公开(公告)号：US20060158983A1

公开(公告)日：2006-07-20

申请号：US11330188

申请日：2006-01-12

申请人： Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi ,  Toshiki Aoi

发明人： Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi ,  Toshiki Aoi

IPC分类号： G11B5/09 ,  G11B7/12

CPC分类号： G11B7/1362 ,  G11B7/005 ,  G11B7/1263 ,  G11B7/127 ,  G11B7/1395

摘要： A super resolution optical reproducing system, which can recognize a recording mark less than a resolution limit, removes the effect of a high-frequency noise component of a high power signal obtained by irradiating a laser beam with high read power. The same recording region of an optical recording medium is irradiated according to an irradiation spot by a laser beam with an ordinary read power and an irradiation spot by a laser beam with high read power to obtain a ordinary power signal and a high power signal. The ordinary power signal and the high power signal are normalized to an average level by high pass filters and low pass filters of a high power signal processing circuit and a ordinary power signal processing circuit. Then, a subtracter subtracts the ordinary power signal from the high power signal to obtain a substrated signal. The differential signal and a ordinary reproduced signal that has passed through a parallel processing circuit are amplitude-modulated by a pre-equalizer and a parallel pre-equalizer and then added up by an adder to form a composite signal. The composite signal is output as a reproduced signal.

摘要翻译： 可以识别小于分辨率极限的记录标记的超分辨率光学再现系统消除了通过以高读取功率照射激光而获得的高功率信号的高频噪声分量的影响。 通过具有普通读取功率的激光束和具有高读取功率的激光束的照射点，根据照射点照射光学记录介质的相同记录区域，以获得普通电力信号和高功率信号。 普通功率信号和高功率信号通过高功率信号处理电路和普通功率信号处理电路的高通滤波器和低通滤波器归一化为平均电平。 然后，减法器从高功率信号中减去普通功率信号，以获得一个子信号。 已经通过并行处理电路的差分信号和普通的再现信号由预均衡器和并行预均衡器进行幅度调制，然后由加法器相加以形成复合信号。 复合信号作为再现信号输出。

公开(公告)号：US20060153051A1

公开(公告)日：2006-07-13

申请号：US10562901

申请日：2004-06-29

申请人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

发明人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

IPC分类号： G11B7/24

CPC分类号： G11B7/00454 ,  G11B7/00452 ,  G11B7/24038 ,  G11B7/24065 ,  G11B7/243 ,  G11B2007/24304 ,  G11B2007/2432 ,  G11B2007/25706 ,  G11B2007/25715

摘要： An optical recording medium 10 having a substrate 11, an optically transparent layer 12, and a first dielectric layer 31, a noble metal oxide layer 23, a second dielectric layer 32, a light absorbing layer 22, a third dielectric layer 33 and a reflecting layer 21 which are disposed between the optically transparent layer 12 and the substrate 11, records and reproduces data into and from the optical recording medium 10 by irradiating the optical recording medium 10 with a laser beam 40 from the optically transparent layer 12 side. λ/NA is set to be not longer than 640 nm when λ designates a wavelength of the laser beam 40 and NA designates a numerical aperture of an objective lens, and setting is done as Pw×0.1≦Pr≦Pw×0.5 when Pw and Pr designate recording power and reproducing power of the laser beam 40 respectively, while a recording mark train including recording marks each having a length not larger than λ/4 NA is recorded and data are reproduced from the recording mark train.

摘要翻译： 具有基板11，光学透明层12和第一介电层31，贵金属氧化物层23，第二电介质层32，光吸收层22，第三电介质层33和反射的光记录介质10 设置在光学透明层12和基板11之间的层21通过用光学透明层12侧的激光束40照射光学记录介质10来记录数据并从光学记录介质10再现数据。 当λ表示激光束40的波长，NA表示物镜的数值孔径时，λ/ NA设定为不大于640nm，并且设定为Pwx0.1 <= Pr <= Pwx0.5，当 Pw和Pr分别指示激光束40的记录功率和再现功率，同时记录包括具有不大于λ/ 4NA的长度的记录标记的记录标记列，并且从记录标记列再现数据。

公开(公告)号：US20060126482A1

公开(公告)日：2006-06-15

申请号：US10561096

申请日：2004-06-30

申请人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

发明人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

IPC分类号： G11B7/24

CPC分类号： G11B7/00452 ,  G11B7/24 ,  G11B7/252 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24314 ,  G11B2007/24316

摘要： It is an object of the present invention to provide an optical recording disc which can record data constituted by a recording mark train including recording marks and blank regions neighboring recording marks therein and reproduce the data therefrom even in the case where the lengths of a recording mark and a blank region between neighboring recording marks are shorter than the resolution limit, thereby markedly increasing the storage capacity thereof and can improve the C/N ratio of the reproduced signal. An optical recording disc includes a substrate 2, a third dielectric layer 3, a light absorption layer 4, a second dielectric layer 5, a decomposition reaction layer 6 containing platinum oxide as a primary component, a first dielectric layer 7 and a light transmission layer 8 and wherein the second dielectric layer has a thickness of 20 nm to 100 nm and the optical recoding disc is constituted so that when it is irradiated with a laser beam 20 from the side of the light transmission layer 8, the platinum oxide contained in the decomposition reaction layer 6 as a primary component is decomposed into platinum and oxygen so that a bubble pit is formed in the decomposition reaction layer 6 by thus generated oxygen gas and fine particles of the noble metal precipitate into the bubble pit, thereby forming a recording mark in the decomposition reaction layer 6.

摘要翻译： 本发明的目的是提供一种光学记录盘，其可以记录由包括记录标记和包括记录标记在内的空白区域的记录标记列构成的数据，并且即使在记录标记的长度的情况下再现数据 并且相邻记录标记之间的空白区域比分辨率极限短，从而显着增加其存储容量，并且可以提高再现信号的C / N比。 光记录盘包括基板2，第三电介质层3，光吸收层4，第二电介质层5，含有氧化铂作为主要成分的分解反应层6，第一电介质层7和光透射层 8，其中所述第二电介质层的厚度为20nm至100nm，并且所述光学记录盘被构造成使得当从所述光透射层8的一侧照射激光束20时， 作为主要成分的分解反应层6分解为铂和氧，从而通过这样产生的氧气在分解反应层6中形成气泡，并且贵金属的细颗粒沉淀到气泡坑中，从而形成记录标记 在分解反应层6中。

公开(公告)号：US20050105418A1

公开(公告)日：2005-05-19

申请号：US10929894

申请日：2004-08-30

申请人： Masashi Kuwahara ,  Takayuki Shima ,  Junji Tominaga ,  Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

发明人： Masashi Kuwahara ,  Takayuki Shima ,  Junji Tominaga ,  Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

IPC分类号： G11B7/243 ,  G03G5/05 ,  G11B5/09 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/125 ,  G11B7/24

CPC分类号： G11B7/24 ,  G03G5/0564 ,  G11B7/00456 ,  G11B7/1267

摘要： A method for determining a read power of a laser beam according to the present invention includes a step of setting a power of a laser beam to a recommended recording power Pw′ and forming a recording mark train including at least one of a recording mark having a length shorter than a resolution limit and a blank region having a length shorter than the resolution limit in an optical recording disc, thereby recording test data therein, a step of setting the power of the laser beam to a recommended read power Pr′ and reproducing the test data recorded in the optical recording disc, a step of judging whether or not signal characteristics of a reproduced signal obtained by reproducing the test data satisfies reference conditions, and determining an optimum read power of the laser beam based on the result of the judgment. According to the thus constituted method for determining a read power of a laser beam, even in the case where the length of a recording mark or the length of a blank region between neighboring recording marks is shorter than the resolution limit, it is possible to record and reproduce a recording mark train including these recording marks and blank regions. Therefore, this method can be applied to an optical recording medium whose storage capacity is markedly increased.

摘要翻译： 根据本发明的用于确定激光束的读取功率的方法包括将激光束的功率设置为推荐的记录功率Pw'并形成记录标记列的步骤，该记录标记列包括具有 长度短于分辨率极限，并且具有长度短于光学记录盘中的分辨率极限的空白区域，从而在其中记录测试数据，将激光束的功率设置为推荐读取功率Pr'并再现 记录在光学记录盘中的测试数据，判断通过再现测试数据获得的再现信号的信号特性是否满足参考条件，并且基于判断结果确定激光束的最佳读取功率的步骤。 根据如此构成的确定激光束的读取功率的方法，即使在记录标记的长度或相邻记录标记之间的空白区域的长度短于分辨率限制的情况下，也可以记录 并且再现包括这些记录标记和空白区域的记录标记列。 因此，该方法可以应用于存储容量明显增加的光记录介质。

公开(公告)号：US08018804B2

公开(公告)日：2011-09-13

申请号：US11641069

申请日：2006-12-19

申请人： Jae-cheol Bae ,  Joo-ho Kim ,  In-oh Hwang ,  Hyun-soo Park ,  Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi

发明人： Jae-cheol Bae ,  Joo-ho Kim ,  In-oh Hwang ,  Hyun-soo Park ,  Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G11B7/1267

摘要： A method of determining an optimum reproduction condition of a first mark recorded on an optical recording medium that is smaller than a resolution of a pickup to reproduce the first mark. The method includes obtaining an optimum reproduction condition of a second mark having a length which closely approximates the resolution of the pickup, and determining the optimum reproduction condition of the first mark using the obtained optimum reproduction condition of the second mark.

摘要翻译： 一种确定记录在光学记录介质上的第一标记的最佳再现条件的方法，其小于拾取器的分辨率以再现第一标记。 该方法包括获得具有近似于拾取器的分辨率的长度的第二标记的最佳再现条件，以及使用获得的第二标记的最佳再现条件来确定第一标记的最佳再现条件。

公开(公告)号：US07791999B2

公开(公告)日：2010-09-07

申请号：US11641065

申请日：2006-12-19

申请人： Jae-cheol Bae ,  In-oh Hwang ,  Kyung-geun Lee ,  Hui Zhao ,  Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi

发明人： Jae-cheol Bae ,  In-oh Hwang ,  Kyung-geun Lee ,  Hui Zhao ,  Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/0062 ,  G11B7/00736 ,  G11B7/1267 ,  G11B20/10055

摘要： A method of optimizing a writing condition of an optical recording medium, including writing test pattern data with the writing condition on the optical recording medium, comparing an error pattern binary signal detected by reproducing the written test pattern data with a correct pattern binary signal of the test pattern data, and determining an optimum writing condition of the optical recording medium based on a result of the comparison.

摘要翻译： 一种优化光学记录介质的写入状态的方法，包括在光学记录介质上写入具有写入条件的测试图案数据，将通过再现所写入的测试图案数据检测的误差模式二进制信号与正确的模式二进制信号进行比较 测试图案数据，以及基于比较的结果确定光学记录介质的最佳写入条件。

公开(公告)号：US07646687B2

公开(公告)日：2010-01-12

申请号：US11783218

申请日：2007-04-06

申请人： Tatsuhiro Kobayashi ,  Takashi Kikukawa ,  Narutoshi Fukuzawa

发明人： Tatsuhiro Kobayashi ,  Takashi Kikukawa ,  Narutoshi Fukuzawa

IPC分类号： G11B7/125

CPC分类号： G11B7/1267

摘要： A method for determining recording laser power on a super-resolution optical recording medium, on which information is recorded on a super-resolution optical recording medium by irradiating a laser beam modulated into a recording pulse train according to recording data to thereby form a recording mark train including recording marks and spaces smaller than the resolution limit of a reproduction optical system and recording marks and spaces equal to or larger than the resolution limit, is provided. At the time of recording, the method determines a minimum value and a maximum value of recordable laser powers determined by test-writing before recording, and determines a maximum value of a recordable range of laser power by adding to the minimum value one-third of a difference between the maximum value of the recordable laser powers and the minimum value. The method determines an optimal range of recording laser power from the minimum value of recordable laser powers to the maximum value of the recordable range.

摘要翻译： 一种用于在超分辨率光学记录介质上确定记录激光功率的方法，通过根据记录数据照射调制到记录脉冲串中的激光束将信息记录在超分辨率光学记录介质上，从而形成记录标记 提供包括小于再现光学系统的分辨率限制的记录标记和空间的记录，以及等于或大于分辨率极限的记录标记和空格。 在记录时，该方法确定在记录之前通过测试写入确定的可记录激光功率的最小值和最大值，并且通过将最大值加到三分之一的最小值中来确定激光功率的可记录范围的最大值 可记录激光功率的最大值与最小值之间的差。 该方法从可记录激光功率的最小值到可记录范围的最大值确定记录激光功率的最佳范围。

公开(公告)号：US20070247988A1

公开(公告)日：2007-10-25

申请号：US11785879

申请日：2007-04-20

申请人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

发明人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

IPC分类号： G11B19/00

CPC分类号： G11B7/268 ,  G11B7/005 ,  G11B19/041

摘要： A method and apparatus for measuring the read stability of an optical disc are provided. Specifically, readout of the optical disc is repeated at each of at least two read laser beams powers being different from each other. A graph is drawn in which the inverses of the read powers are plotted on a horizontal axis and in which on a vertical axis is plotted the logarithm of a repeated readout number for each of the read powers. Here, the repeated readout number is the number of repetitions of the readout when a characteristic value for the number of repetitions of the readout varies and reaches a predetermined value. The read stability of the optical disc is evaluated by using the gradient of the graph.

摘要翻译： 提供了一种用于测量光盘的读取稳定性的方法和装置。 具体而言，在至少两个彼此不同的读取激光束功率中的每一个处重复光盘的读出。 绘制图形，其中读取功率的反转在水平轴上绘制，并且在垂直轴上绘制每个读取功率的重复读出数的对数。 这里，重复的读出数是当读出的重复次数的特性值变化并达到预定值时的读出的重复次数。 通过使用图的梯度来评估光盘的读取稳定性。

公开(公告)号：US20070183289A1

公开(公告)日：2007-08-09

申请号：US11699439

申请日：2007-01-30

申请人： Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi

发明人： Narutoshi Fukuzawa ,  Takashi Kikukawa ,  Tatsuhiro Kobayashi

IPC分类号： G11B7/0045 ,  G11B7/24

CPC分类号： G11B7/00452 ,  G11B7/259 ,  G11B2007/24306 ,  G11B2007/2432

摘要： When a recording mark and a space, each having a size depending on a modulation code corresponding to information to be recorded, are formed in a super-resolution optical recording medium which has at least a substrate and a recording layer, a super-resolution layer, and a light transmitting layer on the substrate, a space shorter than at least the resolution limit of a reproducing optical system is formed so that the space has a crescent shape when plan view from top surface and a convex section when viewed in a direction normal to a track, thereby allowing high carrier-to-noise ratio (CNR) recording of information.

摘要翻译： 当在至少具有基板和记录层的超分辨率光学记录介质中形成具有取决于要记录的信息的调制码的尺寸的记录标记和空间时，超分辨率层 和基板上的透光层，形成比再现光学系统的分辨率极限短的空间，使得当从正面的方向观察时，从上表面观察平面时的空间具有新月形状 到轨道，从而允许信息的高载波噪声比（CNR）记录。

公开(公告)号：US20070098946A1

公开(公告)日：2007-05-03

申请号：US10561090

申请日：2004-06-30

申请人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

发明人： Takashi Kikukawa ,  Narutoshi Fukuzawa ,  Tatsuhiro Kobayashi

IPC分类号： B32B3/02

CPC分类号： G11B7/2433 ,  B82Y10/00 ,  G11B7/2403 ,  G11B7/24065 ,  G11B7/252 ,  G11B7/2534 ,  G11B7/2542 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  G11B2007/25716 ,  G11B2007/25718

摘要： It is an object of the present invention to provide an optical recording disc which can record data constituted by a recording mark train including recording marks and blank regions neighboring recording marks therein and reproduce the data therefrom even in the case where the lengths of a recording mark and a blank region between neighboring recording marks are shorter than the resolution limit, thereby markedly increasing the storage capacity thereof and can improve a C/N ratio of a reproduced signal and the reproduction durability thereof. An optical recording disc includes a substrate 2, a reflective layer 3, a third dielectric layer 4, a light absorption layer 5, a second dielectric layer 6, a decomposition reaction layer 7 containing platinum oxide as a primary component, a first dielectric layer 8 and a light transmission layer 9 and is constituted so that when the optical recording disc is irradiated with a laser beam 20 from the side of the light transmission layer 9, the platinum oxide contained in the decomposition reaction layer 7 as a primary component is decomposed into platinum and oxygen so that a bubble pit is formed in the decomposition reaction layer 7 by thus generated oxygen gas and fine particles of the noble metal penetrate into the bubble pit, thereby forming a recording mark in the decomposition reaction layer 7.

摘要翻译： 本发明的目的是提供一种光学记录盘，其可以记录由包括记录标记和包括记录标记在内的空白区域的记录标记列构成的数据，并且即使在记录标记的长度的情况下再现数据 并且相邻记录标记之间的空白区域比分辨率极限短，从而显着增加其存储容量，并且可以提高再现信号的C / N比和其再现耐久性。 光记录盘包括基板2，反射层3，第三电介质层4，光吸收层5，第二电介质层6，含有氧化铂作为主要成分的分解反应层7，第一介电层8 和光透射层9，并且被构造成使得当从光透射层9的侧面照射激光束20时，作为主要成分的分解反应层7中包含的氧化铂被分解成 铂和氧，使得通过这样产生的氧气在分解反应层7中形成气泡，并且贵金属的细颗粒渗透到气泡坑中，从而在分解反应层7中形成记录标记。