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    • 10. 发明授权
    • Method for inspecting optical information recording medium, inspection apparatus, optical information recording medium and recording method
    • 检查光信息记录介质的方法,检查装置,光信息记录介质和记录方法
    • US08335143B2
    • 2012-12-18
    • US13204384
    • 2011-08-05
    • Atsushi NakamuraKenji FujiuneYasumori Hino
    • Atsushi NakamuraKenji FujiuneYasumori Hino
    • G11B7/00
    • G11B20/10009G11B20/10046G11B20/1816G11B2220/218G11B2220/2541
    • A method for inspecting an optical information storage medium includes the steps of: irradiating the storage medium with a laser beam and rotating the medium by a constant linear velocity control technique by reference to the radial location at which the laser beam forms a spot on the medium; changing the rotational velocities according to the radial location on the medium between at least two linear velocities that include a first linear velocity Lv1 and a second linear velocity Lv2 higher than the first linear velocity Lv1; generating a focus error signal and/or a tracking error signal based on the light reflected from the medium; performing a focus control and/or a tracking control on the laser beam that irradiates the medium based on the focus and/or tracking error signal(s); and passing the branched outputs of control loops for the focus and/or tracking error signal(s) through predetermined types of frequency band-elimination filters for the focus and/or tracking error signal(s) to obtain residual errors of the focus and/or tracking error signal(s) and comparing the residual errors to predetermined reference values.
    • 一种用于检查光学信息存储介质的方法包括以下步骤:通过参考激光束在介质上形成点的径向位置,通过恒定的线速度控制技术照射存储介质和激光介质 ; 根据包括第一线速度Lv1和高于第一线速度Lv1的第二线速度Lv2的至少两个线性速度,根据介质上的径向位置改变旋转速度; 基于从介质反射的光产生聚焦误差信号和/或跟踪误差信号; 对基于焦点和/或跟踪误差信号照射介质的激光束进行聚焦控制和/或跟踪控制; 以及通过用于焦点和/或跟踪误差信号的预定类型的频带滤波器使用于聚焦和/或跟踪误差信号的控制回路的分支输出通过,以获得焦点和/ 或跟踪误差信号,并将剩余误差与预定参考值进行比较。