| 摘要 |
A method for reproducing contents of an information recording medium, having at least one data zone, is disclosed, wherein a determination is made as to whether the entirety of a requested reproduction zone included in the data zone of the information recording medium contains data, or at least a part thereof belongs to a non-recorded zone at a predetermined timing on or after a point in time when the reproduction request is made. Then, when a reproduction request is made for a reproduction zone including such non-recorded zone, it is subsequently determined at the predetermined timing that the non-recorded zone is present in the reproduction zone, and an error process starts.
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