发明公开
EP1463053A2 Method and apparatus for recognizing optical discs, optical disc drive, and method and apparatus for distinguishing data storage layers
审中-公开
方法和装置，用于检测光盘，光盘播放机和设备的用于区分数据记录层
- 专利标题： Method and apparatus for recognizing optical discs, optical disc drive, and method and apparatus for distinguishing data storage layers
- 专利标题（中）： 方法和装置，用于检测光盘，光盘播放机和设备的用于区分数据记录层
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申请号： EP04006717.5申请日： 2004-03-19
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公开(公告)号： EP1463053A2公开(公告)日： 2004-09-29
- 发明人: Watanabe, Katsuya , Kishimoto, Takashi , Takahashi, Rie , Shioya, Masayoshi
- 申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 申请人地址： 1006, Oaza-Kadoma Kadoma-shi, Osaka 571-8501 JP
- 专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人地址： 1006, Oaza-Kadoma Kadoma-shi, Osaka 571-8501 JP
- 代理机构： Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
- 优先权： JP2003082401 20030325
- 主分类号： G11B19/12
- IPC分类号： G11B19/12 ; G11B7/0037 ; G11B7/085
摘要：
A method for recognizing at least two types of optical discs, which are associated with multiple different numerical apertures, includes the step of setting the numerical aperture of a focusing mechanism equal to a first one of the multiple different numerical apertures. The focusing mechanism is used to focus a light beam on a data storage layer of a given optical disc. The first numerical aperture is smaller than any of the other numerical apertures. The method further includes the step of recognizing the type of the given optical disc by the first numerical aperture that has been selected in the step of setting the numerical aperture.
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