发明名称 |
Reproduction apparatus and focus jump method |
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.
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申请公布号 |
US2005237889(A1) |
申请公布日期 |
2005.10.27 |
申请号 |
US20050101422 |
申请日期 |
2005.04.08 |
申请人 |
SONY CORPORATION |
发明人 |
SHIOURA KUNIHIRO;MOROTOMI SHIRO;OINOUE HIROSHI |
分类号 |
G11B7/085;G11B7/00;G11B7/09;(IPC1-7):G11B7/09 |
主分类号 |
G11B7/085 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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