发明申请
- 专利标题： OPTICAL DISC APPARATUS AND DEFOCUS CORRECTING METHOD
- 专利标题（中）： 光盘装置和偏心校正方法
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申请号： US13349407申请日： 2012-01-12
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公开(公告)号： US20120106307A1公开(公告)日： 2012-05-03
- 发明人: Yoshinori ISHIKAWA , Gohshi Jin
- 申请人： Yoshinori ISHIKAWA , Gohshi Jin
- 申请人地址： JP Tokyo JP Tokyo
- 专利权人： Hitachi Consumer Electronics Co., Ltd.,Hitachi-LG Data Storage, Inc.
- 当前专利权人： Hitachi Consumer Electronics Co., Ltd.,Hitachi-LG Data Storage, Inc.
- 当前专利权人地址： JP Tokyo JP Tokyo
- 优先权： JPJP2009-277141 20091207
- 主分类号： G11B7/1392
- IPC分类号： G11B7/1392 ; G11B7/0045
摘要：
An optical disc apparatus in which a bias of a focusing error signal is changed to a value according to a recording power at timing corresponding to a predetermined address position before starting the recording and a defocus of an opposite polarity is preliminarily caused so as to set off a defocus which occurs at the start of the recording.
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