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：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：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：US20070040093A1

公开(公告)日：2007-02-22

申请号：US10596108

申请日：2004-11-25

申请人： Akira Yoshikawa ,  Katsuya Watanabe

发明人： Akira Yoshikawa ,  Katsuya Watanabe

IPC分类号： G02B27/40 ,  G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/08511 ,  G11B7/121

摘要： To provide an apparatus that can prevent an objective lens from colliding against a member of a disk drive, can get disk loading/unloading operations done quickly and can establish a focus controlled state swiftly. An information processing apparatus includes: a converging section for converging light; a shifting section for shifting the focus of the light by moving the converging section perpendicularly to an information storage layer of a storage medium responsive to a drive signal; a position control section for generating a position control signal to move the converging section at variable velocities; a focus control section for generating a focus control signal based on a light amount signal representing reflected light such that the focus is located in a focus controllable range; a switching section for selectively outputting the position control or focus control signal; and a driving section for outputting a drive signal responsive to the output signal. The switching section outputs the position control signal to shift the focus to the focus controllable range and the focus control signal.

摘要翻译： 为了提供能够防止物镜与盘驱动器的构件碰撞的装置，可以快速地进行盘加载/卸载操作，并可以迅速建立焦点控制状态。 一种信息处理设备，包括：用于会聚光的会聚部分; 移动部分，用于通过根据驱动信号使收敛部分垂直于存储介质的信息存储层移动聚焦; 位置控制部分，用于产生位置控制信号，以可变速度移动会聚部分; 聚焦控制部分，用于基于表示反射光的光量信号产生聚焦控制信号，使焦点位于聚焦可控范围内; 切换部，用于选择性地输出位置控制或聚焦控制信号; 以及用于响应于输出信号输出驱动信号的驱动部分。 切换部输出位置控制信号，将焦点移动到聚焦控制范围和聚焦控制信号。

公开(公告)号：US07276680B2

公开(公告)日：2007-10-02

申请号：US10596108

申请日：2004-11-25

申请人： Akira Yoshikawa ,  Katsuya Watanabe

发明人： Akira Yoshikawa ,  Katsuya Watanabe

IPC分类号： G02B27/40 ,  G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/08511 ,  G11B7/121

摘要： An information processing apparatus includes: a converging section for converging light; a shifting section for shifting the focus of the light by moving the converging section perpendicularly to an information storage layer of a storage medium responsive to a drive signal; a position control section for generating a position control signal to move the converging section at variable velocities; a focus control section for generating a focus control signal based on a light amount signal representing reflected light such that the focus is located in a focus controllable range; a switching section for selectively outputting the position control or focus control signal; and a driving section for outputting a drive signal responsive to the output signal.

摘要翻译： 一种信息处理设备，包括：用于会聚光的会聚部分; 移动部分，用于通过根据驱动信号使收敛部分垂直于存储介质的信息存储层移动聚焦; 位置控制部分，用于产生位置控制信号，以可变速度移动会聚部分; 聚焦控制部分，用于基于表示反射光的光量信号产生聚焦控制信号，使焦点位于聚焦可控范围内; 切换部，用于选择性地输出位置控制或聚焦控制信号; 以及用于响应于输出信号输出驱动信号的驱动部分。

公开(公告)号：US20090122669A1

公开(公告)日：2009-05-14

申请号：US12090540

申请日：2006-11-21

申请人： Junichi Minamino ,  Katsuya Watanabe ,  Akira Yoshikawa

发明人： Junichi Minamino ,  Katsuya Watanabe ,  Akira Yoshikawa

IPC分类号： G11B20/10

CPC分类号： G11B19/125 ,  G11B7/0045 ,  G11B7/0946 ,  G11B7/0948 ,  G11B19/045 ,  G11B2007/0006

摘要： An optical disc drive according to the present invention can write data on both a write-once disc and a rewritable disc. The drive includes: a disc recognizing section 110 for recognizing the type of a given optical disc as a write-once disc or a rewritable disc; and track skipping detection signal generating section, which outputs track skipping detection signal when a first condition on tracking error is satisfied if the given optical disc, on which data is being written, has turned out to be a write-once disc. On the other hand, if the given optical disc has turned out to be a rewritable disc, the track skipping detection signal generating section outputs track skipping detection signal when a second condition on tracking error, which is different from the first condition, is satisfied. A control section stops writing the data in response to the track skipping detection signal while the data is being written.

摘要翻译： 根据本发明的光盘驱动器可以在一次写入盘和可重写盘上写入数据。 驱动器包括：用于将给定光盘的类型识别为一次写入盘或可重写盘的盘识别部分110; 以及轨道跳过检测信号生成部，其中当正在写入数据的给定光盘已被证明是一次写入盘时，当满足跟踪误差的第一条件时，其输出轨道跳过检测信号。 另一方面，如果给出的光盘已经被证明是可重写盘，则当满足与第一条件不同的跟踪误差的第二条件时，轨道跳过检测信号产生部分输出轨道跳过检测信号。 当数据被写入时，控制部分响应于轨道跳过检测信号停止写入数据。

公开(公告)号：US08072852B2

公开(公告)日：2011-12-06

申请号：US12090540

申请日：2006-11-21

申请人： Junichi Minamino ,  Katsuya Watanabe ,  Akira Yoshikawa

发明人： Junichi Minamino ,  Katsuya Watanabe ,  Akira Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B19/125 ,  G11B7/0045 ,  G11B7/0946 ,  G11B7/0948 ,  G11B19/045 ,  G11B2007/0006

摘要： An optical disc drive according to the present invention can write data on both a write-once disc and a rewritable disc. The drive includes: a disc recognizing section 110 for recognizing the type of a given optical disc as a write-once disc or a rewritable disc; and track skipping detection signal generating section, which outputs track skipping detection signal when a first condition on tracking error is satisfied if the given optical disc, on which data is being written, has turned out to be a write-once disc. On the other hand, if the given optical disc has turned out to be a rewritable disc, the track skipping detection signal generating section outputs track skipping detection signal when a second condition on tracking error, which is different from the first condition, is satisfied. A control section stops writing the data in response to the track skipping detection signal while the data is being written.

摘要翻译： 根据本发明的光盘驱动器可以在一次写入盘和可重写盘上写入数据。 驱动器包括：用于将给定光盘的类型识别为一次写入盘或可重写盘的盘识别部分110; 以及轨道跳过检测信号生成部，其中当正在写入数据的给定光盘已被证明是一次写入盘时，当满足跟踪误差的第一条件时，其输出轨道跳过检测信号。 另一方面，如果给出的光盘已经被证明是可重写盘，则当满足与第一条件不同的跟踪误差的第二条件时，轨道跳过检测信号产生部分输出轨道跳过检测信号。 当数据被写入时，控制部分响应于轨道跳过检测信号停止写入数据。

公开(公告)号：US07864638B2

公开(公告)日：2011-01-04

申请号：US11575312

申请日：2005-10-20

申请人： Katsuya Watanabe ,  Akira Yoshikawa ,  Shin-ichi Yamada ,  Junichi Minamino

发明人： Katsuya Watanabe ,  Akira Yoshikawa ,  Shin-ichi Yamada ,  Junichi Minamino

IPC分类号： G11B7/00

CPC分类号： G11B7/0948 ,  G11B7/0941 ,  G11B2007/0013

摘要： An optical disk apparatus according to the present invention is capable of reading data from an optical disk 102 which has a plurality of information recording layers, including a first information recording layer whose distance from a disk surface is relatively small and a second information recording layer whose distance from the disk surface is relatively large. This optical disk apparatus includes: a focus control section 117 for causing a converging point of the light beam to be positioned on an arbitrary information recording layer of the optical disk 102; a tracking control section 118 for causing the converging point of the light beam to be positioned on a predetermined track of the information recording layer; and a gain switching section 108 capable of changing gain characteristics of at least one of the focus control section 117 and the tracking control section 118. The gain switching section 108 prescribes a gain crossover frequency when reading data from the first information recording layer to be a value which is lower than a gain crossover frequency when reading data from the second information recording layer.

摘要翻译： 根据本发明的光盘装置能够从具有多个信息记录层的光盘102读取数据，该多个信息记录层包括与盘表面的距离相对较小的第一信息记录层和第二信息记录层， 距磁盘表面的距离比较大。 该光盘装置包括：聚焦控制部117，用于使光束的会聚点位于光盘102的任意信息记录层上; 跟踪控制部分118，用于使光束的会聚点定位在信息记录层的预定轨道上; 以及能够改变焦点控制部分117和跟踪控制部分118中的至少一个的增益特性的增益切换部分108.增益切换部分108规定从第一信息记录层读取数据时的增益交叉频率为 该值在从第二信息记录层读取数据时低于增益交叉频率。

公开(公告)号：US20070253305A1

公开(公告)日：2007-11-01

申请号：US11575312

申请日：2005-10-20

申请人： Katsuya Watanabe ,  Akira Yoshikawa ,  Shin-ichi Yamada ,  Junichi Minamino

发明人： Katsuya Watanabe ,  Akira Yoshikawa ,  Shin-ichi Yamada ,  Junichi Minamino

IPC分类号： G11B7/09

CPC分类号： G11B7/0948 ,  G11B7/0941 ,  G11B2007/0013

摘要： An optical disk apparatus according to the present invention is capable of reading data from an optical disk 102 which has a plurality of information recording layers, including a first information recording layer whose distance from a disk surface is relatively small and a second information recording layer whose distance from the disk surface is relatively large. This optical disk apparatus includes: a focus control section 117 for causing a converging point of the light beam to be positioned on an arbitrary information recording layer of the optical disk 102; a tracking control section 118 for causing the converging point of the light beam to be positioned on a predetermined track of the information recording layer; and a gain switching section 108 capable of changing gain characteristics of at least one of the focus control section 117 and the tracking control section 118. The gain switching section 108 prescribes a gain crossover frequency when reading data from the first information recording layer to be a value which is lower than a gain crossover frequency when reading data from the second information recording layer.

摘要翻译： 根据本发明的光盘装置能够从具有多个信息记录层的光盘102读取数据，该多个信息记录层包括与盘表面的距离相对较小的第一信息记录层和第二信息记录层， 距磁盘表面的距离比较大。 该光盘装置包括：聚焦控制部117，用于使光束的会聚点位于光盘102的任意信息记录层上; 跟踪控制部分118，用于使光束的会聚点定位在信息记录层的预定轨道上; 以及能够改变焦点控制部分117和跟踪控制部分118中的至少一个的增益特性的增益切换部分108.增益切换部分108规定从第一信息记录层读取数据时的增益交叉频率为 该值在从第二信息记录层读取数据时低于增益交叉频率。