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1. 发明授权

US07864638B2 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：US07864638B2
公开(公告)日：2011-01-04
申请号：US11575312
申请日：2005-10-20
申请人： Katsuya Watanabe , Akira Yoshikawa , Shin-ichi Yamada , Junichi Minamino
发明人： Katsuya Watanabe , Akira Yoshikawa , Shin-ichi Yamada , Junichi Minamino
IPC分类号： G11B7/00
CPC分类号： G11B7/0948 , G11B7/0941 , G11B2007/0013
摘要： An optical disk apparatus according to the present invention is capable of reading data from an optical disk 102 which has a plurality of information recording layers, including a first information recording layer whose distance from a disk surface is relatively small and a second information recording layer whose distance from the disk surface is relatively large. This optical disk apparatus includes: a focus control section 117 for causing a converging point of the light beam to be positioned on an arbitrary information recording layer of the optical disk 102; a tracking control section 118 for causing the converging point of the light beam to be positioned on a predetermined track of the information recording layer; and a gain switching section 108 capable of changing gain characteristics of at least one of the focus control section 117 and the tracking control section 118. The gain switching section 108 prescribes a gain crossover frequency when reading data from the first information recording layer to be a value which is lower than a gain crossover frequency when reading data from the second information recording layer.
摘要翻译：根据本发明的光盘装置能够从具有多个信息记录层的光盘102读取数据，该多个信息记录层包括与盘表面的距离相对较小的第一信息记录层和第二信息记录层，距磁盘表面的距离比较大。该光盘装置包括：聚焦控制部117，用于使光束的会聚点位于光盘102的任意信息记录层上; 跟踪控制部分118，用于使光束的会聚点定位在信息记录层的预定轨道上; 以及能够改变焦点控制部分117和跟踪控制部分118中的至少一个的增益特性的增益切换部分108.增益切换部分108规定从第一信息记录层读取数据时的增益交叉频率为该值在从第二信息记录层读取数据时低于增益交叉频率。

2. 发明申请

US20070253305A1 Optical Disk Apparatus 有权
标题翻译：光盘装置
公开(公告)号：US20070253305A1
公开(公告)日：2007-11-01
申请号：US11575312
申请日：2005-10-20
申请人： Katsuya Watanabe , Akira Yoshikawa , Shin-ichi Yamada , Junichi Minamino
发明人： Katsuya Watanabe , Akira Yoshikawa , Shin-ichi Yamada , Junichi Minamino
IPC分类号： G11B7/09
CPC分类号： G11B7/0948 , G11B7/0941 , G11B2007/0013
摘要： An optical disk apparatus according to the present invention is capable of reading data from an optical disk 102 which has a plurality of information recording layers, including a first information recording layer whose distance from a disk surface is relatively small and a second information recording layer whose distance from the disk surface is relatively large. This optical disk apparatus includes: a focus control section 117 for causing a converging point of the light beam to be positioned on an arbitrary information recording layer of the optical disk 102; a tracking control section 118 for causing the converging point of the light beam to be positioned on a predetermined track of the information recording layer; and a gain switching section 108 capable of changing gain characteristics of at least one of the focus control section 117 and the tracking control section 118. The gain switching section 108 prescribes a gain crossover frequency when reading data from the first information recording layer to be a value which is lower than a gain crossover frequency when reading data from the second information recording layer.
摘要翻译：根据本发明的光盘装置能够从具有多个信息记录层的光盘102读取数据，该多个信息记录层包括与盘表面的距离相对较小的第一信息记录层和第二信息记录层，距磁盘表面的距离比较大。该光盘装置包括：聚焦控制部117，用于使光束的会聚点位于光盘102的任意信息记录层上; 跟踪控制部分118，用于使光束的会聚点定位在信息记录层的预定轨道上; 以及能够改变焦点控制部分117和跟踪控制部分118中的至少一个的增益特性的增益切换部分108.增益切换部分108规定从第一信息记录层读取数据时的增益交叉频率为该值在从第二信息记录层读取数据时低于增益交叉频率。

3. 发明授权

US07242648B2 Tracking error signal generation device, optical disc apparatus, tracking error signal generation method and tracking control method 失效
标题翻译：跟踪误差信号发生装置，光盘装置，跟踪误差信号产生方法和跟踪控制方法
公开(公告)号：US07242648B2
公开(公告)日：2007-07-10
申请号：US10784318
申请日：2004-02-20
申请人： Shin-ichi Yamada , Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Akira Yoshikawa
发明人： Shin-ichi Yamada , Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Akira Yoshikawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0953 , G11B7/0903
摘要： A tracking error signal generation device includes a splitting and convergence section for splitting an optical beam into a main beam and a sub beam; a two-portion main beam detection section for detecting the main beam; a main beam push-pull signal generation section for generating a main beam push-pull signal; a two-portion sub beam detection section for detecting the sub beam; a sub beam push-pull signal generation section for generating a sub beam push-pull signal; a displacement amount detection section for detecting a displacement amount of the main beam push-pull signal from a reference value based on the main beam push-pull signal and the sub beam push-pull signal; and a tracking error signal generation section for generating a tracking error signal by correcting either the main beam push-pull signal or the sub beam push-pull signal based on the displacement amount.
摘要翻译：跟踪误差信号产生装置包括用于将光束分解成主光束和子光束的分离和会聚部分; 用于检测主光束的两部分主光束检测部分; 用于产生主光束推挽信号的主光束推挽信号产生部分; 用于检测子光束的两部分子光束检测部分; 子波束推挽信号产生部分，用于产生子波束推挽信号; 位移量检测部分，用于基于主光束推挽信号和子光束推挽信号，从基准值检测主光束推挽信号的位移量; 以及跟踪误差信号产生部分，用于通过基于位移量校正主光束推挽信号或子光束推挽信号来产生跟踪误差信号。

4. 发明授权

US6011762A Optical disk apparatus 失效
标题翻译：光盘装置
公开(公告)号：US6011762A
公开(公告)日：2000-01-04
申请号：US688294
申请日：1996-07-29
申请人： Katsuya Watanabe , Mitsurou Moriya , Shin-ichi Yamada , Yasuaki Edahiro , Takeharu Yamamoto
发明人： Katsuya Watanabe , Mitsurou Moriya , Shin-ichi Yamada , Yasuaki Edahiro , Takeharu Yamamoto
IPC分类号： G11B7/00 , G11B7/085 , G11B7/09
CPC分类号： G11B7/0945 , G11B7/08511 , G11B2007/0006 , G11B2007/0013
摘要： An optical disk apparatus comprises a focusing means for focusing a light beam on a recording medium having first and second information faces; means for moving a focal point of the light beam in a direction substantially perpendicular to the information faces of the recording medium; means for detecting a focus condition of the light beam on the basis of an output signal from the reflected light detecting means; a focus control means for driving the focal point moving means on the basis of an output signal from the focus condition detecting means, and controlling the light beam so that the focus condition of the light beam becomes a prescribed focus condition; and a focus jumping means for moving the focal point of the light beam from the first information face to the second information face by driving the focal point moving means.
摘要翻译：光盘装置包括用于将光束聚焦在具有第一和第二信息面的记录介质上的聚焦装置; 用于沿着与记录介质的信息面大致垂直的方向移动光束的焦点的装置; 用于根据来自反射光检测装置的输出信号检测光束的聚焦条件的装置; 焦点控制装置，用于根据来自聚焦条件检测装置的输出信号驱动焦点移动装置，并控制光束使得光束的聚焦条件成为规定的聚焦条件; 以及聚焦跳跃装置，用于通过驱动焦点移动装置将光束的焦点从第一信息面移动到第二信息面。

5. 发明授权

US07406007B2 Optical disc apparatus and spherical aberration correction controlling apparatus 失效
标题翻译：光盘装置和球面像差校正控制装置
公开(公告)号：US07406007B2
公开(公告)日：2008-07-29
申请号：US10931373
申请日：2004-09-01
申请人： Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Shin-ichi Yamada
发明人： Yuuichi Kuze , Katsuya Watanabe , Kenji Kondo , Shin-ichi Yamada
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0943 , G11B7/0956 , G11B7/131 , G11B7/1374 , G11B7/1378 , G11B7/13927 , G11B2007/13727
摘要： An optical disc apparatus is provided, which comprises a lens tilting section for tilting an objective lens to correct coma aberration occurring in a light beam spot focused on an information surface of an optical disc, a spherical aberration correcting section for correcting spherical aberration occurring in a light beam spot focused on the information surface, and a lens tilt-spherical aberration correction control section for controlling the spherical aberration correcting section to change an amount of spherical aberration correction performed by the spherical aberration correcting section depending on a tilt of the objective lens tilted by the lens tilting section.
摘要翻译：提供了一种光盘装置，其包括透镜倾斜部分，用于倾斜物镜以校正聚焦在光盘的信息表面上的光束点中发生的彗形像差;球面像差校正部分，用于校正在聚焦在信息表面上的光束斑点和透镜倾斜球面像差校正控制部分，用于控制球面像差校正部分，以根据倾斜的物镜的倾斜度来改变由球面像差校正部分执行的球面像差校正量由透镜倾斜部分。

6. 发明授权

US07283435B2 Optical disc device 失效
标题翻译：光盘设备
公开(公告)号：US07283435B2
公开(公告)日：2007-10-16
申请号：US10481206
申请日：2002-07-04
申请人： Yuuichi Kuze , Kenji Fujiune , Takashi Kishimoto , Shin-ichi Yamada , Katsuya Watanabe , Akihiro Yasuda , Shin-ichi Kadowaki , Kousei Sano
发明人： Yuuichi Kuze , Kenji Fujiune , Takashi Kishimoto , Shin-ichi Yamada , Katsuya Watanabe , Akihiro Yasuda , Shin-ichi Kadowaki , Kousei Sano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G11B7/08511 , G11B7/0908 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/1369 , G11B7/1381 , G11B7/13927 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： An optical disc device of the present invention includes spherical aberration changing means for changing spherical aberration occurring on a converging position of a light beam converged by a lens, an actuator for moving the spherical aberration changing means in a relatively precise manner, and an actuator for moving the spherical aberration changing means in a relatively rough manner. The optical disc device drives a second actuator and a third actuator based on a signal of spherical aberration detecting means and performs control so that spherical aberration is almost 0. The third actuator moves the spherical aberration changing means based on a direct current component included in a signal of the spherical aberration detecting means, and the second actuator moves the spherical aberration changing means based on an alternating current component included in the signal of the spherical aberration detecting means.
摘要翻译：本发明的光盘装置包括球面像差改变装置，用于改变在由透镜会聚的光束的会聚位置处产生的球面像差，用于相对精确地移动球面像差改变装置的致动器和用于以相对粗糙的方式移动球面像差改变装置。光盘装置基于球面像差检测装置的信号驱动第二致动器和第三致动器，并执行控制，使得球面像差几乎为0.第三致动器基于包括在球面像差检测装置中的直流分量来移动球面像差改变装置信号，并且第二致动器基于球面像差检测装置的信号中包括的交流分量来移动球面像差改变装置。

7. 发明申请

US20050237879A1 Optical disk device, loop gain setting method, and loop gain setting program 失效
标题翻译：光盘设备，环路增益设置方法和环路增益设置程序
公开(公告)号：US20050237879A1
公开(公告)日：2005-10-27
申请号：US11103508
申请日：2005-04-12
申请人： Kenji Kondo , Katsuya Watanabe , Shin-ichi Yamada , Kenji Fujiune
发明人： Kenji Kondo , Katsuya Watanabe , Shin-ichi Yamada , Kenji Fujiune
IPC分类号： G11B7/09 , G11B7/085
CPC分类号： G11B7/0941 , G11B7/094
摘要： An optical disk device is disclosed that includes loop gain adjustment means for finding the first tracking loop gain of a first region, and loop gain estimation means for estimating the second loop gain of a second region on the basis of the loop gain of the first region. Accordingly, it is possible to set the optimal tracking control loop gain for all regions. As a side benefit, good tracking control stability can be ensured regardless of the region, which improves the reliability of reproduction and recording.
摘要翻译：公开了一种光盘装置，其包括用于求出第一区域的第一跟踪环路增益的环路增益调整装置，以及用于基于第一区域的环路增益来估计第二区域的第二环路增益的环路增益估计装置。因此，可以设定所有区域的最佳跟踪控制环路增益。作为副作用，可以确保良好的跟踪控制稳定性，而不管区域如何，这提高了再现和记录的可靠性。

8. 发明授权

US07539089B2 Optical disc device 失效
标题翻译：光盘设备
公开(公告)号：US07539089B2
公开(公告)日：2009-05-26
申请号：US11736763
申请日：2007-04-18
申请人： Yuuichi Kuze , Kenji Fujiune , Takashi Kishimoto , Shin-ichi Yamada , Katsuya Watanabe , Akihiro Yasuda , Shin-ichi Kadowaki , Kousei Sano
发明人： Yuuichi Kuze , Kenji Fujiune , Takashi Kishimoto , Shin-ichi Yamada , Katsuya Watanabe , Akihiro Yasuda , Shin-ichi Kadowaki , Kousei Sano
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G11B7/08511 , G11B7/0908 , G11B7/0941 , G11B7/0943 , G11B7/0948 , G11B7/131 , G11B7/1369 , G11B7/1381 , G11B7/13927 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： An optical disc device of the present invention includes spherical aberration changing means for changing spherical aberration occurring on a converging position of a light beam converged by a lens, an actuator for moving the spherical aberration changing means in a relatively precise manner, and an actuator for moving the spherical aberration changing means in a relatively rough manner. The optical disc device drives a second actuator and a third actuator based on a signal of spherical aberration detecting means and performs control so that spherical aberration is almost 0. The third actuator moves the spherical aberration changing means based on a direct current component included in a signal of the spherical aberration detecting means, and the second actuator moves the spherical aberration changing means based on an alternating current component included in the signal of the spherical aberration detecting means.
摘要翻译：本发明的光盘装置包括球面像差改变装置，用于改变在由透镜会聚的光束的会聚位置处产生的球面像差，用于相对精确地移动球面像差改变装置的致动器和用于以相对粗糙的方式移动球面像差改变装置。光盘装置基于球面像差检测装置的信号驱动第二致动器和第三致动器，并执行控制，使得球面像差几乎为0.第三致动器基于包括在球面像差检测装置中的直流分量来移动球面像差改变装置信号，并且第二致动器基于球面像差检测装置的信号中包括的交流分量来移动球面像差改变装置。

9. 发明申请

US20050141363A1 Optical disc apparatus, an optical disc method, and a semiconductor integrated circuit 有权
标题翻译：光盘装置，光盘方法和半导体集成电路
公开(公告)号：US20050141363A1
公开(公告)日：2005-06-30
申请号：US11006179
申请日：2004-12-07
申请人： Takeshi Shimamoto , Shin-ichi Yamada , Shin-ichi Kadowaki , Yuuichi Kuze , Kenji Kondo , Katsuya Watanabe
发明人： Takeshi Shimamoto , Shin-ichi Yamada , Shin-ichi Kadowaki , Yuuichi Kuze , Kenji Kondo , Katsuya Watanabe
IPC分类号： G11B7/00 , G11B7/004 , G11B7/085 , G11B7/09 , G11B7/135
CPC分类号： G11B7/0945 , G11B7/0908 , G11B7/13925
摘要： An optical disc apparatus includes a control section. The control section performs a first search while the tracking control is in the off state. The first search is for searching for a plurality of sets of the focus positions of the light beam and the spherical aberration amounts such that an amplitude of the tracking error signal is greater than a predetermined value. The control section performs a second search while the tracking control is in the on state. The second search is for determining a set of the focus position of the light beam and the spherical aberration amount such that the reproduced signal quality index is substantially optimal, among the plurality of sets of the focus positions of the light beam and the spherical aberration amounts obtained in the first search.
摘要翻译：光盘装置包括控制部。控制部在跟踪控制处于关闭状态时进行第一次搜索。第一搜索用于搜索光束的多组聚焦位置和球面像差量，使得跟踪误差信号的幅度大于预定值。当跟踪控制处于接通状态时，控制部执行第二次搜索。第二搜索用于确定光束的聚焦位置和球面像差量的集合，使得重放信号质量指数基本上是最佳的，在光束的多组聚焦位置和球面像差量之间在第一次搜索中获得。

10. 发明授权

US06044049A Optical information apparatus employing two different tracking error signals based on regions on information medium 失效
标题翻译：光信息装置采用基于信息介质上的区域的两种不同的跟踪误差信号
公开(公告)号：US06044049A
公开(公告)日：2000-03-28
申请号：US951140
申请日：1997-10-15
申请人： Kenji Fujiune , Mitsuro Moriya , Hiroyuki Yamaguchi , Shin-ichi Yamada , Katsuya Watanabe
发明人： Kenji Fujiune , Mitsuro Moriya , Hiroyuki Yamaguchi , Shin-ichi Yamada , Katsuya Watanabe
IPC分类号： G11B7/007 , G11B7/085 , G11B7/09 , G11B7/095 , G11B19/12 , G11B7/00
CPC分类号： G11B19/12 , G11B7/08505 , G11B7/0901 , G11B7/00718
摘要： An optical information apparatus for performing at least one of a reproduction operation and a recording operation for an information medium by radiating a light beam on the information medium is provided, wherein the information medium has a first region, including a first track having information recorded thereon in the form of convex and concave pits, and a second region, including a second track formed in the form of convex and concave guide grooves. The apparatus includes: first tracking error detection component for detecting an error in position between the light beam and the first track in the first region; second tracking error detection component for detecting an error in position between the light beam and the second track in the second region; tracking control component for performing tracking control for locating the light beam on a predetermined track; determination component for determining whether the light beam is located in the first region or the second region; and switching component for selecting either one of an output signal of the first tracking error detection component or an output signal of the second tracking error detection component based on a result of determination by the determination component, and sending the selected output signal to the tracking control component.
摘要翻译：提供了一种用于通过在信息介质上照射光束来进行信息介质的再现操作和记录操作中的至少一个的光学信息设备，其中信息介质具有第一区域，其包括具有记录在其上的信息的第一轨道呈凹凸形状的第二区域，以及第二区域，该第二区域包括以凸形和凹形引导槽形式形成的第二轨道。该装置包括：第一跟踪误差检测部件，用于检测第一区域中的光束与第一轨道之间的位置误差; 第二跟踪误差检测部件，用于检测第二区域中的光束与第二光道之间的位置误差; 跟踪控制部件，用于执行用于将光束定位在预定轨道上的跟踪控制; 确定部件，用于确定光束是否位于第一区域或第二区域中; 以及用于基于所述确定部件的确定结果来选择所述第一跟踪误差检测部件的输出信号中的任一个或所述第二跟踪误差检测部件的输出信号的开关部件，以及将所选择的输出信号发送到所述跟踪控制零件。

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