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    • 38. 发明授权
    • Optical recording medium having groove and land tracks, and method of manufacturing the same
    • 具有凹槽和脊迹的光记录介质及其制造方法
    • US06535477B1
    • 2003-03-18
    • US09598291
    • 2000-06-21
    • Eiji MuramatsuToshio SuzukiMasahiro KatoShoji Taniguchi
    • Eiji MuramatsuToshio SuzukiMasahiro KatoShoji Taniguchi
    • G11B724
    • G11B7/00718G11B7/0037G11B7/007G11B7/26G11B20/1217
    • At least a portion of groove tracks in a information-data recording region of an optical recording medium comprises a plurality of groove portions separated by groove-absent portions in a rotational direction of the optical recording medium, each of the mark portions or each of the space portions includes one of the groove-absent portions. At least one of two groove tracks adjacent to prepit train, which is formed in land tracks, has a continuous groove portion or a groove-absent portion extending at least from a leading end to a trailing end of at least one prepit included in the prepit train in a rotational direction of the optical recording medium. The frequency band for separation of the groove tracks includes at least a portion of a frequency band of a modulated recording signal for recording information data on the optical recording medium.
    • 在光学记录介质的信息数据记录区域中的凹槽轨道的至少一部分包括沿着光学记录介质的旋转方向上的凹槽部分分开的多个凹槽部分,每个标记部分或每个 空间部分包括凹槽部分之一。 与凹坑轨迹中形成的预凹坑列相邻的两个凹槽轨道中的至少一个具有连续的凹槽部分或凹槽缺失部分,其至少从包括在预制凹坑中的至少一个预凹坑的前端到后端延伸 沿着光记录介质的旋转方向。 用于分离凹槽轨道的频带包括用于在光学记录介质上记录信息数据的调制记录信号的频带的至少一部分。