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1. 发明授权

US07719931B2 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：US07719931B2
公开(公告)日：2010-05-18
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： G11B7/00 , G11B5/55 , G11B7/125
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。

2. 发明授权

US07307933B2 Optical disc drive 失效
标题翻译：光盘驱动器
公开(公告)号：US07307933B2
公开(公告)日：2007-12-11
申请号：US10499226
申请日：2003-01-20
申请人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
发明人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
IPC分类号： G11B7/125 , G11B7/09
CPC分类号： G11B19/127 , G11B7/0945 , G11B7/1267 , G11B7/13925 , G11B2007/13727
摘要： An optical disc drive according to the present invention reads and/or writes data from/on an optical disc having at least one information layer with a light beam and includes: a spherical aberration detecting section for generating a spherical aberration signal representing a spherical aberration produced at a focal point of the light beam on the information layer of the disc; a spherical aberration changing section for changing the spherical aberration; a spherical aberration regulating section for generating an aberration correction signal to correct the spherical aberration by driving the changing section; and means for detecting a value of the aberration correction signal that minimizes the spherical aberration when the focal point of the light beam is located on the information layer of the disc and for detecting the depth of the information layer, which corresponds to a distance from the information layer on which the focal point of the light beam is located to the surface of the disc, based on the value.
摘要翻译：根据本发明的光盘驱动器从具有至少一个具有光束的信息层的光盘上读出数据，并且包括：球面像差检测部分，用于产生表示产生的球面像差的球面像差信号在盘的信息层上的光束的焦点处; 用于改变球面像差的球面像差变化部分; 球面像差调节部分，用于通过驱动所述变化部分产生像差校正信号以校正球面像差; 以及用于检测当光束的焦点位于盘的信息层上并用于检测信息层的深度时使球面像差最小化的像差校正信号的值的装置，其对应于距离信息层，光束的焦点位于光盘的表面上，基于该值。

3. 发明申请

US20050083798A1 Optical disc unit 失效
标题翻译：光盘单元
公开(公告)号：US20050083798A1
公开(公告)日：2005-04-21
申请号：US10499226
申请日：2003-01-20
申请人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
发明人： Kenji Fujiune , Katsuya Watanabe , Shin-ichi Yamada , Yuuichi Kuze , Kenji Kondo
IPC分类号： G11B7/1392 , G11B7/00 , G11B19/12
CPC分类号： G11B19/127 , G11B7/0945 , G11B7/1267 , G11B7/13925 , G11B2007/13727
摘要： An optical disc drive according to the present invention reads and/or writes data from/on an optical disc having at least one information layer with a light beam and includes: a spherical aberration detecting section for generating a spherical aberration signal representing a spherical aberration produced at a focal point of the light beam on the information layer of the disc; a spherical aberration changing section for changing the spherical aberration; a spherical aberration regulating section for generating an aberration correction signal to correct the spherical aberration by driving the changing section; and means for detecting a value of the aberration correction signal that minimizes the spherical aberration when the focal point of the light beam is located on the information layer of the disc and for detecting the depth of the information layer, which corresponds to a distance from the information layer on which the focal point of the light beam is located to the surface of the disc, based on the value.
摘要翻译：根据本发明的光盘驱动器从具有至少一个具有光束的信息层的光盘上读出数据，并且包括：球面像差检测部分，用于产生表示产生的球面像差的球面像差信号在盘的信息层上的光束的焦点处; 用于改变球面像差的球面像差变化部分; 球面像差调节部分，用于通过驱动所述变化部分产生像差校正信号以校正所述球面像差; 以及用于检测当光束的焦点位于盘的信息层上并用于检测信息层的深度时使球面像差最小化的像差校正信号的值的装置，其对应于距离信息层，光束的焦点位于光盘的表面上，基于该值。

4. 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。

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。

7. 发明授权

US07379398B2 Optical disc apparatus, an optical disc method, and a semiconductor integrated circuit capable of adjusting a focus position of a light beam and a spherical aberration 有权
标题翻译：光盘装置，光盘方法和能够调节光束的聚焦位置和球面像差的半导体集成电路
公开(公告)号：US07379398B2
公开(公告)日：2008-05-27
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
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。

8. 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。

9. 发明申请

US20050047291A1 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：US20050047291A1
公开(公告)日：2005-03-03
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： G02B13/24 , G11B7/00 , G11B7/09 , G11B7/095 , G11B7/13 , G11B7/135
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。

10. 发明授权

US07327642B2 Method of moving a beam spot between information storage layers of an optical disk 失效
标题翻译：在光盘的信息存储层之间移动光束点的方法
公开(公告)号：US07327642B2
公开(公告)日：2008-02-05
申请号：US10423796
申请日：2003-04-25
申请人： Shinichi Yamada , Katsuya Watanabe , Yuichi Kuze , Kenji Fujiune , Kenji Kondo , Takashi Kishimoto , Takeharu Yamamoto
发明人： Shinichi Yamada , Katsuya Watanabe , Yuichi Kuze , Kenji Fujiune , Kenji Kondo , Takashi Kishimoto , Takeharu Yamamoto
IPC分类号： G11B7/095
CPC分类号： G11B7/13925 , G11B7/08511 , G11B7/0908 , G11B7/0945 , G11B7/0956 , G11B2007/0013
摘要： An optical disc drive includes a light source, a lens, a focusing section, a spherical aberration corrector, a focus signal generator, a gain calculator and a processor. The focusing section forms a beam spot in a focusing state on the information storage layer of an optical disc by controlling the position of the lens. The spherical aberration corrector changes a spherical aberration with the beam spot in a focusing state according to a drive value of a driving signal supplied to the spherical aberration corrector. The focus signal generator generates a focus signal representing the focusing state of the beam spot. The gain calculator calculates a loop gain of a focus control system in response to the focus signal. The processor determines the drive value for the spherical aberration corrector by the loop gain.
摘要翻译：光盘驱动器包括光源，透镜，聚焦部分，球面像差校正器，聚焦信号发生器，增益计算器和处理器。聚焦部分通过控制透镜的位置在光盘的信息存储层上形成聚焦状态的光斑。球面像差校正器根据提供给球面像差校正器的驱动信号的驱动值，将聚焦状态下的束斑改变为球面像差。聚焦信号发生器产生表示束斑的聚焦状态的聚焦信号。增益计算器响应于聚焦信号计算聚焦控制系统的环路增益。处理器通过环路增益确定球面像差校正器的驱动值。

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