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    • 2. 发明授权
    • Optical storage medium and optical information apparatus
    • 光存储介质和光信息设备
    • US07852731B2
    • 2010-12-14
    • US11885416
    • 2006-02-22
    • Shinichi KadowakiKenichi KasazumiKazuhisa YamamotoTetsuro MizushimaTomoya Sugita
    • Shinichi KadowakiKenichi KasazumiKazuhisa YamamotoTetsuro MizushimaTomoya Sugita
    • G09B7/00
    • G11B7/00781G11B7/0065G11B7/09G11B7/24044
    • Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each other. An optical storage medium has a reflection surface for reflecting a first beam having a first wavelength, and reflecting a second beam having a second wavelength different from the first wavelength; and an information storage layer for recording information as an interference pattern by incidence of the first beam, or reproducing the information from a wave surface based on the interference pattern. The reflection surface is formed with plural marks or guide grooves usable in a tracking operation or a focusing operation by irradiation of the second beam. The information storage layer is partially formed, in advance, with a reference interference pattern which is reproduced when the first beam is irradiated, and which is used as a reference for correcting the relative positional relation between the first beam and the second beam.
    • 公开了一种能够保持用于伺服控制的光束和用于关于聚焦控制和跟踪控制的信息记录/再现的光束之间的相对位置关系的布置,即使两个光束彼此不同。 光学存储介质具有用于反射具有第一波长的第一光束的反射表面,并且反射具有不同于第一波长的第二波长的第二光束; 以及信息存储层,用于通过第一光束的入射记录信息作为干涉图案,或者基于干涉图案从波面再现信息。 反射面形成有多个标记或引导槽,可用于通过第二光束照射的跟踪操作或聚焦操作。 信息存储层预先以照射第一光束时再现的参考干涉图案部分地形成,并且用作用于校正第一光束和第二光束之间的相对位置关系的参考。
    • 3. 发明申请
    • OPTICAL STORAGE MEDIUM AND OPTICAL INFORMATION APPARATUS
    • 光存储介质和光信息设备
    • US20090303856A1
    • 2009-12-10
    • US11885416
    • 2006-02-22
    • Shinichi KadowakiKenichi KasazumiKazuhisa YamamotoTetsuro MizushimaTomoya Sugita
    • Shinichi KadowakiKenichi KasazumiKazuhisa YamamotoTetsuro MizushimaTomoya Sugita
    • G11B7/00G11B7/24
    • G11B7/00781G11B7/0065G11B7/09G11B7/24044
    • Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each other. An optical storage medium has a reflection surface for reflecting a first beam having a first wavelength, and reflecting a second beam having a second wavelength different from the first wavelength; and an information storage layer for recording information as an interference pattern by incidence of the first beam, or reproducing the information from a wave surface based on the interference pattern. The reflection surface is formed with plural marks or guide grooves usable in a tracking operation or a focusing operation by irradiation of the second beam. The information storage layer is partially formed, in advance, with a reference interference pattern which is reproduced when the first beam is irradiated, and which is used as a reference for correcting the relative positional relation between the first beam and the second beam.
    • 公开了一种能够保持用于伺服控制的光束和用于关于聚焦控制和跟踪控制的信息记录/再现的光束之间的相对位置关系的布置,即使两个光束彼此不同。 光学存储介质具有用于反射具有第一波长的第一光束的反射表面,并且反射具有不同于第一波长的第二波长的第二光束; 以及信息存储层,用于通过第一光束的入射记录信息作为干涉图案,或者基于干涉图案从波面再现信息。 反射面形成有多个标记或引导槽,可用于通过第二光束照射的跟踪操作或聚焦操作。 信息存储层预先以照射第一光束时再现的参考干涉图案部分地形成,并且用作用于校正第一光束和第二光束之间的相对位置关系的参考。