发明授权
- 专利标题: Optical disc apparatus and correction servo control signal generation method
- 专利标题(中): 光盘装置和校正伺服控制信号产生方法
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申请号: US12472667申请日: 2009-05-27
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公开(公告)号: US08040764B2公开(公告)日: 2011-10-18
- 发明人: Hirotaka Miyamoto , Kimihiro Saito , Kunihiko Hayashi
- 申请人: Hirotaka Miyamoto , Kimihiro Saito , Kunihiko Hayashi
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Wolf, Greenfield & Sacks, P.C.
- 优先权: JP2008-143351 20080530
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
An optical disc apparatus includes an objective lens that converges a light beam emitted from a light source and irradiates an optical disc having recording marks formed in a uniform recording layer with it, a detection signal generation section that receives a return light beam from the recording mark and generates a detection signal, a servo control signal generation section that generates a servo control signal representing relative displacement between the recording mark and a focus of the light beam from the detection signal and a servo signal correction section that generates a correction servo control signal by connecting peaks or neighborhoods of the peaks of servo control signals, the peaks being produced according to the recording marks.