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126 条记录 (耗时 0.128 秒)

    Optical pickup device and optical disk apparatus
    4.
    发明授权
    Optical pickup device and optical disk apparatus 失效
    光拾取装置和光盘装置

    公开(公告)号：US08085645B2

    公开(公告)日：2011-12-27

    申请号：US12724060

    申请日：2010-03-15

    申请人： Akihiro Arai ,  Syougo Horinouchi ,  Hiroshi Shibata

    发明人： Akihiro Arai ,  Syougo Horinouchi ,  Hiroshi Shibata

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1369 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/1378 ,  G11B2007/0006

    摘要： An optical pickup device includes a first laser element that emits first laser light, a second laser element that emits second laser light of which the wavelength is longer than that of the first laser light, an optical path composition element that composes the first laser light and the second laser light to one optical path, a wavelength selective element that acts on the composed first or second laser light; and an objective lens that condenses the first laser light and the second laser light on an optical disk. The magnitude of the power of the wavelength selective element as a lens with respect to the second laser light is larger than the magnitude of the power of the wavelength selective element as a lens with respect to the first laser light. Accordingly, it may be possible to reduce the optical pickup device and the optical disk apparatus in size.

    摘要翻译： 一种光学拾取装置，包括发射第一激光的第一激光元件，发射波长比第一激光长的第二激光的第二激光元件，构成第一激光的光路组成元件和 第二激光到一个光路，作用在组合的第一或第二激光上的波长选择元件; 以及将第一激光和第二激光冷凝在光盘上的物镜。 作为相对于第二激光的透镜的波长选择元件的功率的大小大于相对于第一激光作为透镜的波长选择元件的功率的大小。 因此，可以缩小光拾取装置和光盘装置的尺寸。

    TRACKING CONTROL DEVICE, TRACKING CONTROL METHOD, AND OPTICAL DISC APPARATUS
    5.
    发明申请
    TRACKING CONTROL DEVICE, TRACKING CONTROL METHOD, AND OPTICAL DISC APPARATUS 有权
    跟踪控制装置，跟踪控制方法和光盘装置

    公开(公告)号：US20100309766A1

    公开(公告)日：2010-12-09

    申请号：US12793038

    申请日：2010-06-03

    申请人： Takashi KISHIMOTO ,  Takeharu Yamamoto ,  Yoshirou Kashiwabara ,  Akihiro Arai

    发明人： Takashi KISHIMOTO ,  Takeharu Yamamoto ,  Yoshirou Kashiwabara ,  Akihiro Arai

    IPC分类号： G11B20/18

    CPC分类号： G11B7/0903 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0943 ,  G11B2007/0013

    摘要： The invention provides a tracking control device, a tracking control method, and an optical disc apparatus that enable to stably perform the tracking control, and reduce an influence of stray light from the other layer on the tracking control. A sub push-pull signal correcting section corrects a sub push-pull signal to be generated from returning light of a sub beam in such a manner that a track crossing component of a main push-pull signal to be generated from returning light of a main beam, and a track crossing component of the sub push-pull signal to be generated from the returning light of the sub beam are canceled. A low pass filter reduces a high frequency component of the sub push-pull signal corrected by the sub push-pull signal correcting section. A subtractor subtracts a sub push-pull signal passing the low pass filter from the main push-pull signal to thereby generate a tracking error signal.

    摘要翻译： 本发明提供一种跟踪控制装置，跟踪控制方法和光盘装置，其能够稳定地执行跟踪控制，并且减少来自另一层的杂散光对跟踪控制的影响。 子推挽信号校正部分校正从子光束的返回光产生的副推挽信号，使得从主信号的返回光产生的主推挽信号的轨道交叉分量 并且从副光束的返回光产生的副推挽信号的轨迹交叉分量被消除。 低通滤波器降低由副推挽信号校正部校正的副推挽信号的高频分量。 减法器从主推挽信号中减去通过低通滤波器的副推挽信号，从而产生跟踪误差信号。

    Optical head and optical device provided with optical head
    6.
    发明授权
    Optical head and optical device provided with optical head 有权
    光头和光盘驱动器包括光头

    公开(公告)号：US07706216B2

    公开(公告)日：2010-04-27

    申请号：US10533628

    申请日：2003-11-04

    申请人： Akihiro Arai

    发明人： Akihiro Arai

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13927 ,  G11B7/0901 ,  G11B7/0956 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1381

    摘要： An optical head includes a plurality of light receiving areas, which receive a first type of reflected rays where zero-order and first-order components of the light diffracted by a track are superposed one upon the other to generate a light quantity signal representing the quantity of light of the first type of reflected rays, and a non-light-receiving area, which is provided between the light receiving areas so as not to receive a second type of reflected ray consisting essentially of the zero-order components. As measured in a first direction in which the light receiving areas are arranged, a gap between the light receiving areas is longer than the width of the non-light-receiving area. The optical head further includes a tracking error signal generating section for generating a tracking error signal based on the light quantity signal.

    摘要翻译： 光头包括多个光接收区域，其接收由轨道衍射的光的零级和一级分量彼此重叠的第一类型的反射光线，以产生表示数量的光量信号 第一类反射光线的光和非光接收区域，其被设置在光接收区域之间，以便不接收基本上由零级分量组成的第二类型的反射光线。 如在其中布置有光接收区域的第一方向测量的，光接收区域之间的间隙比非光接收区域的宽度长。 光头还包括跟踪误差信号产生部分，用于基于光量信号产生跟踪误差信号。

    OPTICAL HEAD, CONTROL METHOD FOR OPTICAL HEAD, AND OPTICAL INFORMATION PROCESSING APPARATUS
    8.
    发明申请
    OPTICAL HEAD, CONTROL METHOD FOR OPTICAL HEAD, AND OPTICAL INFORMATION PROCESSING APPARATUS 失效
    光头，光头控制方法及光信息处理装置

    公开(公告)号：US20090135687A1

    公开(公告)日：2009-05-28

    申请号：US12279061

    申请日：2007-02-13

    申请人： Eishin Mori ,  Akihiro Arai ,  Joji Anzai ,  Hideki Aikoh

    发明人： Eishin Mori ,  Akihiro Arai ,  Joji Anzai ,  Hideki Aikoh

    IPC分类号： G11B7/00

    CPC分类号： G11B7/131 ,  G11B7/0908 ,  G11B7/1353 ,  G11B2007/0013

    摘要： An optical head includes a hologram which extracts, from a luminous flux of reflected light from an optical disk, at least a first luminous flux branch which does not include the optical axis of the luminous flux; and a photodetector which receives the reflected light from the optical disk and produces signal output, wherein the photodetector has light-receiving areas which receive the first luminous flux branch of reflected light from an optical information recording medium layer targeted for recording or playback out of the plurality of optical information recording medium layers of the optical disk, the light-receiving areas are placed in such a way that the signal output resulting from a light spot formed by the first luminous flux branch of the reflected light from the optical information recording medium layer targeted for recording or playback is practically the same between the first and second photodetection areas, and a boundary line of the light-receiving areas is located in such a position as not to include light spots formed by luminous fluxes of reflected light from the optical information recording medium layers other than the optical information recording medium layer targeted for recording or playback.

    摘要翻译： 光头包括从光盘的反射光的光束提取不包括光束的光轴的至少第一光束分支​​的全息图; 以及光接收器，其接收来自光盘的反射光并产生信号输出，其中光电检测器具有光接收区域，其接收来自用于记录或回放的光信息记录介质层的反射光的第一光束分支 光盘的多个光信息记录介质层，光接收区域被放置成使得由来自光信息记录介质层的反射光的由第一光束分支​​形成的光斑产生的信号输出 在第一和第二光检测区域之间进行记录或重放的目标是相同的，并且光接收区域的边界线位于不包括由来自光信息的反射光的光束形成的光点 记录介质层以外的光信息记录介质层 录音或播放。

    Optical head device and optical information device
    9.
    发明申请
    Optical head device and optical information device 审中-公开
    光头设备和光信息设备

    公开(公告)号：US20090040909A1

    公开(公告)日：2009-02-12

    申请号：US11918780

    申请日：2006-04-20

    申请人： Joji Anzai ,  Hideki Aikoh ,  Akihiro Arai ,  Hideki Nakata ,  Fumitomo Yamasaki ,  Yoshiaki Komma

    发明人： Joji Anzai ,  Hideki Aikoh ,  Akihiro Arai ,  Hideki Nakata ,  Fumitomo Yamasaki ,  Yoshiaki Komma

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1275 ,  G11B7/1356 ,  G11B2007/0006

    摘要： An optical head device is provided with a light source 1 for emitting a plurality of lights having different wavelengths, an objective lens 31 for focusing a light spot on an optical disc 21, an objective lens 32 for focusing light spots on optical discs 22 to 24, and a prism 53 for splitting a laser light having a wavelength of 405 nm from the light source 1 into a transmitting light and a reflected light, introducing the reflected light to the objective lens 31 and the transmitting light to the objective lens 32, and introducing laser lights having wavelengths of 660 nm, 780 nm from the light source 1 to the objective lens 32.

    摘要翻译： 光头装置设置有用于发射具有不同波长的多个光的光源1，用于将光点聚焦在光盘21上的物镜31，用于将光点聚焦在光盘22至24上的物镜32 以及棱镜53，用于将来自光源1的具有405nm波长的激光分解成透射光和反射光，将反射光引导到物镜31和透射光到物镜32，以及 将从光源1到物镜32的波长为660nm，780nm的激光引入。

    OPTICAL DISK UNIT
    10.
    发明申请
    OPTICAL DISK UNIT 有权
    光盘单元

    公开(公告)号：US20090010118A1

    公开(公告)日：2009-01-08

    申请号：US12066869

    申请日：2006-09-13

    申请人： Akihiro Arai ,  Takeharu Yamamoto

    发明人： Akihiro Arai ,  Takeharu Yamamoto

    IPC分类号： G11B5/09

    CPC分类号： G11B7/0912

    摘要： To provide an optical disc drive that can shift the focal point steadily to a focus controllable range.An optical disc drive includes: an optical branching element for splitting light from a light source into main and sub-beams; a condenser element for condensing the main and sub-beams; a photodetector section including photodetectors to receive reflected portions of the main and sub-beams, each photodetector having photosensitive areas, each of which outputs a signal representing the intensity of light received there; and a computing section for generating a first focus signal, representing where the focal point of the main beam is located with respect to the storage layer, based on the reflected light of the main beam, and a second focus signal based on the reflected light of the main and sub-beams. The drive performs a first type of control to shift the focal point toward the storage layer, switches the first type into a second type based on a result of comparison to the first focus error signal and then performs a second type of control to make the focal point keep up with the storage layer.

    摘要翻译： 提供可将焦点稳定地转移到焦点可控范围的光盘驱动器。 光盘驱动器包括：光分路元件，用于将来自光源的光分成主光束和子光束; 用于冷凝主光束和副光束的聚光元件; 光电检测器部分包括用于接收主光束和副光束的反射部分的光电检测器，每个光电检测器具有感光区域，每个光电检测器输出表示在那里接收的光的强度的信号; 以及计算部分，用于基于主光束的反射光产生表示主光束的焦点相对于存储层位于何处的第一聚焦信号，以及基于主光束的反射光的第二聚焦信号 主梁和副梁。 驱动器执行第一类型的控制以将焦点移向存储层，基于与第一聚焦误差信号的比较结果将第一类型切换为第二类型，然后执行第二类型的控制以使聚焦 跟上存储层。