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    Optical recording medium for writing data using multiple pulses
    4.
    发明授权
    Optical recording medium for writing data using multiple pulses 有权
    用于使用多个脉冲写入数据的光学记录介质

    公开(公告)号：US08422353B2

    公开(公告)日：2013-04-16

    申请号：US13252806

    申请日：2011-10-04

    申请人： Kazuyo Umezawa ,  Seiji Morita ,  Koji Takazawa ,  Naomasa Nakamura ,  Naoki Morishita ,  Shinichi Katsuda

    发明人： Kazuyo Umezawa ,  Seiji Morita ,  Koji Takazawa ,  Naomasa Nakamura ,  Naoki Morishita ,  Shinichi Katsuda

    IPC分类号： G11B11/00

    CPC分类号： G11B7/24038 ,  G11B7/2467 ,  G11B7/2492 ,  G11B7/2495

    摘要： An optical recording medium including a plurality of recording layers to record/reproduce information using light with a predetermined wavelength, the information being recorded on one of the recording layers using a mark and a space, wherein a channel clock period T is provided for recording the mark on one of the recording layers. A plurality of pulses, including a last pulse arranged at an end of the pulses, are used to record the mark with length 3T, the mark being recorded with a condition that a width of the last pulse is minimum 0T and maximum 1.10T, in which a first subsequent level lower than a peak power level of the last pulse is arranged next to the last pulse, and a second subsequent level lower than the peak power level but higher than the first subsequent level is arranged next to the first subsequent level.

    摘要翻译： 一种光记录介质，包括使用预定波长的光记录/再现信息的多个记录层，所述信息使用标记和空间被记录在一个记录层上，其中提供通道时钟周期T用于记录 在其中一个记录层上标记。 包括布置在脉冲结束处的最后脉冲的多个脉冲用于记录长度为3T的标记，该标记以最后脉冲的宽度最小为0T且最大为1.10T的条件记录 其最后一个电平低于最后脉冲的峰值功率电平的第一后置电平被布置在最后脉冲的旁边，并且比峰值功率电平低但高于第一后续电平的第二后续电平被布置在第一后续电平旁边。

    Optical recording medium, information recording method, and information reproducing method
    9.
    发明授权
    Optical recording medium, information recording method, and information reproducing method 有权
    光记录介质，信息记录方法和信息再现方法

    公开(公告)号：US08174948B2

    公开(公告)日：2012-05-08

    申请号：US13093198

    申请日：2011-04-25

    申请人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

    发明人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

    IPC分类号： G11B7/00

    CPC分类号： G11B7/258 ,  G11B7/00452 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/259 ,  G11B2007/0013

    摘要： According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.

    摘要翻译： 根据一个实施例，提供了一种光记录介质，其中层间串扰低，并且其中可以获得稳定和高质量的记录特性。 为此，光学记录介质包括第一记录部分，该第一记录部分包括第一记录层和第一光反射层，并且设置在靠近光接收表面的一侧;以及第二记录部分，其包括第二记录层 和第二光反射层，并且其被布置在离光接收表面更远的一侧，第一记录部分和第二记录部分被堆叠，其中第二光反射层的厚度大于第一光的厚度 反射层。