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：US20120002523A1

公开(公告)日：2012-01-05

申请号：US13174990

申请日：2011-07-01

申请人： Tomo KISHIGAMI ,  Nobuo TAKESHITA

发明人： Tomo KISHIGAMI ,  Nobuo TAKESHITA

IPC分类号： G11B7/125

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B2007/0013

摘要： Before new information is recorded on a comparatively deep recording layer in a multilayer optical recording disc, a predetermined target value of a reproduced signal parameter is read from the disc itself or from a separate storage unit, the recorded/unrecorded states of the shallower recording layers are determined, and the target value is corrected on the basis of these states. The correction is based on a predetermined difference in the value of the reproduced signal parameter caused by a difference in the recorded/unrecorded states of the shallower recording layers. The corrected target value is used in calibration of the recording power by means of a test write. This correction of the target value permits reliable recording on a multilayer optical disc without delaying the start of the recording process.

摘要翻译： 在新信息被记录在多层光学记录盘中相对较深的记录层上之前，再现信号参数的预定目标值从盘本身或单独的存储单元读取，较浅记录层的记录/未记录状态 并且基于这些状态来校正目标值。 校正基于由较浅记录层的记录/未记录状态的差引起的再现信号参数的值的预定差异。 通过测试写入，校正目标值用于校准记录功率。 目标值的这种校正允许在多层光盘上的可靠记录，而不延迟开始记录处理。

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。

公开(公告)号：US20080062842A1

公开(公告)日：2008-03-13

申请号：US11587697

申请日：2005-04-26

申请人： Tomo Kishigami ,  Osamu Tsukahara ,  Yoshihiro Kiyose

发明人： Tomo Kishigami ,  Osamu Tsukahara ,  Yoshihiro Kiyose

IPC分类号： G11B7/0045

CPC分类号： G11B7/00456

摘要： In a dye-type optical recording medium, a write strategy for use in recording is determined based on recommended write strategy parameters recorded on an optical disk (160) and the characteristics of the optical recording device, and recording is carried out on the optical disk (160) according to the determined write strategy. In a medium of the phase change type, a power ratio and modulation degree for use in recording are determined from a recommended pulse width value in the recommended write strategy parameters recorded in the optical disk (160), the recommended power ratio value, the recommended recording power value, and the characteristics of the optical recording device, and recording is carried out on the optical disk (160) according to the power ratio value and modulation degree value thus determined. Optimal recording can be carried out even on an optical disk for which the optimal write strategy information has not been determined in advance, without the need to store write strategy information suitable for each and every optical disk.

摘要翻译： 在染料型光学记录介质中，基于记录在光盘（160）上的推荐写入策略参数和光学记录装置的特性来确定用于记录的写入策略，并且在光盘上执行记录 （160）根据确定的写策略。 在相变型的介质中，根据记录在光盘（160）中的推荐写入策略参数中的推荐脉冲宽度值，推荐功率比值，推荐的功率比，推荐的功率比和调制度 记录功率值和光学记录装置的特性，并且根据如此确定的功率比值和调制度值在光盘（160）上进行记录。 即使在没有预先确定最佳写入策略信息的光盘上也可以进行最佳记录，而不需要存储适合于每个光盘的写入策略信息。

公开(公告)号：US20070159942A1

公开(公告)日：2007-07-12

申请号：US10587913

申请日：2004-08-24

申请人： Nobuo Takeshita ,  Osamu Tsukahara ,  Tomo Kishigami

发明人： Nobuo Takeshita ,  Osamu Tsukahara ,  Tomo Kishigami

IPC分类号： G11B7/12

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B2007/0013

摘要： A recording method for an optical disc having at least three recording layers (11, 12, 13, 14), in which test recording areas are formed in the odd-numbered recording layers (11, 13) and the even-numbered recording layers (12, 14) in positions that are mutually non-overlapping in the thickness direction of the optical disc, the test recording areas in the odd-numbered recording layers are formed in positions mutually aligned in the thickness direction, and the test recording areas in the even-numbered recording layers are formed in positions mutually aligned in the thickness direction. The time for test recording for determining the optimal recording power can be shortened.

摘要翻译： 一种用于具有至少三个记录层（11,12,13,14）的光盘的记录方法，其中测试记录区域形成在奇数编号记录层（11,13）和偶数记录层（ 12,14）在光盘的厚度方向上彼此不重叠的位置中，奇数编号记录层中的测试记录区域形成在厚度方向上相互排列的位置，并且测试记录区域 偶数编号的记录层形成在厚度方向上相互排列的位置上。 可以缩短用于确定最佳记录功率的测试记录的时间。

公开(公告)号：US08295136B2

公开(公告)日：2012-10-23

申请号：US13174990

申请日：2011-07-01

申请人： Tomo Kishigami ,  Nobuo Takeshita

发明人： Tomo Kishigami ,  Nobuo Takeshita

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B2007/0013

摘要： Before new information is recorded on a comparatively deep recording layer in a multilayer optical recording disc, a predetermined target value of a reproduced signal parameter is read from the disc itself or from a separate storage unit, the recorded/unrecorded states of the shallower recording layers are determined, and the target value is corrected on the basis of these states. The correction is based on a predetermined difference in the value of the reproduced signal parameter caused by a difference in the recorded/unrecorded states of the shallower recording layers. The corrected target value is used in calibration of the recording power by means of a test write. This correction of the target value permits reliable recording on a multilayer optical disc without delaying the start of the recording process.

摘要翻译： 在新信息被记录在多层光学记录盘中相对较深的记录层上之前，再现信号参数的预定目标值从盘本身或单独的存储单元读取，较浅记录层的记录/未记录状态 并且基于这些状态来校正目标值。 校正基于由较浅记录层的记录/未记录状态的差引起的再现信号参数的值的预定差异。 通过测试写入，校正目标值用于校准记录功率。 目标值的这种校正允许在多层光盘上的可靠记录，而不延迟开始记录处理。

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：US07957238B2

公开(公告)日：2011-06-07

申请号：US10541628

申请日：2004-06-04

申请人： Tomo Kishigami ,  Nobuo Takeshita ,  Osamu Tsukahara

发明人： Tomo Kishigami ,  Nobuo Takeshita ,  Osamu Tsukahara

IPC分类号： G11B20/10 ,  G11B5/09

CPC分类号： G11B7/00456 ,  G11B7/00736

摘要： A write strategy for use in recording is determined from recommended write strategy parameters recorded on an optical disk (160) and the characteristics of the optical recording device used in recording; a recommended asymmetry value is determined from the difference between the numerical aperture NA1 of the objective lens, which is a recording condition of the recommended asymmetry value recorded on the optical disk (160) and the numerical aperture NA2 of the objective lens (150) of the optical recording device used in recording, and recording is carried out on the optical disk (160) according to the write strategy and asymmetry value thus determined. Optimal recording can be carried out even on an optical disk for which the optimal write strategy information has not been determined in advance, without the need to store write strategy information suitable for each and every optical disk.

摘要翻译： 用于记录的写入策略由记录在光盘（160）上的推荐写入策略参数和记录中使用的光学记录装置的特性来确定。 根据作为记录在光盘（160）上的推荐不对称值的记录条件的物镜的数值孔径NA1与物镜（150）的数值孔径NA2之间的差确定推荐的不对称值， 根据如此确定的写入策略和不对称值，在光盘（160）上进行用于记录和记录的光记录装置。 即使在没有预先确定最佳写入策略信息的光盘上也可以进行最佳记录，而不需要存储适合于每个光盘的写入策略信息。

公开(公告)号：US20110038239A1

公开(公告)日：2011-02-17

申请号：US12989297

申请日：2009-01-26

申请人： Yoshihiro Kiyose ,  Tomo Kishigami

发明人： Yoshihiro Kiyose ,  Tomo Kishigami

IPC分类号： G11B7/00

CPC分类号： G11B7/0956

摘要： A recorded area is reproduced during a suspension of a recording operation; when degradation of the recorded signal is detected (S4, S5) by the signal quality detection means (16), a tilt adjustment is performed in the recorded area, the signal quality of the recorded signal is detected after the tilt adjustment (S6), and if it is still degraded, a recording parameter is altered (step S7). The need to obtain tilt adjustment values for tilt corrections at a plurality of radial positions in advance is eliminated, resulting in reduced apparatus overhead and better recording quality.

摘要翻译： 在记录操作暂停期间再现记录区域; 当由信号质量检测装置（16）检测到记录信号的劣化（S4，S5）时，在记录区域中执行倾斜调整，在倾斜调整之后检测记录信号的信号质量（S6） 如果仍然劣化，则改变记录参数（步骤S7）。 预先获得在多个径向位置处获得用于倾斜校正的倾斜调整值的需要，从而减少了设备开销和更好的记录质量。

公开(公告)号：US07447130B2

公开(公告)日：2008-11-04

申请号：US10574510

申请日：2005-05-26

申请人： Tomo Kishigami ,  Yoshihiro Kiyose ,  Nobuo Takeshita ,  Toru Yoshihara ,  Masaharu Ogawa

发明人： Tomo Kishigami ,  Yoshihiro Kiyose ,  Nobuo Takeshita ,  Toru Yoshihara ,  Masaharu Ogawa

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B7/0953 ,  G11B7/24038 ,  G11B2007/0013

摘要： An optical disc on which information can be recorded by recording light has a first recording layer (102) and a second recording layer (103) disposed behind the first recording layer as viewed by the recording light; the first recording layer and the second recording layer have respective power adjustment areas (P1, P2) that are used to adjust the power of the recording light to the optimal recording power at the time of recording of information on each recording layer; a prewrite area (PW) is provided in correspondence to the power adjustment area (P2) used for optimal power adjustment in the second recording layer and restricted areas (A1, A2) on both sides of that power adjustment area (P2). The restricted areas (A1, A2) allow for the diameter of the recording light beam and for lamination misalignment. This configuration enables stable test recording to be carried out in a short time on an optical disc having multiple recording layers.

摘要翻译： 通过记录光能够记录信息的光盘具有由记录光所观察的设置在第一记录层后面的第一记录层（102）和第二记录层（103） 第一记录层和第二记录层具有各自的功率调整区域（P 1，P 2），用于在记录每个记录层上的信息时将记录光的功率调节到最佳记录功率; 对应于用于第二记录层中的最佳功率调整的功率调整区域（P 2）和在该功率调整区域（P 2）的两侧的限制区域（A 1，A 2），提供预写区域（PW） ）。 限制区域（A 1，A 2）允许记录光束的直径和层压未对准。 该配置使得能够在具有多个记录层的光盘上在短时间内进行稳定的测试记录。