发明名称 |
Information recording and reproduction method and information recording and reproduction device |
摘要 |
The focus offset FE0 corresponding to minimum jitter is learned in advance. When performing spherical aberration adjustment for each disk, the spherical aberration is adjusted so that the jitter reaches a minimum, while maintaining the focus offset at FE0. The invention provides a method for performing high-precision adjustment of the focus offset and spherical aberration, even in the case of a disk which does not have data recorded on it.
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申请公布号 |
US7663985(B2) |
申请公布日期 |
2010.02.16 |
申请号 |
US20060333583 |
申请日期 |
2006.01.18 |
申请人 |
HITACHI, LTD.;HITACHI-LG DATA STORAGE, INC. |
发明人 |
KUROKAWA TAKAHIRO;KUDO HIROMI;MIYAMOTO HARUKAZU |
分类号 |
G11B7/00 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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