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    • 10. 发明申请
    • OPTICAL DISC
    • 光盘
    • US20100142361A1
    • 2010-06-10
    • US12532837
    • 2007-03-30
    • Kazuo KurodaEiji MuramatsuKazutoshi Kitano
    • Kazuo KurodaEiji MuramatsuKazutoshi Kitano
    • G11B7/24
    • G11B7/24085G11B7/14
    • An optical disc (100) from which a plurality of pieces of information recorded along a track (9) by irradiating light that moves above the track relatively are reproduced in parallel. The optical disc has a disc substrate (1), and a recording layer (2) formed thereon. On the recording layer, a track is defined concentrically and two pit rows for carrying the plurality of pieces of information independently from each other are arranged along the track on the opposite sides thereof. At a specific position where the two pit rows are in a predetermined mutual relation and the plurality of pieces of information read out by irradiating light cannot be distinguished, at least one of two pit rows is shifted by a predetermined distance in the radial direction of the disc substrate by having the track as reference. Consequently, recording capacity can be increased relatively easily.
    • 通过并行地再现通过照射在轨道上方的光而沿着轨道(9)记录的多条信息的光盘(100)。 光盘具有盘基片(1)和形成在其上的记录层(2)。 在记录层上,轨道被同心地定义,并且彼此独立地携带多条信息的两个凹坑行沿着其相对侧的轨道排列。 在两个凹坑列处于预定的相互关系的特定位置处,并且不能区分通过照射光读出的多条信息,两个凹坑行中的至少一个在径向方向上偏移预定距离 通过使轨道作为参考来实现。 因此,可以相对容易地增加记录容量。