发明名称 |
Optical head device, optical recording device, and optical recording method |
摘要 |
An object of the present invention is to acquire optimum recording characteristics of an optical recoding medium having multiple data layers, with respect to each of the multiple data layers without increasing learning time required for learning a relation between aberration amount and optimum recording compensation with respect to each of the multiple data layers. The present invention includes a wavefront converter which is driven in such a manner as to reduce the aberration amount detected by an aberration detector. An output controller holds learned data as to the relation between the driving amount of the wavefront converter and the output of a light source, and controls the output of the light source based on the driving amount of the wavefront converter and the learned data.
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申请公布号 |
US7342867(B2) |
申请公布日期 |
2008.03.11 |
申请号 |
US20040509097 |
申请日期 |
2004.09.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ITO TATSUO;SHIONO TERUHIRO;YAMAMOTO HIROAKI;NISHINO SEIJI |
分类号 |
G11B7/135;G11B7/00;G11B7/09;G11B7/125 |
主分类号 |
G11B7/135 |
代理机构 |
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地址 |
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