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    Recording method and media having marks and spaces with lengths defined by a predetermined modulation method
    91.
    发明授权
    Recording method and media having marks and spaces with lengths defined by a predetermined modulation method 有权
    记录方法和具有由预定调制方法定义的长度的标记和间隔的介质

    公开(公告)号：US07489613B2

    公开(公告)日：2009-02-10

    申请号：US11842189

    申请日：2007-08-21

    申请人： Mamoru Shoji ,  Kenji Koishi ,  Atsushi Nakamura ,  Takashi Ishida ,  Shuichi Tasaka

    发明人： Mamoru Shoji ,  Kenji Koishi ,  Atsushi Nakamura ,  Takashi Ishida ,  Shuichi Tasaka

    IPC分类号： G11B7/0045

    CPC分类号： G11B7/24085 ,  G11B7/00456 ,  G11B11/10506 ,  G11B11/1053

    摘要： A data storage medium is provided on which data is to be recorded by modulating the data to generate a plurality of recording modulation codes and irradiating a pulse-like light beam to the data storage medium, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the data storage medium. At least two of the plurality of recording marks are formed by the light beam emitted according to a recording pulse train. The recording pulse train comprising a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code. The plurality of recording marks have different lengths represented by T with each other. A number of pulses in each of the recording pulse trains is increased by one as the recording mark is increased in length by 2T. A shortest recording mark and a second shortest recording mark are constituted of a single pulse, respectively.

    摘要翻译： 提供数据存储介质，通过对数据进行调制以产生多个记录调制码并将脉冲状光束照射到数据存储介质上，从而使多个记录标记和空间具有 对应于多个记录调制码的长度形成在数据存储介质上。 多个记录标记中的至少两个由根据记录脉冲序列发射的光束形成。 记录脉冲串包括设置在前面并形成记录标记的前沿的第一脉冲，设置在后端并形成记录标记的后沿的最后脉冲和多脉冲串， 设置在第一脉冲和最后脉冲之间并形成记录标记的中心。 多脉冲串具有长于T的脉冲周期，其表示记录调制码的参考周期。 多个记录标记具有由T表示的彼此不同的长度。 随着记录标记的长度增加2T，每个记录脉冲串中的脉冲数增加1个。 最短记录标记和第二最短记录标记分别由单个脉冲构成。

    Recording method and media having marks and spaces with lengths defined by a predetermined modulation method
    92.
    发明授权
    Recording method and media having marks and spaces with lengths defined by a predetermined modulation method 有权
    记录方法和具有由预定调制方法定义的长度的标记和间隔的介质

    公开(公告)号：US07489612B2

    公开(公告)日：2009-02-10

    申请号：US11842185

    申请日：2007-08-21

    申请人： Mamoru Shoji ,  Kenji Koishi ,  Atsushi Nakamura ,  Takashi Ishida ,  Shuichi Tasaka

    发明人： Mamoru Shoji ,  Kenji Koishi ,  Atsushi Nakamura ,  Takashi Ishida ,  Shuichi Tasaka

    IPC分类号： G11B7/0045

    CPC分类号： G11B7/24085 ,  G11B7/00456 ,  G11B11/10506 ,  G11B11/1053

    摘要： A data storage medium is provided on which data is to be recorded by modulating the data to generate a plurality of recording modulation codes and irradiating a pulse-like light beam to the data storage medium, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the data storage medium. The data storage medium comprises a disc information area that includes a region on which at least one of an irradiation information of the light beam to form the recording marks and a constitution information of the recording mark is to be recorded. At least two of the plurality of recording marks are formed by the light beam emitted according to a recording pulse train. The recording pulse train comprises a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code. The plurality of recording marks have different lengths represented by T with each other. A number of pulses in each of the recording pulse trains is increased by one as the recording mark is increased in length by 2T. A shortest recording mark and a second shortest recording mark are constituted of a single pulse, respectively. Each of the multi-pulse trains has an equal pulse width and pulse interval in the plurality of recording marks.

    摘要翻译： 提供数据存储介质，通过对数据进行调制以产生多个记录调制码并将脉冲状光束照射到数据存储介质上，从而使多个记录标记和空间具有 对应于多个记录调制码的长度形成在数据存储介质上。 数据存储介质包括盘信息区，其包括要在其上记录形成记录标记的光束的照射信息和记录标记的结构信息中的至少一个的区域。 多个记录标记中的至少两个由根据记录脉冲序列发射的光束形成。 记录脉冲串包括设置在前面并形成记录标记的前沿的第一脉冲，设置在后端并形成记录标记的后沿的最后脉冲和多脉冲串，其中 设置在第一脉冲和最后脉冲之间并形成记录标记的中心。 多脉冲串具有长于T的脉冲周期，其表示记录调制码的参考周期。 多个记录标记具有由T表示的彼此不同的长度。 随着记录标记的长度增加2T，每个记录脉冲串中的脉冲数增加1个。 最短记录标记和第二最短记录标记分别由单个脉冲构成。 每个多脉冲串在多个记录标记中具有相等的脉冲宽度和脉冲间隔。

    Optical disc drive for controlling reproduction of an optical disc including a plurality of data layers
    97.
    发明申请
    Optical disc drive for controlling reproduction of an optical disc including a plurality of data layers 有权
    用于控制包括多个数据层的光盘的再现的光盘驱动器

    公开(公告)号：US20070008837A1

    公开(公告)日：2007-01-11

    申请号：US11522344

    申请日：2006-09-18

    申请人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    发明人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    IPC分类号： G11B7/00

    CPC分类号： G11B7/00745 ,  G11B7/00454 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0956 ,  G11B7/126 ,  G11B7/1267 ,  G11B2007/0013

    摘要： When recording or reading an optical disc having plural data recording layers, which data recording layer the light spot is focused on is detected to improve playback signal quality and signals written to the layer on which the light spot is focused are read more reliably. A convergent lens converges the laser beam on the optical disc, and a focus controller controls the focal point of the laser beam on the data layer. A tracking controller positions and tracks the focal point of the laser beam converged by the convergent lens on a track of the optical disc. A photodetector detects the reflected laser beam from the disc. A convergence detector then detects the convergence state of the laser beam emitted to the plural data recording layers. Based on output from the convergence detector, the laser driver is controlled to separately set beam power appropriately for each of the plural data layers of the disc during playback.

    摘要翻译： 当记录或读取具有多个数据记录层的光盘时，检测到该光斑聚焦的哪个数据记录层以提高重放信号质量，并且更可靠地读取写入到其上聚焦光点的层的信号。 会聚透镜将激光束会聚在光盘上，并且聚焦控制器控制激光束在数据层上的焦点。 跟踪控制器将由会聚透镜会聚的激光束的焦点位置并跟踪在光盘的轨道上。 光电检测器检测来自盘的反射激光束。 然后，会聚检测器检测发射到多个数据记录层的激光束的会聚状态。 基于会聚检测器的输出，激光驱动器被控制为在回放期间对盘的多个数据层中的每一个分别设置光束功率。