公开(公告)号：US08179760B2

公开(公告)日：2012-05-15

申请号：US12573200

申请日：2009-10-05

申请人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

发明人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B27/36 ,  G11B7/0045

CPC分类号： G11B7/0037 ,  G11B7/005 ,  G11B7/24038 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10296 ,  G11B20/1816 ,  G11B2007/0013

摘要： A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.

摘要翻译： 根据本发明的再现信号评估方法涉及在包括可记录在信息记录介质上的组合的数据序列中的最短标记和最短空间之间的边缘部分的调整。 在包括最短标记和在最短标记之前或之后相邻的最短空格的图案中，从针对与最短标记相邻的空格的第一图案之一计算的差分度量获得最短标记的边缘的偏移量 标记与不相邻的最短空间长于最短空间; 以及第二图案，其中与最短空间相邻并且不与最短标记相邻的标记比最短标记长。

公开(公告)号：US08243571B2

公开(公告)日：2012-08-14

申请号：US12745297

申请日：2009-09-29

申请人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

发明人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B27/36 ,  G11B7/0045

CPC分类号： G11B20/1403 ,  G11B7/0037 ,  G11B7/00458 ,  G11B7/005 ,  G11B7/24038 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10287 ,  G11B20/10296 ,  G11B20/10407 ,  G11B20/10481 ,  G11B20/1049 ,  G11B20/1816 ,  G11B2007/0013 ,  G11B2220/235 ,  G11B2220/2541

摘要： A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.

摘要翻译： 根据本发明的再现信号评估方法涉及在包括可记录在信息记录介质上的组合的数据序列中的最短标记和最短空间之间的边缘部分的调整。 在包括最短标记和在最短标记之前或之后相邻的最短空格的图案中，从针对与最短标记相邻的空格的第一图案之一计算的差分度量获得最短标记的边缘的偏移量 标记与不相邻的最短空间长于最短空间; 以及第二图案，其中与最短空间相邻并且不与最短标记相邻的标记比最短标记长。

公开(公告)号：US08203922B2

公开(公告)日：2012-06-19

申请号：US12745297

申请日：2009-09-29

申请人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

发明人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B27/36 ,  G11B7/0045

摘要： A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.

公开(公告)号：US20100302925A1

公开(公告)日：2010-12-02

申请号：US12745297

申请日：2009-09-29

申请人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

发明人： Kiyotaka Ito ,  Yasumori Hino ,  Harumitsu Miyashita ,  Isao Kobayashi

IPC分类号： G11B27/36

CPC分类号： G11B20/1403 ,  G11B7/0037 ,  G11B7/00458 ,  G11B7/005 ,  G11B7/24038 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10287 ,  G11B20/10296 ,  G11B20/10407 ,  G11B20/10481 ,  G11B20/1049 ,  G11B20/1816 ,  G11B2007/0013 ,  G11B2220/235 ,  G11B2220/2541

摘要： A reproduction signal evaluation method according to the present invention includes a step of generating a binary signal from an information recording medium on which a data sequence including marks and spaces in combination is recordable, using a PRML signal processing method from a signal obtained by reproducing the data sequence; and a differential calculation step of calculating a differential metric using a first state transition path having a maximum likelihood and a second state transition path having a second maximum likelihood, and a reproduction signal, the first state transition path and the second state transition path being obtained based on the binary signal. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.

摘要翻译： 根据本发明的再现信号评估方法包括从信息记录介质生成二进制信号的步骤，在该信息记录介质上，包括组合的记号和空格的数据序列可记录，使用PRML信号处理方法从通过再现 数据序列; 以及差分计算步骤，使用具有最大似然的第一状态转移路径和具有第二最大似然度的第二状态转移路径以及再现信号来计算差分度量，获得第一状态转换路径和第二状态转换路径 基于二进制信号。 在包括最短标记和在最短标记之前或之后相邻的最短空格的图案中，从针对与最短标记相邻的空格的第一图案之一计算的差分度量获得最短标记的边缘的偏移量 标记与不相邻的最短空间长于最短空间; 以及第二图案，其中与最短空间相邻并且不与最短标记相邻的标记比最短标记长。

公开(公告)号：US20120057448A1

公开(公告)日：2012-03-08

申请号：US13318722

申请日：2011-03-07

申请人： Kiyotaka Ito ,  Yasumori Hino ,  Naoyasu Miyagawa ,  Atsushi Nakamura

发明人： Kiyotaka Ito ,  Yasumori Hino ,  Naoyasu Miyagawa ,  Atsushi Nakamura

IPC分类号： G11B7/125 ,  G11B7/139

CPC分类号： G11B7/00456 ,  G11B7/0062

摘要： A writing method according to the present invention is a method for writing a data sequence as a combination of marks and spaces on an information recording medium by condensing a laser beam through a lens. The writing method is characterized in that a cooling pulse for recording a mark that is even shorter than the limit of optical resolution of the laser beam and another cooling pulse for recording a mark that is still longer than the limit of the optical resolution of the laser beam are applied under mutually different conditions.

摘要翻译： 根据本发明的写入方法是通过将激光束通过透镜聚焦来将数据序列作为标记和间隔的组合写入信息记录介质的方法。 写入方法的特征在于，用于记录比激光束的光学分辨率的极限更短的标记的冷却脉冲和用于记录比激光的光学分辨率的极限更长的标记的另一个冷却脉冲 光束在相互不同的条件下施加。

公开(公告)号：US08233362B2

公开(公告)日：2012-07-31

申请号：US12719912

申请日：2010-03-09

申请人： Kiyotaka Ito ,  Mamoru Shoji ,  Yasumori Hino ,  Atsushi Nakamura ,  Naoyasu Miyagawa ,  Motoshi Ito

发明人： Kiyotaka Ito ,  Mamoru Shoji ,  Yasumori Hino ,  Atsushi Nakamura ,  Naoyasu Miyagawa ,  Motoshi Ito

IPC分类号： G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/00456

摘要： The present invention provides a measure for getting read/write control information stored within a space of a predetermined size in a format that ensures compatibility with media of a lower order or an older generation even if the size of the read/write control information increases significantly as the storage densities of information storage media rise in the near future. On an information storage medium, a data sequence is writable as a combination of marks and spaces. The medium has at least one information storage layer, which has an information storage area to store information and a control information area for use to perform a read/write operation on the at least one information storage layer. The control information area stores at least one set of control information, which includes a first kind of write pulse information including information to be used as a reference value and a second kind of write pulse information including information to be used as an offset value. The size of the offset value is at least a half as large as that of the reference value.

摘要翻译： 本发明提供一种用于获得存储在预定大小的空间内的读/写控制信息的措施，即使读/写控制信息的大小显着增加，也可以确保与较低级别或较老版本的媒体兼容的格式 随着信息存储媒体的存储密度在不久的将来上升。 在信息存储介质上，作为标记和空格的组合可写入数据序列。 介质具有至少一个信息存储层，其具有用于存储信息的信息存储区域和用于对至少一个信息存储层执行读/写操作的控制信息区域。 控制信息区域存储至少一组控制信息，该组控制信息包括包括要用作参考值的信息的第一种写入脉冲信息和包括要用作偏移值的信息的第二种写入脉冲信息。 偏移值的大小至少是参考值的一半。

公开(公告)号：US09042002B2

公开(公告)日：2015-05-26

申请号：US13817952

申请日：2012-08-16

申请人： Kiyotaka Ito ,  Yasumori Hino

发明人： Kiyotaka Ito ,  Yasumori Hino

IPC分类号： G02F2/00 ,  G11B7/1395 ,  G11B7/1365 ,  G11B20/10

CPC分类号： G02F2/00 ,  G11B7/1365 ,  G11B7/1395 ,  G11B20/10268 ,  H04B10/6165 ,  H04L27/223 ,  H04L27/2271

摘要： A phase difference error detecting unit detects a phase difference error component included in a phase difference component; a phase difference correcting unit corrects a first signal having the phase difference component as an angle of a cosine function and a second signal whose angle of the cosine function differs from that of the first signal by approximately π/2 based on the detected phase difference error component; a phase operating unit operates a phase difference component from the first signal and the second signal corrected by the phase difference correcting unit; and the phase difference correcting unit obtains the corrected first signal and the corrected second signal by rotating a coordinate point represented by the first signal and the second signal on a polar coordinate plane by an angle corresponding to the phase difference error component.

摘要翻译： 相位差误差检测单元检测包括在相位差分量中的相位差误差分量; 相位差校正单元基于检测到的相位差校正具有相位差分量的第一信号作为余弦函数的角度和第二信号，其余弦函数的角度与第一信号的角度不同于大约＆pgr / 误差分量 相位操作单元对来自第一信号的相位差分量和由相位差校正单元校正的第二信号进行操作; 并且相位差校正单元通过将由第一信号和第二信号表示的坐标点在极坐标平面上旋转与相位差误差分量相对应的角度来获得校正的第一信号和校正的第二信号。

公开(公告)号：US08488433B2

公开(公告)日：2013-07-16

申请号：US13813316

申请日：2012-06-11

申请人： Kiyotaka Ito ,  Yasumori Hino

发明人： Kiyotaka Ito ,  Yasumori Hino

IPC分类号： G11B7/00

CPC分类号： G11B20/24 ,  G01B9/02002 ,  G01B9/02067 ,  G01B9/02081 ,  G01B2290/70 ,  G01D5/34715 ,  G11B7/0051 ,  G11B7/1263 ,  G11B7/1356 ,  G11B7/1362

摘要： When ld0 denotes an initial optical path length that is a length of an optical path, along which the signal light travels, as converted using a refractive index in vacuum, lm0 denotes an initial optical path length that is a length of an optical path, along which the reference light travels, as converted using a refractive index in vacuum, Δl denotes a fluctuation width of a difference in optical path lengths between the signal light and the reference light as converted using a refractive index in vacuum, λ0 denotes a central oscillation wavelength of the wavelength-variable laser, and Δλ denotes an oscillation wavelength variable range of the wavelength-variable laser, then an initial optical path difference |ld0−lm0| satisfies |ld0−lm0|>(Δl/Δλ)λ0.

摘要翻译： 当ld0表示作为信号光行进的光路的长度的初始光程长度，使用真空中的折射率转换时，lm0表示沿着光路的长度的初始光程长度 参考光行进时，使用真空中的折射率转换，Deltal表示使用真空中折射率转换的信号光和参考光之间的光程长度差的波动宽度，λ0表示中心振荡波长 的波长可变激光器，Deltalambda表示波长可变激光器的振荡波长可变范围，则初始光程差| ld0-lm0 | 满足| ld0-lm0 |>（Deltal / Deltalambda）lambda0。

公开(公告)号：US20130128709A1

公开(公告)日：2013-05-23

申请号：US13813316

申请日：2012-06-11

申请人： Kiyotaka Ito ,  Yasumori Hino

发明人： Kiyotaka Ito ,  Yasumori Hino

IPC分类号： G11B20/24

CPC分类号： G11B20/24 ,  G01B9/02002 ,  G01B9/02067 ,  G01B9/02081 ,  G01B2290/70 ,  G01D5/34715 ,  G11B7/0051 ,  G11B7/1263 ,  G11B7/1356 ,  G11B7/1362

摘要： When ld0 denotes an initial optical path length that is a length of an optical path, along which the signal light travels, as converted using a refractive index in vacuum, lm0 denotes an initial optical path length that is a length of an optical path, along which the reference light travels, as converted using a refractive index in vacuum, Δl denotes a fluctuation width of a difference in optical path lengths between the signal light and the reference light as converted using a refractive index in vacuum, λ0 denotes a central oscillation wavelength of the wavelength-variable laser, and Δλ denotes an oscillation wavelength variable range of the wavelength-variable laser, then an initial optical path difference |ld0−lm0| satisfies |ld0−lm0|>(Δl/Δλ)λ0.

摘要翻译： 当ld0表示作为信号光行进的光路的长度的初始光程长度，使用真空中的折射率转换时，lm0表示沿着光路的长度的初始光程长度 参考光行进时，使用真空中的折射率转换，Deltal表示使用真空中的折射率转换的信号光和参考光之间的光程长度差的波动宽度，λ0表示中心振荡波长 的波长可变激光器，Deltalambda表示波长可变激光器的振荡波长可变范围，则初始光程差| ld0-lm0 | 满足| ld0-lm0 |>（Deltal / Deltalambda）lambda0。

公开(公告)号：US20110107134A1

公开(公告)日：2011-05-05

申请号：US13000178

申请日：2010-03-05

申请人： Kiyotaka Ito ,  Mamoru Shoji ,  Yasumori Hino ,  Atsushi Nakamura ,  Naoyasu Miyagawa ,  Motoshi Ito

发明人： Kiyotaka Ito ,  Mamoru Shoji ,  Yasumori Hino ,  Atsushi Nakamura ,  Naoyasu Miyagawa ,  Motoshi Ito

IPC分类号： G06F1/04

CPC分类号： G11B7/00736 ,  G11B7/00456 ,  G11B7/0062

摘要： The present invention provides a measure for getting read/write control information stored within a space of a predetermined size in a format that ensures compatibility with media of a lower order or an older generation even if the size of the read/write control information increases significantly as the storage densities of information storage media rise in the near future. On an information storage medium, a data sequence is writable as a combination of marks and spaces. The medium has at least one information storage layer, which has an information storage area to store information and a control information area for use to perform a read/write operation on the at least one information storage layer. The control information area stores at least one set of control information, which includes a first kind of write pulse information including information to be used as a reference value and a second kind of write pulse information including information to be used as an offset value. If the pulse width or pulse position of a write pulse is definable with a precision of 1T/n (where T is a channel clock pulse width and n is a positive integer), the size of the offset value is large enough to define at least an n/2 range.

摘要翻译： 本发明提供一种用于获得存储在预定大小的空间内的读/写控制信息的措施，即使读/写控制信息的大小显着增加，也可以确保与较低级别或较老版本的媒体兼容的格式 随着信息存储媒体的存储密度在不久的将来上升。 在信息存储介质上，作为标记和空格的组合可写入数据序列。 介质具有至少一个信息存储层，其具有用于存储信息的信息存储区域和用于对至少一个信息存储层执行读/写操作的控制信息区域。 控制信息区域存储至少一组控制信息，该组控制信息包括包括要用作参考值的信息的第一种写入脉冲信息和包括要用作偏移值的信息的第二种写入脉冲信息。 如果写入脉冲的脉冲宽度或脉冲位置以1T / n的精度定义（其中T是通道时钟脉冲宽度，n是正整数），则偏移值的大小足够大以至少定义 一个n / 2范围。