| 摘要 |
PROBLEM TO BE SOLVED: To provide a recording medium which does not require a complicated structure for an information-reproducing apparatus, and can prevent degradation in reproducing characteristics even when the reproducing operation is executed simultaneously to a plurality of tracks that are recorded with the cyber system. SOLUTION: In an optical disc where a digital data is recorded by changing an edge position at each pit PT which is formed in a plurality of pits in the constant period on the track T corresponding to the digital data to be recorded and the digital data recorded in a plurality of pits of a plurality of adjacent tracks T are optically detected simultaneously, the phase of the position of each pit PT within the pit train formed on the track T using each pit PT is inverted with each other between the adjacent tracks T. The digital data carried with the pit PT is reproduced by the RPP reproducing system or two-dimensional PRML reproducing system. |
