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321 条记录 (耗时 0.049 秒)

    Optical head and optical disk apparatus
    12.
    发明授权
    Optical head and optical disk apparatus 有权
    光头和光盘装置

    公开(公告)号：US08098548B2

    公开(公告)日：2012-01-17

    申请号：US12419421

    申请日：2009-04-07

    申请人： Hideharu Mikami ,  Harukazu Miyamoto ,  Takahiro Kurokawa

    发明人： Hideharu Mikami ,  Harukazu Miyamoto ,  Takahiro Kurokawa

    IPC分类号： G11B7/00

    CPC分类号： G11B7/005 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1367 ,  G11B7/1378 ,  G11B2007/0013

    摘要： An interference type optical head and an optical disk apparatus which have a signal amplification effect and can be manufactured in sizes comparable to conventional optical heads. In an optical disk apparatus that performs signal amplification by making a light, which is used as a reference light without being irradiated on an optical disk and, interfere with reflected light from the optical disk, a corner cube prism that reflects the reference light is mounted on the same actuator as an objective lens. A movable portion adjusts the optical path length of the interfering light in accordance with the kind of optical disk being read and the recording layer being read. A wedge prism may be used for the movable portion, and a spherical aberration correction lens and an optical path length adjusting component may be moved integrally.

    摘要翻译： 具有信号放大效应的干涉型光头和光盘装置，其尺寸可与常规光头相当。 在通过制造光而进行信号放大的光盘装置中，其被用作基准光而不被照射在光盘上并且干涉来自光盘的反射光，安装反射参考光的角立方棱镜 在与物镜相同的致动器上。 可移动部分根据正在读取的光盘的种类和读取的记录层来调节干涉光的光路长度。 楔形棱镜可以用于可动部分，并且球面像差校正透镜和光程长度调节部件可以一体地移动。

    Optical head and optical disk device
    14.
    发明授权
    Optical head and optical disk device 有权
    光头和光盘装置

    公开(公告)号：US08023390B2

    公开(公告)日：2011-09-20

    申请号：US12025797

    申请日：2008-02-05

    申请人： Takeshi Shimano ,  Harukazu Miyamoto ,  Hideharu Mikami ,  Jiro Hashizume

    发明人： Takeshi Shimano ,  Harukazu Miyamoto ,  Hideharu Mikami ,  Jiro Hashizume

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1378 ,  G11B7/0903 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1359

    摘要： An interference type optical head and an optical disk device that can easily adjust an optical path length difference of a couple of lights, ensure higher signal amplification effect, and are suitable for reduction in size are provided in order to improve a regeneration signal quality with amplification of signal in the case where reflectivity of each layer must be lowered and relative noise for the signal increases because read speed is high in a multilayer optical disk. In view of essentially improving an S/N ratio of the regeneration signal in high-speed rotation of a multilayer disk, a plurality of interference phases are generated and an optical system for differential calculation has been reduced in size with an angular selective polarization conversion element in the optical disk device for amplifying the signal with interference of the light not radiated to the disk with the reflected light from the disk. Moreover, adjustment of reflection mirror angle of the reference light is no longer required by using a corner cube prism as the reference light reflection mirror and highly accurate signal detection can also be realized with a simplified structure.

    摘要翻译： 可以容易地调整两个光的光程长度差的干涉型光头和光盘装置，确保更高的信号放大效果，并且适合于减小尺寸，以便通过放大来提高再生信号质量 在多层光盘中的读取速度高的情况下，必须降低每一层的反射率和信号的相对噪声的信号。 鉴于在多层盘的高速旋转中基本上提高再生信号的S / N比，产生多个干涉相位，并且用角度选择偏振转换元件的差分计算用光学系统的尺寸减小了 在光盘装置中，用于将没有辐射到盘的光的信号与来自盘的反射光放大的信号。 此外，通过使用角隅棱镜作为参考光反射镜，不再需要对参考光的反射镜角度的调整，并且也可以以简化的结构实现高精度的信号检测。

    MULTILAYERED OPTICAL DISC AND ITS RECORDING METHOD
    15.
    发明申请
    MULTILAYERED OPTICAL DISC AND ITS RECORDING METHOD 审中-公开
    多层光盘及其记录方法

    公开(公告)号：US20100329097A1

    公开(公告)日：2010-12-30

    申请号：US12569151

    申请日：2009-09-29

    申请人： Harukazu Miyamoto ,  Takahiro Kurokawa

    发明人： Harukazu Miyamoto ,  Takahiro Kurokawa

    IPC分类号： G11B7/00 ,  B32B3/02

    CPC分类号： G11B7/00736 ,  G11B7/24038

    摘要： Information about a variation ratio of the recording power sensitivity, which varies depending on whether another recording layer is recorded or unrecorded, is recorded onto a disc control information area (DI) in advance. Moreover, based on this recording-power-sensitivity variation information, recording-power compensation is performed. The corresponding recording-power compensation method is classified into three types: (1) type in which the recording is performed by judging the recorded/unrecorded states of another layer, (2) type in which, instead of judging the recorded/unrecorded states of another layer, the recording is performed using an intermediate power of the optimum powers for both of the recorded/unrecorded states, and (3) combination of (1) and (2).

    摘要翻译： 关于记录功率灵敏度的变化率的信息，其根据是否记录或未记录另一个记录层而变化，被预先记录在盘控制信息区域（DI）上。 此外，基于该记录功率敏感度变化信息，执行记录功率补偿。 相应的记录功率补偿方法分为三种类型：（1）通过判断另一层的记录/未记录状态来执行记录的类型，（2）类型，而不是判断记录/未记录的状态 使用对于记录/未记录状态的最佳功率的中间功率来执行记录，以及（3）（1）和（2）的组合。

    MULTILAYER OPTICAL DISC
    17.
    发明申请
    MULTILAYER OPTICAL DISC 审中-公开
    多层光盘

    公开(公告)号：US20100226239A1

    公开(公告)日：2010-09-09

    申请号：US12598682

    申请日：2008-03-10

    申请人： Yoshinori Ishikawa ,  Harukazu Miyamoto ,  Akemi Hirotsune

    发明人： Yoshinori Ishikawa ,  Harukazu Miyamoto ,  Akemi Hirotsune

    IPC分类号： G11B7/26

    CPC分类号： G11B7/08511 ,  G11B7/00736 ,  G11B7/24038

    摘要： A multilayer optical disc which has three or more recording layers and enables easy positioning of a focused beam spot onto a particular recording layer in which a BCA is disposed. An inter-layer distance between a particular recording layer and a recording layer adjacent to the particular recording layer is larger than the other inter-layer distances in which, at the focused beam spot positioning, the focused beam spot traverses the said adjacent recording layer earlier than the other recording layer adjacent to the particular recording layer.

    摘要翻译： 具有三个或更多个记录层的多层光盘，并且能够容易地将聚焦束斑定位在其中设置BCA的特定记录层上。 特定记录层与与特定记录层相邻的记录层之间的层间距离大于其他层间距离，其中在聚焦光束点定位时，聚焦光束点较早地穿过所述相邻记录层 比与特定记录层相邻的另一个记录层。

    MULTILAYERED OPTICAL DISC AND ITS RECORDING METHOD
    18.
    发明申请
    MULTILAYERED OPTICAL DISC AND ITS RECORDING METHOD 有权
    多层光盘及其记录方法

    公开(公告)号：US20100214896A1

    公开(公告)日：2010-08-26

    申请号：US12569088

    申请日：2009-09-29

    申请人： Harukazu Miyamoto ,  Takahiro Kurokawa

    发明人： Harukazu Miyamoto ,  Takahiro Kurokawa

    IPC分类号： G11B27/36 ,  B32B3/02

    CPC分类号： G11B7/24038 ,  G11B7/00736 ,  G11B7/1267 ,  G11B2007/0013

    摘要： In an optical disc having N (N is an integer larger than or equal to 3) information recording layers of rewritable or recordable type, each of the information recording layers includes an test area to adjust conditions for recording and reproduction and the test areas are arranged so that the radial positions thereof overlap those of other layers. Recording test is performed only to an area smaller than or equal to 1/N of the test area of each layer and any other area is always unrecorded (write inhibited).

    摘要翻译： 在具有N（N是大于或等于3的整数）的可重写或可记录类型的信息记录层的光盘中，每个信息记录层包括用于调节记录和再现条件的测试区域，并且布置测试区域 使得其径向位置与其他层的径向位置重叠。 记录测试仅对每层测试区域的1 / N小于或等于1的区域进行，任何其他区域始终未被记录（禁止写入）。

    Optical disk apparatus
    19.
    发明授权
    Optical disk apparatus 有权
    光盘装置

    公开(公告)号：US07715287B2

    公开(公告)日：2010-05-11

    申请号：US11746681

    申请日：2007-05-10

    申请人： Takeshi Shimano ,  Harukazu Miyamoto

    发明人： Takeshi Shimano ,  Harukazu Miyamoto

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1362 ,  G11B7/1356 ,  G11B7/1365

    摘要： Provided is an optical disc apparatus including an interference-type optical disk signal detection system, which allows an optical path difference between two kinds of light to be controlled easily, which has a high signal amplification effect, and which is suitable for miniaturization of an optical system. An interference-type optical system is integrally formed to stabilize an optical path difference between signal light and reference light. At the same time, means for controlling an optical path length of the reference light is attached to a reference mirror, and thereby controls signal amplitude so as to be constantly set the maximum in response to a change in the optical path length with time due to a variation in the thickness of a cover layer of an optical disk, a temperature and the like. Moreover, the optical system is miniaturized by using a Twyman-Green type interference optical system.

    摘要翻译： 提供了一种包括干涉型光盘信号检测系统的光盘装置，其能够容易地控制两种光之间的光路差异，其具有高的信号放大效应，并且适合于光学的小型化 系统。 整体形成干涉型光学系统，以稳定信号光与参考光之间的光程差。 同时，用于控制参考光的光程长度的装置附加到参考反射镜，从而控制信号幅度，以便随着时间的流逝随时间的变化而恒定地设定最大值 光盘的覆盖层的厚度的变化，温度等。 此外，通过使用Twyman-Green型干涉光学系统，光学系统被小型化。

    Optical disk
    20.
    发明授权
    Optical disk 有权
    光盘

    公开(公告)号：US07630289B2

    公开(公告)日：2009-12-08

    申请号：US12213762

    申请日：2008-06-24

    申请人： Harukazu Miyamoto ,  Takahiro Kurokawa

    发明人： Harukazu Miyamoto ,  Takahiro Kurokawa

    IPC分类号： G11B7/24

    CPC分类号： G11B20/0021 ,  G11B7/005 ,  G11B7/007 ,  G11B7/24082 ,  G11B20/00086 ,  G11B20/1403 ,  G11B27/19 ,  G11B27/24 ,  G11B2220/20

    摘要： The invention provides an optical disk that enables high-speed reproduction of address signals. A wobble address system for optical disk supports various types of synchronization, such as phase synchronization, bit synchronization, word synchronization, etc., to be established easily with high detection reliability with the use of an self-orthogonal code. Thus, the invention provides a method for easily synchronizing an address signal, i.e., high-speed reproduction of the address signal. Further, by virtue of an efficient modulation system of the address signal and redundancy thereof, it becomes possible to detect address information with high reliability. This capability is particularly effective in optical recording/reproduction with a blue light source whose signal light quantity and reproduction quality are prone to reduce. Moreover, other additional data of the address data is preserved in the wobbles, which provides medium information to a rewritable optical disk without using embossed pits such that a high-reliability disk (with enhanced security) is realized with a low cost and easily.

    摘要翻译： 本发明提供一种能够高速再现地址信号的光盘。 用于光盘的摆动地址系统支持使用自正交码容易地建立具有高检测可靠性的各种类型的同步，诸如相位同步，位同步，字同步等。 因此，本发明提供了一种用于容易地同步地址信号的方法，即地址信号的高速再现。 此外，通过地址信号的有效调制方式及其冗余性，可以高可靠性地检测地址信息。 该功能在具有信号光量和再现质量易于降低的蓝色光源的光学记录/再现中特别有效。 此外，地址数据的其他附加数据被保留在摆动中，其向不可使用浮雕凹坑的可重写光盘提供媒体信息，从而以低成本且容易地实现高可靠性盘（具有增强的安全性）。