发明申请
- 专利标题: OPTICAL DISK APPARATUS
- 专利标题(中): 光盘设备
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申请号: US12776480申请日: 2010-05-10
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公开(公告)号: US20110063957A1公开(公告)日: 2011-03-17
- 发明人: Fumio ISSHIKI , Hideki Maruyama
- 申请人: Fumio ISSHIKI , Hideki Maruyama
- 专利权人: Hitachi Media Electronics Co., Ltd.
- 当前专利权人: Hitachi Media Electronics Co., Ltd.
- 优先权: JP2009-214014 20090916
- 主分类号: G11B20/18
- IPC分类号: G11B20/18
摘要:
In an optical disk apparatus, an optical pickup includes an actuator for driving an object lens, and a sensed signal output part for making it possible to generate a tracking error signal and a lens error signal by addition/subtraction, and a signal processor includes a servo signal generator for generating a tracking error signal and a lens error signal on the basis of a signal supplied from the sensed signal output part, and a tracking offset correction quantity signal generator supplied with the lens error signal to output a tracking offset correction quantity signal. DC (direct current) offset correction is conducted by conducting addition/subtraction between the tracking error signal and both the lens error signal and the tracking offset correction quantity signal.
公开/授权文献
- US08121000B2 Optical disk apparatus 公开/授权日:2012-02-21