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公开(公告)号：US08233374B2
公开(公告)日：2012-07-31
申请号：US12600580
申请日：2008-05-15
IPC分类号： G11B3/74
CPC分类号： G11B7/24038 , G11B7/0037 , G11B7/08511 , G11B2007/0013 , Y10T428/21
摘要： In a multi-layer optical disc, having three (3) or more recording layers thereof, for enabling an easy focus lead-in operation onto a desired recording layer, reflectivity of respective recording layers are so determined that a ratio between the reflectivity of the desired recording layer and the reflectivity of other recording layers is equal or greater than a predetermined value, upon basis of the reflectivity of the other recording layers.
摘要翻译： 在具有三（3）个或更多个记录层的多层光盘中，为了能够容易地将焦点导入到期望的记录层上，各个记录层的反射率被确定为： 基于其他记录层的反射率，期望的记录层和其它记录层的反射率等于或大于预定值。
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公开(公告)号：US20100260026A1
公开(公告)日：2010-10-14
申请号：US12600580
申请日：2008-05-15
IPC分类号： G11B3/74
CPC分类号： G11B7/24038 , G11B7/0037 , G11B7/08511 , G11B2007/0013 , Y10T428/21
摘要： In a multi-layer optical disc, having three (3) or more recording layers thereof, for enabling an easy focus lead-in operation onto a desired recording layer, reflectivity of respective recording layers are so determined that a ratio between the reflectivity of the desired recording layer and the reflectivity of other recording layers is equal or greater than a predetermined value, upon basis of the reflectivity of the other recording layers.
摘要翻译： 在具有三（3）个或更多个记录层的多层光盘中，为了能够容易地将焦点导入到期望的记录层上，各个记录层的反射率被确定为： 基于其他记录层的反射率，期望的记录层和其它记录层的反射率等于或大于预定值。
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3.发明授权公开(公告)号：US07787334B2
公开(公告)日：2010-08-31
申请号：US11998549
申请日：2007-11-30
申请人： Takashi Kikukawa , Koji Mishima , Tsutomu Aoyama , Hidetake Itoh
发明人： Takashi Kikukawa , Koji Mishima , Tsutomu Aoyama , Hidetake Itoh
IPC分类号： G11B7/00
CPC分类号： G11B7/007 , G11B7/0045 , G11B7/24038 , G11B7/24085 , G11B20/1883 , G11B2007/0013 , G11B2220/20 , G11B2220/215 , G11B2220/235 , G11B2220/2537
摘要： When there is a defect area in a specific recording layer, recording of information is continued and reduction in a recording rate is restrained. In an optical recording method for recording information on a multilayer optical recording medium having a plurality of recording layers by irradiating the recording layer with a beam spot, any recording layer is set as an escape recording layer. When a defect area is detected while information is recorded on another recording layer except for the escape recording layer, the beam spot moves to the escape recording layer to continue recording the information.
摘要翻译： 当在特定记录层中存在缺陷区域时，继续记录信息并抑制记录速率的降低。 在通过用光斑照射记录层而在具有多个记录层的多层光学记录介质上记录信息的光学记录方法中，将任何记录层设置为逃逸记录层。 当在除了逃逸记录层之外的另一记录层上记录信息时检测到缺陷区域时，光束点移动到逃逸记录层以继续记录信息。
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公开(公告)号：US08238214B2
公开(公告)日：2012-08-07
申请号：US12451526
申请日：2008-04-16
申请人： Koji Mishima , Tsutomu Aoyama , Takashi Kikukawa
发明人： Koji Mishima , Tsutomu Aoyama , Takashi Kikukawa
IPC分类号： G11B7/00
CPC分类号： G11B7/243 , G11B7/24038 , G11B7/259 , G11B2007/24312 , G11B2007/24314 , G11B2007/2432 , G11B2007/25706 , G11B2007/25708 , G11B2007/25713 , G11B2007/25715
摘要： An optical recording medium which includes three or more information layers and has a higher stack density of information layers than before in the direction of thickness while reducing crosstalk during reproduction, and a method for reading the optical recording medium are provided. The optical recording medium has a three-layer structure which includes a substrate, a first information layer, a first spacer layer, a second information layer, a second spacer layer, a third information layer, and a cover layer thinner than the substrate, with these layers being stacked in that order over the substrate, wherein the following Equation (I) is satisfied: (R2×R3×R2)/R1≦0.0032 Equation (I) where R1 is the reflectivity of the first information layer, R2 is the reflectivity of the second information layer, and R3 is the reflectivity of the third information layer, and the first spacer layer and the second spacer layer are equal to each other in thickness.
摘要翻译： 提供了一种光记录介质，其包括三个或更多个信息层，并且在减小再现期间的串扰的同时，在厚度方向上具有比以前更高的堆叠密度的信息层，以及读取光学记录介质的方法。 光记录介质具有三层结构，其包括基板，第一信息层，第一间隔层，第二信息层，第二间隔层，第三信息层和比基板更薄的覆盖层， 这些层在衬底上按顺序层叠，其中满足以下等式（I）：（R2×R3×R2）/R1≦̸0.0032等式（I）其中R1是第一信息层的反射率，R2是 第二信息层的反射率，R3是第三信息层的反射率，第一间隔层和第二间隔层的厚度相等。
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5.发明申请公开(公告)号：US20080130444A1
公开(公告)日：2008-06-05
申请号：US11998549
申请日：2007-11-30
申请人： Takashi Kikukawa , Koji Mishima , Tsutomu Aoyama , Hidetake Itoh
发明人： Takashi Kikukawa , Koji Mishima , Tsutomu Aoyama , Hidetake Itoh
CPC分类号： G11B7/007 , G11B7/0045 , G11B7/24038 , G11B7/24085 , G11B20/1883 , G11B2007/0013 , G11B2220/20 , G11B2220/215 , G11B2220/235 , G11B2220/2537
摘要： When there is a defect area in a specific recording layer, recording of information is continued and reduction in a recording rate is restrained. In an optical recording method for recording information on a multilayer optical recording medium having a plurality of recording layers by irradiating the recording layer with a beam spot, any recording layer is set as an escape recording layer. When a defect area is detected while information is recorded on another recording layer except for the escape recording layer, the beam spot moves to the escape recording layer to continue recording the information.
摘要翻译： 当在特定记录层中存在缺陷区域时，继续记录信息并抑制记录速率的降低。 在通过用光斑照射记录层而在具有多个记录层的多层光学记录介质上记录信息的光学记录方法中，将任何记录层设置为逃逸记录层。 当在除了逃逸记录层之外的另一记录层上记录信息时检测到缺陷区域时，光束点移动到逃逸记录层以继续记录信息。
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公开(公告)号：US20100074084A1
公开(公告)日：2010-03-25
申请号：US12451526
申请日：2008-04-16
申请人： Koji Mishima , Tsutomu Aoyama , Takashi Kikukawa
发明人： Koji Mishima , Tsutomu Aoyama , Takashi Kikukawa
IPC分类号： G11B7/00
CPC分类号： G11B7/243 , G11B7/24038 , G11B7/259 , G11B2007/24312 , G11B2007/24314 , G11B2007/2432 , G11B2007/25706 , G11B2007/25708 , G11B2007/25713 , G11B2007/25715
摘要： An optical recording medium which includes three or more information layers and has a higher stack density of information layers than before in the direction of thickness while reducing crosstalk during reproduction, and a method for reading the optical recording medium are provided. The optical recording medium has a three-layer structure which includes a substrate, a first information layer, a first spacer layer, a second information layer, a second spacer layer, a third information layer, and a cover layer thinner than the substrate, with these layers being stacked in that order over the substrate, wherein the following Equation (I) is satisfied: (R2×R3×R2)/R1≦0.0032 Equation (I) where R1 is the reflectivity of the first information layer, R2 is the reflectivity of the second information layer, and R3 is the reflectivity of the third information layer, and the first spacer layer and the second spacer layer are equal to each other in thickness.
摘要翻译： 提供了一种光记录介质，其包括三个或更多个信息层，并且在减小再现期间的串扰的同时，在厚度方向上具有比以前更高的堆叠密度的信息层，以及读取光学记录介质的方法。 光记录介质具有三层结构，其包括基板，第一信息层，第一间隔层，第二信息层，第二间隔层，第三信息层和比基板更薄的覆盖层， 这些层在衬底上按顺序层叠，其中满足以下等式（I）：（R2×R3×R2）/R1≦̸0.0032等式（I）其中R1是第一信息层的反射率，R2是 第二信息层的反射率，R3是第三信息层的反射率，第一间隔层和第二间隔层的厚度相等。
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公开(公告)号：US08588045B2
公开(公告)日：2013-11-19
申请号：US12531739
申请日：2008-03-10
申请人： Takashi Kikukawa , Koji Mishima
发明人： Takashi Kikukawa , Koji Mishima
CPC分类号： G11B7/0045 , G11B7/24038 , G11B2007/0013
摘要： Information is recorded on a multi-layered optical recording medium by irradiating it with a laser beam. The recording medium can form a first information recording layer that is the farthest from a light incident surface, a second information recording layer that is the second farthest from the light incident surface, and at least one third information recording layer that is located closer to the light incident surface than the second information recording layer is. At this time, if all the information recording layers other than the first information recording layer are either blank or have been completely recorded, then information is recorded on the first information recording layer. This allows for stabilizing the energy of a recording laser beam during recording and thereby providing improved recording quality.
摘要翻译： 信息通过用激光束照射而记录在多层光学记录介质上。 记录介质可以形成距离光入射面最远的第一信息记录层，距离光入射表面最远的第二信息记录层，以及至少一个第三信息记录层，位于更靠近 光入射面比第二信息记录层为。 此时，如果除了第一信息记录层之外的所有信息记录层都是空白的或已经被完全记录，则信息被记录在第一信息记录层上。 这允许在记录期间稳定记录激光束的能量，从而提供改善的记录质量。
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8.发明授权公开(公告)号：US08081548B2
公开(公告)日：2011-12-20
申请号：US12864437
申请日：2009-01-27
IPC分类号： G11B20/18
CPC分类号： G11B7/268 , G01B11/06 , G11B7/00375 , G11B7/24038
摘要： A multilayer optical recording medium having three or more information recording layers is irradiated with a laser beam, and a first signal obtained from the reflected laser beam is subjected to a frequency filter. A second signal obtained by filtration through a high-pass filter is used to evaluate the characteristics of the multilayer optical recording medium. In this manner, even in a multilayer optical recording medium having three or more information recording layers, the influence of the variation of the thickness and material of the information recording layers and the influence of the variation of the thickness of a spacer layer can be clearly determined and evaluated.
摘要翻译： 用激光束照射具有三个以上信息记录层的多层光记录介质，对从反射激光束得到的第一信号进行频率滤波。 使用通过高通滤波器过滤获得的第二信号来评估多层光学记录介质的特性。 以这种方式，即使在具有三个或更多个信息记录层的多层光学记录介质中，信息记录层的厚度和材料的变化的影响以及间隔层的厚度的变化的影响也可以是清楚的 确定和评估。
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公开(公告)号：US07817526B2
公开(公告)日：2010-10-19
申请号：US11892088
申请日：2007-08-20
申请人： Koji Mishima , Takashi Kikukawa , Hidetake Itoh
发明人： Koji Mishima , Takashi Kikukawa , Hidetake Itoh
CPC分类号： G11B7/24038 , Y10T428/21
摘要： An optical recording medium has a five-layer structure including five recording layers, namely an L0 layer, an L1 layer, an L2 layer, an L3 layer, and an L4 layer in this order from a side farthest away from a laser light incident surface. The materials of the respective recording layers are selected so that the rate of change in transmittance Tb/Ta as taken from the laser light incident surface satisfies 0.93
摘要翻译： 光记录介质具有从距离激光入射面最远的一侧依次包括五个记录层的五层结构，即L0层，L1层，L2层，L3层和L4层 。 选择各个记录层的材料，使得当在记录层中记录在L0层上时，从激光入射表面获得的透射率Tb / Ta的变化率满足0.93
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公开(公告)号：US20080170484A1
公开(公告)日：2008-07-17
申请号：US12003916
申请日：2008-01-03
申请人： Koji Mishima , Takashi Kikukawa , Hidetake Itoh
发明人： Koji Mishima , Takashi Kikukawa , Hidetake Itoh
IPC分类号： G11B7/00
CPC分类号： G11B7/24079 , G11B7/24035 , G11B7/24067 , G11B7/259 , G11B2007/24304 , G11B2007/24306 , G11B2007/24314 , G11B2007/2432 , G11B2007/25706 , G11B2007/25708 , G11B2007/25715
摘要： A reliable optical recording medium is provided which includes an information layer exhibiting small changes in the optical properties even during long-term storage. The optical recording medium includes the information layer including a recording film having an extinction coefficient of 0.4 or less at the wavelength of a laser beam used for recording and reproducing. The information layer further includes a light absorbing film having an extinction coefficient of 1.5 or less at the wavelength of the laser beam, and the extinction coefficient of the light absorbing film is greater than that of the recording film.
摘要翻译： 提供了一种可靠的光学记录介质，其包括即使在长期存储期间也表现出光学特性的小变化的信息层。 光记录介质包括信息层，其包括在用于记录和再现的激光束的波长处具有0.4或更小的消光系数的记录膜。 信息层还包括在激光束的波长处具有1.5或更小的消光系数的光吸收膜，并且光吸收膜的消光系数大于记录膜的消光系数。
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