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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。
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公开(公告)号：US20120014237A1
公开(公告)日：2012-01-19
申请号：US13258538
申请日：2010-05-21
申请人： Kenya Nakai , Masayuki Ohmaki , Nobuo Takeshita
发明人： Kenya Nakai , Masayuki Ohmaki , Nobuo Takeshita
IPC分类号： G11B20/10
CPC分类号： G11B7/005 , G11B7/131 , G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10222 , G11B20/10296 , G11B20/10416 , G11B2220/2595
摘要： A first signal is detected from the central part of a light beam returning from a super-resolution optical disc; a second signal is detected from a peripheral part in a direction corresponding to a track on the super-resolution optical disc; a gain adjustment unit is provided to adjust the amplitude of the first signal; a subtraction unit is provided to generate a third signal by subtracting, from the second signal, the first signal with the amplitude adjusted by the gain adjustment unit; and an unit is provided to generate a reproduced signal by combining the first signal and a signal obtained by delaying the third signal.
摘要翻译： 从从超分辨率光盘返回的光束的中心部分检测第一信号; 在与超分辨率光盘上的轨道对应的方向上从外围部分检测第二信号; 提供增益调整单元来调整第一信号的幅度; 减法单元被提供以通过从第二信号中减去由增益调整单元调整的幅度的第一信号来产生第三信号; 并且提供单元以通过组合第一信号和通过延迟第三信号而获得的信号来产生再现信号。
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公开(公告)号：US08018812B2
公开(公告)日：2011-09-13
申请号：US11878463
申请日：2007-07-24
IPC分类号： G11B7/20
CPC分类号： G11B27/329 , G11B7/00736 , G11B7/0079 , G11B7/0945 , G11B7/1275 , G11B7/24038 , G11B19/122 , G11B20/1217 , G11B27/105 , G11B2007/0006 , G11B2007/0013 , G11B2220/235
摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.
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公开(公告)号：US07969840B2
公开(公告)日：2011-06-28
申请号：US12182735
申请日：2008-07-30
申请人： Nobuo Takeshita , Osamu Tsukahara , Tomo Kishigami
发明人： Nobuo Takeshita , Osamu Tsukahara , Tomo Kishigami
IPC分类号： G11B7/00
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。
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公开(公告)号：US07907493B2
公开(公告)日：2011-03-15
申请号：US11978641
申请日：2007-10-30
IPC分类号： G11B7/00
CPC分类号： G11B27/329 , G11B7/00736 , G11B7/0079 , G11B7/0945 , G11B7/1275 , G11B7/24038 , G11B19/122 , G11B20/1217 , G11B27/105 , G11B2007/0006 , G11B2007/0013 , G11B2220/235
摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.
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公开(公告)号：US07889614B2
公开(公告)日：2011-02-15
申请号：US11978645
申请日：2007-10-30
IPC分类号： G11B7/00
CPC分类号： G11B27/329 , G11B7/00736 , G11B7/0079 , G11B7/0945 , G11B7/1275 , G11B7/24038 , G11B19/122 , G11B20/1217 , G11B27/105 , G11B2007/0006 , G11B2007/0013 , G11B2220/235
摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.
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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。
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公开(公告)号：US20080025183A1
公开(公告)日：2008-01-31
申请号：US11579832
申请日：2005-08-19
CPC分类号： G11B27/329 , G11B7/00736 , G11B7/0079 , G11B7/0945 , G11B7/1275 , G11B7/24038 , G11B19/122 , G11B20/1217 , G11B27/105 , G11B2007/0006 , G11B2007/0013 , G11B2220/235
摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.
摘要翻译： 在具有符合多个不同光盘标准的信息层的多层光盘中，由于每个信息层的类型不被记录在其他信息层中，所以在兼容的光盘装置的读写操作中，符合多个 光盘标准，每次被访问的信息层都改变时，必须读取信息层的类型，并选择一种生成适合于信息层类型的跟踪误差信号的方法，因此访问需要时间。 为了解决上述问题，在根据本发明的具有符合多个不同光盘标准的信息层的光学多层盘中，在信息层之一中的区域中记录关于其他信息层的信息 。 可以通过使用该信息来选择跟踪误差信号生成方法来减少访问其他信息层所需的时间。
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公开(公告)号：US20070274183A1
公开(公告)日：2007-11-29
申请号：US11822241
申请日：2007-07-03
IPC分类号： G11B7/00
CPC分类号： G11B7/24038 , G11B7/00736 , G11B7/0079
摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.
摘要翻译： 在具有符合多个不同光盘标准的信息层的多层光盘中，由于每个信息层的类型不被记录在其他信息层中，所以在兼容的光盘装置的读写操作中，符合多个 光盘标准，每次被访问的信息层都改变时，必须读取信息层的类型，并选择一种生成适合于信息层类型的跟踪误差信号的方法，因此访问需要时间。 为了解决上述问题，在根据本发明的具有符合多个不同光盘标准的信息层的光学多层盘中，在信息层之一中的区域中记录关于其他信息层的信息 。 可以通过使用该信息来选择跟踪误差信号生成方法来减少访问其他信息层所需的时间。
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公开(公告)号：US07272083B2
公开(公告)日：2007-09-18
申请号：US09984131
申请日：2001-10-29
申请人： Nobuo Takeshita
发明人： Nobuo Takeshita
CPC分类号： G11B7/1376 , G11B7/0948 , G11B7/1353 , G11B7/1374 , G11B7/1381 , G11B7/13927 , G11B2007/13727
摘要： On an optical disk in a recording and/or playback apparatus, the position at which the thickness error of a light transmission layer is in the optical axis of an objective lens 11, and the position at which the recording/playback of information is performed is in the optical axis of a two-group objective lens 20, so that they are spaced apart from each other, making it impossible to accurately detect the thickness error at the position where the recording/playback of information is performed. Further, to chronologically compensate for the space between them, an excess circuit is required. In view of this, a first reflection light 107a reflected by a medium surface 106a of the optical disk is received to detect the focal error with respect to the medium surface, and a second reflection light 107b reflected by the surface of a light transmission layer 106b formed on the medium surface 106a to detect the focal error with respect to the surface of the light transmission layer 106b. And, in correspondence with the focal error with respect to the surface of the light transmission layer 106a, the collimator lens 103 is moved.
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