发明授权
- 专利标题: Spherical aberration correction control device and optical disc apparatus
- 专利标题(中): 球面像差校正控制装置和光盘装置
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申请号: US10752810申请日: 2004-01-07
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公开(公告)号: US07239595B2公开(公告)日: 2007-07-03
- 发明人: Yuuichi Kuze , Katsuya Watanabe , Kenji Fujiune
- 申请人: Yuuichi Kuze , Katsuya Watanabe , Kenji Fujiune
- 申请人地址: JP Kadoma
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JP Kadoma
- 代理机构: Renner, Otto, Boisselle & Sklar, LLP.
- 优先权: JP2003-025597 20030203
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
A spherical aberration correction control device for controlling a spherical aberration correction section for correcting a spherical aberration of an optical beam irradiating an optical disc. The spherical aberration correction control device includes a spherical aberration control signal generation section for generating a spherical aberration control signal; and an output section for outputting the spherical aberration control signal to the spherical aberration correction section. A correction amount by which the spherical aberration is corrected is changed by the spherical aberration correction section in accordance with components of the spherical aberration control signal. The spherical aberration control signal generation section generates the spherical aberration control signal such that a sum of correction amounts corresponding to the respective components of the spherical aberration control signal becomes substantially zero with respect to a target correction amount.