发明名称 |
OPTICAL DISC DEVICE AND DATA REPRODUCTION METHOD FOR THE SAME |
摘要 |
Prevention of deletion of data in an unintended recording layer of an optical disc is ensured even when servo deviation occurs while controlling data reproduction. A light source outputs a light beam with light intensity according to a driving current on which a high frequency signal is superimposed. The light beam is collected on a recording layer of an optical disc. As triggered by detection of servo deviation during data reproduction, a light intensity controller adjusts a superimposed amount of the high frequency signal in the driving current to suit to a specific recording layer with the lowest reproduction tolerance in the optical disc and thereby controls the light intensity of the light beam output from the light source.
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申请公布号 |
US2011158063(A1) |
申请公布日期 |
2011.06.30 |
申请号 |
US20100952534 |
申请日期 |
2010.11.23 |
申请人 |
MINAMIGUCHI SHUICHI;NISHIMURA HAJIME;SAKAI HIROHARU |
发明人 |
MINAMIGUCHI SHUICHI;NISHIMURA HAJIME;SAKAI HIROHARU |
分类号 |
G11B7/125 |
主分类号 |
G11B7/125 |
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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