发明授权
- 专利标题： Optical disc apparatus, information recording method, and information reproduction method
- 专利标题（中）： 光盘装置，信息记录方法和信息再现方法
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申请号： US12038201申请日： 2008-02-27
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公开(公告)号： US07944794B2公开(公告)日： 2011-05-17
- 发明人: Goro Fujita , Kimihiro Saito , Toshihiro Horigome , Kunihiko Hayashi
- 申请人： Goro Fujita , 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： JP2007-094822 20070330
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
An optical disc apparatus that records recording marks in a plurality of mark layers by irradiating predetermined light onto a disc-like volume type recording medium on the basis of information to be recorded is disclosed. The apparatus includes: a first focus position adjusting means for adjusting the position of a focus on which a first light beam focuses within the volume type recording medium, in the direction of an optical axis of the first light beam; a second focus position adjusting means for adjusting the position of a focus on which a second light beam focuses within the volume type recording medium, in the direction of an optical axis of the second light beam; a focus control means for controlling the first focus position adjusting means and the second focus position adjusting means; and a recording control means for forming the recording marks at the positions of respective focuses.