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公开(公告)号:US20080298181A1
公开(公告)日:2008-12-04
申请号:US12128208
申请日:2008-05-28
申请人: Masashi Ueno , Teruyoshi Kogure
发明人: Masashi Ueno , Teruyoshi Kogure
IPC分类号: G11B7/00
CPC分类号: G11B7/0945 , G11B7/00736 , G11B7/0912 , G11B7/094 , G11B7/0941 , G11B7/1267
摘要: According to one embodiment, a control method, includes moving a pickup head to an adjustment position adjusting the quantity of adjustment of focus balance measuring the amplitude of an RF signal in the adjustment position adjusting the focus balance adjustment quantity and measuring the RG signal amplitude a plurality of times estimating the focus balance adjustment quantity at which the RF signal amplitude is maximized from the measured focus balance adjustment quantities and RF signal amplitude moving the pickup head to a different adjustment position estimating the focus balance adjustment quantity at which the RF signal amplitude is maximized in the different adjustment position by adjusting the focus balance adjustment quantity and measuring the RF signal amplitude a plurality of times and adjusting the focus balance adjustment quantity to the focus balance adjustment quantity estimated in the different adjustment position.
摘要翻译: 根据一个实施例,一种控制方法包括将拾取头移动到调节位置的调整位置的调整位置,调节聚焦平衡的调整量,在调节聚焦平衡调节量的调整位置中测量RF信号的幅度,并测量RG信号振幅a 从测量的聚焦平衡调节量估计RF信号幅度最大化的聚焦平衡调节量和将拾取头移动到不同调节位置的RF信号的多次,估计RF信号振幅为的聚焦平衡调节量 通过调整聚焦平衡调节量并且测量RF信号幅度多次并将焦点平衡调节量调整到在不同调节位置中估计的焦距平衡调节量,使不同调节位置最大化。