| 摘要 |
This invention relates to an optical disc recording apparatus, an optical disc recording method, and an optical disc, and the present invention is applied to, for example, apparatus for recording on a compact disc, compact discs, and compact disc players, and sub-data strings are recorded so that the main data strings is reproducible by an optical pickup for reproducing the main data string and the main data strings. are protected from being copied illegally without any adverse effect on reproduction of the pit-and-land main data strings The sub-data string ED is recorded by locally changing the reflectance of the reflection film in the form of irregularity such as pit or mark at the timing which does not affect the position information of the edge.
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