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公开(公告)号：US06618349B2
公开(公告)日：2003-09-09
申请号：US09788589
申请日：2001-02-21
IPC分类号： G11B700
CPC分类号： G11B7/007
摘要： In an optical recording medium of land/groove recording system, a sufficient tilt margin and a reduced cross talk are realized simultaneously with a sufficiently increased output. Provided is an optical recording medium having a light-transmitting substrate formed with grooves wherein the grooves and the region between adjacent grooves are used for the recording track, and a reading beam is irradiated through the light-transmitting substrate, wherein the relations: −12.6T+15.6≦x≦25T−3.8, and 0.55≦T≦0.68 are satisfied when the reading beam has a wavelength of &lgr;, the light-transmitting substrate has a refractive index at the wavelength &lgr; of n, the reading optical system has a numerical aperture of NA, recording track pitch is PT, the groove has a depth of &lgr;/(x·n), and T is PT/(&lgr;/NA).
摘要翻译： 在平台/凹槽记录系统的光记录介质中，充分提高输出同时实现足够的倾斜余量和减少的串扰。 提供了一种光记录介质，其具有形成有沟槽的光透射基板，其中沟槽和相邻凹槽之间的区域用于记录轨道，并且通过透光基板照射读取光束，其中满足关系： 当读取光束具有lambd的波长时，透光衬底的折射率为n的波长，读取光学系统具有NA的数值孔径，记录轨道间距为PT，槽具有lambd的深度 /（xn），T为PT /（lambd / NA）。
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公开(公告)号：US06605328B2
公开(公告)日：2003-08-12
申请号：US09886258
申请日：2001-06-22
IPC分类号： B32B302
CPC分类号： G11B7/2433 , G11B7/2534 , G11B7/2542 , G11B7/256 , G11B7/2578 , G11B7/259 , G11B2007/24306 , G11B2007/2431 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716 , Y10T428/21
摘要： In an optical recording medium comprising a phase change recording layer (4) containing Sb and optionally, Te and/or In as a main component, the recording layer is able to be crystallized to provide a crystallized region which contains rhombohedral crystals consisting essentially of Sb and is substantially free of a crystal phase other than the rhombohedral crystals. When the recording layer contains a rare earth element, Zr, Hf, Ti or Sn as an auxiliary component, the medium has a dielectric layer (31) composed of silicon oxide, silicon nitride, aluminum oxide, or a mixture of zinc sulfide and at least 30 mol % of silicon oxide, disposed contiguous to and in front of the recording layer (4) as viewed from the recording/reading beam incident side. The medium has a high transfer rate and improved thermal stability.
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公开(公告)号：US06999392B2
公开(公告)日：2006-02-14
申请号：US09971703
申请日：2001-10-09
CPC分类号： G11B7/24085 , G11B7/00454 , G11B7/006
摘要： Increase of jitter in a phase change optical recording medium is suppressed with no extreme decrease in the crystallization speed of the recording layer when the medium is overwritten at a high linear velocity. In addition, in a disk-shaped medium operated at a constant angular velocity, the overwriting is accomplished with the increase of jitter suppressed over the entire area of the medium. Provided is an optical recording method for recording a disk-shaped optical recording medium having a phase change recording layer which is rotated at a constant angular velocity, wherein amorphous recorded marks are formed in the recording layer. In this method, the minimum recorded mark is formed such that WL/ML incrementally or gradually decreases from the radially inner side to the radially outer side of the optical recording medium, when the minimum signal has a length of SL, and when the minimum recorded mark corresponding to said minimum signal has its maximum width of MW, EW is 0.1 MW; the position on the leading edge side of the recorded mark at the width of EW is designated effective leading edge; and the position on the trailing edge side of the recorded mark at the width of EW is designated effective trailing edge; the distance between the effective leading edge and the effective trailing edge is designated effective length ML; and the distance between the effective leading edge and the position at which the width starts to decrease on the trailing edge side is designated WL.
摘要翻译： 当以高线速度重写介质时，抑制了相变光记录介质中的抖动的增加，而在记录层的结晶速度没有极度降低的情况下。 另外，在以恒定的角速度操作的盘形介质中，通过在介质的整个区域上抑制的抖动的增加来实现重写。 提供了一种用于记录具有以恒定角速度旋转的相变记录层的盘形光学记录介质的光学记录方法，其中在记录层中形成非晶体记录标记。 在该方法中，形成最小记录标记，使得W L L / M L L从光记录介质的径向内侧向径向外侧逐渐地逐渐减小 当最小信号具有长度为S L L时，当对应于所述最小信号的最小记录标记具有M W的最大宽度时，E W 为0.1MW; 记录标记的前缘侧的位置在E
的宽度被指定为有效前沿; 并且在E＆lt; W＆gt;宽度的记录标记的后缘侧的位置被指定为有效后缘; 有效前沿和有效后沿之间的距离被指定为有效长度M L L; 并且有效前沿与后缘侧宽度开始减小的位置之间的距离被指定为W L L。 -
公开(公告)号：US06798733B2
公开(公告)日：2004-09-28
申请号：US09852730
申请日：2001-05-11
IPC分类号： G11B700
CPC分类号： G11B7/258 , G11B7/00454 , G11B7/126 , G11B7/24 , G11B7/243 , G11B7/257 , G11B7/2585 , G11B7/259 , G11B7/26 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316
摘要： When information is recorded in an optical recording medium having a recording layer by irradiating a laser beam thereto through an optical system, the recording is carried out under the conditions: &lgr;/NA≦680 nm and n·Tw≦22 ns wherein the laser beam has a wavelength &lgr;, the optical system includes an objective lens having a numerical aperture NA, the window margin is Tw, and a signal length corresponding to the shortest recorded mark is n·Tw. The method provides for a high transfer rate and minimizes the jitter.
摘要翻译： 当通过光学系统照射激光束将信息记录在具有记录层的光学记录介质中时，在λ/ NA <= 680nm和n.Tw <= 22ns的条件下进行记录，其中 激光束具有波长λ，光学系统包括具有数值孔径NA的物镜，窗口边距为Tw，与最短记录标记对应的信号长度为n.Tw。 该方法提供高传输速率并使抖动最小化。
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5.发明授权公开(公告)号：US07859968B2
公开(公告)日：2010-12-28
申请号：US12352304
申请日：2009-01-12
IPC分类号： G11B7/0045
CPC分类号： G11B7/005 , G11B7/1263 , G11B7/24
摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.
摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。
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6.发明授权公开(公告)号：US07496019B2
公开(公告)日：2009-02-24
申请号：US10125476
申请日：2002-04-19
IPC分类号： G11B7/0045
CPC分类号： G11B7/005 , G11B7/1263 , G11B7/24
摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.
摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录的标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。
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公开(公告)号：US20080239934A1
公开(公告)日：2008-10-02
申请号：US12076070
申请日：2008-03-13
申请人： Hiroshi Shingai , Tatsuya Kato , Masanori Kosuda , Hiroshi Takasaki , Hideki Hirata , Hajime Utsunomiya
发明人： Hiroshi Shingai , Tatsuya Kato , Masanori Kosuda , Hiroshi Takasaki , Hideki Hirata , Hajime Utsunomiya
IPC分类号： G11B7/24
CPC分类号： G11B7/2433 , G11B7/24038 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/25706 , G11B2007/25715 , Y10T428/21
摘要： An optical recording medium is provided which includes two or more information layers in which an Sb-based eutectic material is used as the material for a recording film of a translucent information layer. There is also provided a recording film material for the optical recording medium. The translucent information layer is configured to include a recording film formed of a phase change material SbxGeyInz containing Sb, Ge, and In in an atomic ratio of x:y:z, where 5≦y≦15 and 4≦z≦15 are satisfied. The recording film further includes Te in an atomic ratio of a, provided that x+y+z+a=100 and 4≦a≦15 are satisfied. An interface layer formed of a ZrO2—Cr2O3 film having a thickness of 2 nm or more and 10 nm or less is provided on the laser beam incident side of the recording film. When the compositional ratio of the ZrO2—Cr2O3 film is given by ZrO2:Cr2O3=B:C (mol %), 20≦B≦90, 10≦C≦80, and B+C=100 are satisfied.
摘要翻译： 提供了一种光记录介质，其包括其中使用Sb基共晶材料作为半透明信息层的记录膜的材料的两个或更多个信息层。 还提供了一种用于光学记录介质的记录膜材料。 半透明信息层被配置为包括由包含Sb，Ge和Sb的相变材料Sb x Sub x Z z形成的记录膜;以及 在x：y：z的原子比中，其中5 <= y <= 15且4 <= z <= 15。 如果满足x + y + z + a = 100和4 <= a <= 15，则记录膜还包括原子比a的Te。 提供由厚度为2nm以上且10nm以下的ZrO 2·2L 2 O 3·3膜形成的界面层 在记录膜的激光束入射侧。 当ZrO 2→2→2→3 <3>膜的组成比由ZrO 2：Cr： B = C（摩尔％），20 <= B <= 90，10 <= C <= 80，B + C = 100。
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公开(公告)号：US20080175125A1
公开(公告)日：2008-07-24
申请号：US12010163
申请日：2008-01-22
申请人： Hiroshi Shingai , Tatsuya Kato , Masanori Kosuda , Hiroshi Takasaki , Hideki Hirata , Hajime Utsunomiya
发明人： Hiroshi Shingai , Tatsuya Kato , Masanori Kosuda , Hiroshi Takasaki , Hideki Hirata , Hajime Utsunomiya
IPC分类号： G11B3/74
CPC分类号： G11B7/24038 , G11B7/2433 , G11B7/2578 , G11B7/259 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/25715 , Y10T428/21
摘要： A next-generation optical recording medium has two or more information layers which include a translucent information layer. The translucent information layer has a recording film and an interface layer, provided adjacent to the recording film on the side of the light incident surface. The recording film is made of a phase change material having SbxTeyGez elements and elemental ratios. Y satisfies 5≦y≦15 and z satisfies 5≦z≦15. When In having an elemental ratio of a is further added and x+y+z+a=100 holds, a satisfies 4≦a≦15. The interface layer comprises of ZrO2—Cr2O3 film thickness of which is in a range of from 2 nm to 10 nm. When ZrO2:Cr2O3═C:D (mol %), the compositional ratios ZrO2 and Cr2O3 in the ZrO2—Cr2O3 film, holds, the C satisfies 20≦C≦90, and the D satisfies 10≦D≦80, and the C and the D satisfy C+D=100. The ZrO2 is stabilized ZrO2 which contains Y2O3, when ZrO2:Y2O3=(100-X):X (mol %), the compositional ratios ZrO2 and Y2O3 in the stabilized ZrO2, holds, the X satisfies 2≦X≦10.
摘要翻译： 下一代光记录介质具有包括半透明信息层的两个或多个信息层。 半透明信息层具有记录膜和界面层，与光入射表面侧的记录膜相邻。 该记录膜由具有Sb x Si x Y y z z z元素和元素比的相变材料制成。 Y满足5 <= y <= 15，z满足5 <= z <= 15。 当进一步添加具有a的元素比率的In并且x + y + z + a = 100成立时，满足4 <= a <= 15。 界面层包含ZrO 2→2→2→3→3→3膜，其膜厚在2nm至10nm的范围内。 当ZrO 2：Cr 2 O 3 -C（D）（摩尔％）时，组成比ZrO 2 < 和ZrO 2 -r 2 O 3 O 3膜中的Cr 2 O 3 O 3 满足20 <= C <= 90，D满足10 <= D <= 80，C和D满足C + D = 100。 当ZrO 2 2时，ZrO 2 2是稳定的含有Y 2 O 3 O 3的ZrO 2 （100-X）：X（摩尔％），组成比ZrO 2和Y 2 3 <3>，X满足2 <= X <= 10。
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9.发明授权Optical information medium having high resolution beyond a diffraction limit and reading method 有权光学信息介质具有超过衍射极限的分辨率和读取方法公开(公告)号：US06965556B1
公开(公告)日：2005-11-15
申请号：US09609898
申请日：2000-07-03
CPC分类号： G11B7/24085 , B82Y10/00 , G11B7/0052 , G11B7/24
摘要： In an optical information medium having an information bearing surface having projections and depressions and/or capable of forming recorded marks, a functional layer is added. The information borne on the information bearing surface can be read by using reading light of a wavelength longer than 4NA·PL wherein PL is the minimum size of the projections and depressions or the recorded marks and NA is the numerical aperture of a reading optical system, setting the power of the reading light within such a range that the functional layer does not change its complex index of refraction, and irradiating the reading light to the information bearing surface constructed by the functional layer or to the information bearing surface through the functional layer or to the functional layer through the information bearing surface. The medium enables reading at a high resolution beyond the diffraction limit.
摘要翻译： 在具有具有凹凸和/或能够形成记录标记的信息承载面的光信息介质中，添加功能层。 可以通过使用长于4NA的波长的读取光读取承载在信息承载表面上的信息。其中P L L是最小尺寸的凹凸 或记录标记，NA是读取光学系统的数值孔径，将读取光的功率设定在功能层不改变其复杂折射率的范围内，并将读取光照射到信息承载面 通过功能层或信息承载表面通过功能层或通过信息承载表面到功能层构成。 该介质能够以超过衍射极限的高分辨率进行读取。
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公开(公告)号：US07960006B2
公开(公告)日：2011-06-14
申请号：US12010163
申请日：2008-01-22
申请人： Hiroshi Shingai , Tatsuya Kato , Masanori Kosuda , Hiroshi Takasaki , Hideki Hirata , Hajime Utsunomiya
发明人： Hiroshi Shingai , Tatsuya Kato , Masanori Kosuda , Hiroshi Takasaki , Hideki Hirata , Hajime Utsunomiya
IPC分类号： B32B3/02
CPC分类号： G11B7/24038 , G11B7/2433 , G11B7/2578 , G11B7/259 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/25715 , Y10T428/21
摘要： A next-generation optical recording medium has two or more information layers which include a translucent information layer. The translucent information layer has a recording film and an interface layer, provided adjacent to the recording film on the side of the light incident surface. The recording film is made of a phase change material having SbxTeyGez elements and elemental ratios. Y satisfies 5≦y≦15 and z satisfies 5≦z≦15. When In having an elemental ratio of a is further added and x+y+z+a=100 holds, a satisfies 4≦a≦15. The interface layer comprises of ZrO2—Cr2O3 film thickness of which is in a range of from 2 nm to 10 nm. When ZrO2:Cr2O3═C:D (mol %), the compositional ratios ZrO2 and Cr2O3 in the ZrO2—Cr2O3 film, holds, the C satisfies 20≦C≦90, and the D satisfies 10≦D≦80, and the C and the D satisfy C+D=100. The ZrO2 is stabilized ZrO2 which contains Y2O3, when ZrO2:Y2O3=(100−X):X (mol %), the compositional ratios ZrO2 and Y2O3 in the stabilized ZrO2, holds, the X satisfies 2≦X≦10.
摘要翻译： 下一代光记录介质具有包括半透明信息层的两个或多个信息层。 半透明信息层具有记录膜和界面层，与光入射表面侧的记录膜相邻。 记录膜由具有SbxTeeyGez元素和元素比的相变材料制成。 Y满足5＆nlE; y＆nlE; 15和z满足5＆nlE; z＆nlE; 15。 当进一步添加具有a的元素比率的In并且x + y + z + a = 100成立时，a满足4＆nlE; a＆nlE; 15。 界面层由ZrO 2 -Cr 2 O 3膜厚度在2nm至10nm的范围内。 当ZrO 2：Cr 2 O 3 = C：D（摩尔％）时，ZrO 2 -Cr 2 O 3膜中的ZrO 2和Cr 2 O 3的组成比保持为C，满足20＆nlE; C＆nlE; 90，D满足10＆nlE; D＆nlE; 80，C D满足C + D = 100。 当ZrO 2：Y 2 O 3 =（100-X）：X（摩尔％）时，ZrO 2为稳定的含有Y 2 O 3的ZrO 2，稳定的ZrO 2中的ZrO 2和Y 2 O 3的组成比例成立，X满足2＆nlE; X＆nlE; 10。
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