作者: Masahiro Kato , Seiro Oshima , Takao Tagiri , Eiji Muramatsu , Atsushi Yamaguchi
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摘要: The present invention provides an optical recording medium, in which levels of wobble signals extracted from a area formed snakily, reproduction exclusive and impossible are maintained constant. On DVD-RW, groove tracks snakily on section information is recorded, pit strings where plurality phase pits wave arranged the prevent illegal copying. respective areas, depths (groove depths), duty wobbling amplitudes set according to predetermined conditions so that output based can be constant areas. As result, synchronous control made accurately at time on/from DVD-RW.