公开(公告)号：USRE41372E1

公开(公告)日：2010-06-08

申请号：US10750527

申请日：2003-12-31

申请人： Yuu Okada ,  Kenji Fujiune ,  Katsuya Watanabe ,  Takeharu Yamamoto ,  Jun Kikuchi

发明人： Yuu Okada ,  Kenji Fujiune ,  Katsuya Watanabe ,  Takeharu Yamamoto ,  Jun Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0946 ,  G11B7/08511 ,  G11B7/0945 ,  G11B7/0948 ,  G11B2007/0006

摘要： An optical disc apparatus includes: a converging section for converging a light beam and irradiating a rotating information medium with the converged light beam; a moving section for moving the converging section, thereby moving a converging point of the converged light beam in a direction perpendicular to an information surface of the information medium; a converging state detection section for generating a focus servo signal which represents a converging state of the light beam on the information medium based on reflected light or transmitted light of the light beam from the information medium; a focus servo control section for controlling the moving section based on the focus servo signal, so that the light beam reaches a predetermined converging state on the information medium; and a focus pull-in section for turning ON the control by the focus servo control section, wherein the focus pull-in section turns ON the control by the focus servo control section in a case where the focus pull-in section determines that the converging point of the light beam is located in the vicinity of the minimum velocity position on the information medium axial deviation.

摘要翻译： 一种光盘装置，包括：聚光部分，用于会聚光束并用会聚光束照射旋转的信息介质; 移动部分，用于移动会聚部分，从而沿着与信息介质的信息表面垂直的方向移动会聚光束的会聚点; 收敛状态检测部分，用于基于来自信息介质的光束的反射光或透射光产生表示光束在信息介质上的会聚状态的聚焦伺服信号; 聚焦伺服控制部分，用于基于聚焦伺服信号控制移动部分，使得光束在信息介质上达到预定的会聚状态; 以及聚焦引入部，用于使聚焦伺服控制部的控制接通，其中，在聚焦引入部确定会聚的情况下，聚焦引入部使聚焦伺服控制部的控制接通 光点的位置位于信息介质轴向偏差的最小速度位置附近。

公开(公告)号：US08072858B2

公开(公告)日：2011-12-06

申请号：US12162196

申请日：2007-01-25

申请人： Kenji Fujiune ,  Jun Kikuchi

发明人： Kenji Fujiune ,  Jun Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0953

摘要： A disk motor which rotationally drives an optical disk; a rotational phase detector which detects a rotational phase thereof; an optical head having a collecting lens which collects an optical bean; a light detector and an LE signal generator which detect a position of the collecting lens in the optical head as a position signal; an LE signal memory recorder and an LE signal memory which store, in synchronization with a rotational phase to be detected by the rotational phase detector, the positional signal from the LE signal generator; an LE signal memory regenerator which outputs as a correction signal, in synchronization with a rotational phase to be detected, the positional signal which has already been detected; a subtractor; an LE signal filter, a drive circuit and a Tk actuator which move the collecting lens using a signal from the subtractor; and a low pass filter which reduces a high-frequency component of the correction signal are provided.

摘要翻译： 旋转驱动光盘的盘马达; 检测其旋转相位的旋转相位检测器; 具有聚光透镜的光头; 光检测器和LE信号发生器，其检测光头中的聚光透镜的位置作为位置信号; LE信号存储器和LE信号存储器，其与由旋转相位检测器检测的转动相位同步地存储来自LE信号发生器的位置信号; LE信号存储器再生器，其与被检测的转动相位同步地输出已经被检测的位置信号作为校正信号; 减法者 LE信号滤波器，驱动电路和Tk致动器，其使用来自减法器的信号来移动收集透镜; 并且提供降低校正信号的高频分量的低通滤波器。

公开(公告)号：US06400663B1

公开(公告)日：2002-06-04

申请号：US09660766

申请日：2000-09-13

申请人： Yuu Okada ,  Kenji Fujiune ,  Katsuya Watanabe ,  Takeharu Yamamoto ,  Jun Kikuchi

发明人： Yuu Okada ,  Kenji Fujiune ,  Katsuya Watanabe ,  Takeharu Yamamoto ,  Jun Kikuchi

IPC分类号： G11B700

CPC分类号： G11B7/0946 ,  G11B7/08511 ,  G11B7/0945 ,  G11B7/0948 ,  G11B2007/0006

摘要： An optical disc apparatus includes: a converging section for converging a light beam and irradiating a rotating information medium with the converged light beam; a moving section for moving the converging section, thereby moving a converging point of the converged light beam in a direction perpendicular to an information surface of the information medium; a converging state detection section for generating a focus servo signal which represents a converging state of the light beam on the information medium based on reflected light or transmitted light of the light beam from the information medium; a focus servo control section for controlling the moving section based on the focus servo signal, so that the light beam reaches a predetermined converging state on the information medium; and a focus pull-in section for turning ON the control by the focus servo control section, wherein the focus pull-in section turns ON the control by the focus servo control section in a case where the focus pull-in section determines that the converging point of the light beam is located in the vicinity of the minimum velocity position on the information medium axial deviation.

摘要翻译： 一种光盘装置，包括：聚光部分，用于会聚光束并用会聚光束照射旋转的信息介质; 移动部分，用于移动会聚部分，从而沿着与信息介质的信息表面垂直的方向移动会聚光束的会聚点; 收敛状态检测部分，用于基于来自信息介质的光束的反射光或透射光产生表示光束在信息介质上的会聚状态的聚焦伺服信号; 聚焦伺服控制部分，用于基于聚焦伺服信号控制移动部分，使得光束在信息介质上达到预定的会聚状态; 以及聚焦引入部，用于使聚焦伺服控制部的控制接通，其中，在聚焦引入部确定会聚的情况下，聚焦引入部使聚焦伺服控制部的控制接通 光点的位置位于信息介质轴向偏差的最小速度位置附近。

公开(公告)号：US20090010126A1

公开(公告)日：2009-01-08

申请号：US12162196

申请日：2007-01-25

申请人： Kenji Fujiune ,  Jun Kikuchi

发明人： Kenji Fujiune ,  Jun Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0953

摘要： A disk motor which rotationally drives an optical disk; a rotational phase detector which detects a rotational phase thereof; an optical head having a collecting lens which collects an optical bean; a light detector and an LE signal generator which detect a position of the collecting lens in the optical head as a position signal; an LE signal memory recorder and an LE signal memory which store, in synchronization with a rotational phase to be detected by the rotational phase detector, the positional signal from the LE signal generator; an LE signal memory regenerator which outputs as a correction signal, in synchronization with a rotational phase to be detected, the positional signal which has already been detected; a subtractor; an LE signal filter, a drive circuit and a Tk actuator which move the collecting lens using a signal from the subtractor; and a low pass filter which reduces a high-frequency component of the correction signal are provided.

摘要翻译： 旋转驱动光盘的盘马达; 检测其旋转相位的旋转相位检测器; 具有聚光透镜的光头; 光检测器和LE信号发生器，其检测光头中的聚光透镜的位置作为位置信号; LE信号存储器和LE信号存储器，其与由旋转相位检测器检测的转动相位同步地存储来自LE信号发生器的位置信号; LE信号存储器再生器，其与被检测的转动相位同步地输出已经被检测的位置信号作为校正信号; 减法者 LE信号滤波器，驱动电路和Tk致动器，其使用来自减法器的信号来移动收集透镜; 并且提供降低校正信号的高频分量的低通滤波器。

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。

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：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。

公开(公告)号：US07218582B2

公开(公告)日：2007-05-15

申请号：US10735009

申请日：2003-12-12

申请人： Rie Takahashi ,  Takeharu Yamamoto ,  Takashi Kishimoto ,  Kenji Fujiune ,  Katsuya Watanabe

发明人： Rie Takahashi ,  Takeharu Yamamoto ,  Takashi Kishimoto ,  Kenji Fujiune ,  Katsuya Watanabe

IPC分类号： G11B7/00

CPC分类号： G11B7/094

摘要： An optical disc drive is used to read and/or write data from/on an optical disc having a data storage layer. The drive corrects electrical offset while reading and/or writing data. The drive updates a correction value based on an electrical offset detected at correcting operation or a value derived using electrical offset values that has been detected and stored, without detecting an electrical offset at correcting operation. Therefore, the optical disc drive can correct the electrical offset less often.

摘要翻译： 光盘驱动器用于从具有数据存储层的光盘上读取数据和/或写入数据。 驱动器在读取和/或写入数据时纠正电气偏移。 驱动器基于在校正操作中检测到​​的电偏移或使用已经被检测和存储的电偏移值导出的值而更新校正值，而不检测校正操作的电偏移。 因此，光盘驱动器可以更少地校正电偏移。

公开(公告)号：US07158452B2

公开(公告)日：2007-01-02

申请号：US10468270

申请日：2002-02-20

申请人： Hiromichi Ishibashi ,  Katsuya Watanabe ,  Kenji Fujiune ,  Shinichi Yamada ,  Yuuichi Kuze

发明人： Hiromichi Ishibashi ,  Katsuya Watanabe ,  Kenji Fujiune ,  Shinichi Yamada ,  Yuuichi Kuze

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。

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。