发明授权
- 专利标题： Optical disc device and focus control method
- 专利标题（中）： 光盘装置和对焦控制方法
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申请号： US12362927申请日： 2009-01-30
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公开(公告)号： US07978569B2公开(公告)日： 2011-07-12
- 发明人: Hirotaka Miyamoto , Kimihiro Saito , Toshihiro Horigome , Kunihiko Hayashi
- 申请人： Hirotaka Miyamoto , Kimihiro Saito , Toshihiro Horigome , 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： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2008-078889 20080325
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
A focus control section first performs a reference focus control process in which a reference optical beam is focused on a reference layer of an optical disc according to the result of receiving a reference reflection optical beam, and then switches from the reference focus control process to an information focus control process in which an information optical beam is focused on a mark layer of the optical disc according to the result of receiving an information reflection optical beam.
公开/授权文献
- US20090245065A1 OPTICAL DISC DEVICE AND FOCUS CONTROL METHOD 公开/授权日：2009-10-01
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