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41. 发明授权

US5353278A Magneto-optical disk and method of manufacturing the same 失效
标题翻译：磁光盘及其制造方法
公开(公告)号：US5353278A
公开(公告)日：1994-10-04
申请号：US694990
申请日：1991-05-02
申请人： Yoshiteru Murakami , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Hirotaka Toki
发明人： Yoshiteru Murakami , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Hirotaka Toki
IPC分类号： G11B11/105 , G11B23/00 , G11B5/54
CPC分类号： G11B23/0042 , G11B11/10582 , G11B11/10584
摘要： A magneto-optical disk comprising a substrate whereon a recording medium is formed, and a depression is formed on the substrate on the inside of the recording medium of the substrate. A center hub is installed on the depression such that the center hub is substantially level with a protective resin layer covering the recording medium. On the center hub, a flying head performs CSS (Contact Start and Stop). This configuration of the disk eliminates the occurrence of dust due to the abrasion and head crash, and achieves stable CSS. A method of manufacturing the magneto-optical disk, wherein the protective resin layer is formed after installing the center hub on the depression. In this method, since a space is not produced between the center hub and the protective resin layer, the stable flying characteristics is obtained. And a magneto-optical disk whereon small physical bumps and pits are formed on the substrate on the inside of the recording medium, which prevents the flying head from sticking to the disk. A method of manufacturing the magneto-optical disk by using a stamper, which permits the disk to be mass produced.
摘要翻译：一种磁光盘，包括形成记录介质的基板，并且在基板的记录介质的内侧上的基板上形成凹陷。中心毂安装在凹陷处，使得中心毂基本上与覆盖记录介质的保护树脂层水平。在中心枢纽上，飞头执行CSS（联系人启动和停止）。盘的这种配置消除了由于磨损和头部碰撞引起的灰尘的发生，并且实现了稳定的CSS。一种制造磁光盘的方法，其中在将中心毂安装在凹陷部之后形成保护树脂层。在该方法中，由于在中心轮毂和保护树脂层之间不产生空间，因此获得了稳定的飞行特性。另外，在记录介质的内侧的基板上形成小的物理凸点和凹坑的磁光盘，防止飞头粘附到盘上。通过使用压模来制造磁光盘的方法，该压模允许大量生产盘。

42. 发明授权

US5202860A Magneto-optic reproducing device using right and left circularly polarized light 失效
标题翻译：使用右侧和左侧圆形偏振光的磁光复制装置
公开(公告)号：US5202860A
公开(公告)日：1993-04-13
申请号：US664183
申请日：1991-03-04
申请人： Akira Takahashi , Yoshiteru Murakami , Junsaku Nakayima , Kenji Ohta
发明人： Akira Takahashi , Yoshiteru Murakami , Junsaku Nakayima , Kenji Ohta
IPC分类号： G11B11/105
CPC分类号： G11B11/10545
摘要： A reproducing optical device for a magneto-optical recording medium related to the present invention having light sources that emit linearly polarized lights towards a magneto-optical recording medium, polarization directions of the linearly polarized lights being mutually orthogonal. A quarter wavelength plate disposed between the recording medium and the light sources converts each of the linearly polarized lights into right and left circularly polarized lights respectively. Corresponding to recorded information, the recording medium has magnetized sections that are magnetized in a perpendicularly upward and downward direction with respect to a medium surface. Moreover, the recording medium displays the property of circular dichroism. When the right circularly polarized light and the left circularly polarized light are reflected off the recording medium, a first and a second photodetector generate a first and a second reproduced signal respectively, based on variation in reflected light intensity of each of the circularly polarized lights. This variation corresponds to the upward and the downward magnetization directions of the magnetized sections and is due to the circular dichroism effect. There is a phase difference of half a cycle between the first and the second reproduced signal and the signals vary inversely with respect to each other. Consequently, disk noise is cancelled by differentially amplifying the first and the second reproduced signal, and an SN ratio of a reproduced signal thereby can be improved.

43. 发明授权

US5081614A Magneto-optical head utilizing central and peripheral portions of reflected light flux for different purposes 失效
标题翻译：用于不同目的的反射光通量的中心和外围部分的磁光头
公开(公告)号：US5081614A
公开(公告)日：1992-01-14
申请号：US577817
申请日：1990-09-04
申请人： Akira Takahashi , Toshihisa DeGuchi , Yoshiteru Murakami , Michinobu Mieda , Kazuo Van , Kenji Ohta , Hiroyuki Katayama , Tomoyuki Miyake
发明人： Akira Takahashi , Toshihisa DeGuchi , Yoshiteru Murakami , Michinobu Mieda , Kazuo Van , Kenji Ohta , Hiroyuki Katayama , Tomoyuki Miyake
IPC分类号： G11B7/12 , G11B7/135 , G11B11/105
CPC分类号： G11B11/10532 , G11B7/12 , G11B7/1381
摘要： A magneto-optical head wherein a light flux, which is reflected from a recording medium, is separated into its central portion and remaining portion. The central light flux portion is only used as a magneto-optical signal while the remaining light flux portion is only used as an optical servo signal.
摘要翻译：一种磁光头，其中从记录介质反射的光束被分离成其中心部分和剩余部分。中央光束部分仅用作磁光信号，而剩余光通量部分仅用作光伺服信号。

44. 发明授权

US5066381A Target unit 失效
标题翻译：目标单位
公开(公告)号：US5066381A
公开(公告)日：1991-11-19
申请号：US602382
申请日：1990-10-24
申请人： Kenji Ohta , Yoshiteru Murakami , Nobuyuki Takamori , Kenichi Hijikata , Takyuki Shingyoji , Kazushige Takaishi
发明人： Kenji Ohta , Yoshiteru Murakami , Nobuyuki Takamori , Kenichi Hijikata , Takyuki Shingyoji , Kazushige Takaishi
IPC分类号： C23C14/34
CPC分类号： C23C14/3407
摘要： A target unit includes a backing plate and a target member disposed on the backing plate. The target member includes at least one erosion member of a sputtering material and at least one holding member for releasably holding the erosion member on the backing plate.
摘要翻译：目标单元包括背板和设置在背板上的目标构件。目标构件包括溅射材料的至少一个侵蚀构件和用于将侵蚀构件可释放地保持在背板上的至少一个保持构件。

45. 发明授权

US5058099A Magneto-optical memory element 失效
标题翻译：磁光记忆元件
公开(公告)号：US5058099A
公开(公告)日：1991-10-15
申请号：US391249
申请日：1989-08-09
申请人： Yoshiteru Murakami , Akira Takahashi , Kazuo Van , Junichiro Nakayama , Hiroyuki Katayama , Kouji Ohta
发明人： Yoshiteru Murakami , Akira Takahashi , Kazuo Van , Junichiro Nakayama , Hiroyuki Katayama , Kouji Ohta
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10584 , G11B11/10586
摘要： A magneto-optical memory element has a multi-layer construction in the order from a side first receiving light from a light-source which includes a first transparent dielectric film, a rare earth transition metal alloy film, a second transparent dielectric film and a reflective film. The magneto-optical device uses circular dichroism effect of a magnetic mater for reading information. The rare earth transition metal alloy film has a refractive index represented by n.+-..DELTA.n wherein n=3.2-3.55i and .DELTA.n=0.05-0.03i. The thickness of film is about 18 to 46 nm. The second transparent dielectric film has a refractive index of 2.0.+-.0.2 and a film thickness of 80 to 108 nm.

46. 发明授权

US4985885A Optical memory device 失效
标题翻译：光存储设备
公开(公告)号：US4985885A
公开(公告)日：1991-01-15
申请号：US213817
申请日：1988-06-30
申请人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirokane , Yoshiteru Murakami
发明人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirokane , Yoshiteru Murakami
IPC分类号： G11B11/105 , G11B19/12 , G11B19/20
CPC分类号： G11B19/12 , G11B11/10584 , G11B11/10586 , G11B19/20
摘要： An optical memory device comprising a first light-permeable substrate, a second light-permeable substrate and a plurality of strip-shaped optical recording layers that are disposed with a gap between the first substrate and the second substrate, wherein the optical path length from the outer surface of the first substrate to the recording layers is approximately equal to the optical path length from the outer surface of the second surface to the recording layers.

47. 发明授权

US4818648A Optical memory element 失效
标题翻译：光学存储元件
公开(公告)号：US4818648A
公开(公告)日：1989-04-04
申请号：US934718
申请日：1986-11-25
申请人： Kenji Ohta , Akira Takahashi , Tetsuya Inui , Hiroyuki Katayama , Junji Hirokane , Yoshiteru Murakami
发明人： Kenji Ohta , Akira Takahashi , Tetsuya Inui , Hiroyuki Katayama , Junji Hirokane , Yoshiteru Murakami
IPC分类号： G11B11/10 , C03C3/076 , C03C3/083 , C03C3/091 , C03C4/00 , C03C15/00 , G11B7/24 , G11B7/253 , G11B7/26 , G11B11/105 , G03C5/16 , G01D9/00 , G11B3/70
CPC分类号： G11B7/24 , C03C3/076 , C03C3/083 , C03C3/091 , G11B7/2531 , G11B7/261 , G11B2007/24304 , G11B7/2533 , Y10T428/24479 , Y10T428/2457
摘要： An optical memory element comprising a substrate with grooves functioning as grooves for, for example, controlling the position of a laser beam, wherein said substrate is composed of a glass containing SiO.sub.2 in the range of 51 to 71% by weight, Na.sub.2 O in the range of 10 to 18% by weight, K.sub.2 O in the range of 0 to 8% by weight, Al.sub.2 O.sub.3 in the range of 12 to 22% by weight, and B.sub.2 O.sub.3 in the range of 0 to 9% by weight.
摘要翻译：一种光学存储元件，包括具有用作例如控制激光束位置的凹槽的衬底，其中所述衬底由含有51至71重量％的SiO 2的玻璃组成，在该范围内的Na 2 O在该范围内为10〜18重量％，K 2 O为0〜8重量％，Al 2 O 3为12〜22重量％，B 2 O 3为0〜9重量％。

48. 发明授权

US4740947A Dual surface optical memory disc 失效
标题翻译：双面光学记忆盘
公开(公告)号：US4740947A
公开(公告)日：1988-04-26
申请号：US61034
申请日：1987-06-12
申请人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirogane , Yoshiteru Murakami
发明人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirogane , Yoshiteru Murakami
IPC分类号： B29C65/48 , G11B7/24 , G11B11/105
CPC分类号： G11B11/10586 , B29C65/1406 , B29C65/4845 , B29C65/4875 , B29C66/452 , B29C66/73366 , G11B7/24015 , G11B7/24024 , B29C65/4885 , B29C65/7826 , B29C66/8322 , B29L2017/005
摘要： A first optical memory disc and a second optical memory disc are fixed to each other by an adhesive layer so as to form a dual-surface optical memory disc. In a manufacturing step, an adhesive, preferably pre-cured photo-polymer mixed with spherical spacer elements, is painted on either one of or both of the first and second optical memory discs. When a predetermined pressure is applied between the two optical memory discs, the thickness of the adhesive layer is fixed by the diameter of the spherical spacer elements. While the pressure is applied between the two optical memory discs, ultraviolet rays are applied to the adhesive layer through one of the first or second optical memory discs so as to cure the photo-polymer, thereby tightly joining the first and second optical memory discs to each other.
摘要翻译：第一光存储盘和第二光存储盘通过粘合剂层彼此固定，以形成双表面光存储盘。在制造步骤中，将粘合剂，优选与球形间隔元件混合的预固化光聚合物涂覆在第一和第二光学存储盘的一个或两个上。当在两个光学存储盘之间施加预定的压力时，粘合剂层的厚度由球形间隔元件的直径固定。当在两个光学存储盘之间施加压力时，通过第一或第二光学存储盘中的一个将紫外线施加到粘合剂层，以便固化光聚合物，从而将第一和第二光学存储盘紧密连接到彼此。

49. 发明申请

US20120257299A1 MAGNETIC RECORDING/REPRODUCING APPARATUS AND METHOD FOR DETERMINING MAGNETIC RECORDING CONDITION 有权
标题翻译：用于确定磁记录条件的磁记录/再现装置和方法
公开(公告)号：US20120257299A1
公开(公告)日：2012-10-11
申请号：US13360332
申请日：2012-01-27
申请人： Ikuo Nakano , Yoshiteru Murakami , Shigemi Maeda
发明人： Ikuo Nakano , Yoshiteru Murakami , Shigemi Maeda
IPC分类号： G11B21/02
CPC分类号： G11B5/02 , G11B11/10536 , G11B2005/001 , G11B2005/0021
摘要： A magnetic recording/reproducing apparatus 100 includes: a magnetic head 1; a magnetic recording medium 2; a spindle 3 and a spindle motor 4; a suspension arm 5; a voice coil motor 6; and a control unit 7. The control unit 7 has: a motor driver 8; a head amplifier 9; a read/write channel 10; a laser driver 11; and a controller 12. The controller 12 has: a preliminary recording unit 13; a judgment unit 14; an extraction unit 15; a drive condition determining unit 16; and a preliminary recording terminating unit 17. Based on a reproduction signal evaluation value obtained using these units and a predetermined reference value, a drive condition is determined which is suitable for recording onto the magnetic recording medium 2.
摘要翻译：磁记录/再现装置100包括：磁头1; 磁记录介质2; 主轴3和主轴电动机4; 悬架臂5; 音圈电机6; 和控制单元7.控制单元7具有：马达驱动器8; 头放大器9; 读/写通道10; 激光驱动器11; 和控制器12.控制器12具有：初步记录单元13; 判断单元14; 提取单元15; 驱动条件确定单元16; 和预备记录终止单元17.基于使用这些单元获得的再现信号评估值和预定参考值，确定适合于记录在磁记录介质2上的驱动条件。

50. 发明授权

US08233359B2 Magnetic recording medium, magnetic recording/reproducing apparatus, and magnetic recording/reproducing method 有权
标题翻译：磁记录介质，磁记录/再现装置和磁记录/再现方法
公开(公告)号：US08233359B2
公开(公告)日：2012-07-31
申请号：US12513110
申请日：2007-07-17
申请人： Noboru Iwata , Yoshiteru Murakami
发明人： Noboru Iwata , Yoshiteru Murakami
IPC分类号： G11B11/00
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/012 , G11B5/743 , G11B7/1387 , G11B11/10536 , G11B11/10584
摘要： A magnetic recording medium (1a) includes: a plurality of magnetic dots (13), provided on a substrate (11), in each of which information is stored by heating of the magnetic body; and separator layers (50). Each of the separator layers (50) is structured such that a metallic body layer (52) and two dielectric body layers (51) are alternately stacked in an in-plane direction of the substrate (11). Each of the separator layers (50) separates two magnetic dots from each other in the in-plane direction. Both sides of each of the magnetic dots (13) in the in-plane direction of the substrate (11) have contact with two dielectric body layers (52), respectively. This provides a magnetic recording medium (1a) whose magnetic dots (13) can be entirely heated with a reduction in the amount of power that is consumed by a recording head.
摘要翻译：磁记录介质（1a）包括：设置在基板（11）上的多个磁点（13），每个磁点通过加热磁体而存储信息; 和隔离层（50）。每个分隔层（50）被构造成使得金属体层（52）和两个介电体层（51）在基板（11）的面内方向上交替堆叠。每个分隔层（50）在面内方向上分离两个磁性点。在基板（11）的面内方向上的每个磁性点（13）的两侧分别与两个介电体层（52）接触。这提供了一种磁记录介质（1a），其磁点（13）可以被完全加热，同时减少了由记录头消耗的功率量。

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