Patent ID: 8375246

Claim:
An information recording apparatus for recording first low-quality recorded data comprising an error rate equal to or higher than a first error rate in a free space upon finalization of a recording medium, comprising: a reader configured to read data from a recording area of the recording medium; a measurement module configured to measure an error rate of the recorded data of each predetermined data block; a detector configured to detect the first low-quality recorded data based on an error rate measurement result of the measurement module; and a hardware recorder configured to correct an error in the first low-quality recorded data, to record error-corrected data corresponding to the first low-quality recorded data at a spare recording position of the free space of the recording medium, and to record recording management information for managing an address of a recording position of the first low-quality recorded data and an address of the spare recording position of the error-corrected data in association with each other at a management data recording position of the free space, wherein the measurement module is configured to store a second error rate equal to or lower than the first error rate and to generate low-quality management information associating an address of a recording position of second low-quality recorded data comprising an error rate equal to or higher than the second error rate with the error rate of the second low-quality recorded data, and wherein the detector is configured to detect the second low-quality recorded data as the first low-quality recorded data, if the error rate of the second low-quality recorded data in the low-quality management information is not less than the first error rate.