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公开(公告)号：US06456586B1
公开(公告)日：2002-09-24
申请号：US09392248
申请日：1999-09-09
IPC分类号： G11B1110
CPC分类号： G11B11/10584 , G11B11/10586 , G11B11/10589
摘要： A magneto-optical recording medium comprising a reproducing magnetic layer having a magnetic layer which is in an in-plane magnetization state at room temperature but shifts to a perpendicular magnetization state as temperature rises, a dielectric layer and a recording magnetic layer having a magnetic layer which exhibits a perpendicular magnetization, sequentially from a photo-receptive side, the recording medium being further comprising a metal layer between the reproducing magnetic layer and the dielectric layer.
摘要翻译： 一种磁光记录介质，包括具有磁性层的再现磁性层，所述磁性层在室温下处于平面内的磁化状态，但随着温度升高而转变为垂直磁化状态，介电层和具有磁性层的记录磁性层 其从光接收侧顺序地显示垂直磁化，所述记录介质还包括在再现磁性层和介电层之间的金属层。
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72.发明授权Optical recording and reproducing method optical recording and reproducing device, and optical recording medium 失效光学记录和再现方法光学记录和再现装置，以及光学记录介质公开(公告)号：US06298018B1
公开(公告)日：2001-10-02
申请号：US09264416
申请日：1999-03-08
申请人： Akira Takahashi , Yoshiteru Murakami , Naoyasu Iketani , Ippei Suzuki , Go Mori , Shinya Hirata
发明人： Akira Takahashi , Yoshiteru Murakami , Naoyasu Iketani , Ippei Suzuki , Go Mori , Shinya Hirata
IPC分类号： G11B712
CPC分类号： B82Y10/00 , G11B7/122 , G11B7/1374 , G11B7/1387 , G11B7/24 , G11B11/10532 , G11B11/10554 , G11B11/1058 , G11B11/10584 , G11B2007/13727
摘要： An optical disk is provided with a recording layer, and with an optical coupling layer on a light-incident side of the recording layer. An optical recording and reproducing device and method include an objective lens and a hemispherical lens, which converge a light beam from a light source and project the light beam onto the optical disk. The hemispherical lens is provided in close proximity to the optical coupling layer, in a position such that an interval therebetween is not more than the wavelength of the light produced by the light source. The light beam converged by the objective lens and the hemispherical lens is coupled with the optical coupling layer while substantially maintaining a direction of propagation in which it was propagating while inside the hemispherical lens.
摘要翻译： 光盘设有记录层，并在记录层的光入射侧具有光耦合层。 光学记录和再现装置和方法包括物镜和半球形透镜，其将来自光源的光束会聚并将光束投射到光盘上。 半球形透镜设置在光耦合层的附近，使得它们之间的间隔不大于由光源产生的光的波长。 由物镜会聚的光束和半球透镜与光耦合层耦合，同时在半球形透镜的内部基本上保持传播方向传播。
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73.发明授权Method of reproducing information on a magneto-optical recording medium for achieving super resolution reproduction of high resolution recorded information 有权在用于实现高分辨率记录信息的超分辨率再现的磁光记录介质上再现信息的方法公开(公告)号：US06463015B1
公开(公告)日：2002-10-08
申请号：US09633914
申请日：2000-08-08
IPC分类号： G11B724
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10586
摘要： A magneto-optical recording medium of the present invention has a recording layer made of a perpendicular magnetization film, and a readout layer which is in an in-plane magnetization state at room temperature and changes into a perpendicular magnetization state with a rise in temperature. When the magneto-optical recording medium is irradiated with a light beam, the readout layer separates into three regions: a region in an in-plane magnetization state, a region in a perpendicular magnetization state, and a region having a temperature not lower than the Curie temperature thereof. Only the region in the perpendicular magnetization state allows copying of the magnetization of the recording layer. Therefore, even when the diameter and intervals of recording bits on the recording layer are very small, it is possible to reproduce a target recording bit separately from a recording bit adjacent to the target recording bit.
摘要翻译： 本发明的磁光记录介质具有由垂直磁化膜构成的记录层和在室温下处于面内磁化状态的读出层，随温度升高而变为垂直磁化状态。 当磁光记录介质被光束照射时，读出层分为三个区域：面内磁化状态的区域，垂直磁化状态的区域和温度不低于 居里温度。 只有垂直磁化状态的区域才允许复制记录层的磁化。 因此，即使当记录层上的记录位的直径和间隔非常小时，也可以与目标记录位相邻的记录位分开再现目标记录位。
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74.发明授权Magneto-optical recording medium for achieving super resolution reproduction of high resolution recorded information 有权用于实现高分辨率记录信息的超分辨率再现的磁光记录介质公开(公告)号：US06178143B1
公开(公告)日：2001-01-23
申请号：US09258180
申请日：1999-02-25
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10586
摘要： A magneto-optical recording medium has a recording layer made of a perpendicular magnetization film, and a readout layer which is in an in-plane magnetization state at room temperature and changes into a perpendicular magnetization state with a rise in temperature. When the magneto-optical recording medium is irradiated with a light beam, the readout layer separates into three regions: a region in an in-plane magnetization state, a region in a perpendicular magnetization state, and a region having a temperature not lower than the Curie temperature thereof. Only the region in the perpendicular magnetization state allows copying of the magnetization of the recording layer. Therefore, even when the diameter and intervals of recording bits on the recording layer are very small, it is possible to reproduce a target recording bit separately from a recording bit adjacent to the target recording bit.
摘要翻译： 磁光记录介质具有由垂直磁化膜制成的记录层和在室温下处于平面内磁化状态并随温度升高而变为垂直磁化状态的读出层。 当磁光记录介质被光束照射时，读出层分为三个区域：面内磁化状态的区域，垂直磁化状态的区域和温度不低于 居里温度。 只有垂直磁化状态的区域才允许复制记录层的磁化。 因此，即使当记录层上的记录位的直径和间隔非常小时，也可以与目标记录位相邻的记录位分开再现目标记录位。
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75.发明授权
公开(公告)号：US5985436A
公开(公告)日：1999-11-16
申请号：US935395
申请日：1997-09-23
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10508 , G11B11/10591 , G11B11/10593 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium including at least a recording layer, and an auxiliary recording layer which achieves magnetostatic coupling with the recording layer. The auxiliary recording layer is in an in-plane magnetization state at temperatures lower than a recording temperature, and in a perpendicular magnetization state at temperatures not lower than the recording temperature. It is therefore possible to achieve a decrease in a recording magnetic field.
摘要翻译： 至少包括记录层的磁光记录介质和与记录层实现静磁耦合的辅助记录层。 辅助记录层在低于记录温度的温度下处于平面内磁化状态，并且在不低于记录温度的温度下处于垂直磁化状态。 因此，可以实现记录磁场的减小。
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公开(公告)号：US5757734A
公开(公告)日：1998-05-26
申请号：US668429
申请日：1996-06-17
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00 , G11B5/66
CPC分类号： G11B11/10586 , G11B11/10515
摘要： A magneto-optical recording medium is composed of a reproducing layer, a recording layer, and an initializing layer, which are laminated in this order. The reproducing layer is provided so that a light beam is projected thereon so as to reproduce information. The recording layer is provided so that information is recorded therein and the information is copied to the reproducing layer at a readout temperature. The initializing layer is provided so that the reproducing layer is initialized at room temperature. Non-magnetic layers are provided between the reproducing layer and the recording layer and between the recording layer and the initializing layer, respectively, so that such two layers are not exchange-coupled each other. The recording layer has a compensation temperature of room temperature, while the initializing layer has a compensation temperature of the readout temperature, which is achieved by temperature rise caused by the projection of the light beam. With such an arrangement, an external magnetic field for initializing the reproducing layer and an external magnetic field for reproduction-use can be omitted, thereby preventing a recording device from becoming large in size, as well as enhancing the recording density of the recording layer.
摘要翻译： 磁光记录介质由再现层，记录层和初始化层组成，按顺序层叠。 提供再现层，使得光束在其上投影以再现信息。 提供记录层，使得信息被记录在其中，并且在读出温度下将信息复制到再现层。 提供初始化层，使得再现层在室温下被初始化。 在再现层和记录层之间以及记录层和初始化层之间分别设置非磁性层，使得这两层不相互交换。 记录层具有室温的补偿温度，而初始化层具有通过由光束的投影引起的温度上升而实现的读出温度的补偿温度。 通过这样的布置，可以省略用于初始化再现层的外部磁场和用于再现用途的外部磁场，从而防止记录装置尺寸变大，以及提高记录层的记录密度。
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公开(公告)号：US07337454B2
公开(公告)日：2008-02-26
申请号：US10407038
申请日：2003-04-03
IPC分类号： G11B23/03
CPC分类号： G11B23/0308
摘要： A disc cartridge of the present invention is provided with a protrusion section on a shutter sliding surface so as to surround at least part of an opening. Moreover, a shutter for opening and closing the opening is provided with a shielding section for covering the opening and the protrusion section and a sliding surface for sliding on a shutter sliding surface during opening and closing operations of the shutter.
摘要翻译： 本发明的盘盒在活门滑动面上设置有一个围绕开口的至少一部分的突出部分。 此外，用于打开和关闭开口的快门设置有用于覆盖开口和突出部分的屏蔽部分和用于在快门的打开和关闭操作期间在快门滑动表面上滑动的滑动表面。
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公开(公告)号：US5989705A
公开(公告)日：1999-11-23
申请号：US748892
申请日：1996-11-14
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10593 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording disk includes a recording layer for recording information as a mark and a reproduction layer, laminated with the recording layer, to which magnetization direction of the recording layer is transferred at high temperatures, wherein the reproduction layer and the recording layer are magnetostatically coupled and are not exchange-coupled. The information is read out by using a temperature distribution generated by a light beam for reproduction. The recording layer has, on a side thereof to which the reproduction layer is not provided, a supplementary back layer of a soft magnetic material composed of ferromagnetic material. The magneto-optical disk is designed to generate good CNR and thereby improves recording density even when a short mark is reproduced.
摘要翻译： 磁光记录盘包括用于记录作为标记的信息的记录层和与记录层层叠的记录层，记录层的高度方向在高温下被转印，其中再现层和记录层是 磁静态耦合并且不交换耦合。 通过使用由光束产生的温度分布来再现信息来读出信息。 记录层在其不具有再现层的一侧具有由铁磁材料构成的软磁性材料的补充背层。 磁光盘被设计成产生良好的CNR，从而即使在再现短标记时也提高记录密度。
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公开(公告)号：US08760784B2
公开(公告)日：2014-06-24
申请号：US13157646
申请日：2011-06-10
IPC分类号： G11B5/09
CPC分类号： G11B5/02 , B82Y10/00 , G11B5/746 , G11B2005/0005
摘要： Disclosed is a magnetic recording/reproduction device 2 including: a recording/reproduction head 7; and a recording/reproduction head 7 for detecting a leakage magnetic field of each of the plurality of magnetic recording cells 1 so as to reproduce information, the recording/reproduction head 7 carrying out the recording on the magnetic recording medium 4 so that the magnetic recording medium 4 includes continuous recording regions that (i) satisfy Nmin≧2 and that (ii) include a continuous recording region that satisfies N≠n×Nmin, where N represents a number of magnetic recording cells 1 in a continuous recording region; Nmin represents a minimum value for N; and n represents a positive integer, the continuous recording regions each being a region on a reproduction track in which region magnetic recording cells 1 sharing an identical magnetization direction are sequentially arranged in a circumferential direction of the magnetic recording medium 4.
摘要翻译： 公开了一种磁记录/再现装置2，包括：记录/再现头7; 以及记录/再现头7，用于检测多个磁记录单元1中的每个磁记录单元1的泄漏磁场以再现信息，记录/再现头7在磁记录介质4上执行记录，使得磁记录 介质4包括（i）满足Nmin≥2并且（ii）包括满足N≠n×Nmin的连续记录区域的连续记录区域，其中N表示连续记录区域中的磁记录单元1的数量; Nmin表示N的最小值; 并且n表示正整数，连续记录区域各自是在磁记录介质4的圆周方向上顺序地布置有共享相同磁化方向的区域磁记录单元1的再现轨道上的区域。
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80.发明授权Heat generation control device for heat-assisted magnetic recording and reproducing apparatus 有权用于热辅助磁记录和重放装置的发热控制装置公开(公告)号：US08264917B2
公开(公告)日：2012-09-11
申请号：US12225597
申请日：2007-03-19
申请人： Ikuo Nakano , Yoshiteru Murakami
发明人： Ikuo Nakano , Yoshiteru Murakami
IPC分类号： G11B11/00
CPC分类号： G11B5/09 , G11B2005/0021
摘要： According to the present invention, heat generation amount control information for controlling a heat generation amount of a heat generating section (20) is arranged to correspond to each of temperatures so that a predetermined heat generation amount is obtained at each of the temperatures. The present invention includes a first computing section (41) that controls the heat generation amount of the heat generating section (20) according to the heat generation amount control information that is arranged in advance to correspond to temperature information that is obtained from a temperature sensor (13). This easily makes it possible to appropriately carry out at least either recording or reproduction with respect to a magnetic recording medium.
摘要翻译： 根据本发明，用于控制发热部分（20）的发热量的发热量控制信息被布置成对应于每个温度，使得在每个温度下获得预定的发热量。 本发明包括：第一计算部（41），其根据与从温度传感器获得的温度信息对应地预先配置的发热量控制信息来控制发热部（20）的发热量 （13）。 这容易使得可以适当地执行关于磁记录介质的记录或再现。
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