公开(公告)号：US08164998B2

公开(公告)日：2012-04-24

申请号：US12302068

申请日：2008-02-08

申请人： Yuuichi Kuze ,  Akira Yoshikawa ,  Katsuya Watanabe

发明人： Yuuichi Kuze ,  Akira Yoshikawa ,  Katsuya Watanabe

IPC分类号： G11B20/18

CPC分类号： G11B7/00375 ,  G11B7/00736 ,  G11B7/0948 ,  G11B20/1816 ,  G11B20/1883 ,  G11B2007/0013 ,  G11B2020/10925 ,  G11B2020/1826 ,  G11B2220/20 ,  G11B2220/237 ,  G11B2220/2537

摘要： The optical disc apparatus of this invention includes: an optical pickup, which irradiates an optical disc with a light beam and generates a light detection signal based on the beam reflected from the disc; a search section, which controls the pickup before data is written on a storage area of the disc, thereby adjusting the beam spot location and searching a reference one of information layers stacked for a defective area in the storage area of the disc; a defect decision section for detecting an error based on the detection signal and determining a portion of the storage area, where the error has occurred, as the defective area; a defect size measuring section for measuring the size of the defective area in an area of the reference layer and generating a defect information list indicating there is the defective area in the area of the reference layer; and a recording range control section for managing, by reference to the list, the storage area such that no data will be written on a perpendicularly projected area defined by projecting the defective area of the reference layer perpendicularly to another information layer.

摘要翻译： 本发明的光盘装置包括：光学拾取器，其用光束照射光盘，并且基于从光盘反射的光束产生光检测信号; 搜索部分，其在数据被写入盘的存储区域之前控制拾取，从而调整光束位置并搜索堆叠在盘的存储区域中的缺陷区域的信息层中的参考一个; 缺陷判定部分，用于基于检测信号检测错误，并确定发生错误的存储区域的一部分作为缺陷区域; 缺陷尺寸测量部分，用于测量参考层的区域中的缺陷区域的尺寸，并产生指示在参考层的区域中存在缺陷区域的缺陷信息列表; 以及记录范围控制部分，用于通过参考列表来管理存储区域，使得不会将数据写入垂直于参考层的缺陷区垂直于另一信息层定义的垂直投影区域。

公开(公告)号：US07969844B2

公开(公告)日：2011-06-28

申请号：US12301832

申请日：2007-07-09

申请人： Katsuya Watanabe ,  Akira Yoshikawa ,  Eiji Ueda ,  Hiroshige Ishibashi ,  Yuuichi Kuze

发明人： Katsuya Watanabe ,  Akira Yoshikawa ,  Eiji Ueda ,  Hiroshige Ishibashi ,  Yuuichi Kuze

IPC分类号： G11B27/36

CPC分类号： G11B7/00375 ,  G11B7/0948

摘要： An optical disc apparatus includes: a defect detecting section 124 for detecting, based on a light detection signal and with respect to a preset detection reference level, a fingerprint or a bubble on the disc 102 as a defect to output a defect detection signal; and a waveform shaping section 126 to output a hold signal that holds, in response to the defect detection signal, a signal from a tracking control section 109 at a level just before the defect has occurred. The apparatus is initially operated not to hold the signal from the tracking control section 109 even if there is a defect. But once a tracking failure has occurred during a read operation, settings are changed to hold the signal from the tracking control section 109 against the defect while the read operation is retried.

摘要翻译： 光盘装置包括：缺陷检测部分124，用于基于光检测信号和相对于预设检测参考电平检测盘102上的指纹或气泡作为缺陷以输出缺陷检测信号; 以及波形整形部分126，用于输出保持信号，该保持信号响应于缺陷检测信号，将来自跟踪控制部分109的信号保持在刚好在缺陷发生之前的水平。 即使存在缺陷，该装置最初也不会保持来自跟踪控制部分109的信号。 但是，一旦在读取操作期间发生跟踪故障，则在读取操作被重试时，改变设置以保持来自跟踪控制部分109的信号抵抗缺陷。

公开(公告)号：US07936645B2

公开(公告)日：2011-05-03

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： G11B7/00

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。

公开(公告)号：US20090109812A1

公开(公告)日：2009-04-30

申请号：US12297483

申请日：2007-04-20

申请人： Yuuichi Kuze ,  Katsuya Watanabe ,  Shinichi Yamada

发明人： Yuuichi Kuze ,  Katsuya Watanabe ,  Shinichi Yamada

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/0956

摘要： An object of this invention is to measure the tilt quantity of, and perform a tilt control on, an optical disc accurately without depending on the rotation control method.An optical disc drive includes: a motor for rotating an optical disc; an optical system for irradiating the optical disc with a light beam; a moving mechanism for moving the optical system along the radius of the optical disc; a focus control section for controlling movement of the optical system perpendicularly to the optical disc based on drive values, thereby focusing the light beam onto a storage layer of the optical disc; and a tilt control section for measuring the tilt quantities of the storage layer at multiple different radial locations on the optical disc based on drive values for the respective radial locations when the focus control section focuses the light beam there. When the tilt control section measures the tilt quantities, the motor keeps the rotational frequency of the optical disc constant and the tilt control section uses the drive values obtained at the respective radial locations.

摘要翻译： 本发明的目的是在不依赖于旋转控制方法的情况下精确地测量光盘的倾斜量并进行倾斜控制。 光盘驱动器包括：用于旋转光盘的马达; 用于用光束照射光盘的光学系统; 用于沿光盘的半径移动光学系统的移动机构; 焦点控制部分，用于基于驱动值来控制光学系统垂直于光盘的移动，从而将光束聚焦到光盘的存储层上; 以及倾斜控制部，用于当聚焦控制部将光束聚焦在那里时，基于各个径向位置的驱动值来测量光盘上的多个不同径向位置处的存储层的倾斜量。 当倾斜控制部分测量倾斜量时，马达保持光盘的旋转频率恒定，并且倾斜控制部分使用在各个径向位置处获得的驱动值。

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。

公开(公告)号：US20080068950A1

公开(公告)日：2008-03-20

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： G11B5/58

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：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：US08098556B2

公开(公告)日：2012-01-17

申请号：US12297483

申请日：2007-04-20

申请人： Yuuichi Kuze ,  Katsuya Watanabe ,  Shinichi Yamada

发明人： Yuuichi Kuze ,  Katsuya Watanabe ,  Shinichi Yamada

IPC分类号： G11B15/62 ,  G11B17/32 ,  G11B20/20 ,  G11B27/10 ,  G11B20/10

CPC分类号： G11B7/0945 ,  G11B7/0956

摘要： An object of this invention is to measure the tilt quantity of, and perform a tilt control on, an optical disc accurately without depending on the rotation control method.An optical disc drive includes: a motor for rotating an optical disc; an optical system for irradiating the optical disc with a light beam; a moving mechanism for moving the optical system along the radius of the optical disc; a focus control section for controlling movement of the optical system perpendicularly to the optical disc based on drive values, thereby focusing the light beam onto a storage layer of the optical disc; and a tilt control section for measuring the tilt quantities of the storage layer at multiple different radial locations on the optical disc based on drive values for the respective radial locations when the focus control section focuses the light beam there. When the tilt control section measures the tilt quantities, the motor keeps the rotational frequency of the optical disc constant and the tilt control section uses the drive values obtained at the respective radial locations.

摘要翻译： 本发明的目的是在不依赖于旋转控制方法的情况下精确地测量光盘的倾斜量并进行倾斜控制。 光盘驱动器包括：用于旋转光盘的马达; 用于用光束照射光盘的光学系统; 用于沿光盘的半径移动光学系统的移动机构; 焦点控制部分，用于基于驱动值来控制光学系统垂直于光盘的移动，从而将光束聚焦到光盘的存储层上; 以及倾斜控制部，用于当聚焦控制部将光束聚焦在那里时，基于各个径向位置的驱动值来测量光盘上的多个不同径向位置处的存储层的倾斜量。 当倾斜控制部分测量倾斜量时，马达保持光盘的旋转频率恒定，并且倾斜控制部分使用在各个径向位置处获得的驱动值。

公开(公告)号：US20090290463A1

公开(公告)日：2009-11-26

申请号：US12302068

申请日：2008-02-08

申请人： Yuuichi Kuze ,  Akira Yoshikawa ,  Katsuya Watanabe

发明人： Yuuichi Kuze ,  Akira Yoshikawa ,  Katsuya Watanabe

IPC分类号： G11B20/18

CPC分类号： G11B7/00375 ,  G11B7/00736 ,  G11B7/0948 ,  G11B20/1816 ,  G11B20/1883 ,  G11B2007/0013 ,  G11B2020/10925 ,  G11B2020/1826 ,  G11B2220/20 ,  G11B2220/237 ,  G11B2220/2537

摘要： The optical disc apparatus of this invention includes: an optical pickup, which irradiates an optical disc with a light beam and generates a light detection signal based on the beam reflected from the disc; a search section, which controls the pickup before data is written on a storage area of the disc, thereby adjusting the beam spot location and searching a reference one of information layers stacked for a defective area in the storage area of the disc; a defect decision section for detecting an error based on the detection signal and determining a portion of the storage area, where the error has occurred, as the defective area; a defect size measuring section for measuring the size of the defective area in an area of the reference layer and generating a defect information list indicating there is the defective area in the area of the reference layer; and a recording range control section for managing, by reference to the list, the storage area such that no data will be written on a perpendicularly projected area defined by projecting the defective area of the reference layer perpendicularly to another information layer.

摘要翻译： 本发明的光盘装置包括：光学拾取器，其用光束照射光盘，并且基于从光盘反射的光束产生光检测信号; 搜索部分，其在数据被写入盘的存储区域之前控制拾取，从而调整光束位置并搜索堆叠在盘的存储区域中的缺陷区域的信息层中的参考一个; 缺陷判定部分，用于基于检测信号检测错误，并确定发生错误的存储区域的一部分作为缺陷区域; 缺陷尺寸测量部分，用于测量参考层的区域中的缺陷区域的尺寸，并产生指示在参考层的区域中存在缺陷区域的缺陷信息列表; 以及记录范围控制部分，用于通过参考列表来管理存储区域，使得不会将数据写入垂直于参考层的缺陷区垂直于另一信息层定义的垂直投影区域。

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。