公开(公告)号：US07426164B2

公开(公告)日：2008-09-16

申请号：US10660773

申请日：2003-09-12

申请人： Kouichi Tada ,  Mitutaka Yamaguti

发明人： Kouichi Tada ,  Mitutaka Yamaguti

IPC分类号： G11B27/36

CPC分类号： G11B7/24082 ,  G11B7/0053 ,  G11B7/00745 ,  G11B2007/0006

摘要： A disk apparatus is for a disk, and a DVD-RW or a DVD+RW can be mounted as the disk. For example, a wobble signal is detected on the basis of a laser beam reflected by a recording surface of the disk. A CPU determines whether a cycle of the wobble signal (wobble cycle) is 32 times or 186 times as long as a data cycle on the basis of a detection result of a detecting circuit. Then, when the wobble cycle is 186 times as long as the data cycle, the disk kind is identified as the DVD-RW, and when the wobble cycle is 32 times as long as the data cycle, the disk kind is identified as the DVD+RW.

摘要翻译： 磁盘装置用于磁盘，DVD-RW或DVD + RW可以作为磁盘安装。 例如，基于由盘的记录表面反射的激光束来检测摆动信号。 基于检测电路的检测结果，CPU确定摆动信号（摆动周期）的周期是数据周期的32倍或186倍。 然后，当摆动周期是数据周期的186倍时，磁盘种类被识别为DVD-RW，当摆动周期是数据周期的32倍时，磁盘种类被识别为DVD + RW。