公开(公告)号：US20110235482A1

公开(公告)日：2011-09-29

申请号：US13128031

申请日：2009-12-07

申请人： Yusuke Kanatake ,  Tomo Kishigami ,  Yoshihiro Kiyose ,  Nobuo Takeshita

发明人： Yusuke Kanatake ,  Tomo Kishigami ,  Yoshihiro Kiyose ,  Nobuo Takeshita

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/094 ,  G11B7/0948 ,  G11B7/13925

摘要： An optical information processing method and apparatus performs a light irradiating and receiving step, a signal processing step, and an adjusting step of a spherical aberration and a focus offset on the basis of shift amount of first and second control devices and a performance evaluation value. The performance evaluation values for first, second, third and fourth points in an x and y coordinate system are detected, in which an x-coordinate is one of the shift amount of the first control device and the shift amount of the second control device and a y-coordinate is the other, the first point, second and third points having the same y-coordinate and different x-coordinates with each other, the fourth point being provided on a first straight line passing through the first point and being different from the first point.

摘要翻译： 光信息处理方法和装置基于第一和第二控制装置的移位量执行光照射和接收步骤，信号处理步骤和球面像差和聚焦偏移的调整步骤以及性能评估值。 检测x和y坐标系中的第一，第二，第三和第四点的性能评估值，其中x坐标是第一控制装置的移位量和第二控制装置的移位量之一，以及 y坐标是另一个，第一点，第二和第三点具有相同的y坐标和彼此不同的x坐标，第四点被提供在穿过第一点的第一直线上，并且不同于 第一点。

公开(公告)号：US08638646B2

公开(公告)日：2014-01-28

申请号：US13128031

申请日：2009-12-07

申请人： Yusuke Kanatake ,  Tomo Kishigami ,  Yoshihiro Kiyose ,  Nobuo Takeshita

发明人： Yusuke Kanatake ,  Tomo Kishigami ,  Yoshihiro Kiyose ,  Nobuo Takeshita

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/094 ,  G11B7/0948 ,  G11B7/13925

摘要： An optical information processing method and apparatus performs a light irradiating and receiving step, a signal processing step, and an adjusting step of a spherical aberration and a focus offset on the basis of shift amount of first and second control devices and a performance evaluation value. The performance evaluation values for first, second, third and fourth points in an x and y coordinate system are detected, in which an x-coordinate is one of the shift amount of the first control device and the shift amount of the second control device and a y-coordinate is the other, the first point, second and third points having the same y-coordinate and different x-coordinates with each other, the fourth point being provided on a first straight line passing through the first point and being different from the first point.

摘要翻译： 光信息处理方法和装置基于第一和第二控制装置的移位量执行光照射和接收步骤，信号处理步骤和球面像差和聚焦偏移的调整步骤以及性能评估值。 检测x和y坐标系中的第一，第二，第三和第四点的性能评估值，其中x坐标是第一控制装置的移位量和第二控制装置的移位量之一，以及 y坐标是另一个，第一点，第二和第三点具有相同的y坐标和彼此不同的x坐标，第四点被提供在穿过第一点的第一直线上，并且不同于 第一点。

公开(公告)号：US08437233B2

公开(公告)日：2013-05-07

申请号：US13642856

申请日：2010-12-15

申请人： Yusuke Kanatake ,  Tomo Kishigami ,  Toshiya Matozaki ,  Nobuo Takeshita

发明人： Yusuke Kanatake ,  Tomo Kishigami ,  Toshiya Matozaki ,  Nobuo Takeshita

IPC分类号： G11B11/00

CPC分类号： G11B7/0945 ,  G11B7/08511 ,  G11B7/13925 ,  G11B2007/0013

摘要： An optical recording/reproduction method and device that can perform control for optimizing the amount of spherical aberration in a multilayered optical disc in a short period of time. When the objective lens is displaced in the focusing direction, the amplitude value of the focusing error signal detected just after leaving the focal position of a given first recording layer and the amplitude value of the focusing error signal detected just before passing through the focal position of a given second recording layer other than the first recording layer are measured with a particular spherical aberration, the amplitude ratio of amplitude values is calculated, the difference between spherical aberration and the optimal spherical aberration for the second recording layer is approximated as a function of the amplitude ratio, the optimal spherical aberration is calculated on the basis of this approximation, and the spherical aberration is set.

摘要翻译： 一种能够在短时间内对多层光盘中的球面像差的量进行优化的光记录再现方法和装置。 当物镜在聚焦方向上移位时，恰好在离开给定第一记录层的焦点位置之后检测到的聚焦误差信号的振幅值和刚刚通过焦点位置之前检测到的聚焦误差信号的振幅值 以特定的球面像差测量除了第一记录层之外的给定的第二记录层，计算振幅值的幅度比，将第二记录层的球面像差和最佳球面差之差近似为 基于该近似值计算最佳球面像差，并设置球面像差。

公开(公告)号：US08358568B2

公开(公告)日：2013-01-22

申请号：US13203799

申请日：2010-04-07

申请人： Tomo Kishigami ,  Koichi Ikuta ,  Nobuo Takeshita ,  Yoshihiro Kiyose ,  Yusuke Kanatake

发明人： Tomo Kishigami ,  Koichi Ikuta ,  Nobuo Takeshita ,  Yoshihiro Kiyose ,  Yusuke Kanatake

IPC分类号： G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/005 ,  G11B7/1267

摘要： According to a method for setting the laser beam power applied to reproduce information recorded on an optical disc, information recorded in a region on the optical disc is reproduced using three or more test reproduction powers (S22B), the number of reproductions until the degradation of the quality of the reproduced signal reaches a prescribed value is determined as the degradation number of reproductions (S22F), the relation between the test reproduction power and the degradation number of reproductions is approximated by a curve, and a reproduction power restricting the degradation of the reproduced signal quality to a predetermined amount or less over a certain guaranteed number of reproductions is determined (S25F). In optical reproduction from an optical disc on which information is recorded, the optimum power of irradiation for reproduction can be set, and degradation of the information due to the reproducing light can be prevented.

摘要翻译： 根据用于设置用于再现记录在光盘上的信息的激光束功率的方法，使用三个或更多个测试再现功率（S22B）再现记录在光盘上的区域中的信息，直到再次使用 将再现信号的质量达到规定值确定为再现的劣化次数（S22F），则通过曲线近似测试再现功率和再现的退化次数之间的关系，并且限制了再现的劣化 确定在一定的保证数量的再现的再现信号质量达预定量或更小的值（S25F）。 在从记录有信息的光盘进行光学再现时，可以设置用于再现的照射的最佳功率，并且可以防止由于再现光引起的信息的劣化。

公开(公告)号：US08125869B2

公开(公告)日：2012-02-28

申请号：US12153965

申请日：2008-05-28

申请人： Yusuke Kanatake ,  Tomo Kishigami ,  Nobuo Takeshita

发明人： Yusuke Kanatake ,  Tomo Kishigami ,  Nobuo Takeshita

IPC分类号： G11B7/00

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： To adjust the parameters of a write strategy for recording data on an optical recording medium, the jitter value of a reproduced signal obtained from recorded data is detected. If the jitter value exceeds a prescribed threshold, a write strategy parameter having a comparatively small effect on the jitter value is adjusted, and subsequent data are written on the recording medium using the adjusted parameter. Parameters are selected for adjustment in ascending order of their effect on the jitter value. Stable data recording can thereby be carried out without significant jitter degradation.

摘要翻译： 为了调整用于在光学记录介质上记录数据的写入策略的参数，检测从记录数据获得的再现信号的抖动值。 如果抖动值超过规定的阈值，则调整对抖动值的影响较小的写入策略参数，并且使用调整后的参数将后续的数据写入记录介质。 选择参数来调整其对抖动值的影响的升序。 从而可以在没有显着的抖动劣化的情况下执行稳定的数据记录。

公开(公告)号：US20080298195A1

公开(公告)日：2008-12-04

申请号：US12153965

申请日：2008-05-28

申请人： Yusuke Kanatake ,  Tomo Kishigami ,  Nobuo Takeshita

发明人： Yusuke Kanatake ,  Tomo Kishigami ,  Nobuo Takeshita

IPC分类号： G11B20/18

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： To adjust the parameters of a write strategy for recording data on an optical recording medium, the jitter value of a reproduced signal obtained from recorded data is detected. If the jitter value exceeds a prescribed threshold, a write strategy parameter having a comparatively small effect on the jitter value is adjusted, and subsequent data are written on the recording medium using the adjusted parameter. Parameters are selected for adjustment in ascending order of their effect on the jitter value. Stable data recording can thereby be carried out without significant jitter degradation.

摘要翻译： 为了调整用于在光学记录介质上记录数据的写入策略的参数，检测从记录数据获得的再现信号的抖动值。 如果抖动值超过规定的阈值，则调整对抖动值的影响较小的写入策略参数，并且使用调整后的参数将后续的数据写入记录介质。 选择参数来调整其对抖动值的影响的升序。 从而可以在没有显着的抖动劣化的情况下执行稳定的数据记录。

公开(公告)号：US20130044576A1

公开(公告)日：2013-02-21

申请号：US13642856

申请日：2010-12-15

申请人： Yusuke Kanatake ,  Tomo Kishigami ,  Toshiya Matozaki ,  Nobuo Takeshita

发明人： Yusuke Kanatake ,  Tomo Kishigami ,  Toshiya Matozaki ,  Nobuo Takeshita

IPC分类号： G11B7/1392

CPC分类号： G11B7/0945 ,  G11B7/08511 ,  G11B7/13925 ,  G11B2007/0013

摘要： An optical recording/reproduction method and device that can perform control for optimizing the amount of spherical aberration in a multilayered optical disc in a short period of time. When the objective lens is displaced in the focusing direction, the amplitude value of the focusing error signal detected just after leaving the focal position of a given first recording layer and the amplitude value of the focusing error signal detected just before passing through the focal position of a given second recording layer other than the first recording layer are measured with a particular spherical aberration, the amplitude ratio of amplitude values is calculated, the difference between spherical aberration and the optimal spherical aberration for the second recording layer is approximated as a function of the amplitude ratio, the optimal spherical aberration is calculated on the basis of this approximation, and the spherical aberration is set.

摘要翻译： 一种能够在短时间内对多层光盘中的球面像差的量进行优化的光记录再现方法和装置。 当物镜在聚焦方向上移位时，恰好在离开给定第一记录层的焦点位置之后检测到的聚焦误差信号的振幅值和刚刚通过焦点位置之前检测到的聚焦误差信号的振幅值 以特定的球面像差测量除了第一记录层之外的给定的第二记录层，计算振幅值的幅度比，将第二记录层的球面像差和最佳球面差之差近似为 基于该近似值计算最佳球面像差，并设置球面像差。

公开(公告)号：US20110317534A1

公开(公告)日：2011-12-29

申请号：US13203799

申请日：2010-04-07

申请人： Tomo Kishigami ,  Koichi Ikuta ,  Nobuo Takeshita ,  Yoshihiro Kiyose ,  Yusuke Kanatake

发明人： Tomo Kishigami ,  Koichi Ikuta ,  Nobuo Takeshita ,  Yoshihiro Kiyose ,  Yusuke Kanatake

IPC分类号： G11B27/36

CPC分类号： G11B7/00736 ,  G11B7/005 ,  G11B7/1267

摘要： According to a method for setting the laser beam power applied to reproduce information recorded on an optical disc, information recorded in a region on the optical disc is reproduced using three or more test reproduction powers (S22B), the number of reproductions until the degradation of the quality of the reproduced signal reaches a prescribed value is determined as the degradation number of reproductions (S22F), the relation between the test reproduction power and the degradation number of reproductions is approximated by a curve, and a reproduction power restricting the degradation of the reproduced signal quality to a predetermined amount or less over a certain guaranteed number of reproductions is determined (S25F). In optical reproduction from an optical disc on which information is recorded, the optimum power of irradiation for reproduction can be set, and degradation of the information due to the reproducing light can be prevented.

摘要翻译： 根据用于设置用于再现记录在光盘上的信息的激光束功率的方法，记录在光盘上的区域中的信息使用三个或更多个测试再现功率（S22B）被再现，直到再现的次数 将再现信号的质量达到规定值确定为再现的劣化次数（S22F），则通过曲线近似测试再现功率和再现的退化次数之间的关系，并且限制了再现的劣化 确定在一定的保证数量的再现的再现信号质量达预定量或更小的值（S25F）。 在从记录有信息的光盘进行光学再现时，可以设置用于再现的照射的最佳功率，并且可以防止由于再现光引起的信息的劣化。