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11. 发明授权

US06704254B1 Optical disk device, control method of optical system, medium, and information aggregate 有权
标题翻译：光盘装置，光学系统的控制方法，介质和信息聚合
公开(公告)号：US06704254B1
公开(公告)日：2004-03-09
申请号：US09698904
申请日：2000-10-27
申请人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
发明人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B700
CPC分类号： G11B7/0956 , G11B7/0901 , G11B7/0938 , G11B7/0943
摘要： This optical disk device includes an objective lens (7) for condensing radiated light from a light source on an optical disk (8), an optical detecting unit for detecting reflected light from the optical disk (8), and a control unit for performing the tracking control and/or the tilt control of the objective lens (7) by utilizing the output from the optical detecting unit, in which the control unit uses the off-track quantity and/or the tilt quantity of the objective lens (7) when performing the above described control.
摘要翻译：该光盘装置包括用于将来自光源的辐射光聚焦在光盘（8）上的物镜（7），用于检测来自光盘（8）的反射光的光学检测单元，以及用于执行通过利用来自光学检测单元的输出来跟踪控制和/或物镜（7）的倾斜控制，其中控制单元使用物镜（7）的越野量和/或倾斜量，当执行上述控制。

12. 发明授权

US08000184B2 Optical pickup device and optical disc device with offset compensation 有权
标题翻译：具有偏移补偿的光学拾取装置和光盘装置
公开(公告)号：US08000184B2
公开(公告)日：2011-08-16
申请号：US12598779
申请日：2008-04-17
申请人： Jun-iti Asada , Seiji Nishiwaki , Kazuo Momoo
发明人： Jun-iti Asada , Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/00
CPC分类号： G11B7/094 , G11B7/1275 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0006 , G11B2007/13727
摘要： When first-order diffracted beams leak into a region, which is for receiving only a zeroth-order diffracted beam from an optical disc, due to positional displacement between an objective lens and a hologram element, an offset compensation signal includes an AC component, the offset compensation signal preferably including a DC component only. Accordingly, there may be caused deterioration in a modulation degree of the tracking error (TE) signal. A partial light shielding element 110 is formed on a hologram surface 112a along boundaries between a light receiving region (121a), which receives a zeroth-order diffracted beam, and light receiving regions (121b, 121c), which receive the zeroth-order diffracted beam and first-order diffracted beams, so as to cover the light receiving region (121a). Further, the partial light shielding element 110 shifts phases of transmitted light beams by π, whereby the TE signal is offset-compensated, and the modulation degree can be improved.
摘要翻译：当一级衍射光束由于物镜和全息元件之间的位置偏移而泄漏到仅用于从光盘接收零级衍射光束的区域中时，偏移补偿信号包括AC分量，偏移补偿信号优选仅包括DC分量。因此，可能导致跟踪误差（TE）信号的调制度的劣化。部分遮光元件110沿着接收零级衍射光束的光接收区域（121a）和接收零级衍射光的受光区域（121b，121c）之间的边界形成在全息图表面112a上光束和一级衍射光束，以覆盖光接收区域（121a）。此外，部分遮光元件110将透射光束的相位移位＆pgr，由此TE信号被偏移补偿，并且可以提高调制度。

13. 发明授权

US07468939B2 Optical disk apparatus with phase difference offset 有权
标题翻译：具有相位偏移的光盘设备
公开(公告)号：US07468939B2
公开(公告)日：2008-12-23
申请号：US10552193
申请日：2004-04-06
申请人： Hiroaki Matsumiya , Seiji Nishiwaki , Kazuo Momoo
发明人： Hiroaki Matsumiya , Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/085
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/0943
摘要： An optical pickup device capable of correcting an off-tracking which is ascribable to a phase shift of a differential push-pull signal waveform, even when an optical disk or an objective lens is tilted along a radial direction of the optical disk, so that stable tracking control can be performed; and, an optical disk apparatus comprising such an optical pickup device.
摘要翻译：即使当光盘或物镜沿着光盘的径向方向倾斜时，能够校正归因于差分推挽信号波形的相移的偏离跟踪的光拾取装置，使得稳定可执行跟踪控制; 以及包括这种光学拾取装置的光盘装置。

14. 发明授权

US07330418B2 Optical disk with plural signal mark positions in a direction substantially perpendicular to tracks 失效
标题翻译：光盘在与轨迹大致垂直的方向上具有多个信号标记位置
公开(公告)号：US07330418B2
公开(公告)日：2008-02-12
申请号：US11072292
申请日：2005-03-07
申请人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
发明人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B7/00
CPC分类号： G11B7/24085 , G11B7/007 , G11B7/00718 , G11B7/0901 , G11B7/0943 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/1369 , G11B7/1381 , G11B7/24088
摘要： An optical disk device has a light source which emits light; and light converging means of, in each of signal mark forming regions, each of lands, or each of grooves of an optical disk, converging the light from the light source onto a signal surface of the optical disk with selectively positioning a signal mark at any one of plural positions which are arranged in a direction that is substantially perpendicular to tracks, each of the signal mark forming regions surrounded by adjacent two of boarder lines which are between two the tracks on the signal surface of the optical disk, and which are substantially parallel to the tracks, and each of which substantially divides an area between adjacent tracks in two parts.
摘要翻译：光盘装置具有发光的光源; 以及在每个信号标记形成区域中的光会聚装置，每个光阑的凹槽或每个凹槽中，将来自光源的光会聚到光盘的信号表面上，从而选择性地将信号标记定位在任何多个位置中的一个被布置在基本上垂直于轨道的方向上，每个信号标记形成区被围绕在光盘的信号表面上的两个轨道之间的相邻的两个边缘线包围，并且基本上平行于轨道，并且其中的每一个在两个部分中基本上划分相邻轨道之间的区域。

15. 发明申请

US20060077858A1 Wavelength plate, optical element, and optical pickup 失效
标题翻译：波长板，光学元件和光学拾取器
公开(公告)号：US20060077858A1
公开(公告)日：2006-04-13
申请号：US11237197
申请日：2005-09-28
申请人： Jun-ichi Asada , Seiji Nishiwaki , Kazuo Momoo
发明人： Jun-ichi Asada , Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/00
CPC分类号： G11B7/1365 , G11B7/1369 , G11B2007/0006
摘要： There is provided, in an optical disk apparatus which is capable of recording data to or reading data from a plurality of types of optical disks, a wavelength plate and an optical pickup which can reduce deterioration in signal quality even in the presence of a large birefringence of the substrate of an optical disk. A wavelength plate 6 according to the present invention is a wavelength plate to be placed in an optical path through which rays of a plurality of wavelengths travel back and forth, the plurality of wavelengths including a ray having a wavelength λ. The wavelength plate includes a two-dimensional array of a plurality of birefringent regions, the birefringent regions including first regions D1 and second regions D2 having different optic axis directions from each other. The relationship 240°≦Δ1≦300° is true, where Δ1 is a retardation of the wavelength plate 6 for the ray of the wavelength λ.
摘要翻译：在能够将数据记录到或从多种类型的光盘读取数据的光盘装置中，提供了即使存在大的双折射也能够降低信号质量劣化的波长板和光学拾取器的光盘的基板。根据本发明的波长板6是放置在多个波长的光线前后移动的光路中的波长板，多个波长包括具有波长λ的射线。波长板包括多个双折射区域的二维阵列，双折射区域包括具有与每个双折射区域不同的光轴方向的第一区域D 1 1和第二区域D 2＆lt; 2＆gt; 其他。对于波长λ的光线，相位差240°<=> 1°<= 300°为真，其中Δ1≤1是波长板6的延迟。

16. 发明申请

US20050157634A1 Optical disk device, optical disk, data recording method, and data reproducing method 失效
标题翻译：光盘装置，光盘，数据记录方法和数据再现方法
公开(公告)号：US20050157634A1
公开(公告)日：2005-07-21
申请号：US11072292
申请日：2005-03-07
申请人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
发明人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B7/24 , G11B7/004 , G11B7/007 , G11B7/013 , G11B7/09 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/24085 , G11B7/007 , G11B7/00718 , G11B7/0901 , G11B7/0943 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/1369 , G11B7/1381 , G11B7/24088
摘要： An optical disk device has a light source which emits light; and light converging means of, in each of signal mark forming regions, each of lands, or each of grooves of an optical disk, converging the light from the light source onto a signal surface of the optical disk with selectively positioning a signal mark at any one of plural positions which are arranged in a direction that is substantially perpendicular to tracks, each of the signal mark forming regions surrounded by adjacent two of boarder lines which are between two the tracks on the signal surface of the optical disk, and which are substantially parallel to the tracks, and each of which substantially divides an area between adjacent tracks in two parts.
摘要翻译：光盘装置具有发光的光源; 以及在每个信号标记形成区域中的光会聚装置，每个光阑的凹槽或每个凹槽中，将来自光源的光会聚到光盘的信号表面上，并选择性地将信号标记定位在任何多个位置中的一个被布置在基本上垂直于轨道的方向上，每个信号标记形成区被围绕在光盘的信号表面上的两个轨道之间的相邻的两个边缘线包围，并且基本上平行于轨道，并且其中的每一个在两个部分中基本上划分相邻轨道之间的区域。

17. 发明授权

US06822934B2 Optical disc apparatus for finding a tracking error for an optical disk 失效
标题翻译：用于找到光盘的跟踪误差信号的光盘装置
公开(公告)号：US06822934B2
公开(公告)日：2004-11-23
申请号：US09884890
申请日：2001-06-19
申请人： Seiji Nishiwaki , Yoichi Saito , Kazuo Momoo , Kenji Nagashima
发明人： Seiji Nishiwaki , Yoichi Saito , Kazuo Momoo , Kenji Nagashima
IPC分类号： G11B700
CPC分类号： G11B7/0906 , G11B7/0901 , G11B7/0909 , G11B7/0943 , G11B7/131 , G11B7/1353 , G11B7/1356 , G11B7/1365 , G11B7/1372 , G11B7/1381
摘要： An optical disc apparatus capable of mounting an optical disc includes a light source for emitting light; an objective lens for collecting the light emitted by the light source on the optical disc; a first light distribution section integrally movable with the objective lens, the first light distribution section including a first area and a second area, the first light distribution section outputting the light reflected by the optical disc and transmitted through the first area or the second area as transmission light, outputting the light reflected by the optical disc and diffracted by the first area as first diffraction light, and outputting the light reflected by the optical disc and diffracted by the second area as second diffraction light; a transmission light detection section for detecting the transmission light and outputting a TE1 signal indicating an offset of the detected transmission light; a first diffraction light detection section for detecting the first diffraction light and the second diffraction light, and outputting a TE2 signal indicating a difference between a light amount of the detected first diffraction light and a light amount of the detected second diffraction light; and a control device for generating a tracking error signal for the optical disc based on the TE1 signal and the TE2 signal.
摘要翻译：能够安装光盘的光盘装置包括用于发光的光源; 用于收集由光源在光盘上发射的光的物镜; 所述第一配光部与所述物镜一体地移动，所述第一配光部包括第一区域和第二区域，所述第一配光部输出由所述光盘反射并经由所述第一区域或所述第二区域透射的光，透射光，输出由光盘反射并被第一区域衍射的光作为第一衍射光，并输出由光盘反射并被第二区域衍射的光作为第二衍射光; 发送光检测部，用于检测发送光并输出表示所检测的发送光的偏移的TE1信号; 第一衍射光检测部分，用于检测第一衍射光和第二衍射光，并输出指示检测到的第一衍射光的光量与检测到的第二衍射光的光量之间的差的TE2信号; 以及用于基于TE1信号和TE2信号产生用于光盘的跟踪误差信号的控制装置。

18. 发明授权

US08045432B2 Optical disc device 失效
标题翻译：光盘设备
公开(公告)号：US08045432B2
公开(公告)日：2011-10-25
申请号：US12296822
申请日：2007-03-19
申请人： Seiji Nishiwaki , Kazuo Momoo , Junichi Asada
发明人： Seiji Nishiwaki , Kazuo Momoo , Junichi Asada
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353
摘要： Light emitted from a radiation light source 1 passes through a diffraction grating 3a and is separated into transmitted light a and +1st/−1st order diffracted lights b, c. These lights are collected through an objective lens 7 on tracks of an optical disc 8 in a partially overlapped state. Light reflected by the tracks passes through the objective lens 7 and is incident upon light diverging means 13a. Subsequently, light corresponding to the transmitted light “a” diverges into two light beams that are respectively incident upon light detection regions A1, A2, light corresponding to the diffracted lights “b” and “c” respectively diverges into two light beams that are respectively incident upon light detection regions B1, B2, and C1, C2. A tracking error signal associated with the tracks of the optical disc 8 is generated by combining signals detected in the light detection regions A1, A2, B1, B2, C1, and C2.
摘要翻译：从辐射光源1发射的光通过衍射光栅3a并分离为透射光a和+ 1 / -1级衍射光b，c。这些光以部分重叠的状态通过物镜7收集在光盘8的轨道上。由轨道反射的光通过物镜7并入射到光发散装置13a上。随后，对应于透射光“a”的光分散入分别入射到光检测区域A1，A2的两个光束，分别对应于衍射光“b”和“c”的光分别发散成两个光束入射到光检测区域B1，B2和C1，C2。通过组合在光检测区域A1，A2，B1，B2，C1和C2中检测到的信号来产生与光盘8的轨道相关联的跟踪误差信号。

19. 发明授权

US07911926B2 Optical disc drive 失效
标题翻译：光盘驱动器
公开(公告)号：US07911926B2
公开(公告)日：2011-03-22
申请号：US12090268
申请日：2006-09-19
申请人： Seiji Nishiwaki , Kazuo Momoo
发明人： Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/00
CPC分类号： G11B7/0901 , G11B7/1353 , G11B7/1381
摘要： A tracking error signal is generated with stability without being easily affected by a distribution fluctuation of light reflected from an optical disc or by a lens shift.An optical disc drive according to the present invention includes: an objective lens 5 with an aperture radius r0 for converging a light beam emitted from a light source 1; a polarizing hologram substrate 2 for dividing the beam reflected from the optical disc 6 into branched light beams; a photodetector substrate 6, on which at least some of the light beams are incident to generate signals representing the intensities of the light beams; and a shielding mask 16 for cutting off the beam partially. If xy coordinates are defined on a virtual plane, passing the center of the lens 5 and intersecting with the optical axis 7 at right angles, such that an x-axis is parallel to the disc radial direction and a y-axis crosses the x-axis at right angles, the shielding mask 16 prevents the beam from passing through areas of the virtual plane defined by coordinates (x, y) satisfying |x|>a, |y|>b and a2+b2
摘要翻译：产生稳定的跟踪误差信号，而不会受到由光盘反射的光的分布波动或透镜偏移的影响。根据本发明的光盘驱动器包括：具有用于会聚从光源1发射的光束的孔径半径r0的物镜5; 用于将从光盘6反射的光束分成分支光束的偏振全息图基板2; 光检测器基板6，其中至少一些光束入射以产生表示光束强度的信号; 以及用于部分切断光束的遮光罩16。如果在虚拟平面上定义xy坐标，则使透镜5的中心与光轴7成直角相交，使得x轴平行于圆盘径向，并且y轴与x轴交叉，屏蔽掩模16防止光束通过由满足| x |> a，| y |> b和a2 + b2

20. 发明申请

US20090238051A1 OPTICAL DISC DRIVE 失效
标题翻译：光盘驱动器
公开(公告)号：US20090238051A1
公开(公告)日：2009-09-24
申请号：US12090268
申请日：2006-09-19
申请人： Seiji Nishiwaki , Kazuo Momoo
发明人： Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B20/10
CPC分类号： G11B7/0901 , G11B7/1353 , G11B7/1381
摘要： A tracking error signal is generated with stability without being easily affected by a distribution fluctuation of light reflected from an optical disc or by a lens shift.An optical disc drive according to the present invention includes: an objective lens 5 with an aperture radius r0 for converging a light beam emitted from a light source 1; a polarizing hologram substrate 2 for dividing the beam reflected from the optical disc 6 into branched light beams; a photodetector substrate 6, on which at least some of the light beams are incident to generate signals representing the intensities of the light beams; and a shielding mask 16 for cutting off the beam partially. If xy coordinates are defined on a virtual plane, passing the center of the lens 5 and intersecting with the optical axis 7 at right angles, such that an x-axis is parallel to the disc radial direction and a y-axis crosses the x-axis at right angles, the shielding mask 16 prevents the beam from passing through areas of the virtual plane defined by coordinates (x, y) satisfying |x|>a, |y|>b and a2+b2
摘要翻译：产生稳定的跟踪误差信号，而不会受到由光盘反射的光的分布波动或透镜偏移的影响。根据本发明的光盘驱动器包括：具有用于会聚从光源1发射的光束的孔径半径r0的物镜5; 用于将从光盘6反射的光束分成分支光束的偏振全息图基板2; 光检测器基板6，其中至少一些光束入射以产生表示光束强度的信号; 以及用于部分切断光束的遮光罩16。如果在虚拟平面上定义xy坐标，则使透镜5的中心与光轴7成直角相交，使得x轴平行于圆盘径向，并且y轴与x轴交叉，屏蔽掩模16防止光束通过由满足| x |> a，| y |> b和a2 + b2

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