专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20110276989A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DRIVE 审中-公开
标题翻译：光学拾取器件和光盘驱动器
公开(公告)号：US20110276989A1
公开(公告)日：2011-11-10
申请号：US12983990
申请日：2011-01-04
申请人： Yuichi TAKAHASHI , Kazuo MOMOO , Hiroaki MATSUMIYA , Jun-ichi ASADA
发明人： Yuichi TAKAHASHI , Kazuo MOMOO , Hiroaki MATSUMIYA , Jun-ichi ASADA
IPC分类号： G11B7/135 , G11B19/20
CPC分类号： G11B7/1365 , G11B7/09 , G11B7/1381 , G11B2007/0006
摘要： Has an object of providing an optical pickup capable of realizing tracking control or focus control at a higher level of precision even when relative positions of a light source and a light detector are shifted due to a change in the environmental temperature, long-term deterioration or the like. The optical pickup includes a base member; a light source, fixed to the base member, for emitting a laser beam; an objective lens for collecting the laser beam onto an optical disc; a light detector, fixed to the base member, for detecting the laser beam reflected by the optical disc; fixing means for fixing the light source and/or the light detector to the base member; and a light blocking section for blocking a central portion of the laser beam in a circular shape on an optical path between the collimator lens and the light detector.
摘要翻译：目的是提供一种能够以更高的精度实现跟踪控制或聚焦控制的光拾取器，即使当光源和光检测器的相对位置由于环境温度的变化，长期恶化或类似。光学拾取器包括基座构件; 固定到所述基底构件的用于发射激光束的光源; 用于将激光束收集到光盘上的物镜; 光检测器，固定到所述基座构件，用于检测由所述光盘反射的激光束; 用于将光源和/或光检测器固定到基座构件的固定装置; 以及遮光部，用于在准直透镜和光检测器之间的光路上阻挡圆形的激光束的中心部分。

2. 发明授权

US07929386B2 Optical disc device 失效
标题翻译：光盘设备
公开(公告)号：US07929386B2
公开(公告)日：2011-04-19
申请号：US12095835
申请日：2006-12-06
申请人： Hiroaki Matsumiya , Seiji Nishiwaki
发明人： Hiroaki Matsumiya , Seiji Nishiwaki
IPC分类号： G11B7/00
CPC分类号： G11B7/0908 , G11B7/0901 , G11B7/094 , G11B7/0948 , G11B7/131 , G11B7/1353 , G11B7/13927
摘要： A focus error signal is generated by a first-order diffracted light diffracted by regions 23b, 24b on a hologram plane 2a, and an offset of a tracking error signal is canceled by first-order diffracted light diffracted by regions 21a, 22a, 23a, 24a on the hologram plane 2a. Consequently, even when there is an error in the substrate thicknesses of optical discs, jitter of a reproduction signal at a focus control point can be reduced by decreasing the distance between the focus control point and the point where the jitter is minimized.
摘要翻译：由全息图面2a上的区域23b，24b衍射的一级衍射光产生聚焦误差信号，通过区域21a，22a，23a衍射的一级衍射光消除跟踪误差信号的偏移， 24a在全息图平面2a上。因此，即使在光盘的基板厚度存在误差的情况下，也可以通过减小聚焦控制点与抖动最小的点之间的距离来减小聚焦控制点的再现信号的抖动。

3. 发明申请

US20060181996A1 Optical pickup device and optical disk device 有权
标题翻译：光拾取装置和光盘装置
公开(公告)号：US20060181996A1
公开(公告)日：2006-08-17
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： G11B7/00
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/0943
摘要： An optical disk apparatus according to the present invention includes: a motor for rotating an optical disk; a light source; diffraction means for diffracting a portion of light emitted from the light source to form a main beam of 0th order light and a pair of sub beams composed of +1st order light and −1st order light which are formed on both sides of the 0th order light; an objective lens for converging the main beam and the pair of sub beams onto the optical disk; a light receiving means for receiving the main beam and the sub beams reflected from the optical disk, and outputting electrical signals through photoelectric conversion; and a calculation section for, based on the electrical signals output from the light receiving means, providing a main push-pull signal MPP, a sub push-pull signal SPP, and a differential signal between the main push-pull signal MPP and the sub push-pull signal SPP. A phase difference detection means for detecting a phase difference between the main push-pull signal MPP and the differential signal is further included, and in accordance with an output from the phase difference detection means, an offset is applied in a tracking control of the main beam with respect to the optical disk to compensate for an off-tracking caused by a phase shift of the differential signal.
摘要翻译：根据本发明的光盘装置包括：用于旋转光盘的电动机; 光源; 衍射装置，用于衍射从光源发射的光的一部分以形成第0级次级光的主光束和由+1级次级光组成的一对子光束和第<！ - SIPO - >次级光，其形成在第0级次光的两侧; 用于将所述主光束和所述一对子光束会聚到所述光盘上的物镜; 光接收装置，用于接收从光盘反射的主光束和子光束，并通过光电转换输出电信号; 以及计算部分，用于基于从光接收装置输出的电信号，提供主推挽信号MPP，副推挽信号SPP和主推挽信号MPP与子信号之间的差分信号推挽信号SPP。还包括用于检测主推挽信号MPP和差分信号之间的相位差的相位差检测装置，并且根据相位差检测装置的输出，在主要的跟踪控制中应用偏移相对于光盘的光束来补偿由差分信号的相移导致的偏离跟踪。

4. 发明申请

US20120320727A1 OPTICAL PICKUP AND OPTICAL READ/WRITE APPARATUS 有权
标题翻译：光学拾取和光学读/写设备
公开(公告)号：US20120320727A1
公开(公告)日：2012-12-20
申请号：US13600386
申请日：2012-08-31
申请人： Hiroaki MATSUMIYA , Kazuo MOMOO
发明人： Hiroaki MATSUMIYA , Kazuo MOMOO
IPC分类号： G11B7/135 , G11B7/1353
CPC分类号： G11B7/0903 , G11B7/003 , G11B7/00458 , G11B7/127 , G11B7/131 , G11B7/1381 , G11B7/14 , G11B2007/0013
摘要： An exemplary optical pickup comprises: a light source with first and second emission points; an optical branching element which branches light emitted from the first emission point into multiple light beams including a first main beam and first sub-beams and which also branches light emitted from the second emission point into multiple light beams including a second main beam and second sub-beams; an optical system which condenses the multiple light beams produced by the optical branching element onto an optical storage medium, thereby making the first and second main beams form a write light beam spot and a read light beam spot, respectively, on a target recording track on the storage medium and making the first and second sub-beams form reference light beam spots and other light beam spots somewhere on the storage medium other than the target recording track.
摘要翻译：示例性光学拾取器包括：具有第一和第二发射点的光源; 将从第一发射点发射的光分支成包括第一主光束和第一子光束的多个光束并且还将从第二发射点发射的光分支成包括第二主光束和第二子光束的多个光束的光分支元件光束光学系统，其将由光分路器产生的多个光束会聚到光存储介质上，从而使第一和第二主光束分别在目标记录轨道上形成写入光束点和读取光束点，存储介质并使第一和第二子光束在存储介质上除了目标记录轨道之外的某处形成参考光束点和其他光束点。

5. 发明申请

US20120287766A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 有权
标题翻译：光学拾取装置和光盘装置
公开(公告)号：US20120287766A1
公开(公告)日：2012-11-15
申请号：US13511017
申请日：2010-11-24
申请人： Yuichi Takahashi , Kazuo Momoo , Hiroaki Matsumiya , Jun-ichi Asada
发明人： Yuichi Takahashi , Kazuo Momoo , Hiroaki Matsumiya , Jun-ichi Asada
IPC分类号： G11B7/135 , G11B20/10
CPC分类号： G11B7/131 , G11B7/0903 , G11B7/1353 , G11B7/1381 , G11B2007/0013
摘要： When performing recording/reproduction of information for a given recording layer of an optical disc having three recording layers, influences of reflected light from other recording layers are reduced or removed, thus making it possible to obtain a more stable RF signal or focus error signal.An optical pickup device includes a light source, a collimator lens, an objective lens, a photodetector, and a light shielding member. Among the recording layers of the optical disc, a first layer and a second layer adjoining each other are disposed in the order of the first layer and second layer from near the objective lens. The light shielding member is disposed at a position satisfying the condition d>d1 to block a part of reflected light from the second layer when light is converged on the first layer, where d is an optical path length from the photodetector to the light shielding member; and d1 is a distance from the photodetector to a position at which reflected light from the second layer becomes focused between the collimator lens and the photodetector.
摘要翻译：当对具有三个记录层的光盘的给定记录层执行信息的记录/再现时，减少或去除来自其它记录层的反射光的影响，从而可以获得更稳定的RF信号或聚焦误差信号。光学拾取装置包括光源，准直透镜，物镜，光电检测器和遮光构件。在光盘的记录层中，邻接的第一层和第二层以物镜附近的第一层和第二层的顺序设置。光遮蔽构件设置在满足条件d> d1的位置，以便当光聚焦在第一层上时阻挡来自第二层的反射光的一部分，其中d是从光电检测器到遮光构件的光路长度 ; d1是从光电检测器到第二层的反射光在准直透镜和光电检测器之间聚焦的位置的距离。

6. 发明申请

US20120117580A1 OPTICAL PICKUP AND OPTICAL DISC DRIVE INCLUDING THE OPTICAL PICKUP 审中-公开
标题翻译：光学拾取和光盘驱动器，包括光学拾取
公开(公告)号：US20120117580A1
公开(公告)日：2012-05-10
申请号：US13100327
申请日：2011-05-04
申请人： Jun-ichi Asada , Hiroaki Matsumiya , Kazuo Momoo
发明人： Jun-ichi Asada , Hiroaki Matsumiya , Kazuo Momoo
IPC分类号： G11B7/135 , G11B19/20
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/131 , G11B7/1374 , G11B7/1395 , G11B2007/0006
摘要： According to the present invention, a tracking error signal can be obtained with good stability by the three-beam differential push-pull method even if the track guide groove direction of the optical disc changes as viewed from the objective lens.An optical pickup 30 according to the present invention includes: a grating element 110 for splitting light emitted from a light source 121 into multiple light beams including zero-order, −first-order and +first-order diffracted light beams; an objective lens 118 for condensing the zero-order and ±first-order diffracted light beams, which have come from the grating element 110, onto an optical disc; and a photosensor 101 with multiple photodetectors for receiving respectively the three diffracted light beams reflected from the optical disc. The grating element 110 is designed so that when measured perpendicularly to tracks on the disc, sub-light beam spots formed on the disc by the ±first-order diffracted light beams are larger than a main light beam spot formed on the disc by the zero-order diffracted light beam.
摘要翻译：根据本发明，即使从物镜观察光盘的轨道引导槽方向变化，也可以通过三光束差分推挽法获得具有良好稳定性的跟踪误差信号。根据本发明的光拾取器30包括：光栅元件110，用于将从光源121发射的光分成包括零级，一级和+一级衍射光束的多个光束; 用于将来自光栅元件110的零级和±一级衍射光束聚光到光盘上的物镜118; 以及具有多个光电检测器的光传感器101，用于分别接收从光盘反射的三个衍射光束。光栅元件110被设计成使得当垂直于盘上的轨道测量时，通过±一级衍射光束在盘上形成的子光束点大于通过零点形成在盘上的主光束点级衍射光束。

7. 发明授权

US07929399B2 Optical pickup device and optical disc device 失效
标题翻译：光拾取装置和光盘装置
公开(公告)号：US07929399B2
公开(公告)日：2011-04-19
申请号：US12334698
申请日：2008-12-15
申请人： Hiroaki Matsumiya , Kazuo Momoo
发明人： Hiroaki Matsumiya , Kazuo Momoo
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0909 , G11B2007/0013
摘要： When recording on and/or reproducing from an information recording medium having a plurality of recording layers is performed, there has been a problem in appropriately detecting a control signal at the time of the recording and/or reproducing, since reflected light from a recording layer, which does not undergo the recording and/or reproducing, enters a photodetector concurrently with reflected light from a recording layer which undergoes the recording and/or reproducing. In the present invention, a polarization hologram is used to diffract light outputted from a light source and to generate a main beam, which is a zeroth-order light beam, and a pair of sub beams, which is a positive first-order light beam and a negative first-order light beam each having a polarization direction perpendicular to a polarization direction of the main beam. Accordingly, it is possible to prevent the reflected sub beams from a recording layer, which is a target undergoing recording and/or reproducing, from interfering with the reflected main beam from a recording layer, which is a non-target not undergoing the recording and/or reproducing. Therefore, it is possible to obtain an accurate control signal based on the sub beams, and also possible to realize an optical pickup device having a preferable recording performance.
摘要翻译：当从具有多个记录层的信息记录介质进行记录和/或再现时，由于来自记录层的反射光，在记录和/或再现时适当检测控制信号存在问题，不经历记录和/或再现的记录和/或再现的记录和/或再现的记录层的反射光同时进入光电检测器。在本发明中，使用偏振全息图来衍射从光源输出的光并产生作为零级光束的主光束和作为正一级光束的一对子光束以及各自具有与主光束的偏振方向垂直的偏振方向的负一级光束。因此，可以防止作为正在进行记录和/或再现的目标的记录层的反射子光束来自不是未进行记录的非目标的记录层的反射主光束， /或再现。因此，可以获得基于子光束的精确的控制信号，并且还可以实现具有优选的记录性能的光学拾取装置。

8. 发明申请

US20090274022A1 OPTICAL DISC DEVICE 失效
标题翻译：光盘设备
公开(公告)号：US20090274022A1
公开(公告)日：2009-11-05
申请号：US12095835
申请日：2006-12-06
申请人： Hiroaki Matsumiya , Seiji Nishiwaki
发明人： Hiroaki Matsumiya , Seiji Nishiwaki
IPC分类号： G11B7/00
CPC分类号： G11B7/0908 , G11B7/0901 , G11B7/094 , G11B7/0948 , G11B7/131 , G11B7/1353 , G11B7/13927
摘要： A focus error signal is generated by a first-order diffracted light diffracted by regions 23b, 24b on a hologram plane 2a, and an offset of a tracking error signal is canceled by first-order diffracted light diffracted by regions 21a, 22a, 23a, 24a on the hologram plane 2a. Consequently, even when there is an error in the substrate thicknesses of optical discs, jitter of a reproduction signal at a focus control point can be reduced by decreasing the distance between the focus control point and the point where the jitter is minimized.
摘要翻译：由全息图面2a上的区域23b，24b衍射的一级衍射光产生聚焦误差信号，通过区域21a，22a，23a衍射的一级衍射光消除跟踪误差信号的偏移， 24a在全息图平面2a上。因此，即使在光盘的基板厚度存在误差的情况下，也可以通过减小聚焦控制点与抖动最小的点之间的距离来减小聚焦控制点的再现信号的抖动。

9. 发明申请

US20090154323A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 失效
标题翻译：光学拾取装置和光盘装置
公开(公告)号：US20090154323A1
公开(公告)日：2009-06-18
申请号：US12334698
申请日：2008-12-15
申请人： Hiroaki Matsumiya , Kazuo Momoo
发明人： Hiroaki Matsumiya , Kazuo Momoo
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0909 , G11B2007/0013
摘要： When recording on and/or reproducing from an information recording medium having a plurality of recording layers is performed, there has been a problem in appropriately detecting a control signal at the time of the recording and/or reproducing, since reflected light from a recording layer, which does not undergo the recording and/or reproducing, enters a photodetector concurrently with reflected light from a recording layer which undergoes the recording and/or reproducing. In the present invention, a polarization hologram is used to diffract light outputted from a light source and to generate a main beam, which is a zeroth-order light beam, and a pair of sub beams, which is a positive first-order light beam and a negative first-order light beam each having a polarization direction perpendicular to a polarization direction of the main beam. Accordingly, it is possible to prevent the reflected sub beams from a recording layer, which is a target undergoing recording and/or reproducing, from interfering with the reflected main beam from a recording layer, which is a non-target not undergoing the recording and/or reproducing. Therefore, it is possible to obtain an accurate control signal based on the sub beams, and also possible to realize an optical pickup device having a preferable recording performance.
摘要翻译：当从具有多个记录层的信息记录介质进行记录和/或再现时，由于来自记录层的反射光，在记录和/或再现时适当检测控制信号存在问题，不经历记录和/或再现的记录和/或再现的记录和/或再现的记录层的反射光同时进入光电检测器。在本发明中，使用偏振全息图来衍射从光源输出的光并产生作为零级光束的主光束和作为正一级光束的一对子光束以及各自具有与主光束的偏振方向垂直的偏振方向的负一级光束。因此，可以防止作为正在进行记录和/或再现的目标的记录层的反射子光束来自不是未进行记录的非目标的记录层的反射主光束， /或再现。因此，可以获得基于子光束的精确的控制信号，并且还可以实现具有优选的记录性能的光学拾取装置。

10. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式