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11. 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。

12. 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。

13. 发明申请

US20070258337A1 Optical disc apparatus 审中-公开
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).

14. 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。

15. 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。

16. 发明授权

US06298019B1 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06298019B1
公开(公告)日：2001-10-02
申请号：US09430040
申请日：1999-10-29
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： G11B700
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 reflected light from 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; 用于检测来自记录介质的反射光的装置; 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。

17. 发明授权

US07480218B2 Optical disk control device with focal point movement control 有权
标题翻译：具有焦点运动控制的光盘控制装置
公开(公告)号：US07480218B2
公开(公告)日：2009-01-20
申请号：US10553616
申请日：2004-04-16
申请人： Akira Yoshikawa , Shin-ichi Yamada
发明人： Akira Yoshikawa , Shin-ichi Yamada
IPC分类号： G11B7/09
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： The present invention provides an optical disk control device that can perform focus pulling in a short time for a target information surface of an optical disk having a plurality of information surfaces. An objective lens (23) is moved toward an optical disk (1) having a plurality of information surfaces (1A, 1B) by the output signal of a driving signal generating circuit (42B), passage of an initial focused focal position is detected by a focal point passage detecting circuit (44), and when the objective lens moves past that position only a predetermined amount closer to the optical disk, an n-rotation delay circuit (70) outputs a reversal instruction f. After changing directions and moving the objective lens away from the optical disk, a focus pulling-in circuit (32B) switches a signal “a” that is output to an actuator driving circuit (21) from the output signal of the driving signal generating circuit to the output signal of the control circuit, activates a control circuit and performs focus pulling-in.
摘要翻译：本发明提供一种光盘控制装置，其可以在具有多个信息表面的光盘的目标信息表面上在短时间内执行聚焦拉动。物镜（23）通过驱动信号发生电路（42B）的输出信号向具有多个信息表面（1A，1B）的光盘（1）移动，初始聚焦焦点位置的通过被焦点通过检测电路（44），并且当物镜仅靠近光盘的预定量移动超过该位置时，n旋转延迟电路（70）输出反转指令f。在改变方向并将物镜移动离开光盘之后，聚焦拉入电路（32B）从驱动信号发生电路的输出信号切换输出到致动器驱动电路（21）的信号“a” 到控制电路的输出信号，激活控制电路并进行聚焦拉入。

18. 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。

19. 再颁专利

USRE40946E1 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：USRE40946E1
公开(公告)日：2009-10-27
申请号：US10677169
申请日：2003-10-02
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
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 reflected light from the recording medium; means for detecting a focus condition of the light beam on the basis on 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; 用于检测来自记录介质的反射光的装置; 用于基于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。

20. 发明授权

US07440362B2 Optical disc drive which uses a train of pulses to shift the focus of a focusing section 有权
标题翻译：使用一串脉冲来移动聚焦部分的焦点的光盘驱动器
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。

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