to the external apparatus, and the reception unit receives the recordable capacity which is calculated by the external apparatus on the basis of the disc tilt amount.