发明名称 |
Multi-layer optical recording medium and method for evaluating optical recording system |
摘要 |
A multi-layer optical recording medium in which an effect of an interlayer crosstalk can be accurately measured and a method for evaluating a recording system using the same are provided. The multi-layer optical recording medium has a signal intensity measuring region formed in advance such that each recording layer having an identical address is allowed to have a different reflectivity. A signal intensity variation occurring when data recorded on the signal intensity measuring region is reproduced is measured to obtain signal intensity variation information. The method calculates a coherence parameter m describing the coherence of a recording system from the signal intensity variation information and reflectivity information obtained at each of the recording layers without interference from the other recording layers.
|
申请公布号 |
EP1653454(A2) |
申请公布日期 |
2006.05.03 |
申请号 |
EP20050022904 |
申请日期 |
2005.10.20 |
申请人 |
TDK CORPORATION |
发明人 |
TSUKAGOSHI, TAKUYA;MISHIMA, KOJI;YOSHITOKU, DAISUKE |
分类号 |
G11B7/007;G11B7/24 |
主分类号 |
G11B7/007 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|