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    • 41. 发明授权
    • Optical recording medium having auxiliary information and reference clock
    • 具有辅助信息和参考时钟的光记录介质
    • US08179773B2
    • 2012-05-15
    • US13010212
    • 2011-01-20
    • Tetsuya KondoKenji Oishi
    • Tetsuya KondoKenji Oishi
    • G11B7/24
    • G11B7/24097G11B5/855G11B7/00455G11B7/00736G11B7/24012G11B7/24079G11B7/24082G11B11/10578G11B11/10584
    • An information recording medium is at least composed of a substrate having a microscopic pattern constituted by a continuous substrate of grooves formed with a groove portion and a land portion alternately, a recording layer formed on the microscopic pattern for recording information, and a light transmitting layer formed on the recording layer. The microscopic pattern is formed with satisfying a relation of P≦λ/NA, wherein P is a pitch of the land portion or the groove portion, λ is a wavelength of reproducing light for reproducing the recording layer, and NA is a numerical aperture of an objective lens. The land portion is formed with wobbling so as to be parallel with each other for both sidewalls of the land portion. An auxiliary information based on data used supplementally when recording the information and a reference clock based on a clock used for controlling a recording speed when recording the information is recorded alternately. Information is recorded in the recording layer corresponding to only a land portion by at least either one change of reflectivity difference and refractive index difference in the recording layer so as to be more than 5% for reflectivity and so as to be more than 0.4 for modulated amplitude of signal recording.
    • 信息记录介质至少由具有由形成有凹槽部分和平台部分的沟槽的连续基板构成的微观图案的基板组成,在用于记录信息的微观图案上形成的记录层和透光层 形成在记录层上。 形成微小图案,其满足P< llE;λ/ NA的关系,其中P是脊部或凹槽部分的间距,λ是用于再现记录层的再现光的波长,NA是数字孔径 物镜 为了陆地部分的两个侧壁,地面部分以摆动形成为彼此平行。 基于用于记录信息时用于控制记录速度的时钟记录信息时的补充信息和辅助信息被交替记录。 信息仅通过记录层中的反射率差和折射率差的至少一个变化而仅对应于陆部的记录层中记录,以便反射率大于5%,并且对于调制 信号记录幅度。