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公开(公告)号：US20090274032A1
公开(公告)日：2009-11-05
申请号：US12095764
申请日：2007-01-30
申请人： Yuuichi Kuze , Katsuya Watanabe
发明人： Yuuichi Kuze , Katsuya Watanabe
IPC分类号： G11B7/135
CPC分类号： G11B7/08511 , G11B7/1275 , G11B2007/0013
摘要： This optical disc drive can read and/or write data from/on an optical disc 20 with multiple information layers including first and second information layers. The drive includes: a light source 3, 4 that emits the light beam; an objective lens 1; an actuator 2 for moving the objective lens perpendicularly to the information layers; a focus error generator 7 for generating a focus error signal representing how much the light beam has been converged on a target one of the information layers; and focus control means for forming a focal point of the light beam on the target information layer by driving the actuator in accordance with the focus error signal. According to the present invention, while a focus jump is being made to shift the focal point of the light beam from the first information layer of the optical disc 20 to the second information layer thereof by moving the objective lens 1, wavelengths and/or numerical apertures for the light beam are changeable while the objective lens 1 is moving.
摘要翻译： 该光盘驱动器可以从具有包括第一和第二信息层的多个信息层的光盘20上读出数据。 驱动器包括：发射光束的光源3,4; 物镜1; 用于使物镜垂直于信息层移动的致动器2; 聚焦误差发生器7，用于产生聚焦误差信号，该聚焦误差信号表示光束已经聚集在目标信息层上的多少; 以及聚焦控制装置，用于根据聚焦误差信号驱动致动器，在目标信息层上形成光束的焦点。 根据本发明，当通过移动物镜1进行聚焦跳跃以将光束的焦点从光盘20的第一信息层移动到第二信息层时，波长和/或数字 光束的孔径在物镜1移动时是可变的。
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2.发明授权公开(公告)号：US07239595B2
公开(公告)日：2007-07-03
申请号：US10752810
申请日：2004-01-07
申请人： Yuuichi Kuze , Katsuya Watanabe , Kenji Fujiune
发明人： Yuuichi Kuze , Katsuya Watanabe , Kenji Fujiune
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G11B7/13927 , G11B2007/13727
摘要： A spherical aberration correction control device for controlling a spherical aberration correction section for correcting a spherical aberration of an optical beam irradiating an optical disc. The spherical aberration correction control device includes a spherical aberration control signal generation section for generating a spherical aberration control signal; and an output section for outputting the spherical aberration control signal to the spherical aberration correction section. A correction amount by which the spherical aberration is corrected is changed by the spherical aberration correction section in accordance with components of the spherical aberration control signal. The spherical aberration control signal generation section generates the spherical aberration control signal such that a sum of correction amounts corresponding to the respective components of the spherical aberration control signal becomes substantially zero with respect to a target correction amount.
摘要翻译： 一种球面像差校正控制装置，用于控制用于校正照射光盘的光束的球面像差的球面像差校正部分。 球面像差校正控制装置包括用于产生球面像差控制信号的球面像差控制信号产生部分; 以及用于将球面像差控制信号输出到球面像差校正部分的输出部分。 根据球面像差控制信号的分量，由球面像差校正部分改变校正球面像差的校正量。 球面像差控制信号生成部生成球面像差控制信号，使得对应于球面像差控制信号的各个分量的校正量的总和相对于目标校正量变得基本为零。
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公开(公告)号：US07606121B2
公开(公告)日：2009-10-20
申请号：US11189539
申请日：2005-07-26
申请人： Yuuichi Kuze , Katsuya Watanabe
发明人： Yuuichi Kuze , Katsuya Watanabe
IPC分类号： G11B7/00
CPC分类号： G11B7/0908 , G11B7/0945
摘要： An optical disk drive includes: a light source for producing a light beam; an objective lens for converging the light beam; an actuator for moving the objective lens with respect to an optical disk; a converging state detecting section for generating a focus error signal representing a converging state of the light beam on an information storage layer of the optical disk; and a focus control section for controlling the operation of the actuator such that the focus position of the light beam matches its target focus position as closely as possible in accordance with information about the target focus position and the focus error signal. The optical disk drive changes the target focus positions of the light beam when modes of operation are switched from a read mode into a write mode, or vice versa.
摘要翻译： 光盘驱动器包括：用于产生光束的光源; 用于会聚光束的物镜; 用于相对于光盘移动物镜的致动器; 会聚状态检测部分，用于产生表示光束在光盘的信息存储层上的会聚状态的聚焦误差信号; 以及焦点控制部分，用于根据关于目标对焦位置和聚焦误差信号的信息尽可能接近地控制致动器的操作，使得光束的焦点位置与其目标对焦位置一致。 当操作模式从读取模式切换到写入模式时，光盘驱动器改变光束的目标对焦位置，反之亦然。
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4.发明授权Optical disc drive which uses a train of pulses to shift the focus of a focusing section 有权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
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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公开(公告)号：US07257053B2
公开(公告)日：2007-08-14
申请号：US10475473
申请日：2002-04-15
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）。
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公开(公告)号：US06567357B2
公开(公告)日：2003-05-20
申请号：US09839522
申请日：2001-04-20
IPC分类号： G11B700
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： An optical disk apparatus of the present invention measures a surface deflection component (shape of surface deflection) from a low-pass component of a compensating filter in a surface deflection measuring part provided in a DSP. Furthermore, the optical disk apparatus calculates timing at which a positional change in a surface deflection component in time required for focus jumping is a predetermined value or less in a timing calculating part, and starts focus jumping at the timing. Because of this, stable focus jumping is made possible.
摘要翻译： 本发明的光盘装置从设置在DSP中的表面偏转测量部中的补偿滤波器的低通分量测量表面偏转分量（表面偏转的形状）。 此外，光盘装置计算定时计算部分中聚焦跳跃所需时间中的表面偏转分量的位置变化为预定值或更小的定时，并且在定时开始聚焦跳跃。 因此，可以实现稳定的重点跳跃。
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公开(公告)号：US07586818B2
公开(公告)日：2009-09-08
申请号：US11597685
申请日：2005-05-27
申请人： Kenji Fujiune , Yuuichi Kuze , Katsuya Watanabe
发明人： Kenji Fujiune , Yuuichi Kuze , Katsuya Watanabe
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/0908 , G11B7/0941 , G11B2007/0013
摘要： The purpose is to provide an optical disc apparatus which can accurately calculate a gain for focus control. An optical apparatus (100) includes: an FE generator (20) for generating an FE signal; an AS generator for generating an AS signal (21); a normalization operator (22); an Fc filter (23); a selector (24); a spherical aberration setting device (34); an FE amplitude measuring device (30); an Fc pull-in instructor (52); an after-pull-in AS measuring device (40); and a gain operator (32). The optical apparatus obtains an amplitude of the FE signal before the focus is pulled in, and obtains a level of the AS signal after the focus is pulled in to adjust a focus gain.
摘要翻译： 其目的是提供一种可以精确地计算用于聚焦控制的增益的光盘装置。 光学装置（100）包括：FE发生器（20），用于产生FE信号; AS发生器，用于产生AS信号（21）; 归一化算子（22）; Fc过滤器（23）; 选择器（24）; 球面像差设定装置（34）; FE振幅测量装置（30）; Fc牵引教练（52）; 后置AS测量装置（40）; 和增益算子（32）。 光学装置在聚焦被拉入之前获得FE信号的幅度，并且在焦点被拉入之后获得AS信号的电平以调整聚焦增益。
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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。
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公开(公告)号：US07158452B2
公开(公告)日：2007-01-02
申请号：US10468270
申请日：2002-02-20
IPC分类号： G11B7/095
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： An optical disc unit 2001 comprises: reflective surface detection means 1010 for detecting a reflective surface; focus control means (1202, 1003, 1009, 1008, 1003, 1012, 1005 and 1204) for performing focus control to a reflective surface so that the distance between the focal point of an optical beam applied to an optical disc 2100 and the reflective surface is within a predetermined error limit; shift means 1007 for shifting the focal point of the optical beam in a direction perpendicular to the optical disc; and control means 1006 for controlling the focus control means and the shift means.
摘要翻译： 光盘单元2001包括：用于检测反射表面的反射表面检测装置1010; 用于对反射表面进行聚焦控制的聚焦控制装置（1202,1003,1009,1008,1003,1012,1005和1204），使得施加到光盘2100的光束的焦点与反射表面之间的距离 在预定的误差范围内; 移位装置1007，用于沿垂直于光盘的方向移动光束的焦点; 以及用于控制聚焦控制装置和移动装置的控制装置1006。
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10.发明申请公开(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
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。
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