INFORMATION RECORDING MEDIUM, INFORMATION REPRODUCING APPARATUS, MANAGEMENT INFORMATION REPRODUCING METHOD, INFORMATION RECORDING/REPRODUCING APPARATUS AND IDENTIFICATION INFORMATION REPRODUCING/RECORDING METHOD

摘要

According to one embodiment, in an information recording medium including a plurality of data layers, at least one pre-format area is provided on each of the data layers and is circumferentially divided into a plurality of segments. Management information including data layer identification information for identifying the data layers is recorded in at least one of the segments in each of the data layers, using the marks include BCA marks extending radially uniformly. On adjacent ones of the data layers, the BCA marks associated with the management information are recorded in differently positioned segments which are not opposed to each other.

主权项

1. An information recording medium for optically storing data, which has a radial direction, comprising:
a plurality of stacked data layers each having pre-format areas which are circumferentially divided into a plurality of segments, the segments on one of the data layers being opposed to the segments on adjacent one of the data layers, wherein management information including identification information for identifying the data layers is recorded as a sequence of marks in at least one of the segments in each of the data layers, the marks are uniformly extended in a radial direction of the recording medium, and the sequences of marks on the adjacent ones of the data layers are separately allocated to the segments which are not opposed to each other on the adjacent ones of the data layers; and at least one servo layer storing segment address information for specifying the segments on which the sequence of marks are allocated.