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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：US06495308B2
公开(公告)日：2002-12-17
申请号：US09820663
申请日：2001-03-30
IPC分类号： G11B724
CPC分类号： G11B7/24 , G11B7/243 , G11B7/2534 , G11B7/258 , G11B7/2585 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , Y10S430/146
摘要： An optical recording medium having at least a light-transmitting substrate, a recording layer recorded by heat mode recording, and a reflective layer comprising a metal or a semimetal disposed in this order exhibiting reduced signal noise in the reading and improved recording characteristics are provided. A method for producing such optical recording medium is also provided, and this method includes the step of changing bonding state of the element(s) constituting the reflective layer at least in the area to be recorded.
摘要翻译： 提供了至少具有透光性基板的光记录介质，通过热模式记录记录的记录层，以及包括依次设置的金属或半金属的反射层，其在读取中改善了信号噪声并提高了记录特性。 还提供了这种光记录介质的制造方法，该方法包括至少在要记录的区域中改变构成反射层的元件的接合状态的步骤。
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公开(公告)号：US06677104B2
公开(公告)日：2004-01-13
申请号：US09779513
申请日：2001-02-09
IPC分类号： G11B724
CPC分类号： G11B7/258 , G11B7/24 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/259 , G11B7/2595 , G11B11/10584 , Y10S430/146
摘要： Noise of the read-out signal is reduced in an optical information medium comprising a supporting substrate and a reflective layer disposed on the supporting substrate wherein the reading beam irradiates the medium from the side where the reflective layer is formed. In addition, noise of the read-out signal is reduced without adversely affecting the recording properties in an optical information medium comprising a supporting substrate, and a reflective layer and a recording layer disposed on the supporting substrate in this order wherein the recording beam irradiates the medium from the side where the reflective layer is formed. In the medium, the reflective layer has a crystallite size of up to 30 nm.
摘要翻译： 在包括支撑基板和设置在支撑基板上的反射层的光学信息介质中，读出信号的噪声减小，其中读取光束从形成反射层的一侧照射介质。 此外，减少读出信号的噪声，而不会对包括支撑衬底的光学信息介质以及设置在支撑衬底上的反射层和记录层的光学信息介质的记录特性产生不利影响，其中记录光束照射 介质从反射层形成的一侧。 在介质中，反射层的微晶尺寸高达30nm。
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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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7.发明授权
公开(公告)号：US6115351A
公开(公告)日：2000-09-05
申请号：US221125
申请日：1998-12-28
申请人： Hajime Utsunomiya , Tatsuya Kato , Hiroyasu Inoue
发明人： Hajime Utsunomiya , Tatsuya Kato , Hiroyasu Inoue
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/24 , G11B7/254 , G11B7/257 , G11B7/26
CPC分类号： G11B7/2578 , G11B7/006 , G11B7/24 , G11B7/26 , G11B2007/24308 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/2571 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716 , G11B2007/25718 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/2542 , G11B7/256 , G11B7/2585 , G11B7/2595
摘要： Prevented is the reliability loss in phase change optical recording media during high-temperature storage, and also prevented is the phenomenon of self-erase by which a part of record marks having been formed in the media are erased due to the lateral heat diffusion into the recording layer while recording laser beams are irradiated to the media. The optical recording medium disclosed has a recording layer of a phase change type and is applied to driving units for overwriting it at a linear velocity of V.sub.0. The medium is so designed as to satisfy the requirement of 1
摘要翻译： 防止在高温存储期间相变光学记录介质中的可靠性损失，并且还防止了由于横向热扩散到介质中而在介质中形成的记录标记的一部分被擦除的自擦除现象 记录激光束的记录层被照射到介质上。 所公开的光记录介质具有相变型的记录层，并被施加到用于以V 0的线速度重写的驱动单元。 该介质被设计成满足1
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公开(公告)号：US6096400A
公开(公告)日：2000-08-01
申请号：US220344
申请日：1998-12-24
申请人： Hiroyasu Inoue , Tatsuya Kato , Hajime Utsunomiya
发明人： Hiroyasu Inoue , Tatsuya Kato , Hajime Utsunomiya
IPC分类号： G11B7/0045 , G11B7/007 , G11B7/24 , B32B3/02
CPC分类号： G11B7/24079 , G11B7/00718 , G11B7/24 , G11B7/00454 , Y10T428/21
摘要： In a phase change-type optical recording medium of absorption coefficient control structure used by land/groove recording system, difference in reproduction characteristics between the land and the groove is minimized while ensuring sufficient output of the tracking signal. In the optical recording medium of the present invention, light absorption coefficient at the wavelength of said recording/reproducing beam is such that: Ac/Aa.gtoreq.0.8 when light absorption coefficient in crystalline region is Ac and light absorption coefficient in amorphous region is Aa; relation between groove width W.sub.G and land width W.sub.L is such that: x=2W.sub.G /(W.sub.L +W.sub.G).gtoreq.1.03; and the relation: .lambda.max.sup.i
摘要翻译： 在由槽脊/沟槽记录系统使用的吸收系数控制结构的相变型光学记录介质中，在确保足够的跟踪信号的输出的同时，使焊盘和凹槽之间的再现特性差异最小化。 在本发明的光记录介质中，所述记录/再现光束的波长处的光吸收系数使得当结晶区域的光吸收系数为Ac时的Ac / Aa> / = 0.8，非晶区域的光吸收系数为 阿 槽宽度WG和焊盘宽度WL之间的关系使得：x = 2WG /（WL + WG）> / = 1.03; 当反射光谱中的局部最小值的波长为λ迷你时，满足λmaxi <λu
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公开(公告)号：US07197005B2
公开(公告)日：2007-03-27
申请号：US09971704
申请日：2001-10-09
申请人： Tatsuya Kato , Hideki Hirata , Hajime Utsunomiya , Hiroyasu Inoue
发明人： Tatsuya Kato , Hideki Hirata , Hajime Utsunomiya , Hiroyasu Inoue
IPC分类号： G11B7/24
CPC分类号： G11B7/24079 , G11B7/00454 , G11B7/006 , G11B7/00718 , G11B7/243 , G11B7/256 , G11B7/2578 , G11B7/258 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316
摘要： In an optical recording medium including a grooved light-transparent substrate, a phase change recording layer, a dielectric layer and a reflective layer, recording is carried out by irradiating a laser beam to the recording layer through an objective lens in an optical system. The recording is carried out in a groove recording mode under the conditions: 0.48≦PT/(λ/NA)≦0.74, and PT≦0.50 μm wherein λ is a laser beam wavelength, NA is an objective lens numerical aperture, and PT is a track pitch, thereby forming a recorded mark having opposite ends extending out of the groove. This enables high density recording and increases the data transfer rate of a phase change optical recording medium.
摘要翻译： 在包括带槽的光透明基板，相变记录层，电介质层和反射层的光记录介质中，通过光学系统中的物镜将激光束照射到记录层来进行记录。 在凹槽记录模式下，在0.48≤P /（λ/ NA）<= 0.74和P <=0.50μm的条件下进行记录 其中λ是激光束波长，NA是物镜数值孔径，并且P T T是轨道间距，从而形成具有相对端延伸出凹槽的记录标记。 这使得能够进行高密度记录并增加相变光学记录介质的数据传送速率。
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公开(公告)号：US06192024B1
公开(公告)日：2001-02-20
申请号：US09220444
申请日：1998-12-24
申请人： Hiroyasu Inoue , Tatsuya Kato , Hajime Utsunomiya
发明人： Hiroyasu Inoue , Tatsuya Kato , Hajime Utsunomiya
IPC分类号： G11B724
CPC分类号： G11B7/24 , G11B7/00718 , G11B7/24079 , G11B7/243 , G11B7/2534 , G11B7/2542 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B7/2595 , G11B2007/24308 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316
摘要： In a phase change-type optical recording medium of absorption coefficient control structure used by land/groove recording system, difference in reproduction characteristics between the land and the groove is minimized while ensuring sufficient output of the tracking signal. In the optical recording medium of the present invention, light absorption coefficient at the wavelength of said recording/reproducing beam is such that: Ac/Aa≧0.8 when light absorption coefficient in crystalline region is Ac and light absorption coefficient in amorphous region is Aa; relation between groove width WG and land width WL is such that: 0.97≦2WG/(WL+WG)
摘要翻译： 在由槽脊/沟槽记录系统使用的吸收系数控制结构的相变型光学记录介质中，在确保足够的跟踪信号的输出的同时，使焊盘和凹槽之间的再现特性差异最小化。 在本发明的光记录介质中，所述记录/再现光束的波长处的光吸收系数使得当结晶区域的光吸收系数为Ac时，Ac / Aa> = 0.8，非晶区域的光吸收系数为Aa ; 槽宽度WG与焊盘宽度WL之间的关系为：0.97 <= 2WG /（WL + WG）<1.03; 当反射光谱中局部最小值的波长为lambdmini时，满足lambdmini <= lambdu
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