发明授权
- 专利标题: Optical pickup, optical disk drive device, optical information recording device, and optical information reproduction device
- 专利标题(中): 光学拾取器,光盘驱动装置,光学信息记录装置和光学信息再现装置
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申请号: US13521549申请日: 2011-01-12
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公开(公告)号: US08437239B2公开(公告)日: 2013-05-07
- 发明人: Keiichi Matsuzaki , Kousei Sano
- 申请人: Keiichi Matsuzaki , Kousei Sano
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2010-006592 20100115
- 国际申请: PCT/JP2011/000089 WO 20110112
- 国际公布: WO2011/086897 WO 20110721
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
An optical pickup, an optical disk drive device, an optical information recording device, and an optical information reproduction device in which a reproduction signal, a focus error signal, and a gap error signal can be detected with high accuracy when information is recorded/reproduced on/from an optical information medium having a plurality of information recording layers.
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