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71. 发明授权

US06661760B2 Optical recording method and optical recording medium 有权
标题翻译：光记录方法和光记录介质
公开(公告)号：US06661760B2
公开(公告)日：2003-12-09
申请号：US10141981
申请日：2002-05-10
申请人： Natsuko Nobukuni , Michikazu Horie
发明人： Natsuko Nobukuni , Michikazu Horie
IPC分类号： G11B700
CPC分类号： G11B7/0062 , G11B7/00456 , G11B7/126 , G11B7/243 , G11B7/2534 , G11B7/2585 , G11B11/10506 , G11B11/10528 , G11B11/1053 , G11B11/10595 , G11B2007/24304 , G11B2007/24306 , G11B2007/24308 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/2432
摘要： An optical recording method for recording mark length-modulated information on a recording medium by using a plurality of recording mark lengths. The optical recording method comprises the steps of: when a time length of one recording mark is denoted nT (T is a reference clock period equal to or less than 25 ns, and n is a natural number equal to or more than 2), (i) dividing the time length of the recording mark nT into &eegr;1T, &agr;1T, &bgr;1T, &agr;2T, &bgr;2T, . . . , &agr;iT, &bgr;iT, . . . , &agr;mT, &bgr;mT, &eegr;2T in that order (m is a pulse division number; &Sgr;i(&agr;i+&bgr;i)+&eegr;1+&eegr;2=n; &agr;i (1≦i≦m) is a real number >0; &bgr;i (1≦i≦m−1) is a real number>0; &bgr;m is a real number ≧0; and &eegr;1 is a real number of −2≦&eegr;1≦2 and &eegr;2 is a real number of −2≦&eegr;2≦2); radiating recording light with a recording power Pwi in a time duration of &agr;iT (1≦i≦m), and radiating recording light with a bias power Pbi in a time duration of &bgr;iT (1≦i≦m), the bias power being Pbi
摘要翻译：一种用于通过使用多个记录标记长度将标记长度调制信息记录在记录介质上的光学记录方法。光记录方法包括以下步骤：当一个记录标记的时间长度表示为nT（T是等于或小于25ns的参考时钟周期，n是等于或大于2的自然数）时，（ i）将记录标记nT intoin的时间长度除以（m是脉冲数; Sigmai（alphai + betai）+ eta1 + eta2 = n; alphai（1≤i≤m）是实数] 0; betai（1 <= i <= m-1）是实数> 0; betam是实数> = 0; eta1是-2 <= ETA1 <= 2的实数，ETA2是实数 -2 <= ETA2 <= 2）;以alphaiT（1 <= i <= m）的持续时间内记录具有记录功率Pwi的记录光，并且以具有偏置功率Pbi的记录光在 betaiT（1 <= i <= m），偏置功率为Pbi = 1.25。

72. 发明授权

US06504665B1 Method and apparatus for magnetic recording 失效
标题翻译：磁记录方法和装置
公开(公告)号：US06504665B1
公开(公告)日：2003-01-07
申请号：US09424370
申请日：1999-11-23
申请人： Koichi Mukasa , Soshin Chikazumi , Eichi Hirota , Ryosho Nakane , Makoto Sawamura
发明人： Koichi Mukasa , Soshin Chikazumi , Eichi Hirota , Ryosho Nakane , Makoto Sawamura
IPC分类号： G11B502
CPC分类号： B82Y10/00 , G11B5/00 , G11B5/02 , G11B5/1278 , G11B5/64 , G11B5/74 , G11B5/855 , G11B9/1409 , G11B11/10508 , G11B11/10517 , G11B11/10528 , G11B11/10584 , G11C11/14 , G11C11/16 , G11C19/08
摘要： To provide a magnetic recording method and apparatus which utilize a spin vortex as a recording unit and which enables high density recording, spin vortices (2) are recorded on a recording medium (1) such that the spin vortices (2) are aligned to form a recording track (3). The recording medium (1) is formed of a magnetic super-thin film, and positive and negative recorded spin vortices (2) are aligned thereon.
摘要翻译：为了提供利用旋转涡流作为记录单元并且能够进行高密度记录的磁记录方法和装置，旋转旋涡（2）被记录在记录介质（1）上，使得旋转涡流（2）对齐以形成记录轨道（3）。记录介质（1）由磁性超薄膜形成，正和负记录旋转旋涡（2）对准。

73. 发明申请

US20020089899A1 Recording method and recording apparatus for magneto-optical recording medium 失效
标题翻译：磁光记录介质的记录方法和记录装置
公开(公告)号：US20020089899A1
公开(公告)日：2002-07-11
申请号：US10059192
申请日：2002-01-31
申请人： Hitachi Maxell, LTD.
发明人： Manabu Tani , Hiroyuki Awano , Masafumi Yoshihiro , Masaki Sekine
IPC分类号： G11B011/00
CPC分类号： G11B11/1053 , G11B11/10513 , G11B11/10515 , G11B11/10528
摘要： A bit of binary information which is one of the null1null and null0null is assigned to a domain pattern which is a combination of a recorded magnetic domain and a magnetic domain magnetized in the direction opposite to the direction in which the recording domain is magnetized. A bit of binary information which is the other of null1null and null0null is assigned to a domain pattern consisting of two magnetic domains magnetized in the same direction as the foregoing magnetic domain is magnetized. Consequently, two or more consecutive bits of record information are formed, on a recording layer, as a series of domain patterns each of which is a combination, as a record information unit, of a recorded magnetic domain and a magnetic domain magnetized in the direction opposite to the direction in which the recording domain is magnetized. Independent of the lengths of the magnetic domains recorded on the recording layer, the record information can be transferred to a reproducing layer. This makes it possible to reproduce high-density record information securely or reliably.
摘要翻译：将作为“1”和“0”之一的二进制信息的位分配给域图案，其是记录的磁畴和磁场与磁带的方向相反的方向的组合，磁化。将另一个“1”和“0”的二进制信息分配给由与上述磁畴磁化相同方向磁化的两个磁畴组成的域模式。因此，在记录层上形成记录信息的两个或更多个连续位作为一系列域模式，每个区域模式是作为记录信息单元的记录磁畴和沿该方向磁化的磁畴的记录信息单元的组合与记录域被磁化的方向相反。独立于记录在记录层上的磁畴的长度，记录信息可被传送到再现层。这使得可以安全或可靠地再现高密度记录信息。

74. 发明申请

US20020001275A1 Information recording method and information recording apparatus therefor 失效
公开(公告)号：US20020001275A1
公开(公告)日：2002-01-03
申请号：US09774155
申请日：2001-01-30
申请人： FUJITSU LIMITED
发明人： Tsutomu Tanaka , Masakazu Taguchi , Takuya Kamimura
IPC分类号： G11B007/0045 , G11B007/125
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/00454 , G11B11/10528 , G11B11/1053 , G11B11/10595
摘要： An information recording method and an apparatus therefor, wherein a recording compensation controlling unit 1 receives data to be recorded and determines whether a pulse timing adjustment is to be performed or not, and instructs an APC 3 to adjust the timing thereby to advance the pulse start timing of laser light and/or to delay the pulse termination timing when the pulse timing adjustment is to be performed. The recording compensation controlling unit 1 determines the pulse timing adjustment corresponding to the presence or absence of a predetermined nullspace, record marknull, whereby the positional shift quantity of leading and trailing edges is reduced even for the marks having a fine dimension, and the jitter is reduced.

75. 发明授权

US06192017B1 Method and apparatus for reducing the width of marks written in optical media 有权
标题翻译：用于减小写在光学介质中的标记的宽度的方法和装置
公开(公告)号：US06192017B1
公开(公告)日：2001-02-20
申请号：US09404223
申请日：1999-09-23
申请人： Nob Kimura , Daniel Wu
发明人： Nob Kimura , Daniel Wu
IPC分类号： G11B700
CPC分类号： G11B7/24085 , G11B7/0045 , G11B11/10506 , G11B11/10528 , G11B11/1053 , G11B20/10194 , G11B20/1426
摘要： The present invention includes a method and apparatus for reducing the width of a mark written in optical media. When forming a long mark, the prior art recording methods typically cause blooming at the edges of the mark, resulting in a wide mark pattern which may be sensed by the read focused spot reading an adjacent track causing increased adjacent track crosstalk (ATC). However, by removing every other pulse from the write pulse waveform, the cooling sequence of the writing process is sufficiently increased to allow for additional cooling between pulses. When forming marks with less pulses, the effects of blooming are substantially reduced. Thus, because of the reduction in the effect of blooming, the problems associated with ATC, whereby adjacent track information is recorded, is substantially reduced.
摘要翻译：本发明包括一种用于减小写在光学介质中的标记的宽度的方法和装置。当形成长标记时，现有技术的记录方法通常在标记的边缘引起起晕，导致可以通过读取聚焦点读取相邻轨道感测到的较宽的标记图案，导致增加的相邻轨道串扰（ATC）。然而，通过从写入脉冲波形中去除每隔一个脉冲，写入过程的冷却顺序被充分地增加以允许脉冲之间的附加冷却。当以更少的脉冲形成标记时，起霜的效果显着降低。因此，由于降低了起霜的效果，因此与ATC相关联的相关问题相关的问题大大减少。

76. 发明授权

US6144631A Information recording medium, and readout method and readout apparatus therefor 失效
标题翻译：信息记录介质，读出方法和读出装置
公开(公告)号：US6144631A
公开(公告)日：2000-11-07
申请号：US300453
申请日：1999-04-28
申请人： Toshifumi Kawano
发明人： Toshifumi Kawano
IPC分类号： G11B5/012 , G11B5/596 , G11B7/007 , G11B7/013 , G11B7/12 , G11B7/24 , G11B7/24085 , G11B7/252 , G11B11/105 , G11B13/04
CPC分类号： G11B7/24085 , G11B11/10528 , G11B11/10584 , G11B13/045 , G11B5/012 , G11B5/59677 , G11B7/007 , G11B7/122 , G11B7/24 , G11B7/252 , G11B7/00718
摘要： An information recording medium comprising a substrate provided with recessed pits or grooves, and at least a metal layer and a light transmitting layer formed on the substrate in this order, or a metal substrate provided with recessed pits or grooves, and a light transmitting layer formed on the metal substrate, so that a light is applied from the light transmitting layer side to readout information from the pits or grooves, wherein the minimum width W of the pits or grooves and the wavelength .lambda. in air of the readout light satisfy:W/.lambda..ltoreq.0.6 (1)and the refractive index n of the light transmitting layer, the thickness Tf of the light transmitting layer and the maximum depth d of the pits or grooves satisfy:n.gtoreq.1.6 (2)1.2d/n
摘要翻译：一种信息记录介质，包括设置有凹坑或凹槽的基板，以及至少形成在基板上的金属层和透光层，或者设置有凹坑或凹槽的金属基板，以及形成的透光层在金属基板上，使得从透光层一侧施加光从凹坑或凹槽读出信息，其中凹坑或凹槽的最小宽度W和读出光的空气中的波长λ满足W / λ<0.6（1）和透光层的折射率n，透光层的厚度Tf和凹坑或凹槽的最大深度d满足：n> = = 1.6（2）1.2d / n

77. 发明授权

US6027825A Magnetooptical recording medium on which high-density information can be recorded and method of reproducing the recorded information 失效
公开(公告)号：US6027825A
公开(公告)日：2000-02-22
申请号：US869921
申请日：1997-06-05
申请人： Tsutomu Shiratori , Tomoyuki Hiroki
发明人： Tsutomu Shiratori , Tomoyuki Hiroki
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/10582 , G11B11/10506 , G11B11/10508 , G11B11/10515 , G11B11/10528 , G11B11/10543 , G11B11/10584 , G11B11/10586 , G11B11/10504 , G11B11/10593 , Y10S428/90 , Y10T428/24942
摘要： A magnetooptical recording medium includes a first magnetic layer, a second magnetic layer whose Curie temperature is lower than that of the first magnetic layer, and a third magnetic layer, comprising a vertically-magnetizing film, whose Curie temperature is higher than that of the second magnetic layer. The first magnetic layer, the second magnetic layer and the third magnetic layer are in a state of exchange coupling with each other at a portion of a vertically-magnetizing film. A domain walls formed in the first magnetic layer moves when the temperature of the medium has been raised to at least the Curie temperature of the second magnetic layer.

78. 发明授权

US5896366A Optical recording medium having a plurality of recorded pits of different heights and depths 失效
标题翻译：具有不同高度和深度的多个记录凹坑的光学记录介质
公开(公告)号：US5896366A
公开(公告)日：1999-04-20
申请号：US800396
申请日：1997-02-14
申请人： Masatsugu Ogawa
发明人： Masatsugu Ogawa
IPC分类号： G11B7/005 , G11B7/007 , G11B7/013 , G11B7/24 , G11B11/10 , G11B11/105
CPC分类号： G11B7/005 , G11B11/10515 , G11B11/10528 , G11B11/10584 , G11B7/24 , G11B7/24088 , G11B7/24085
摘要： A method is provided for achieving high density in an optical playback medium, without relying on a reduction in size of a recorded feature. In this method, the optical playback medium has a substrate that has a substrate surface, a magnetic film formed on that substrate surface and having a magnetic film surface, and has a plurality of recording pits which are formed on either the substrate surface or on the magnetic film surface, these pits being depressions and protrusions.
摘要翻译：提供了一种用于在光学重放介质中实现高密度的方法，而不依赖于记录特征的尺寸的减小。在该方法中，光学重放介质具有基板表面，形成在该基板表面上并具有磁性膜表面的磁性膜，并且具有形成在基板表面上或在基板表面上的多个记录凹坑磁性膜表面，这些凹坑是凹陷和凸起。

79. 发明授权

US5726955A Magneto optical recording medium apparatus and method utilizing light pulse magnetic modulation recording 失效
标题翻译：磁光记录介质装置和方法利用光脉冲磁调制记录
公开(公告)号：US5726955A
公开(公告)日：1998-03-10
申请号：US744760
申请日：1996-11-06
申请人： Seiji Yonezawa , Norio Ohta , Toshio Niihara , Keiji Kataoka , Masahiko Takahashi , Harukazu Miyamoto , Hirofumi Sukeda , Toshiaki Tsuyoshi
发明人： Seiji Yonezawa , Norio Ohta , Toshio Niihara , Keiji Kataoka , Masahiko Takahashi , Harukazu Miyamoto , Hirofumi Sukeda , Toshiaki Tsuyoshi
IPC分类号： G11B20/10 , G11B5/02 , G11B7/006 , G11B7/007 , G11B11/10 , G11B11/105 , G11B27/19 , G11B27/30 , G11B11/00
CPC分类号： G11B7/00745 , G11B11/10513 , G11B11/10521 , G11B11/10528 , G11B11/1053 , G11B11/10595 , G11B27/19 , G11B27/3027 , G11B7/006
摘要： A magneto-optical data recording system comprises magnetic field pulse applying means for applying to a magneto-optic recording medium a magnetic field pulse of a polarity corresponding to code data to be recorded, and means for heating the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to be recorded. During recording, the magnetic field pulse applying means applies a magnetic field pulse of a polarity corresponding to code data along a track of the recording medium and the heating means continuously heats the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to thereby directly overwrite the code data. The magnetic field pulse applying means includes a magnetic coil driven by code data from a source of code data (data generator). The heating means includes an optical head which comprises a source of laser beam driven by a laser driver and an optical system which focuses the laser beam from the source of laser beam as a small light spot onto the recording medium.
摘要翻译：一种磁光数据记录系统，包括磁场脉冲施加装置，用于向磁光记录介质施加与要记录的代码数据相对应的极性的磁场脉冲，以及用于以脉动方式加热记录介质的装置，与要记录的代码数据同步的预定频率。在记录期间，磁场脉冲施加装置沿着记录介质的轨道施加与代码数据对应的极性的磁场脉冲，并且加热装置以与代码数据同步的预定频率的脉动方式连续地加热记录介质从而直接覆盖代码数据。磁场脉冲施加装置包括由代码数据源（数据发生器）的代码数据驱动的磁线圈。加热装置包括光学头，其包括由激光驱动器驱动的激光束源和将来自激光源的激光束作为小光点聚焦到记录介质上的光学系统。

80. 发明授权

US5483508A Optical recording and reproducing apparatus using a hologram to detect and judge a plurality of pit patterns 失效
标题翻译：使用全息图的光学记录和再现装置来检测和判断多个凹坑图案
公开(公告)号：US5483508A
公开(公告)日：1996-01-09
申请号：US163313
申请日：1993-12-08
申请人： Takahiro Miyake , Tetsuo Ueyama , Toshiyuki Tanaka , Yukio Kurata
发明人： Takahiro Miyake , Tetsuo Ueyama , Toshiyuki Tanaka , Yukio Kurata
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/007 , G11B7/013 , G11B7/135 , G11B7/14 , G11B7/24 , G11B11/10 , G11B11/105 , G11B7/09
CPC分类号： G11B11/10597 , G11B11/10504 , G11B11/10515 , G11B11/10528 , G11B11/10532 , G11B7/0045 , G11B7/005 , G11B7/1353 , G11B7/14 , G11B7/24085
摘要： An optical recording and reproducing apparatus records two rows of a plurality of pit patterns with respect to one track by modulating two light beams and by converging the modulated two light beams in parallel onto the track. The plurality of pit patterns are detected and judged by a multiple hologram on which reflected object waves of all kinds of pit patterns are recorded, thereby enabling to carry out recording of information. With the arrangement, since multiple values recording and reproducing can be carried out with respect to a magneto-optical disk, the recording capacity becomes greater than the conventional case and the reproduced signal having little crosstalk can be obtained according to the present way of reproducing.
摘要翻译：光学记录和再现装置通过调制两个光束并将经调制的两个光束平行地收敛到轨道上来记录相对于一个轨道的两行多个凹坑图案。通过多个全息图检测和判断多个凹坑图案，在该多个全息图上记录了各种凹坑图案的反射对象波，从而能够执行信息的记录。通过该结构，由于可以对磁光盘执行多个值记录和再现，所以记录容量变得比常规情况更大，并且可以根据当前的再现方式获得具有很小串扰的再现信号。

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