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。

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。

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。

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。

公开(公告)号：US07277365B2

公开(公告)日：2007-10-02

申请号：US10289685

申请日：2002-11-06

申请人： Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Yuuichi Kuze

发明人： Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Yuuichi Kuze

IPC分类号： G11B7/095

CPC分类号： G11B7/0943 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/0945 ,  G11B7/1369 ,  G11B7/1392 ,  G11B7/13925

摘要： An optical information processing apparatus includes: an optical head for irradiating an optical information recording medium with light, converting the light reflected by the optical information recording medium into a head signal and outputting the head signal; a signal quality index detector for detecting a signal quality index representing quality of the head signal on the basis of the head signal; and a two-dimensional probe for varying the focal position and the spherical aberration of the light radiated onto the optical information recording medium so as to search for a focal position and a spherical aberration that optimize the signal quality index detected by the signal quality index detector.

摘要翻译： 光学信息处理设备包括：光头，用于用光照射光信息记录介质，将由光信息记录介质反射的光转换成头信号并输出​​头信号; 信号质量指标检测器，用于根据头信号检测表示头信号质量的信号质量指标; 以及用于改变照射到光学信息记录介质上的光的焦点位置和球面像差的二维探头，以便搜索优化由信号质量指标检测器检测到的信号质量指数的焦点位置和球面像差 。

公开(公告)号：US07440362B2

公开(公告)日：2008-10-21

申请号：US10722875

申请日：2003-11-26

申请人： Katsuya Watanabe ,  Shin-ichi Yamada ,  Kenji Fujiune ,  Yuuichi Kuze

发明人： Katsuya Watanabe ,  Shin-ichi Yamada ,  Kenji Fujiune ,  Yuuichi Kuze

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/08529 ,  G11B2007/0013

摘要： An optical disc drive includes: a light source; a focusing section; a focus shifting section for shifting the focal point of light by changing the position of the focusing section perpendicularly to a data storage layer of a given optical disc in accordance with a control signal; a light receiving section for receiving, at multiple areas, the light reflected from the data storage layer and generating light quantity signals; a signal generating section for generating a focus error signal based on the light quantity signals; and a control section for generating the control signal responsive to the focus error signal such that the focal point is transferred to a focus controllable range. The control section generates the control signal such that the focal point is decelerated at a first acceleration and then at a second acceleration. The absolute value of the second acceleration is smaller than that of the first acceleration.

摘要翻译： 光盘驱动器包括：光源; 聚焦部分; 聚焦移动部分，用于通过根据控制信号改变聚焦部分的位置垂直于给定光盘的数据存储层来移动光焦点; 光接收部分，用于在多个区域接收从数据存储层反射的光并产生光量信号; 信号产生部分，用于基于光量信号产生聚焦误差信号; 以及控制部分，用于响应于聚焦误差信号产生控制信号，使得焦点被转移到聚焦可控范围。 控制部生成控制信号，使得焦点以第一加速度然后以第二加速度减速。 第二加速度的绝对值小于第一加速度的绝对值。

公开(公告)号：US07257053B2

公开(公告)日：2007-08-14

申请号：US10475473

申请日：2002-04-15

申请人： Kenji Fujiune ,  Yuuichi Kuze ,  Shin-ichi Yamada ,  Katsuya Watanabe

发明人： Kenji Fujiune ,  Yuuichi Kuze ,  Shin-ichi Yamada ,  Katsuya Watanabe

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/0946 ,  G11B7/24082

摘要： An optical disk apparatus having a high reliability by evading collision between a condensing lens and an optical disk regardless whether the focus control is in the operative state or in the inoperative state, thereby preventing damage to the condensing lens and the optical disk. When the focus control is in the inoperative state, by using a reflection light amount from the optical disk (1), it is ascertained that the focus of the light beam is in the vicinity of the information surface and the condensing lens (15) is driven to be apart from the optical disk (1).

摘要翻译： 通过避免聚光透镜和光盘之间的碰撞而具有高可靠性的光盘装置，无论聚焦控制是处于工作状态还是处于非工作状态，从而防止会聚透镜和光盘的损坏。 当聚焦控制处于非工作状态时，通过使用来自光盘（1）的反射光量，确定光束的焦点在信息表面附近，聚焦透镜（15）为 被驱动离开光盘（1）。

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。

公开(公告)号：US20070258337A1

公开(公告)日：2007-11-08

申请号：US11825004

申请日：2007-07-03

申请人： Kenji Fujiune ,  Yuuichi Kuze ,  Shin-ichi Yamada ,  Katsuya Watanabe

发明人： Kenji Fujiune ,  Yuuichi Kuze ,  Shin-ichi Yamada ,  Katsuya Watanabe

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/0946 ,  G11B7/24082

摘要： An optical disk apparatus having a high reliability by evading collision between a condensing lens and an optical disk regardless whether the focus control is in the operative state or in the inoperative state, thereby preventing damage to the condensing lens and the optical disk. When the focus control is in the inoperative state, by using a reflection light amount from the optical disk (1), it is ascertained that the focus of the light beam is in the vicinity of the information surface and the condensing lens (15) is driven to be apart from the optical disk (1).

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。