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    • 3. 发明专利
    • Optical disc apparatus and data writing method
    • 光盘设备和数据写入方法
    • JP2011150776A
    • 2011-08-04
    • JP2010278912
    • 2010-12-15
    • Panasonic Corpパナソニック株式会社
    • YUZUBA AKINORI
    • G11B19/28G11B7/004G11B19/20
    • G11B19/042G11B19/26G11B19/28
    • PROBLEM TO BE SOLVED: To provide an optical disc apparatus which changes a rotation speed of an optical disc when detecting resonance.
      SOLUTION: The optical disc apparatus executes both operations of writing data on the optical disc 10 and reading data recorded on the optical disc 10. The drive includes a motor 12 for rotating the optical disc 10, an optical pickup 14 for radiating an optical beam to the optical disc 10 and detecting reflected light from the optical disc 10, an evaluation section 16 for obtaining a distortion evaluation value of a signal waveform in the reflected light by detecting the reflected light from a data recording part on the optical disc 10 by the optical pickup 14 when rotating the optical disc 10 by the motor 12, and a controller 18 for changing the rotation number per unit time of the optical disc 10 if the variation of the distortion evaluation value during a single rotation of the optical disc 10 exceeds a threshold when rotating the optical disc 10 by the motor 12.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种当检测到谐振时改变光盘的旋转速度的光盘装置。 解决方案:光盘装置执行在光盘10上写入数据和读取记录在光盘10上的数据的两种操作。驱动器包括用于旋转光盘10的电动机12,用于辐射光盘10的光学拾取器14 光束到光盘10并检测来自光盘10的反射光;评估部分16,用于通过检测来自光盘10上的数据记录部分的反射光来获得反射光中的信号波形的失真评估值 通过光学拾取器14旋转光盘10时,如果在光盘10的单次旋转期间变形评估值的变化,则控制器18用于改变光盘10的每单位时间的旋转数 通过电动机12旋转光盘10时超过阈值。版权所有:(C)2011,JPO&INPIT