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    Optical pickup unit and information recording/reproduction apparatus
    2.
    发明申请
    Optical pickup unit and information recording/reproduction apparatus 失效
    光学拾取单元和信息记录/再现装置

    公开(公告)号：US20060187778A1

    公开(公告)日：2006-08-24

    申请号：US11344956

    申请日：2006-01-31

    申请人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

    发明人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B2007/0006

    摘要： According to one embodiment, an optical pickup unit which can record, reproduction and erase information in/from an information recording medium has tracks with different pitches, the dividing means has at least a part of a dividing boundary line placing between an end of a 1st order diffraction light with the largest diffraction angle and an end of a 1st order diffraction light with the smallest diffraction angle of the reflected laser beam.

    摘要翻译： 根据一个实施例，可以在信息记录介质中记录，再现和擦除信息的光学拾取单元具有不同间距的轨道，该分割装置具有至少一部分分割边界线，其位于第一 具有最大衍射角的次级衍射光和具有反射激光束的最小衍射角的1级衍射光的末端。

    Optical head and optical disc apparatus
    3.
    发明申请
    Optical head and optical disc apparatus 审中-公开
    光头和光盘装置

    公开(公告)号：US20070002704A1

    公开(公告)日：2007-01-04

    申请号：US11479738

    申请日：2006-06-30

    申请人： Sumitaka Maruyama ,  Kazuo Watabe ,  Nobuaki Kaji ,  Akihito Ogawa

    发明人： Sumitaka Maruyama ,  Kazuo Watabe ,  Nobuaki Kaji ,  Akihito Ogawa

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1381 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/1353 ,  G11B2007/0006

    摘要： To improve the quality of a tracking error signal when reproducing information recorded in an optical disc having tracks with two or more different pitches, using a diffraction element which is given a diffraction pattern configured to provide diffracted rays on the light-receiving surface of a photodetector which receives a reflected laser beam reflected on the recording layer of an optical disc and outputs a corresponding signal, to use diffracted rays generated according to pitches of optical tracks of an optical disc having different track pitches by switching to a predetermined combination in each of a phase different detection method (DPD) and a push pull method (PP).

    摘要翻译： 为了提高跟踪误差信号的质量，当再现记录在具有两个或多个不同间距的轨道的光盘中的信息时，使用衍射元件，该衍射元件被配置为在光电检测器的光接收表面上提供衍射光线 其接收在光盘的记录层上反射的反射激光束，并输出相应的信号，以使用通过切换到具有不同轨道间距的光盘的光轨的光轨的间距产生的衍射光线 相位不同检测方法（DPD）和推拉法（PP）。

    Optical pickup unit and information recording/reproduction apparatus
    4.
    发明授权
    Optical pickup unit and information recording/reproduction apparatus 失效
    光学拾取单元和信息记录/再现装置

    公开(公告)号：US07668064B2

    公开(公告)日：2010-02-23

    申请号：US11344956

    申请日：2006-01-31

    申请人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

    发明人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Akihito Ogawa ,  Kazuo Watabe

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B2007/0006

    摘要： According to one embodiment, an optical pickup unit which can record, reproduction and erase information in/from an information recording medium has tracks with different pitches, the dividing means has at least a part of a dividing boundary line placing between an end of a 1st order diffraction light with the largest diffraction angle and an end of a 1st order diffraction light with the smallest diffraction angle of the reflected laser beam.

    摘要翻译： 根据一个实施例，可以在信息记录介质中记录，再现和擦除信息的光学拾取单元具有不同间距的轨道，该分割装置具有至少一部分分割边界线，其位于第一 具有最大衍射角的次级衍射光和具有反射激光束的最小衍射角的1级衍射光的末端。

    Optical pickup unit and information recording/reproducing apparatus
    5.
    发明申请
    Optical pickup unit and information recording/reproducing apparatus 审中-公开
    光学拾取单元和信息记录/再现装置

    公开(公告)号：US20060268669A1

    公开(公告)日：2006-11-30

    申请号：US11442997

    申请日：2006-05-31

    申请人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Kazuo Watabe

    发明人： Nobuaki Kaji ,  Sumitaka Maruyama ,  Kazuo Watabe

    IPC分类号： G11B7/00 ,  G02B27/40

    CPC分类号： G11B7/1381 ,  G11B7/0916 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006 ,  G11B2007/0013

    摘要： An embodiment of the invention is useful for providing an optical pickup unit, which condenses light with different wavelengths at different positions and focal distances, and exactly detects a focus error signal when receiving the reflected light with different wavelengths from two or more kinds of recording medium, in the state that the focal distance of a condensing means is the same as the distance from the recording surface of a recording medium to the condensing means, by dividing light with different wavelengths emitted from light sources and reflected by a recording medium into a predetermined number by a diffraction element, and condensing at a position of a predetermined distance in a predetermined direction.

    摘要翻译： 本发明的一个实施例对于提供一种光拾取单元是有用的，该单元在不同位置和焦距下会聚不同波长的光，并且当从两种或多种记录介质接收具有不同波长的反射光时，精确地检测聚焦误差信号 在聚光装置的焦距与从记录介质的记录表面到聚光装置的距离相同的状态下，通过将从光源发射并由记录介质反射的不同波长的光分割成预定的 通过衍射元件的数量，并且在预定方向上的预定距离的位置处聚光。

    Information recording and reproducing apparatus and method of reproducing BCA signal at high accuracy
    6.
    发明申请
    Information recording and reproducing apparatus and method of reproducing BCA signal at high accuracy 审中-公开
    以高精度再现BCA信号的信息记录和再现装置和方法

    公开(公告)号：US20060171269A1

    公开(公告)日：2006-08-03

    申请号：US11339535

    申请日：2006-01-26

    申请人： Takehiro Hiramatsu ,  Sumitaka Maruyama ,  Yukiyasu Tatsuzawa

    发明人： Takehiro Hiramatsu ,  Sumitaka Maruyama ,  Yukiyasu Tatsuzawa

    IPC分类号： G11B5/09

    CPC分类号： G11B7/00736

    摘要： One embodiment of the invention, a BCA signal is reproduced properly from a BCA while inhibiting influences properly from a groove contained in a reproduction signal, when a signal is reproduced from an additional writing type optical disk provided with the groove by cutting the DC component of an envelop detected from the BCA signal by an AC coupling section and then comparing with a predetermined threshold with a comparator.

    摘要翻译： 本发明的一个实施例中，当BCA信号从BCA正确地再现时，同时从包含在再现信号中的凹槽适当地抑制影响，当通过切割具有沟槽的附加写入型光盘来再现信号时， 通过AC耦合部分从BCA信号检测到的包络，然后与比较器与预定阈值进行比较。

    Information storage medium, recording method, and recording apparatus
    7.
    发明授权
    Information storage medium, recording method, and recording apparatus 有权
    信息存储介质，记录方法和记录装置

    公开(公告)号：US08582399B2

    公开(公告)日：2013-11-12

    申请号：US13045782

    申请日：2011-03-11

    申请人： Kazuo Watabe ,  Hideo Ando ,  Sumitaka Maruyama ,  Yutaka Kashihara ,  Akihito Ogawa

    发明人： Kazuo Watabe ,  Hideo Ando ,  Sumitaka Maruyama ,  Yutaka Kashihara ,  Akihito Ogawa

    IPC分类号： G11B7/24 ,  G11B21/08

    CPC分类号： G11B7/24035 ,  G11B7/0079 ,  G11B7/1267 ,  G11B7/24038 ,  G11B20/1217 ,  G11B2220/235 ,  G11B2220/2537

    摘要： According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out area, data area, and middle area are arranged from an inner circumference of the layer 1. A guard track zone is arranged on a side of the data area in the data lead-out area, and a reference code zone, R physical format information zone, recording management zone, and drive test zone are arranged in the data lead-in area of the layer 0 and padding of the guard track zone of the data lead-out area is performed after padding of the drive test zone of data lead-in area and recording of the recording management zone.

    摘要翻译： 根据一个实施例，从读取表面，系统导入区，数据导入区，数据区和中间区布置层0和层1的信息存储介质从 层0，并且从层1的内周布置有系统导出区域，数据导出区域，数据区域和中间区域。保护轨道区域布置在数据区域的一侧 引导区和参考代码区，R物理格式信息区，记录管理区和驱动测试区布置在数据引导区的数据导入区和数据引导区的保护轨道区的填充中， 在填充数据导入区域的驱动测试区域和记录管理区域的记录之后执行输出区域。