发明申请
- 专利标题: Reproduction apparatus and focus jump method
- 专利标题(中): 繁殖装置和重点跳跃法
-
申请号: US11101422申请日: 2005-04-08
-
公开(公告)号: US20050237889A1公开(公告)日: 2005-10-27
- 发明人: Kunihiro Shioura , Shiro Morotomi , Hiroshi Oinoue
- 申请人: Kunihiro Shioura , Shiro Morotomi , Hiroshi Oinoue
- 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
- 优先权: JP2004-126371 20040422; JP2005-037458 20050215
- 主分类号: G11B7/085
- IPC分类号: G11B7/085 ; G11B7/00 ; G11B7/09
摘要:
The invention provides a reproduction apparatus that reproduces information recorded in a recording medium having plural recording layers, including: an optical head that irradiates laser beams on the respective recording layers and detects reflected light information to read out information recorded in the respective recording layers; a shaft sliding type focus actuator that holds the object lens; a focus servo section that generates a focus servo drive signal and drives the focus actuator such that a focus state of the laser beams is kept in a state of focus on a recording layer on which the reproduction is performed; and a focus jump control section that generates a kick signal for starting focus jump movement by the focus actuator and a brake signal for ending the focus jump movement.
公开/授权文献
- US07613092B2 Reproduction apparatus and focus jump method 公开/授权日:2009-11-03