| 摘要 |
<p>In a data recording/reproducing apparatus (1) which can record/reproduce digital data, since a parity check code (C1, C2) is added to data at the time of recording the data (D), the original data (D) can be reproduced by error correction even though part of the data is lost at the time of reproducing. In the present invention, in order to improve reliability of data (D) still more, the data (D) immediately after recorded is read and the number of errors in it is detected by means of its parity check code (C1,C2) at the time of recording data (D), and in case that the number of errors in the data is equal to or greater than a predetermined reference value, the data is re-recorded. Therefore, by setting the reference value at a value less than the maximum number of errors which can be corrected by means of parity check codes (C1,C2), data is also re-recorded which has apprehension that it cannot be corrected due to increase of the number of errors in it caused by deterioration of its recording state owing to repetition of a reproducing operation on the like. In this way, reliability of the data recording/reproducing apparatus (1) can be remarkably improved.</p> |
