公开(公告)号：US20080144482A1

公开(公告)日：2008-06-19

申请号：US12039230

申请日：2008-02-28

申请人： Du-Seop YOON ,  Kyung-geun Lee ,  Byoung-bo Choi ,  Jae-seong Shim

发明人： Du-Seop YOON ,  Kyung-geun Lee ,  Byoung-bo Choi ,  Jae-seong Shim

IPC分类号： G11B7/24

CPC分类号： G11B27/24 ,  G11B7/0037 ,  G11B7/0053 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/08511 ,  G11B7/0953 ,  G11B7/24038 ,  G11B7/24082 ,  G11B20/1024 ,  G11B20/1217 ,  G11B20/14 ,  G11B27/3027 ,  G11B2007/0013 ,  G11B2020/1239 ,  G11B2020/1287 ,  G11B2220/216 ,  G11B2220/235 ,  G11B2220/2562 ,  G11B2220/2575

摘要： An optical recording medium has a user data area and a lead-out area, wherein the user data area and the lead-out area each has grooves and lands formed thereon. Wobbles are formed on at least one lateral surface of grooves of the user data area and the lead-out area, and configured such that wobble characteristics are made different between the user data area and the lead-out area. Different types of wobbles are formed on the grooves of either the user data area or the lead-out area, thereby preventing an optical pickup that performs recording/reproduction from deviating from the user data area. Also, in a multi-layer optical recording medium, a whole area of a recording layer is configured to have a same condition, thereby preventing deterioration in reproduction and/or recording due to a difference in light power transmittance of another recording layer.