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公开(公告)号:US20100182881A1
公开(公告)日:2010-07-22
申请号:US12667025
申请日:2008-05-16
申请人: Masato Asano , Kyogo Masaki , Yasuaki Murakawa
发明人: Masato Asano , Kyogo Masaki , Yasuaki Murakawa
IPC分类号: G11B7/00
CPC分类号: G11B7/0941 , G11B7/08517 , G11B7/0953
摘要: An optical disk signal processing unit (200) performs tracking control to control a position of a converging lens (103) of an optical pickup (100) based on a tracking error signal, and a track jump operation to move the converging lens (103) of the optical pickup (100) in a radial direction of an optical disk (500) while the tracking control is stopped. A gain-increase computation section (209) obtains an amount of increase in a loop gain of a tracking control system based on a velocity of eccentricity of the optical disk (500) at the time of the track jump. After the track jump operation, the tracking control is performed in a situation where the loop gain of the tracking control system has been increased by the amount of increase obtained by the gain-increase computation section (209).
摘要翻译: 光盘信号处理单元(200)执行跟踪控制,以基于跟踪误差信号控制光学拾取器(100)的会聚透镜(103)的位置,以及轨迹跳跃操作以移动会聚透镜(103) 在光盘(500)的径向方向上停止跟踪控制。 增益计算部(209)基于轨道跳跃时的光盘(500)的偏心速度,求出追踪控制系统的环路增益的增加量。 在轨道跳转操作之后,在跟踪控制系统的环路增益增加增益增加计算部分(209)获得的增加量的情况下进行跟踪控制。