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High-speed focus pull-in controllers for adaptively responding to disk surface vibration of an optical disk device and focus control methods thereof
High-speed focus pull-in controllers for adaptively responding to disk surface vibration of an optical disk device and focus control methods thereof
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机译:用于自适应地响应光盘设备的盘表面振动的高速聚焦引入控制器及其聚焦控制方法
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摘要
Upper and lower limit values of disk surface vibration are detected and stored per a predetermined time while a signal is reproduced from an optical disk device and, if focus on the disk deviates from a focus allowable range initially set, a focus repull-in operation is performed with reference to the upper and lower limit surface vibration values stored previously.
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