| 摘要 |
PROBLEM TO BE SOLVED: To provide an information recording medium and a method for recording and reproducing the same capable of surely protecting a copyright and surely detecting the regional positions and a layer by changing the side of a land in accordance with the case of including a discontinuous area, plural layers, the divided regions of an area or a region related with copyright information, etc., when address information or a frequency signal are formed as land pre-pits on one side of the land. SOLUTION: Concerning a guiding groove formed on a disk substrate and a frequency signal and/or an address signal recorded on one side (the first side, e.g.) of the guiding groove, the side surface of the guiding groove for recording the frequency signal or the address signal is changed depending on the region. |
