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    • 8. 发明授权
    • Optical disk device having optical phase compensator
    • 具有光学相位补偿器的光盘装置
    • US5784347A
    • 1998-07-21
    • US597406
    • 1996-02-08
    • Harukazu MiyamotoTakeshi ShimanoHisataka SugiyamaMariko Umeda
    • Harukazu MiyamotoTakeshi ShimanoHisataka SugiyamaMariko Umeda
    • G11B11/105G11B7/00
    • G11B11/10595G11B11/10515G11B11/10543G11B11/10584
    • An optical disk device having a light source for emitting light, focusing optics for radiating and focusing the light onto an optical recording medium, a photo-detection system for photoelectrically transforming reflected light from the optical recording medium, a reproduction circuit for reproducing information recorded on the optical recording medium by using an electric signal from the photo-detection system, phase control optics for changing the phase of the reflected light, a readout control circuit for controlling the quantity of the phase change of the phase control optics, and a learning control circuit for calculating the optimum value of the phase change quantity by monitoring the output signal of the reproduction circuit while changing the quantity of the phase change by the readout control circuit. Thus, information can be reproduced from a recording medium having high recording density without crosstalk.
    • 一种具有用于发光的光源的光盘装置,用于将光发射并聚焦到光记录介质上的聚焦光学装置,用于对来自光记录介质的反射光进行光电转换的光检测系统,用于再现记录在 通过使用来自光检测系统的电信号的光记录介质,用于改变反射光的相位的相位控制光学器件,用于控制相位控制光学器件的相位变化量的读出控制电路和学习控制 电路,用于通过在通过读出控制电路改变相变量的同时监视再现电路的输出信号来计算相位变化量的最佳值。 因此,可以从没有串扰的高记录密度的记录介质再现信息。