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：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：US07242648B2

公开(公告)日：2007-07-10

申请号：US10784318

申请日：2004-02-20

申请人： Shin-ichi Yamada ,  Yuuichi Kuze ,  Katsuya Watanabe ,  Kenji Kondo ,  Akira Yoshikawa

发明人： Shin-ichi Yamada ,  Yuuichi Kuze ,  Katsuya Watanabe ,  Kenji Kondo ,  Akira Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0953 ,  G11B7/0903

摘要： A tracking error signal generation device includes a splitting and convergence section for splitting an optical beam into a main beam and a sub beam; a two-portion main beam detection section for detecting the main beam; a main beam push-pull signal generation section for generating a main beam push-pull signal; a two-portion sub beam detection section for detecting the sub beam; a sub beam push-pull signal generation section for generating a sub beam push-pull signal; a displacement amount detection section for detecting a displacement amount of the main beam push-pull signal from a reference value based on the main beam push-pull signal and the sub beam push-pull signal; and a tracking error signal generation section for generating a tracking error signal by correcting either the main beam push-pull signal or the sub beam push-pull signal based on the displacement amount.

摘要翻译： 跟踪误差信号产生装置包括用于将光束分解成主光束和子光束的分离和会聚部分; 用于检测主光束的两部分主光束检测部分; 用于产生主光束推挽信号的主光束推挽信号产生部分; 用于检测子光束的两部分子光束检测部分; 子波束推挽信号产生部分，用于产生子波束推挽信号; 位移量检测部分，用于基于主光束推挽信号和子光束推挽信号，从基准值检测主光束推挽信号的位移量; 以及跟踪误差信号产生部分，用于通过基于位移量校正主光束推挽信号或子光束推挽信号来产生跟踪误差信号。

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。

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：US06567357B2

公开(公告)日：2003-05-20

申请号：US09839522

申请日：2001-04-20

申请人： Takashi Kishimoto ,  Yuuichi Kuze ,  Kenji Fujiune ,  Takeharu Yamamoto ,  Katsuya Watanabe

发明人： Takashi Kishimoto ,  Yuuichi Kuze ,  Kenji Fujiune ,  Takeharu Yamamoto ,  Katsuya Watanabe

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。

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。

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。