发明授权
US07336576B2 Optical disk medium and optical disk recording/reproducing apparatus utilizing tilt detection areas having special marks 失效
使用具有特殊标记的倾斜检测区域的光盘介质和光盘记录/再现设备

Optical disk medium and optical disk recording/reproducing apparatus utilizing tilt detection areas having special marks
摘要:
In an optical disk medium, land recording tracks (1) are coupled by first and second coupling portions (3 and 4) at a particular radial position to form a tilt detecting mark SM.
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