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    • 11. 发明授权
    • Information recording device and information recording method
    • 信息记录装置和信息记录方法
    • US07301875B2
    • 2007-11-27
    • US10890176
    • 2004-07-14
    • Isao IchimuraTsutomu MaruyamaYuichi SabiKiyoshi Osato
    • Isao IchimuraTsutomu MaruyamaYuichi SabiKiyoshi Osato
    • G11B7/00
    • G11B7/1369G11B7/00456G11B7/13927
    • An optimum performance is achieved relative to write-once type optical recording mediums on which information is recorded by means of a blue-violet semiconductor laser. An optical disc recording/reproduction apparatus 10 comprises an LD control section 17 adapted to control the irradiation power of a laser when writing data. If the cycle of the channel clock is T, when forming a recording mark having a length of n×T (n being an integer not smaller than 2), a pulse beam is irradiated onto the write-once type information recording medium for n/2 times (decimals, if any, being to be rounded down). When forming a recording mark having a length of not smaller than 6T and even number times of T, a pulse beam is irradiated for n/2 times with all the intermediate pulse beams synchronized with the phase of the channel clock except the leading pulse beam and the tail end pulse beam. When forming a recording mark having a length of not smaller than 6T and odd number times of T, a pulse beam is irradiated with all the intermediate pulse beams delayed from the phase of the channel clock by T/2 except the leading pulse beam and the tail end pulse beam.
    • 相对于其上通过蓝紫色半导体激光器记录信息的一次写入型光学记录介质,实现了最佳性能。 光盘记录/再现装置10包括LD控制部分17,其适于在写入数据时控制激光器的照射功率。 如果通道时钟的周期为T,则当形成长度为n×T(n为2以上的整数)的记录标记时,将脉冲光束照射到一次写入型信息记录介质上n / 2次 (小数,如果有的话)被四舍五入)。 当形成长度不小于6T且偶数次T的记录标记时,除了前导脉冲波束之外,与除了通道时钟的相位同步的所有中间脉冲波束照射脉冲束n / 2次, 尾端脉冲光束。 当形成长度不小于6T且奇数倍的记录标记时,除了前导脉冲波束之外,从通道时钟的相位延迟的所有中间脉冲波束照射脉冲光束T / 2, 尾端脉冲束。
    • 12. 发明授权
    • Optical recording medium with high density track pitch and optical disk device for recording and playback of the same
    • 具有高密度轨道间距的光记录介质和用于记录和重放的光盘装置
    • US06882616B2
    • 2005-04-19
    • US10181776
    • 2001-11-20
    • Isao IchimuraKiyoshi OsatoJun NakanoShin Masuhara
    • Isao IchimuraKiyoshi OsatoJun NakanoShin Masuhara
    • G11B7/007G11B7/24
    • G11B7/24G11B7/007G11B7/00718G11B7/24079G11B7/24082
    • The present invention provides an optical recording medium and an optical disk device realizing prevention of crosswrite and uniformity of playback signals and capable of easily securing compatibility with a read only disk. It provides an optical recording medium on which light LB condensed by a lens (12, 14) having a numerical aperture of 0.85±0.1 and a wavelength of 405±5 nm is focused for recording or playback, having a substrate 1 formed with a groove 2 in its surface, an optical recording layer 3 formed on the substrate and having topography corresponding to the groove, and a light transmission type protection layer 4 formed on the optical recording layer; used when light for recording or playback is focused from the protection layer side to the optical recording layer; using as a recording area only the optical recording layer of one of a side far from the emitting side of the light for recording or playback, that is, a portion corresponding to a recessed portion of the topography, and a side close to it, that is, a portion corresponding to a projecting portion; having a track pitch of 0.32±0.01 μm; and having a depth D2 of a recessed portion with respect to a projecting portion in the range of 19 to 24 nm.
    • 本发明提供了一种光学记录介质和光盘装置,其实现了防止重放信号的横向和均匀性并且能够容易地确保与只读盘的兼容性。 它提供了一种光学记录介质,其上聚焦有数字孔径为0.85±0.1和波长为405±5nm的透镜(12,14)的光LB用于记录或重放,其具有形成有凹槽 2,形成在基板上并且具有与凹槽对应的形貌的光学记录层3和形成在光学记录层上的透光型保护层4; 用于记录或重放的光从保护层侧聚焦到光学记录层; 仅使用远离用于记录或重放的光的发射侧的一侧的光记录层,即与形貌的凹陷部相对应的部分和靠近它的一侧的光记录层, 是对应于突出部分的部分; 轨道间距为0.32±0.01 mum; 相对于突出部的凹部的深度D 2在19〜24nm的范围内。
    • 17. 发明申请
    • Optical recording medium with high density track pitch and optical disk drive for recording and playback of the same
    • 具有高密度轨道间距的光记录介质和用于记录和重放的光盘驱动器
    • US20050163033A1
    • 2005-07-28
    • US11081555
    • 2005-03-17
    • Isao IchimuraKiyoshi OsatoJun NakanoShin Masuhara
    • Isao IchimuraKiyoshi OsatoJun NakanoShin Masuhara
    • G11B7/007G11B7/24
    • G11B7/24G11B7/007G11B7/00718G11B7/24079G11B7/24082
    • The present invention provides an optical recording medium and an optical disk device realizing prevention of crosswrite and uniformity of playback signals and capable of easily securing compatibility with a read only disk. It provides an optical recording medium on which light LB condensed by a lens (12, 14) having a numerical aperture of 0.85±0.1 and a wavelength of 405±5 nm is focused for recording or playback, having a substrate 1 formed with a groove 2 in its surface, an optical recording layer 3 formed on the substrate and having topography corresponding to the groove, and a light transmission type protection layer 4 formed on the optical recording layer; used when light for recording or playback is focused from the protection layer side to the optical recording layer; using as a recording area only the optical recording layer of one of a side far from the emitting side of the light for recording or playback, that is, a portion corresponding to a recessed portion of the topography, and a side close to it, that is, a portion corresponding to a projecting portion; having a track pitch of 0.32±0.01 μm; and having a depth D2 of a recessed portion with respect to a projecting portion in the range of 19 to 24 nm.
    • 本发明提供了一种光学记录介质和光盘装置,其实现了防止重放信号的横向和均匀性并且能够容易地确保与只读盘的兼容性。 它提供了一种光学记录介质,其上聚焦有数字孔径为0.85±0.1和波长为405±5nm的透镜(12,14)的光LB用于记录或重放,其具有形成有凹槽 2,形成在基板上并且具有与凹槽对应的形貌的光学记录层3和形成在光学记录层上的透光型保护层4; 用于记录或重放的光从保护层侧聚焦到光学记录层; 仅使用远离用于记录或重放的光的发射侧的一侧的光记录层,即与形貌的凹陷部相对应的部分和靠近它的一侧的光记录层, 是对应于突出部分的部分; 轨道间距为0.32±0.01 mum; 相对于突出部的凹部的深度D 2在19〜24nm的范围内。
    • 20. 发明申请
    • Information recording device and information recording method
    • 信息记录装置和信息记录方法
    • US20050036423A1
    • 2005-02-17
    • US10890176
    • 2004-07-14
    • Isao IchimuraTsutomu MaruyamaYuichi SabiKiyoshi Osato
    • Isao IchimuraTsutomu MaruyamaYuichi SabiKiyoshi Osato
    • G11B7/0045G11B7/125G11B7/135G11B7/00G11B5/09
    • G11B7/1369G11B7/00456G11B7/13927
    • An optimum performance is achieved relative to write-once type optical recording mediums on which information is recorded by means of a blue-violet semiconductor laser. An optical disc recording/reproduction apparatus 10 comprises an LD control section 17 adapted to control the irradiation power of a laser when writing data. If the cycle of the channel clock is T, when forming a recording mark having a length of n×T (n being an integer not smaller than 2), a pulse beam is irradiated onto the write-once type information recording medium for n/2 times (decimals, if any, being to be rounded down). When forming a recording mark having a length of not smaller than 6T and even number times of T, a pulse beam is irradiated for n/2 times with all the intermediate pulse beams synchronized with the phase of the channel clock except the leading pulse beam and the tail end pulse beam. When forming a recording mark having a length of not smaller than 6T and odd number times of T, a pulse beam is irradiated with all the intermediate pulse beams delayed from the phase of the channel clock by T/2 except the leading pulse beam and the tail end pulse beam.
    • 相对于其上通过蓝紫色半导体激光器记录信息的一次写入型光学记录介质,实现了最佳性能。 光盘记录/再现装置10包括LD控制部分17,其适于在写入数据时控制激光器的照射功率。 如果通道时钟的周期为T,则当形成长度为n×T(n为2以上的整数)的记录标记时,将脉冲光束照射到一次写入型信息记录介质上n / 2次 (小数,如果有的话)被四舍五入)。 当形成长度不小于6T且偶数次T的记录标记时,除了前导脉冲波束之外,与除了通道时钟的相位同步的所有中间脉冲波束照射脉冲束n / 2次, 尾端脉冲光束。 当形成长度不小于6T且奇数倍的记录标记时,除了前导脉冲波束之外,从通道时钟的相位延迟的所有中间脉冲波束照射脉冲光束T / 2, 尾端脉冲束。