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1. 发明授权

US5654058A Magneto-optical disk 失效
标题翻译：磁光盘
公开(公告)号：US5654058A
公开(公告)日：1997-08-05
申请号：US310006
申请日：1994-09-21
申请人： Fumiyoshi Kirino , Harukazu Miyamoto , Shigenori Okamine , Noriyuki Ogihara , Masahiko Takahashi , Norio Ohta , Toshio Niihara
发明人： Fumiyoshi Kirino , Harukazu Miyamoto , Shigenori Okamine , Noriyuki Ogihara , Masahiko Takahashi , Norio Ohta , Toshio Niihara
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/1053 , G11B11/10586 , G11B11/10589 , G11B11/10591 , G11B11/10593 , G11B11/10508 , G11B11/10519 , Y10S428/90
摘要： In a magneto-optical disk for recording, reproduction or erasing with a laser beam, which comprises a film of four-layer structure consisting of a first dielectric layer, a magneto-optical recording layer, a second dielectric layer and a metallic layer, laid on a disk substrate provided with guide tracks, temperature distribution of the magneto-optical recording layer is controlled by controlling the thermal diffusivity of the metallic layer, and recording/reproduction/erasing repetition characteristics are improved thereby. In the disk of the present structure, the temperature is elevated in a broader area from the center of laser beam, and thus a thoroughly broad erasing domain width taking a track offset into account can be obtained and no recording domains remain after the erasing. The reproduced signal output is increased by 4 dB, as compared with that obtained by a disk of three-layer structure without any metallic layer, because the beam utilization efficiency is increased owing to both Kerr effect and Faraday effect. When the disk of the present structure is subjected to field modulation recording, tails of arrow-feather-shaped recording domains peculiar to the field modulation recording can be shortened and interbit interferences can be overcome, resulting in an increase in C/N (S/N) ratio and the high density recording can be made.
摘要翻译：在用于用激光束记录，再现或擦除的磁光盘中，其包括由第一介电层，磁光记录层，第二电介质层和金属层组成的四层结构的膜，铺设在设置有导轨的盘基板上，通过控制金属层的热扩散率来控制磁光记录层的温度分布，从而提高记录/再现/擦除重复特性。在本结构的盘中，从激光束的中心向较高的区域升温，从而可以获得考虑到磁道偏移的完全宽的擦除域宽度，并且在擦除之后不会留下记录域。与没有任何金属层的三层结构的盘相比，再现信号输出增加了4dB，因为由于克尔效应和法拉第效应都增加了光束利用效率。当本结构的磁盘进行现场调制记录时，可以缩短磁场调制记录特有的箭头 - 羽状记录区的尾部，并克服间断干扰，导致C / N（S / N）比，并且可以进行高密度记录。

2. 发明授权

US5270987A Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor 失效
标题翻译：磁光记录和再现方法，磁光存储装置及其磁光记录介质
公开(公告)号：US5270987A
公开(公告)日：1993-12-14
申请号：US509743
申请日：1990-04-17
申请人： Toshimitsu Kaku , Shigeru Nakamura , Masahiko Takahashi , Toshio Niihara , Harukazu Miyamoto , Norio Ohta , Takeshi Nakao , Hirofumi Sukeda , Masahiro Ojima , Takashi Toyooka , Tsuneo Suganuma , Fumiyoshi Kirino , Yoshinori Miyamura
发明人： Toshimitsu Kaku , Shigeru Nakamura , Masahiko Takahashi , Toshio Niihara , Harukazu Miyamoto , Norio Ohta , Takeshi Nakao , Hirofumi Sukeda , Masahiro Ojima , Takashi Toyooka , Tsuneo Suganuma , Fumiyoshi Kirino , Yoshinori Miyamura
IPC分类号： G11B11/105 , G11B11/00
CPC分类号： G11B11/10584 , G11B11/10536 , G11B11/10545 , G11B11/10552 , G11B11/10558 , G11B11/10593 , G11B11/10571
摘要： A magnetic field of a polarity corresponding to information to be recorded is applied while a recording spot having a high energy is irradiated to a magneto-optical recording medium to record domains representing the information along a track. The recorded domains are read out by a reproducing spot having a lower energy than the recording spot and a high resolution power along the track. A recording head has an optical system for irradiating the recording spot having the high energy to the magneto-optical recording medium and a magnetic head for applying a magnetic field having a polarity thereof switched in accordance with the information to be recorded, to an irradiation area of the recording spot, a reproducing head has an optical system for irradiating the reproducing spot having the low energy by a laser beam having a wavelength of no larger than 600 nm and a magneto-optical signal detector for detecting a displacement of a polarization plane of a reflected light of the reproducing spot to read out the recording domains. The magneto-optical recording medium is made of a recording film having a multi-layer structure of alternate lamination of metal layers and dielectric layers.
摘要翻译：将具有高能量的记录点照射到磁光记录介质上，记录与记录信息对应的极性的磁场，记录表示信息沿着轨迹的域。记录的区域由具有比记录点更低的能量的再现点和沿着轨道的高分辨率电力读出。记录头具有用于向磁光记录介质照射具有高能量的记录点的光学系统和用于根据要记录的信息将其极性切换的磁场施加到照射区域的记录点，再现头具有用于通过具有不大于600nm的波长的激光束照射具有低能量的再现点的光学系统和用于检测偏振面的位移的磁光信号检测器再现点的反射光读出记录区域。磁光记录介质由具有金属层和电介质层的交替叠层的多层结构的记录膜制成。

3. 发明授权

US5914198A Magneto-optical recording medium having dielectric layers with different indices of refraction 失效
$Magneto-optical recording medium having dielectric layers with different indices of refraction$
标题翻译：具有不同折射率的电介质层的磁光记录介质
公开(公告)号：US5914198A
公开(公告)日：1999-06-22
申请号：US831262
申请日：1997-04-07
申请人： Harukazu Miyamoto , Toshio Niihara , Norio Ohta , Fumiyoshi Kirino
发明人： Harukazu Miyamoto , Toshio Niihara , Norio Ohta , Fumiyoshi Kirino
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/10593 , G11B11/10584 , Y10S428/90
摘要： In a magneto-optical recording medium which comprises a transparent substrate, a first dielectric film, a magnetic film, a second dielectric film and a metal reflective film, formed successively one upon another, Kerr rotation angle can be increased without lowering the reflectivity by setting the thickness of the first dielectric film to 120-220% of a minimum film thickness among film thicknesses showing a minimum reflectivity and setting the thickness of the second dielectric film to 80-120% of a film thickness showing a maximum Kerr rotation angle and furthermore by making the refractive index of the first dielectric film lower than that of the second dielectric film.
摘要翻译：在包括透明基板的磁光记录介质中，可以相互依次形成的第一电介质膜，磁膜，第二电介质膜和金属反射膜，可以增加克尔旋转角度，而不会通过设定降低反射率第一电介质膜的厚度为薄膜厚度的最小膜厚的120-220％，表示最小的反射率，并将第二电介质膜的厚度设定为显示最大克尔旋转角度的膜厚度的80-120％通过使第一电介质膜的折射率低于第二电介质膜的折射率。

4. 发明授权

US5321672A Method of an apparatus for magneto-optically recording information by changing the position or shape or controlling the diameter of reversed domains 失效
标题翻译：用于通过改变位置或形状或控制反向域的直径来磁信息记录信息的装置的方法
公开(公告)号：US5321672A
公开(公告)日：1994-06-14
申请号：US509754
申请日：1990-04-17
申请人： Harukazu Miyamoto , Yoshio Suzuki , Toshio Niihara , Norio Ohta , Masahiko Takahashi , Fumiyoshi Kirino , Yumiko Anzai
发明人： Harukazu Miyamoto , Yoshio Suzuki , Toshio Niihara , Norio Ohta , Masahiko Takahashi , Fumiyoshi Kirino , Yumiko Anzai
IPC分类号： G11B11/105 , G11B13/04
CPC分类号： G11B11/10528 , G11B11/10504 , G11B11/10517
摘要： A magneto-optical recording device for radiating a laser beam according to recording information onto a magneto-optical recording medium having an easy axis of magnetization in a direction perpendicular to a film face of the recording medium itself to form a reversed domain and record information, which forms a reversed domain by radiating a laser beam and moves the position of the reversed domain to record information. In an embodiment of the present invention, it becomes possible to over-write new information without erasing beforehand information already recorded by only controlling the intensity, pulse width, radiation position and radiation time of the laser beam without providing a special bias magnetic field for reversing the magnetic field.
摘要翻译：一种磁光记录装置，用于根据记录信息将激光束照射到具有易磁化轴的磁光记录介质上，该光磁记录介质在与记录介质本身的膜面垂直的方向上形成反向畴并记录信息，其通过辐射激光束并且将反向域的位置移动以记录信息而形成反向域。在本发明的一个实施例中，可以不预先擦除已经通过仅控制激光束的强度，脉冲宽度，辐射位置和辐射时间的信号的新信息而不提供用于反转的特殊偏置磁场磁场。

5. 发明授权

US5959943A Information recording medium with clock information therein 失效
标题翻译：具有时钟信息的信息记录介质
公开(公告)号：US5959943A
公开(公告)日：1999-09-28
申请号：US932056
申请日：1997-09-17
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。

6. 发明授权

US06200673B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06200673B1
公开(公告)日：2001-03-13
申请号：US07607870
申请日：1990-11-01
申请人： Harukazu Miyamoto , Toshio Niihara , Motoyasu Terao , Norio Ohta , Masaaki Kurebayashi
发明人： Harukazu Miyamoto , Toshio Niihara , Motoyasu Terao , Norio Ohta , Masaaki Kurebayashi
IPC分类号： G11B566
CPC分类号： G11B11/10523 , G11B11/10506 , G11B11/10515 , G11B11/10519 , G11B11/10586 , Y10T428/265
摘要： A magneto-optical recording medium having a substrate and a magnetic layer composed of at least a recording layer and a supporting layer and being capable of retrieving information by utilizing the fact that when it is irradiated with a laser beam it produces the magneto-optical effect which affects its reflected light, characterized in that the recording layer has a lower Curie temperature than has the supporting layer and recording layer is thin enough for the laser beam to pass through. A magneto-optical recording medium as defined above, wherein the supporting layer is composed of a first supporting layer and a second supporting layer, and the recording layer, the first supporting layer, and the second supporting layer have Curie temperatures of T1, T2, and T3, respectively, which satisfy the following relationship. T1
摘要翻译：一种磁光记录介质，具有基板和由至少记录层和支撑层构成的磁性层，并且能够通过利用这样的事实来检索信息，即当用激光束照射时产生磁光效应其影响其反射光，其特征在于记录层具有比支撑层低的居里温度，并且记录层足够薄以使激光束通过。1.如上所述的磁光记录介质，其中支撑层由第一支撑层和第二支撑层组成，并且记录层，第一支撑层和第二支撑层分别具有满足以下关系的T1，T2和T3的居里温度。光记录介质，其中记录层具有比具有支撑层的更高的居里温度。由于上述特征，本发明的磁光记录介质能够重写并具有改进的记录灵敏度。

7. 发明授权

US5886958A Information recording apparatus and method for modulated magneto-optical recording medium 失效
标题翻译：用于调制磁光记录介质的信息记录装置和方法
公开(公告)号：US5886958A
公开(公告)日：1999-03-23
申请号：US932055
申请日：1997-09-17
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。

8. 发明授权

US5579292A Magneto-optical data recording apparatus using a sample-servo system for applying heating pulses to record data 失效
标题翻译：磁光数据记录装置，使用采样伺服系统来施加加热脉冲以记录数据
公开(公告)号：US5579292A
公开(公告)日：1996-11-26
申请号：US429008
申请日：1995-04-26
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 apparatus for applying to a magneto-optic recording medium a magnetic field pulse of a polarity corresponding to code data to be recorded, and apparatus 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 apparatus applies a magnetic field pulse of a polarity corresponding to code data along a track of the recording medium and the heating apparatus 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 apparatus includes a magnetic coil driven by code data from a source of code data (data generator). The heating apparatus 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。

9. 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。

10. 发明授权

US5179546A Magneto-optical disk and process for manufacturing the same 失效
标题翻译：磁光盘及其制造方法
公开(公告)号：US5179546A
公开(公告)日：1993-01-12
申请号：US631984
申请日：1990-12-21
申请人： Yumiko Anzai , Yoshinori Miyamura , Toshio Niihara , Harukazu Miyamoto , Norio Ohta
发明人： Yumiko Anzai , Yoshinori Miyamura , Toshio Niihara , Harukazu Miyamoto , Norio Ohta
IPC分类号： G11B11/10 , G11B7/26 , G11B11/105
CPC分类号： G11B11/10584 , G11B11/10582 , G11B7/26
摘要： A magneto-optical disk which has a circular disk form and comprises a substrate provided with information pits and a guide groove, a recording medium layer provided on the substrate, and a protective layer formed of at least one thin film on the medium layer, in which the surface of the protective layer is minutely roughened to have a concave rough pattern and not to substantially protrude beyond a reference level composed of the outermost surface portions of the protective layer. When the magneto-optical disk is subjected to recording by a CSS system using an air floating magnetic head conforming to high-frequency recording in a magnetic field modulation type recording, which is one of methods of overwrite recording on magneto-optical disks, the minute concave rough pattern formed on the surface of the disk substrate prevents such troubles as adhesion of the magnetic head to the surface of the disk and collision between the disk substrate being rotated and the head.
摘要翻译：一种具有圆盘形状并包括设置有信息凹坑的衬底和引导槽的磁光盘，设置在衬底上的记录介质层和由介质层上的至少一层薄膜形成的保护层，其保护层的表面被微小地粗糙化以具有凹形粗糙图案，并且基本上不突出超过由保护层的最外表面部分组成的基准水平。当磁光盘通过使用在磁光调制型记录中的符合高频记录的空气浮动磁头的CSS系统进行记录时，其是在磁光盘上重写记录的方法之一，分钟形成在盘基板表面上的凹形粗糙图案防止了磁头粘附到盘表面和盘基片旋转与头部之间的碰撞等问题。

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