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    • 4. 发明申请
    • Information recording medium, information recording and reproducing apparatus and method for adjusting phase of recording track
    • 信息记录介质,信息记录和再现装置以及用于调节记录轨道相位的方法
    • US20060098564A1
    • 2006-05-11
    • US11052808
    • 2005-02-09
    • Toshinori SugiyamaReiji TamuraTamotsu IidaYoshikazu Mitsui
    • Toshinori SugiyamaReiji TamuraTamotsu IidaYoshikazu Mitsui
    • G11B7/24
    • G11B7/24082G11B7/0053
    • An information-recording medium of write once or rewritable type designed to have narrow tracks is provided, in which the wobble signal amplitude is scarcely fluctuated by crosstalk. The medium includes recording tracks formed in a spiral form and meandering at a predetermined wobble cycle T, and a plurality of zones constituting each of the recording tracks, each of the zones having a principal area formed to have a predetermined wobble phase. A relationship of T>80b holds between the wobble cycle T and a channel bit length b of recording data. The wobble phase of one of the recording tracks is adjusted so that an average phase difference d is d>π/2 between the wobble phase in the principal area in the zone and a wobble phase of an area in the recording track disposed adjacently on an inner circumferential side or an outer circumferential side of the principal area, in relation to all of the recording tracks disposed adjacently in the radial direction.
    • 提供设计成具有窄轨迹的一次写入或可重写类型的信息记录介质,其中摆动信号幅度几乎不会由于串扰而波动。 介质包括以螺旋形式形成的记录轨道,并且以预定的摆动周期T曲折,以及构成每个记录轨道的多个区域,每个区域具有形成为具有预定摆动相位的主区域。 在摆动周期T和记录数据的通道位长度b之间保持T> 80b的关系。 调整记录轨道之一的摆动相位,使得平均相位差d在该区域中的主要区域中的摆动相位和相邻设置的记录轨道中的区域的摆动相位之间的d>π/ 2 相对于在径向方向上相邻设置的所有记录轨道,主区域的内周侧或外周侧。