公开(公告)号：US08691357B2

公开(公告)日：2014-04-08

申请号：US13497866

申请日：2010-09-27

申请人： Naoki Taya ,  Takehito Nakayama ,  Hideharu Tajima ,  Yasuhiro Harada ,  Masaki Yamamoto ,  Hirohisa Yamada

发明人： Naoki Taya ,  Takehito Nakayama ,  Hideharu Tajima ,  Yasuhiro Harada ,  Masaki Yamamoto ,  Hirohisa Yamada

IPC分类号： G11B7/24

CPC分类号： G11B7/256 ,  G11B7/24024 ,  G11B7/24056 ,  G11B7/24065

摘要： A pressure-sensitive adhesive sheet 1 for an optical data recording medium D1 from which a signal with a mark length shorter than the resolution limit of an optical system of a reproducing device is capable of being reproduced by reproduction light emitted during reproducing, the pressure-sensitive adhesive sheet 1 having an adhesive transparent resin layer 11 to be disposed on an data recording layer 3 of the optical data recording medium D1, the transparent resin layer 11 having a (meth)acrylate copolymer containing no acidic group as a main component, the transparent resin layer 11 having a storage elastic modulus at 23° C. of 1.5×105 Pa or less and a gel fraction of 68 wt % or more. The transparent resin layer 11 of this pressure-sensitive adhesive sheet 1 for an optical data recording medium can be used for producing an optical data recording medium which can reproduce from a mark with a length shorter than the resolution of an optical system of a reproducing device, and which is stable against changes in the external environment when responding to status of use.

摘要翻译： 用于光学数据记录介质D1的压敏粘合片1，其标记长度短于再现装置的光学系统的分辨率极限的信号能够通过再现期间发出的再现光再现， 具有要设置在光学数据记录介质D1的数据记录层3上的粘合剂透明树脂层11的粘合片1，具有不含酸性基团的（甲基）丙烯酸酯共聚物作为主要成分的透明树脂层11， 在23℃下的储能弹性模量为1.5×10 5 Pa以下，凝胶率为68重量％以上的透明树脂层11。 用于光学数据记录介质的该粘合片1的透明树脂层11可以用于制造光学数据记录介质，该光学数据记录介质可以从长度短于再现装置的光学系统的分辨率的标记再现 对应用状况的外部环境变化是稳定的。

公开(公告)号：US20120246666A1

公开(公告)日：2012-09-27

申请号：US13497866

申请日：2010-09-27

申请人： Naoki Taya ,  Takehito Nakayama ,  Hideharu Tajima ,  Yasuhiro Harada ,  Masaki Yamamoto ,  Hirohisa Yamada

发明人： Naoki Taya ,  Takehito Nakayama ,  Hideharu Tajima ,  Yasuhiro Harada ,  Masaki Yamamoto ,  Hirohisa Yamada

IPC分类号： G11B7/241 ,  G11B19/20 ,  B32B3/02 ,  C09J133/26 ,  B32B7/12 ,  C08F220/56 ,  G11B7/00 ,  C09J7/02

CPC分类号： G11B7/256 ,  G11B7/24024 ,  G11B7/24056 ,  G11B7/24065

摘要： A pressure-sensitive adhesive sheet 1 for an optical data recording medium D1 from which a signal with a mark length shorter than the resolution limit of an optical system of a reproducing device is capable of being reproduced by reproduction light emitted during reproducing, the pressure-sensitive adhesive sheet 1 having an adhesive transparent resin layer 11 to be disposed on an data recording layer 3 of the optical data recording medium D1, the transparent resin layer 11 having a (meth)acrylate copolymer containing no acidic group as a main component, the transparent resin layer 11 having a storage elastic modulus at 23° C. of 1.5×105 Pa or less and a gel fraction of 68 wt % or more. The transparent resin layer 11 of this pressure-sensitive adhesive sheet 1 for an optical data recording medium can be used for producing an optical data recording medium which can reproduce from a mark with a length shorter than the resolution of an optical system of a reproducing device, and which is stable against changes in the external environment when responding to status of use.

摘要翻译： 用于光学数据记录介质D1的压敏粘合片1，其标记长度短于再现装置的光学系统的分辨率极限的信号能够通过再现期间发出的再现光再现， 具有要设置在光学数据记录介质D1的数据记录层3上的粘合剂透明树脂层11的粘合片1，具有不含酸性基团的（甲基）丙烯酸酯共聚物作为主要成分的透明树脂层11， 在23℃下的储能弹性模量为1.5×10 5 Pa以下，凝胶率为68重量％以上的透明树脂层11。 用于光学数据记录介质的该粘合片1的透明树脂层11可以用于制造光学数据记录介质，该光学数据记录介质可以从长度短于再现装置的光学系统的分辨率的标记再现 对应用状况的外部环境变化是稳定的。

公开(公告)号：US08514674B2

公开(公告)日：2013-08-20

申请号：US12588181

申请日：2009-10-07

申请人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

发明人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

IPC分类号： G11B11/00 ,  G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/005

摘要： An optical information recording medium reproducing apparatus 1 includes: a signal detecting/extracting section 15 extracting, from reproduction signal data, extracted reproduction signal data corresponding to a predetermined data pattern; a calculating circuit 10 calculating, from the extracted reproduction signal data, a reproducing power control value for controlling laser light reproducing power; and a reproducing power control section 16 controlling the reproducing power based on the reproducing power control value. The predetermined data pattern is obtained from a space which is sandwiched between marks of λ/2NA or longer and is shorter than λ/4NA and/or a mark which is sandwiched between spaces of λ/2NA or longer and is shorter than λ/4NA. Therefore, even when environmental temperature changes in reproduction, the optical information recording medium reproducing apparatus capable of reproducing a super resolution medium including marks each shorter than λ/4NA optimally controls laser light reproducing power and prevents degradation of reproduction signal quality.

摘要翻译： 光信息记录介质再现装置1包括：信号检测/提取部分15，从再现信号数据提取对应于预定数据图形的提取的再现信号数据; 计算电路10根据所提取的再现信号数据计算用于控制激光再现功率的再现功率控制值; 以及再现功率控制部分16，其基于再现功率控制值来控制再现功率。 预定数据图案是从λ/ 2NA或更长的标记之间并且短于λ/ 4NA的空间和/或夹在λ/ 2NA或更长且短于λ/ 4NA的空间之间的标记获得的 。 因此，即使再生环境温度变化，能够再现包含比λ/ 4NA短的标记的超分辨率介质的光信息记录介质再现装置也能够最佳地控制激光再现功率，防止再现信号质量的劣化。

公开(公告)号：US20130142029A1

公开(公告)日：2013-06-06

申请号：US13702613

申请日：2011-06-10

申请人： Hideharu Tajima ,  Go Mori ,  Yasuhiro Harada ,  Masaki Yamamoto ,  Hirohisa Yamada ,  Masahito Konishi

发明人： Hideharu Tajima ,  Go Mori ,  Yasuhiro Harada ,  Masaki Yamamoto ,  Hirohisa Yamada ,  Masahito Konishi

IPC分类号： G11B7/24038

CPC分类号： G11B7/005 ,  G11B7/00745 ,  G11B7/013 ,  G11B7/24038 ,  G11B7/24085 ,  G11B7/24088 ,  G11B7/261 ,  G11B20/1012 ,  G11B2007/0013 ,  G11B2007/0133

摘要： An optical information recording medium has a first information recording layer (20) and a second information recording layer (40) each of which includes (i) a group of pre-pits (31, 51) constituting marks (32, 52) and spaces (33, 53) and (ii) a super-resolution film (23, 43), the marks (32, 52) and the spaces (33, 53) having different lengths, an average length of a smallest mark that is smallest in length and a smallest space that is smallest in length being less than or equal to a resolution limit of a reproduction optical system for reproducing information recorded on the first information recording layer (20) and the second information recording layer (40), the group of pre-pits (31, 51) being formed so that a push-pull signal for the reproduction optical system to reproduce the information recorded by the group of pre-pits is negative in polarity. This provides an inexpensive and high-capacity multilayer optical information recording medium based on a super-resolution technology.

公开(公告)号：US08379505B2

公开(公告)日：2013-02-19

申请号：US13425060

申请日：2012-03-20

申请人： Toshihiko Sakai ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima ,  Nobuyuki Takamori

发明人： Toshihiko Sakai ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima ,  Nobuyuki Takamori

IPC分类号： G11B7/24

CPC分类号： G11B7/007 ,  G11B7/0053 ,  G11B7/00745 ,  G11B7/24 ,  G11B7/24091

摘要： A super-resolution optical recording medium includes: a medium information region on which medium identification information is recorded; a content region on which content information is recorded; and a blank region provided between the medium information region and the content region and in which at least two tracks are provided so as to connect a train of prepits in the medium information region and a train of prepits in the content region. No information is recorded on the blank region. Thus, a super-resolution optical recording medium is provided in which a region on which medium identification information is recorded and a region on which content information is recorded are different in track pitch and in which a reproduction error hardly occurs when reproduction shifts from the region on which the medium identification information is recorded to the region on which the content information is recorded.

摘要翻译： 超分辨率光记录介质包括：记录有介质识别信息的介质信息区域; 记录内容信息的内容区域; 以及设置在所述介质信息区域和所述内容区域之间的空白区域，并且其中设置有至少两个轨道，以便连接所述介质信息区域中的一列预凹坑和所述内容区域中的一列预凹坑。 没有信息记录在空白区域。 因此，提供了一种超分辨率光学记录介质，其中记录有介质识别信息的区域和记录有内容信息的区域在磁道间距上不同，并且当再现从该区域移位时几乎不发生再现错误 将介质识别信息记录在其上记录有内容信息的区域。

公开(公告)号：US20120002514A1

公开(公告)日：2012-01-05

申请号：US13138519

申请日：2010-02-22

申请人： Atsushi Etoh ,  Tetsuya Okumura ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshihisa Adachi ,  Tetsuya Hayashi ,  Yasuhiro Harada ,  Takashi Arimoto ,  Ikuo Nakarno ,  Masaki Yamamoto ,  Hirohisa Yamada

发明人： Atsushi Etoh ,  Tetsuya Okumura ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshihisa Adachi ,  Tetsuya Hayashi ,  Yasuhiro Harada ,  Takashi Arimoto ,  Ikuo Nakarno ,  Masaki Yamamoto ,  Hirohisa Yamada

IPC分类号： G11B21/08

CPC分类号： G11B7/00736 ,  G11B7/08511 ,  G11B7/24038 ,  G11B19/127 ,  G11B2007/0013 ,  G11B2220/235

摘要： An invention disclosed includes a layer number obtaining section (222) for determining which information storage layer (L1) has been accessed and a layer type identifying section (223) for identifying a type of the information storage layer (L1) determined by the layer number obtaining section (222). With the configuration, even in a case where an information recording and reproducing apparatus accesses an information storage layer different from an intended information storage layer by false operation or the like, it is still possible to dissolve mismatching between a recording or reproduction control scheme being set up and a recording or reproduction control scheme suitable for the information storage layer thus accessed.

摘要翻译： 所公开的发明包括用于确定已经访问了哪个信息存储层（L1）的层号获取部分（222）和用于识别由层号确定的信息存储层（L1）的类型的层类型识别部分（223） 获取部分（222）。 利用这种配置，即使在信息记录和再现装置通过错误操作等访问与预期信息存储层不同的信息存储层的情况下，仍然可以解决设置的记录或再现控制方案之间的不匹配 以及适合于如此访问的信息存储层的记录或再现控制方案。

公开(公告)号：US20100278026A1

公开(公告)日：2010-11-04

申请号：US12734190

申请日：2008-10-17

申请人： Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima

发明人： Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima

IPC分类号： G11B20/18

CPC分类号： G11B7/005 ,  G11B7/1267 ,  G11B7/2533

摘要： An optical information recording medium reproducing device (1) reproduces information from a super-resolution optical information recording medium (100a) having the information stored therein by positioning, according to a random pattern system, a plurality of recording marks including a recording mark shorter than a resolution limit of an optical system. This reproducing device (1) performs test readings for measuring indexes each relating to a reproduction quality of the super-resolution optical information recording medium (100a) by emitting laser light onto a storage surface of the super-resolution optical information recording medium (100a), while changing a reproduction laser power from a predetermined initial value, and based on the indexes measured, sets a reproduction laser power for reproducing the information. Thus, since the reproduction laser power for reproducing the information stored in the super-resolution optical information recording medium (100a) is determined based on the test readings results, a favorable reproduction quality can be obtained.

摘要翻译： 光信息记录介质再现装置（1）通过根据随机图案系统定位多个记录标记，该记录标记包括比记录标记短的记录标记，从具有存储在其中的信息的超分辨率光学信息记录介质（100a）再现信息 光学系统的分辨率限制。 该再现装置（1）通过将激光发射到超分辨率光学信息记录介质（100a）的存储表面上来执行用于测量与超分辨率光学信息记录介质（100a）的再现质量有关的指标的测试读数， 在从预定的初始值改变再现激光功率的同时，并且基于测量的指标，设置用于再现信息的再现激光功率。 因此，由于基于测试读数结果确定用于再现存储在超分辨率光学信息记录介质（100a）中的信息的再现激光功率，因此可以获得良好的再现质量。

公开(公告)号：US20100254243A1

公开(公告)日：2010-10-07

申请号：US12801485

申请日：2010-06-11

申请人： Go Mori ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

发明人： Go Mori ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Yasuhiro Harada ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

IPC分类号： G11B7/00

CPC分类号： G11B20/18 ,  G11B7/00736 ,  G11B7/24065 ,  G11B7/252 ,  G11B7/258 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/1012 ,  G11B20/10481 ,  G11B20/1217 ,  G11B20/1426 ,  G11B2220/2541 ,  G11B2220/2579

摘要： This invention allows super-resolution reproduction with which a better bER value is attainable, when information is recorded by a random pattern including a mark length not longer than a resolution limit, by use of a highly versatile signal decoding method.Information is recorded as marks and spaces coded by RLL(1,7) modulation, which each of the marks and spaces have one of a plurality of lengths, and 2T marks and 2T spaces of the marks and spaces being formed are shorter than 0.12 μm. An information recording layer (20) includes a reproduction film (21) and a reflective film (22) which are provided in this order from a side from which reproducing light is incident, which reproduction film is made of (i) zinc oxide, (ii) strontium titanate, (iii) titanium oxide, (iv) cerium oxide, or (v) a material including at least one of the (i) through (iv), and which reflective film is made of tantalum or titanium.

公开(公告)号：US20100232269A1

公开(公告)日：2010-09-16

申请号：US12734169

申请日：2008-09-25

申请人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

发明人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Go Mori ,  Hideharu Tajima ,  Shigemi Maeda ,  Yoshiteru Murakami

IPC分类号： G11B20/10

CPC分类号： G11B7/00 ,  G11B7/0037 ,  G11B7/005 ,  G11B7/08511 ,  G11B7/12 ,  G11B7/126 ,  G11B7/1263 ,  G11B7/24 ,  G11B7/24038 ,  G11B19/125 ,  G11B19/128 ,  G11B2007/0013

摘要： In an optical information storage medium reproduction apparatus (10) for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus (10) requires. With the arrangement, it is possible to prevent that the information recording layer closest to the reproduction-laser-incident surface is irradiated wrongly with reproduction laser having high reproduction laser power, thereby making it possible to obtain successful reproduction quality. That is, it is possible to realize the optical information storage medium reproduction apparatus (10) that can set optimum reproduction laser power and perform stable super resolution reproduction.

公开(公告)号：US20100091638A1

公开(公告)日：2010-04-15

申请号：US12588181

申请日：2009-10-07

申请人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

发明人： Masaki Yamamoto ,  Hirohisa Yamada ,  Yasuhiro Harada ,  Hideharu Tajima ,  Jun Akiyama

IPC分类号： G11B7/125

CPC分类号： G11B7/1263 ,  G11B7/005

摘要： An optical information recording medium reproducing apparatus 1 includes: a signal detecting/extracting section 15 extracting, from reproduction signal data, extracted reproduction signal data corresponding to a predetermined data pattern; a calculating circuit 10 calculating, from the extracted reproduction signal data, a reproducing power control value for controlling laser light reproducing power; and a reproducing power control section 16 controlling the reproducing power based on the reproducing power control value. The predetermined data pattern is obtained from a space which is sandwiched between marks of λ/2NA or longer and is shorter than λ/4NA and/or a mark which is sandwiched between spaces of λ/2NA or longer and is shorter than λ/4NA. Therefore, even when environmental temperature changes in reproduction, the optical information recording medium reproducing apparatus capable of reproducing a super resolution medium including marks each shorter than λ/4NA optimally controls laser light reproducing power and prevents degradation of reproduction signal quality.

摘要翻译： 光信息记录介质再现装置1包括：信号检测/提取部分15，从再现信号数据提取对应于预定数据图形的提取的再现信号数据; 计算电路10根据所提取的再现信号数据计算用于控制激光再现功率的再现功率控制值; 以及再现功率控制部分16，其基于再现功率控制值来控制再现功率。 从λ/ 2NA以上且短于λ/ 4NA的标记和/或夹在λ/ 2NA以上且短于λ/ 4NA的间隔的标记的空间获得预定数据图案 。 因此，即使在再现环境温度变化的情况下，能够再现包含比λ/ 4NA短的标记的超分辨率介质的光信息记录介质再现装置也能够最佳地控制激光再生功率，防止再现信号品质的劣化。