发明名称 |
Optical disk apparatus |
摘要 |
An optical disk apparatus includes: a light irradiator operable to converge a light beam and irradiate an information carrier with the converged light beam; a moving means operable to move the light beam in a direction traversing a track formed on a surface of the information carrier; and a tracking controller operable to control the moving means to scan the track with the light beam. The tracking controller includes a deviation detector operable to generate a detection signal, a tracking driving means operable to generate a driving signal, an integrator operable to integrate a magnitude of a signal corresponding to the driving signal over a predetermined time period and an abnormal state detector operable to detect an abnormal state of the moving means based on an output of the integrator.
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申请公布号 |
US2003227840(A1) |
申请公布日期 |
2003.12.11 |
申请号 |
US20030463368 |
申请日期 |
2003.06.17 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KISHIMOTO TAKASHI;YAMAMOTO TAKEHARU;FUJIUNE KENJI;WATANABE KATSUYA |
分类号 |
G11B7/00;G11B7/09;G11B7/095;(IPC1-7):G11B7/095 |
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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