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1. 发明授权

US06700844B2 Method and apparatus for measuring the eccentricity of an optical disk 失效
标题翻译：用于测量光盘偏心度的方法和装置
公开(公告)号：US06700844B2
公开(公告)日：2004-03-02
申请号：US09758364
申请日：2001-01-12
申请人： Hyeung Chull Na
发明人： Hyeung Chull Na
IPC分类号： G11B390
CPC分类号： G11B7/0953 , G11B7/0941 , G11B7/0945
摘要： A method and apparatus for measuring the eccentricity of an optical disk. The method for measuring the eccentricity of an optical disk in accordance with the present invention comprises the steps of activating tracking servo while the optical disk is rotating, detecting the center value of tracking error signal and setting the center value as a reference value, and detecting the eccentricity of the optical disk by comparing the center value and the tracking error signal received right after the reference value is set. The method in accordance with the present invention precisely measures the eccentricity of an optical disk and adjusts focus and track servo gains and disk rotation speed based upon the measured disk eccentricity, which provides stable data reproduction performance.
摘要翻译：一种用于测量光盘的偏心度的方法和装置。根据本发明的用于测量光盘的偏心率的方法包括以下步骤：在光盘旋转时激活跟踪伺服，检测跟踪误差信号的中心值并将中心值设置为参考值，并且检测通过比较设定参考值之后的中心值和跟踪误差信号，光盘的偏心度。根据本发明的方法精确地测量光盘的偏心率，并且基于所测量的盘偏心率来调节聚焦并跟踪伺服增益和盘旋转速度，这提供了稳定的数据再现性能。

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