公开(公告)号：US20080259748A1

公开(公告)日：2008-10-23

申请号：US12104054

申请日：2008-04-16

申请人： Takeyuki MINAMIMOTO ,  Masakatsu KINOSHITA

发明人： Takeyuki MINAMIMOTO ,  Masakatsu KINOSHITA

IPC分类号： G11B7/00

CPC分类号： G11B7/0037 ,  G11B7/00736 ,  G11B7/08505

摘要： An optical disc includes a SPOKE potion for detecting a position in a circumferential direction of the optical disc, which is formed on an inner or outer circumferential side relative to a data recording area and visible image drawing area. A signal portion in which each signal is constituted by a pair of light nonreflecting portion and light reflecting portion is formed in the SPOKE portion. The signal portion includes a first signal portion in which signal widths of the nonreflecting portion and reflecting portion are the same and a second signal portion in which the signal widths of the nonreflecting portion and reflecting portion are changed.

摘要翻译： 光盘包括用于检测相对于数据记录区域和可见图像绘制区域形成在内周侧或外周侧的光盘圆周方向上的位置的SPOKE药液。 每个信号由一对光不反射部分和光反射部分构成的信号部分形成在SPOKE部分中。 信号部分包括其中非反射部分和反射部分的信号宽度相同的第一信号部分和不反射部分和反射部分的信号宽度改变的第二信号部分。