| 摘要 |
<p>A read-back signal evaluation device is provided with: a pattern detection unit (101) which extracts, from a binarized signal, a specific state transition pattern which has a possibility of causing a bit error; a difference metric computing unit (102) which calculates a difference metric based on the binarized signal of the extracted state transition pattern; an error computing unit (116) which calculates an error rate predicted based on an integrated value integrated by an integrating unit (125), a count value counted by a pattern counting unit (124), an integrated value integrated by an integrating unit (105), and a count value counted by a pattern counting unit (104); and a standard deviation computing unit (120) which calculates a standard deviation based on the calculated error rate.</p> |
