公开(公告)号：US20060077806A1

公开(公告)日：2006-04-13

申请号：US11289468

申请日：2005-11-30

申请人： Jin-Chuan Hsu ,  Ching-Ning Chiu

发明人： Jin-Chuan Hsu ,  Ching-Ning Chiu

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/0908

摘要： The present invention provides a method for calibrating focus positions of a pickup head. The pickup head is in a focus position of a predetermined distance from an optical recording medium for producing a recording light beam of a predetermined power for recording corresponding data onto the optical recording medium. A predetermined position adjustment procedure is performed to adjust the focus position of the pickup head during data recording. The procedure comprises the steps of sensing a reflected light beam from the optical recording medium by means of a sensor to generate a corresponding write RF signal; searching an extreme value of the write RF signal and obtain a target focus position corresponding to the searched extreme value; and adjusting the pickup head to the target focus position, so as to enable further data recording onto the optical recording medium by the pickup head in the target focus position.

摘要翻译： 本发明提供一种用于校准拾取头的对焦位置的方法。 拾取头处于与用于产生用于将相应数据记录到光学记录介质上的预定功率的记录光束的光学记录介质预定距离的聚焦位置。 执行预定位置调整程序以在数据记录期间调节拾取头的对焦位置。 该过程包括以下步骤：通过传感器感测来自光学记录介质的反射光束，以产生对应的写入RF信号; 搜索写RF信号的极值，并获得与所搜索的极值对应的目标对焦位置; 并且将拾取头调整到目标对焦位置，以便能够通过目标对焦位置中的拾取头进一步将数据记录到光学记录介质上。