| 摘要 |
<p>An optical disk recording method for superposing sub information by slightly displacing an edge of a recording mark by a small according to a random number series when main information is recorded by the optically readable recording mark. The method includes a series generation step for generating a first random number series and a second random number series different from the first random number series, a first displacement step for displacing the edge according to the first random number series, and a second displacement step for displacing the edge according to the second random number series.</p> |
