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    Optical recording medium
    2.
    发明授权
    Optical recording medium 失效
    光记录介质

    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

    Optical recording method and medium
    3.
    发明授权
    Optical recording method and medium 有权
    光记录方法和介质

    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。

    Optical recording medium and its designing method
    4.
    发明授权
    Optical recording medium and its designing method 失效
    光记录介质及其设计方法

    公开(公告)号：US06618349B2

    公开(公告)日：2003-09-09

    申请号：US09788589

    申请日：2001-02-21

    申请人： Hiroyasu Inoue ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tetsuro Mizushima ,  Tatsuya Kato

    发明人： Hiroyasu Inoue ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tetsuro Mizushima ,  Tatsuya Kato

    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）。

    Optical recording medium
    5.
    发明授权
    Optical recording medium 失效
    光记录介质

    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

    Optical recording medium
    6.
    发明授权
    Optical recording medium 失效
    光记录介质

    公开(公告)号：US6146733A

    公开(公告)日：2000-11-14

    申请号：US212866

    申请日：1998-12-17

    申请人： Hiroyasu Inoue ,  Tatsuya Kato ,  Hajime Utsunomiya

    发明人： Hiroyasu Inoue ,  Tatsuya Kato ,  Hajime Utsunomiya

    IPC分类号： G11B7/006 ,  G11B7/007 ,  G11B7/24 ,  G11B7/243 ,  G11B7/252 ,  G11B7/254 ,  G11B7/257 ,  B32B3/02

    CPC分类号： G11B7/257 ,  G11B7/24 ,  G11B7/243 ,  G11B7/252 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  G11B2007/25716 ,  G11B7/006 ,  G11B7/00718 ,  Y10S428/913 ,  Y10S430/142 ,  Y10T428/21

    摘要： A phase change type optical recording medium comprises a dielectric layer 1a, a dielectric layer 1b, a phase change type recording layer and a second dielectric layer in the described order. The recording layer satisfies Ac/Aa.gtoreq.0.8 where Ac is an absorption coefficient of the recording layer in a crystalline region and Aa is an absorption coefficient of the recording layer in an amorphous region. The dielectric layer 1a comprises ZnS--SiO.sub.2 as main components and the dielectric layer 1b comprises a metal nitride or ZnS--SiO.sub.2 having an SiO.sub.2 content of 40 to 80 mol % as main components. At least an area of the second dielectric layer that is in contact with the recording layer comprises a metal nitride, a rare earth oxide, silicon oxide or ZnS--SiO.sub.2 having an SiO.sub.2 content of at least 40 mol% as main components. However, an optical recording medium comprising a dielectric layer 1a having an SiO.sub.2 content of 2 mol % to less than 40 mol % and a second dielectric layer having an SiO.sub.2 content of 40 to 80 mol % is precluded from the invention.

    摘要翻译： 相变型光记录介质包括介电层1a，电介质层1b，相变型记录层和第二电介质层。 记录层满足Ac / Aa> / = 0.8，其中Ac是结晶区中记录层的吸收系数，Aa是非晶区中记录层的吸收系数。 电介质层1a包括ZnS-SiO 2作为主要成分，电介质层1b包含SiO2含量为40〜80mol％的金属氮化物或ZnS-SiO 2为主要成分。 与记录层接触的第二电介质层的至少一个区域包括SiO 2含量为至少40mol％作为主要成分的金属氮化物，稀土氧化物，氧化硅或ZnS-SiO 2。 然而，本发明不包括具有2mol％至小于40mol％的SiO2含量的介电层1a和SiO含量为40至80mol％的第二介电层的光学记录介质。

    Optical recording method and optical recording medium
    7.
    发明授权
    Optical recording method and optical recording medium 有权
    光记录方法和光记录介质

    公开(公告)号：US06999392B2

    公开(公告)日：2006-02-14

    申请号：US09971703

    申请日：2001-10-09

    申请人： Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroyasu Inoue ,  Hiroshi Shingai ,  Yoshitomo Tanaka

    发明人： Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroyasu Inoue ,  Hiroshi Shingai ,  Yoshitomo Tanaka

    IPC分类号： G11B7/00 ,  G11B7/24

    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。

    Optical recording medium including protruding winding parts used as prepits
    9.
    发明授权
    Optical recording medium including protruding winding parts used as prepits 失效
    光记录介质，包括用作预凹坑的突出的绕组部分

    公开(公告)号：US06665260B2

    公开(公告)日：2003-12-16

    申请号：US09899152

    申请日：2001-07-06

    申请人： Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroyasu Inoue ,  Hideki Hirata

    发明人： Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroyasu Inoue ,  Hideki Hirata

    IPC分类号： G11B724

    CPC分类号： G11B7/24085 ,  G11B7/00745 ,  G11B7/261

    摘要： In an optical recording medium wherein grooves or lands formed on the supporting substrate are used for the recording tracks, and wherein prepits are also formed, production of the supporting substrate and high density recording are facilitated. This medium comprises a supporting substrate and a recording layer on the substrate wherein the surface of the supporting substrate on which the recording layer is formed is formed with alternating continuous convex portions and continuous concave portions which are substantially parallel to each other. The adjacent continuous convex portions are connected by bridging convex portions extending in transverse direction, and the bridging convex portion has a planar configuration that its width is minimum at or near the center between the adjacent continuous convex portions. The supporting substrate is produced by using a master disk which has a resist layer formed with mother patterns of each of the continuous convex portions, continuous concave portions, and prepits. In the production of the master disk, the resist layer is intermittently irradiated with one exposure beam, and the area irradiated is used as the mother pattern of the continuous concave portions or convex portions, and the area which was not irradiated is used as the mother pattern of the prepits.

    摘要翻译： 在其中形成在支撑基板上的槽或焊盘用于记录轨道的光记录介质中，并且还形成预凹坑，便于生产支撑基板和高密度记录。 该介质包括支撑衬底和衬底上的记录层，其中形成有记录层的支撑衬底的表面形成有彼此基本平行的交替的连续凸部和连续凹部。 相邻的连续凸部通过在横向延伸的桥接凸部连接，并且桥接凸部具有在相邻的连续凸部之间的中心处或其附近的宽度最小的平面构造。 支撑基板通过使用具有形成有连续凸部，连续凹部和预凹坑中的每一个的母体图案的抗蚀剂层的母盘来制造。 在母盘的制造中，用一个曝光束间歇地照射抗蚀剂层，照射的面积用作连续凹部或凸部的母体图案，未照射的区域用作母体 预制图案。