Aufzeichnungsmedium und Wiedergabeverfahren und Gerät für dieses Aufzeichnungsmedium

摘要

A recording medium at least having a first recording layer for recording the first infonnation and a second recording layer for recording the second information. A discriminating signal indicating the playback mode is recorded on at least one of the first and second recording layers provided on the recording medium. The discriminating signal indicates a first playback mode for respectively reproducing the first information recorded in the first recording layer and the second information recorded on the second recording layer, or a second playback mode for calculating the first information recorded in the first recording layer and the second information recorded in the second recording layer to generate playback signals. A reproducing method and apparatus for the recording medium are also provided for reproducing the recording medium.