| 摘要 |
This invention provides a magnetic recording and reproducing device, having a recording media with a diagnostic area to which diagnostic data is written, and a computation unit having a program area which determines the possibility of erroneous reading of data read out from the recording media and a memory area which stores diagnostic data and a threshold value for the possibility of erroneous reading. The computation unit writes diagnostic data to the diagnostic area of the recording media, reads out diagnostic data written to the diagnostic area of the recording media a plurality of times with time intervals, determines the possibility of erroneous reading of the read-out diagnostic data upon each reading-out, and estimates whether the possibility of erroneous reading after a prescribed time has elapsed exceeds the threshold value based on a plurality of possibilities of erroneous reading and times of reading-out.
|
