发明授权
US08437239B2 Optical pickup, optical disk drive device, optical information recording device, and optical information reproduction device 有权
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

  • 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
  • 申请号: US13521549
    申请日: 2011-01-12
  • 公开(公告)号: US08437239B2
    公开(公告)日: 2013-05-07
  • 发明人: Keiichi MatsuzakiKousei Sano
  • 申请人: Keiichi MatsuzakiKousei 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
Optical pickup, optical disk drive device, optical information recording device, and optical information reproduction device
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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