Disc-shaped recording medium, disc driving device and disc producing method
    6.
    发明授权
    Disc-shaped recording medium, disc driving device and disc producing method 有权
    碟形记录介质,盘驱动装置和盘制造方法

    公开(公告)号:US07221644B2

    公开(公告)日:2007-05-22

    申请号:US10515191

    申请日:2003-05-22

    IPC分类号: G11B7/24

    CPC分类号: G11B7/24038 G11B7/00736

    摘要: With the disc-shaped recording medium, or the disc manufacturing method according to the present invention, for both the single-layer disc and the multi-layer disc, a recording layer L0, which is to be the first layer, is at the same distance, along the direction of disc thickness, from the surface of the cover layer CVLs on which falls the laser light. For the multi-layer disc, the second layer L1 and the following layer(s) are formed at the locations which are closer to the cover layer CVLs than the first layer L0. Management information may be recorded by mobbling grooves, each layermay have tert areas, defect information, a replacement area. Thus, it is possible to improve compatibility, reliability and accessibility between a single-layer disc and a multi-layer disc. The spherical aberration for the recording/reproducing light may be controlled with respect to the selected layer.

    摘要翻译: 根据本发明的盘形记录介质或盘制造方法,对于单层盘和多层盘两者,作为第一层的记录层L 0处于 沿着光盘厚度的方向与从其上落下的激光的覆盖层CVL的表面相同的距离。 对于多层盘,第二层L 1和下一层形成在比第一层L 0更靠近覆盖层CVL的位置处。 管理信息可以通过移动槽记录,每个铺位都有叔区,缺陷信息,替换区。 因此,可以提高单层盘和多层盘之间的兼容性,可靠性和可访问性。 可以相对于所选择的层来控制记录/再现光的球面像差。