发明名称 |
METHOD OF MECHANICAL SHOCK DETECTION AND METHOD AND APPARATUS FOR RECORDING DATA ONTO AN OPTICAL DISC |
摘要 |
A method for detecting a mechanical shock affecting on optical disc drive based on using the Focus Error (FE) and/or the Tracking Error (TE) servo-loop signals. An shock detection signal is generated as weighted time-integral of the servo loop signal, for example by using the integral signal of the PID controller of the servo loop, or a low pass filter, or digital integration by a Digital Signal Processor (DSP). A shock is considered to be detected if the shock detection signal exceeds a threshold value. A method for recording data onto an optical disc and the corresponding optical disc drive are also disclosed. The shock signal is monitored real time and the recording is interrupted if a shock is detected. The recording is resumed by linking from the last recorded area when the shock signal becomes low again.
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申请公布号 |
US2009268569(A1) |
申请公布日期 |
2009.10.29 |
申请号 |
US20060911672 |
申请日期 |
2006.04.14 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS, N.V. |
发明人 |
STEVEN STEFAN HENDRIK GUILLAUME;MALIK OMAR SHAREEF;LOOIJMANS HENDRIKUS ALBERTUS JOHANNA;KNOORS BERT |
分类号 |
G11B20/10;G11B7/00 |
主分类号 |
G11B20/10 |
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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