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111 条记录 (耗时 0.039 秒)

    Optical disk apparatus using focal shift signals to control spherical aberration
    72.
    发明授权
    Optical disk apparatus using focal shift signals to control spherical aberration 失效
    使用焦点偏移信号的光盘装置来控制球面像差

    公开(公告)号：US07012875B2

    公开(公告)日：2006-03-14

    申请号：US10220188

    申请日：2001-08-29

    申请人： Takeshi Shimano ,  Takeshi Maeda ,  Hirofumi Sukeda

    发明人： Takeshi Shimano ,  Takeshi Maeda ,  Hirofumi Sukeda

    IPC分类号： G11B7/135

    CPC分类号： G11B7/13927 ,  G11B7/08576 ,  G11B7/09 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/1381 ,  G11B2007/13727

    摘要： In the past there has been a problem that on a detection surface the influence of interference causes a defocusing signal to degrade, narrowing the range in which spherical aberration can be stably detected. Accordingly, a diffraction grating is used to focus the inner and outer sides of luminous flux on separate optical detectors before the optical flux is focused on an optical detector and defocusing signals are independently calculated to find the difference therebetween, thereby providing a spherical aberration signal. This makes it possible to detect spherical aberation signals more stably.

    摘要翻译： 过去存在这样的问题：在检测面上，干扰的影响会导致散焦信号劣化，能够使可以稳定地检测球面像差的范围变窄。 因此，衍射光栅用于在光通量聚焦在光学检测器之前将光通量的内侧和外侧聚焦在单独的光学检测器上，并且独立地计算散焦信号以找到它们之间的差异，从而提供球面像差信号。 这使得可以更稳定地检测球面像差信号。

    Optical detector having three light receiving areas
    75.
    发明授权
    Optical detector having three light receiving areas 有权
    具有三个光接收区域的光学检测器

    公开(公告)号：US06721242B2

    公开(公告)日：2004-04-13

    申请号：US10142896

    申请日：2002-05-13

    申请人： Kunikazu Ohnishi ,  Takeshi Shimano ,  Shigeru Nakamura ,  Masayuki Inoue ,  Yukio Fukui ,  Yasuyuki Sugi ,  Shinji Fujita ,  Mitsuhiko Ota

    发明人： Kunikazu Ohnishi ,  Takeshi Shimano ,  Shigeru Nakamura ,  Masayuki Inoue ,  Yukio Fukui ,  Yasuyuki Sugi ,  Shinji Fujita ,  Mitsuhiko Ota

    IPC分类号： G11B7095

    CPC分类号： G11B7/131 ,  G11B7/00718 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/094 ,  G11B7/0943

    摘要： An optical detector for detecting at least three optical beams reflected by an optical information recording medium and outputting an electric signal, the optical detector having three light receiving areas each of which receives a respective one of the three optical beams and each of which has four light receiving surfaces, twelve signal lines to transmit an electric signal obtained on respective ones of the four light receiving surfaces of the three light receiving areas, selected ones of the twelve signal lines connected to the four light receiving surfaces of different ones of the three light receiving areas being joined together within the optical detector, and less than nine signal output lines formed by joining the selected ones of the twelve signal lines extend from the optical detector to a signal processing circuit.

    摘要翻译： 一种用于检测由光学信息记录介质反射并输出电信号的至少三个光束的光学检测器，该光学检测器具有三个光接收区域，每个光接收区域接收三个光束中的相应一个，并且每个光接收区域具有四个光 接收表面，用于传输在三个光接收区域的四个光接收表面中的相应一个上获得的电信号的十二条信号线，连接到三个光接收区中的不同光接收表面的四个光接收表面的十二个信号线中的选定的一个 区域在光学检测器内连接在一起，并且通过连接十二条信号线中所选择的信号线形成的少于九条信号输出线从光学检测器延伸到信号处理电路。

    Optical disk apparatus to perform either reproduction or reproduction/recording of each of at least two kinds of optical disks having different substrate thicknesses
    76.
    发明授权
    Optical disk apparatus to perform either reproduction or reproduction/recording of each of at least two kinds of optical disks having different substrate thicknesses 失效
    光盘装置，用于对具有不同基板厚度的至少两种光盘执行再现或再现/记录

    公开(公告)号：US06717906B1

    公开(公告)日：2004-04-06

    申请号：US09614191

    申请日：2000-07-11

    申请人： Takeshi Shimano

    发明人： Takeshi Shimano

    IPC分类号： G11B7135

    CPC分类号： G11B7/1392 ,  G11B7/1374 ,  G11B2007/0006

    摘要： To permit reproduction of a CD-R and the reproduction of a DVD in a compatible manner, both the aberration introduced by a substrate of a DVD having a 0.6 mm thickness and the aberration introduced by a substrate of a CD having a 1.2 mm thickness are reduced by a lens shape design where corresponding substrate thicknesses of the inner and outer regions of the objective lens are made different, and providing, in the inner region thereof, a protruding circular phase shifter and, also in a verge of the inner region, an annular phase shifter. The aberration of the objective lens in the CD reproduction was further decreased and the NA was increased up to 0. S, so that the recording of the CD-R was made possible.

    摘要翻译： 为了允许以兼容的方式再现CD-R和再现DVD，由厚度为0.6mm的DVD的基板引入的像差和由具有1.2mm厚度的CD的基板引入的像差都是 减少了透镜形状设计，使得物镜的内部和外部区域的对应的衬底厚度不同，并且在其内部区域中提供突出的圆形移相器，并且还在内部区域的边缘 环形移相器。 CD再现中的物镜的像差进一步降低，并且NA增加到0.S，使得CD-R的记录成为可能。

    Optical information processor and semiconductor light emitting device suitable for the same
    79.
    发明授权
    Optical information processor and semiconductor light emitting device suitable for the same 有权
    光信息处理器和半导体发光器件适合相同

    公开(公告)号：US06542526B1

    公开(公告)日：2003-04-01

    申请号：US09297147

    申请日：1999-04-26

    申请人： Atsuko Niwa ,  Tsukuru Ohtoshi ,  Takao Kuroda ,  Makoto Okai ,  Takeshi Shimano

    发明人： Atsuko Niwa ,  Tsukuru Ohtoshi ,  Takao Kuroda ,  Makoto Okai ,  Takeshi Shimano

    IPC分类号： H01S500

    CPC分类号： B82Y20/00 ,  H01S5/3202 ,  H01S5/3407 ,  H01S5/343 ,  H01S5/34333

    摘要： Provided are highly reliable information processing equipment enabling a high recording density, and a blue color, blue-violet color and violet color based semiconductor light emitting device operable at a low threshold current density, which device is suitable for the information processing equipment. According to the present invention, there can be realized highly reliable optical information processing equipment enabling high recording density, which is capable of sufficiently recording or reproducing a dynamic image in or from a high-definition TV. An n-type impurity is doped in a barrier layer of a quantum-well active layer of a semiconductor light emitting device at a high density. Alternatively, the oriented plane of a quantum-well active layer of a semiconductor light emitting device is inclined from the (0001) plane, whereby the threshold current value of the semiconductor light emitting device can be reduced. The semiconductor light emitting device is represented by a gallium nitride based compound semiconductor laser device.

    摘要翻译： 提供了能够实现高记录密度的高度可靠的信息处理设备以及以低阈值电流密度可操作的蓝色，蓝紫色和紫色的半导体发光器件，该装置适用于信息处理设备。 根据本发明，可以实现能够实现高记录密度的高度可靠的光信息处理设备，其能够在高分辨率TV中或从高清晰度电视机中充分地记录或再现动态图像。在n型杂质中掺杂n型杂质 高密度的半导体发光器件的量子阱有源层的阻挡层。 或者，半导体发光器件的量子阱有源层的取向平面从（0001）面倾斜，从而可以减小半导体发光器件的阈值电流值。 半导体发光器件由氮化镓基化合物半导体激光器件表示。

    Optical disk medium
    80.
    发明授权
    Optical disk medium 有权
    光盘介质

    公开(公告)号：US06524766B1

    公开(公告)日：2003-02-25

    申请号：US09650728

    申请日：2000-08-30

    申请人： Tetsuo Ariyoshi ,  Motoyasu Terao ,  Takeshi Shimano ,  Toshimichi Shintani

    发明人： Tetsuo Ariyoshi ,  Motoyasu Terao ,  Takeshi Shimano ,  Toshimichi Shintani

    IPC分类号： G11B724

    CPC分类号： B82Y10/00 ,  G11B7/24 ,  G11B7/243 ,  G11B7/253 ,  G11B7/2534 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/259 ,  G11B7/2595 ,  G11B2007/24306 ,  G11B2007/2432 ,  G11B2007/2571 ,  G11B2007/25713 ,  Y10S430/146

    摘要： The optical disk medium permits an increase in recording density using a complex refractive index variation of an inorganic oxide film in a super-resolution medium using an inorganic oxide film. The reflectance of the disk increases due to the complex refractive index variation of the inorganic oxide film. Specifically, in the case where the inorganic oxide film is an oxide film comprising Co, a reflect addition film is provided. The effective spot diameter used for read-out is reduced, thereby increasing recording density. By using a material for which the complex refractive index varies sharply, the recording density can be approximately doubled.

    摘要翻译： 光盘介质允许使用无机氧化物膜的超分辨率介质中的无机氧化物膜的复折射率变化来提高记录密度。 由于无机氧化物膜的复合折射率变化，盘的反射率增加。 具体地，在无机氧化物膜是包含Co的氧化膜的情况下，提供反射加成膜。 用于读出的有效光斑直径减小，从而增加记录密度。 通过使用复合折射率急剧变化的材料，记录密度可以大致加倍。