发明授权
- 专利标题： Optical disk drive for scanning an optical disk with a scanning velocity and method for scanning an optical disk with a scanning velocity
- 专利标题（中）： 用于以扫描速度扫描光盘的光盘驱动器和用于以扫描速度扫描光盘的方法
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申请号： US12141688申请日： 2008-06-18
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公开(公告)号： US08059501B2公开(公告)日： 2011-11-15
- 发明人: Johannes Leopoldus Bakx , Antoon Dekker , Maarten Kuijper , Tony P. van Endert
- 申请人： Johannes Leopoldus Bakx , Antoon Dekker , Maarten Kuijper , Tony P. van Endert
- 申请人地址： TW Taipei
- 专利权人： Lite-On It Corporation
- 当前专利权人： Lite-On It Corporation
- 当前专利权人地址： TW Taipei
- 代理机构： Thomas, Kayden, Horstemeyer & Risley, LLP
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
An optical disk drive and a method for scanning an optical disk that includes a substantially circular track with a scanning velocity is provided. A servo control signal (SCS) is determined based on a servo error signal (SES). A first performance indicator (IND1) of the servo actuator is determined from at least one of the SES and SCS. IND1 is compared against a first pre-determined threshold (ITHR1), determining a first servo margin (MAR1). The scanning velocity is set in dependence on at least MAR1. In particular, scanning velocity is reduced when the first performance indicator exceeds the first pre-determined threshold. Additionally or alternatively, a bandwidth of control of the servo actuator can be adjusted in dependence on at least one of a second servo margin, determined from at least one of SES and SCS, and a third servo margin, associated with a mark quality determined from a central aperture signal.
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