公开(公告)号：EP1174864A3

公开(公告)日：2004-06-30

申请号：EP01305734.4

申请日：2001-07-02

申请人： Alpine Electronics, Inc.

发明人： Kumagami, Yusuke, c/o Alpine Electronics, Inc. ,  Yamamoto, Hiromichi, c/o Alpine Electronics, Inc.

IPC分类号： G11B7/085

CPC分类号： G11B7/08541 ,  G11B7/08529

摘要： A memory (80) stores data concerning errors or differences between commanded number of tracks to be traversed and the number of tracks actually traversed by an optical pickup (20) actuated by a servo controller (30) in accordance with this command. A traversed track number computing unit (62) computes the number of tracks to be traversed by the optical pickup (20) when the same is moved to a track which corresponds to the address where the data to be read is stored. A correction processing unit (64) performs a predetermined correction processing on the computed number of tracks to be traversed, taking into consideration the error data stored in the memory (80).

摘要翻译： 存储器（80）根据该命令存储有关要经过的指令数目的轨迹与由伺服控制器（30）致动的光学拾取器（20）实际行进的轨道数目之间的误差或差异的数据。 经过轨迹数计算单元（62）计算当光学拾取器（20）移动到与存储要读取的数据的地址相对应的轨道时要由光学拾取器（20）穿过的轨道的数量。 考虑到存储在存储器（80）中的误差数据，校正处理单元（64）对所计算出的轨迹数进行预定的校正处理。