专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07313055B2 Magnetic domain wall displacement type magneto-optical recording medium 失效
标题翻译：磁畴壁位移型磁光记录介质
公开(公告)号：US07313055B2
公开(公告)日：2007-12-25
申请号：US10725027
申请日：2003-12-02
申请人： Tomoyuki Hiroki
发明人： Tomoyuki Hiroki
IPC分类号： G11B11/00
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10593
摘要： Provided is a magneto-optical recording medium capable of accurately reproducing a signal of a recording density exceeding a resolution of an optical system without making a constitution thereof complicated. The magnetic domain wall displacement type magneto-optical recording medium, comprises: a magnetic domain wall displacement layer in which a magnetic domain wall moves to contribute to information reproduction; a memory layer holding a recorded magnetic domain corresponding to the information; and a switching layer which is arranged between the magnetic domain wall displacement layer and the memory layer and has a Curie temperature lower than Curie temperatures of the magnetic domain wall displacement layer and the memory layer. In the recording medium, the magnetic domain wall displacement layer is constituted of two or more magnetized films, and a magnitude of a net magnetization of the magnetic domain wall displacement layer in a temperature range from the Curie temperature of the switching layer to the Curie temperature of the magnetic domain wall displacement layer is substantially zero.
摘要翻译：提供一种能够精确地再现超过光学系统的分辨率的记录密度的信号而不使其结构复杂的磁光记录介质。磁畴壁位移型磁光记录介质包括：磁畴壁位移层，其中磁畴壁移动以有助于信息再现; 保存对应于该信息的记录磁畴的存储层; 以及布置在磁畴壁位移层和存储层之间并具有低于磁畴壁位移层和存储层的居里温度的居里温度的开关层。在记录介质中，磁畴壁位移层由两个或多个磁化膜构成，并且在从开关层的居里温度到居里温度的温度范围内的磁畴壁位移层的净磁化强度的大小的磁畴壁位移层基本上为零。

2. 发明授权

US07164623B2 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US07164623B2
公开(公告)日：2007-01-16
申请号：US10925580
申请日：2004-08-25
申请人： Ryo Kurita , Ken Tamanoi , Shoyu Ito , Motonobu Mihara
发明人： Ryo Kurita , Ken Tamanoi , Shoyu Ito , Motonobu Mihara
IPC分类号： G11B11/00
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10593
摘要： The present invention provides a magneto-optical recording medium including a recording layer, an intermediate layer and a reproducing layer stacked in this order. Information recorded in the recording layer is transferred to the reproducing layer through the intermediate layer so that the information is reproduced. The reproducing layer includes an upper reproducing layer, a coupling layer, and a lower reproducing layer formed in this order on the intermediate layer. Magnetic information in the upper reproducing layer in an area whose temperature is increased to a predetermined temperature is transferred to the lower reproducing layer through the coupling layer.
摘要翻译：本发明提供一种磁光记录介质，其包括依次堆叠的记录层，中间层和再现层。记录在记录层中的信息通过中间层传送到再现层，从而再现信息。再现层包括在中间层上依次形成的上再现层，耦合层和下再现层。通过耦合层将温度升高到预定温度的区域中的上再现层中的磁信息传送到下再现层。

3. 发明申请

US20050266272A1 Magneto-optical storage medium 审中-公开
标题翻译：磁光存储介质
公开(公告)号：US20050266272A1
公开(公告)日：2005-12-01
申请号：US10527893
申请日：2003-08-08
申请人： Gavin Phillips
发明人： Gavin Phillips
IPC分类号： G11B3/00 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10584 , G11B11/10586 , G11B11/10593
摘要： The invention relates to a magneto-optical storage medium (200) and specifically a domain expansion storage medium. The medium (200) comprises a magnetic storage layer (107) for long term information storage and a thereto magnetically coupled magnetic reproduction or read-out layer (111), wherein an enhanced magnetic domain may be generated during read out. The magnetic layers (107, 111) are separated by a non-metallic or metallic, non-magnetic or magnetic layer (109) and at least one metal layer (201, 203), such as Palladium or Platinum, is located adjacent to the magnetic reproduction layer (111). Preferably this metal layer (201, 203) is located on each side of the magnetic reproduction layer (111). The metal layer(s) (201, 203) provides increased heat dissipation and Kerr effect thereby permitting increased data density of the magneto-optical storage medium (200).
摘要翻译：本发明涉及磁光存储介质（200），具体地涉及域扩展存储介质。介质（200）包括用于长期信息存储的磁存储层（107）和磁耦合磁性再现或读出层（111），其中在读出期间可能产生增强的磁畴。磁性层（107,111）由非金属或金属，非磁性或磁性层（109）分开，并且至少一个金属层（例如钯或铂）等位于邻近磁性再现层（111）。优选地，该金属层（201,203）位于磁性再生层（111）的每一侧。金属层（201,203）提供增加的散热和克尔效应，从而允许增加磁光存储介质（200）的数据密度。

4. 发明授权

US06949302B2 Magneto-optical recording medium having a reproducing layer composed to control movement of domain walls therein 失效
标题翻译：磁光记录介质具有重构层，用于控制畴壁的移动
公开(公告)号：US06949302B2
公开(公告)日：2005-09-27
申请号：US09990428
申请日：2001-11-21
申请人： Noboru Iwata , Junji Hirokane
发明人： Noboru Iwata , Junji Hirokane
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10593 , G11B11/10595 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium includes at least a first magnetic layer, a second magnetic layer and a third magnetic layer which are layered in this order, the first magnetic layer being formed of a perpendicularly magnetized film having a relatively small wall coercivity and a relatively large wall mobility compared with the third magnetic layer in the vicinity of a predetermined temperature, and the magneto-optical recording medium satisfies conditions Tc2
摘要翻译：磁光记录介质至少包括依次层叠的第一磁性层，第二磁性层和第三磁性层，第一磁性层由具有相对小的壁矫顽力的垂直磁化膜形成，在与预定温度附近的第三磁性层相比，具有大的壁迁移率，并且磁光记录介质满足条件<？in-line-formula description =“In-line formula”end =“lead”>> Tc 2 <？in-line-formula description =“In-line Formulas”end =“lead”？ > Tc 2 其中Tcomp 1是第一磁性层的补偿温度，Tc 1，Tc 2和 Tc 3分别是第一，第二和第三磁性层的居里温度。

5. 发明授权

US06894954B2 Domain wall-displacement type magneto-optical medium and reproducing method for the same 失效
标题翻译：畴壁位移型磁光介质及其再现方法
公开(公告)号：US06894954B2
公开(公告)日：2005-05-17
申请号：US10029938
申请日：2001-12-31
申请人： Yukari Aoki
发明人： Yukari Aoki
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10515 , G11B11/10593 , Y10T428/12465 , Y10T428/31
摘要： A magneto-optical recording medium has a domain wall displacement layer, a recording layer for accumulating information and a switching layer arranged between said domain wall displacement layer and said recording layer and having a Curie temperature lower than those of the latter two layers. The domain wall displacement layer, the switching layer and the recording layer are coupled by exchange coupling at temperature not higher than the Curie temperature of the switching layer. The saturation magnetization of the domain wall displacement layer and the recording layer are in opposite directions to each other when the layers are coupled by exchange coupling at a temperature close to the Curie temperature of the switching layer.
摘要翻译：磁光记录介质具有畴壁位移层，用于累积信息的记录层和布置在所述畴壁位移层和所述记录层之间并具有比后两层的居里温度低的居里温度的切换层。畴壁位移层，开关层和记录层通过交换耦合在不高于开关层的居里温度的温度下耦合。当层在接近开关层的居里温度的温度下通过交换耦合耦合时，畴壁位移层和记录层的饱和磁化强度彼此相反。

6. 发明授权

US06844083B2 Magneto-optical recording medium possessing a magnetic assist layer 失效
标题翻译：具有磁辅助层的磁光记录介质
公开(公告)号：US06844083B2
公开(公告)日：2005-01-18
申请号：US10629215
申请日：2003-07-29
申请人： Toshio Sugimoto , Ken Tamanoi
发明人： Toshio Sugimoto , Ken Tamanoi
IPC分类号： G11B11/105
CPC分类号： G11B11/10593 , G11B11/10591 , Y10T428/12465 , Y10T428/12896 , Y10T428/12986 , Y10T428/24942
摘要： A magneto-optical recording medium has a configuration such that information recorded can be read from a region smaller than a beam spot by applying an external magnetic field and directing a light beam in reproducing. The magneto-optical recording medium includes a magnetic recording layer for recording and holding information, a magnetic reproducing layer provided on one side of the magnetic recording layer on which the light beam is incident, a nonmagnetic layer provided on another side of the magnetic recording layer opposite to the magnetic reproducing layer, and a magnetic assist layer provided on the nonmagnetic layer. The magnetic assist layer has a coercive force smaller than an external magnetic field applied in recording or reproducing information.
摘要翻译：磁光记录介质具有这样的结构：通过施加外部磁场并引导光束再现，可以从小于束斑的区域读取记录的信息。磁光记录介质包括用于记录和保持信息的磁记录层，设置在其上入射光束的磁记录层的一侧的磁再现层，设置在磁记录层另一侧的非磁性层与磁性再现层相对，以及设置在非磁性层上的磁辅助层。磁辅助层具有小于在记录或再现信息中施加的外部磁场的矫顽力。

7. 发明申请

US20040244027A1 Magneto-optical recording medium and signal reproduction method 失效
标题翻译：磁光记录介质和信号再现方法
公开(公告)号：US20040244027A1
公开(公告)日：2004-12-02
申请号：US10765601
申请日：2004-01-27
发明人： Tetsuhiro Sakamoto , Kazutomo Miyata , Teruyuki Ota , Makoto Watanabe , Yasuhito Tanaka , Goro Fujita , Takeshi Miki , Kazuhiko Fujiie
IPC分类号： G11B011/00
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10593
摘要： In reproduction from a magneto-optical recording medium by the domain wall displacement detection method, it is possible to avoid occurrence of ghost signals and to improve dropout, and moreover design of magnetic layers is made easy. A configuration is adopted having at least, in order from the side of incidence of laser light for reproduction, a first magnetic layer 11 constituting a reproduction layer, a second magnetic layer 12 constituting a control layer, a third magnetic layer 13 constituting a blocking layer, and a fourth magnetic layer 14 constituting a recording layer, which if the respective Curie temperatures thereof are TC1, TC2, TC3 and TC4, satisfy the relations TC1>TC3>TC2 and TC4>TC3. At the same time, if the magnetic anisotropy of the second magnetic layer is Ku2 and the magnetic anisotropy of the third magnetic layer is Ku3, the relation Ku3>Ku2 is satisfied. A configuration is adopted in which a magnetic domain wall in the first magnetic layer 11 in front of the spot irradiated by the reproduction light on the optical recording medium in the direction of travel is displaced toward the peak temperature portion occurring in the proximity of the center of the reproduction light spot due to irradiation by reproduction light, so that a recorded domain is expanded, and in addition displacement in the spot direction of a domain wall in the first magnetic layer 11 behind the reproduction light spot in the direction of travel is suppressed; moreover, the second magnetic layer 12 and the third magnetic layer 13 control the magnetic exchange coupling between the first magnetic layer 11 and the fourth magnetic layer 14.
摘要翻译：在通过畴壁位移检测方法从磁光记录介质的再现中，可以避免重影信号的发生和改善压差，并且进一步使得磁性层的设计变得容易。从构成再现层的第一磁性层11，构成控制层的第二磁性层12，构成阻挡层的第三磁性层13至少按照从再现用激光入射侧开始的顺序，以及构成记录层的第四磁性层14，如果各自的居里温度为TC1，TC2，TC3和TC4，则满足关系TC1> TC3> TC2和TC4> TC3。同时，如果第二磁性层的磁各向异性为Ku2，第三磁性层的磁各向异性为Ku3，则满足关系Ku3> Ku2。采用这样的结构，其中在光记录介质上沿着行进方向由再现光照射的光斑前面的第一磁性层11中的磁畴壁朝着在中心附近发生的峰值温度部分移位由于再现光的照射而产生的再现光点，使得记录的域被扩展，并且另外抑制在行进方向上的再现光点后面的第一磁性层11中的畴壁的光斑方向上的位移 ; 此外，第二磁性层12和第三磁性层13控制第一磁性层11和第四磁性层14之间的磁交换耦合。

8. 发明授权

US06808823B2 Magneto-optical recording medium and manufacturing method therefor 失效
标题翻译：磁光记录介质及其制造方法
公开(公告)号：US06808823B2
公开(公告)日：2004-10-26
申请号：US09880347
申请日：2001-06-13
申请人： Tetsuo Hosokawa , Shin-ichiro Matsuo
发明人： Tetsuo Hosokawa , Shin-ichiro Matsuo
IPC分类号： G11B11105
CPC分类号： G11B11/10593 , G11B11/10582 , G11B11/10584 , G11B11/10591 , Y10T428/12646 , Y10T428/12931 , Y10T428/12986 , Y10T428/265
摘要： A magneto-optical recording medium including a magnetic recording layer for recording information and a magnetic reproducing layer provided on the magnetic recording layer for reading information. The magnetic reproducing layer is separated into a first reproducing layer having a first composition and a second reproducing layer having a second composition slightly different from the first composition. The first and second reproducing layers have the same principal components. By changing a ratio in film thickness between the first and second reproducing layers, variations in composition of the first and second reproducing layers can be corrected.
摘要翻译：包括用于记录信息的磁记录层和设置在磁记录层上用于读取信息的磁再现层的磁光记录介质。磁性再现层被分离成具有第一组成的第一再现层和具有与第一组成稍微不同的第二组成的第二再现层。第一和第二再现层具有相同的主要成分。通过改变第一和第二再现层之间的膜厚度的比率，可以校正第一和第二再现层的组成变化。

9. 发明授权

US06693854B2 Reproducing method and reproducing apparatus for magneto-optical recording medium 失效
标题翻译：磁光记录介质的再现方法和再现装置
公开(公告)号：US06693854B2
公开(公告)日：2004-02-17
申请号：US10388397
申请日：2003-03-17
申请人： Katsusuke Shimazaki , Susumu Imai , Norio Ohta , Hiroyuki Awano , Masafumi Yoshihiro , Hitoshi Watanabe , Hiroki Takao
发明人： Katsusuke Shimazaki , Susumu Imai , Norio Ohta , Hiroyuki Awano , Masafumi Yoshihiro , Hitoshi Watanabe , Hiroki Takao
IPC分类号： G11B1100
CPC分类号： G11B11/10595 , G11B11/10513 , G11B11/10515 , G11B11/10528 , G11B11/10584 , G11B11/10593 , G11B20/00086 , G11B20/1217 , G11B2020/1275 , G11B2020/1298 , G11B2220/2525
摘要： External magnetic fields H(x) or reproducing light beams L(x) having different intensity patterns are applied to an identical recording position on a magneto-optical recording medium so that different pieces of information corresponding to the patterns are reproduced from the identical recording position. A function H(x) or L(x) is a password for obtaining the information. Only a person, who knows the function, can access specified information recorded on the magneto-optical recording medium. The function H(x) or L(x) is a function in which the magnetic field intensity or the light intensity is modulated with respect to the recording position x so that magnetic domains may be thinned out to perform reproduction at a specified cycle from continuous magnetic domains in a recording area. Other than the use for the purpose of security, reproduced C/N can be remarkably improved by performing reproduction n times while radiating a reproducing light beam PL/PH which is power-modulated so that the high power PH is applied at every cycle which is not less than n times the recording clock, to a specified magneto-optical recording medium capable of magnetic domain-magnifying reproduction.
摘要翻译：具有不同强度图案的外部磁场H（x）或再现光束L（x）被施加到磁光记录介质上相同的记录位置，使得与图案对应的不同的信息从相同的记录位置再现。函数H（x）或L（x）是用于获取信息的密码。知道该功能的人只能访问记录在磁光记录介质上的指定信息。函数H（x）或L（x）是其中相对于记录位置x调制磁场强度或光强度的功能，使得磁畴可以被稀疏以在连续的指定周期进行再现记录区域的磁畴。除了用于安全性的用途之外，通过执行再现n次，可以显着提高再现的C / N，同时辐射被功率调制的再现光束PL / PH，使得在每个周期都应用高功率PH 不小于n倍的记录时钟，到能够进行磁畴放大再现的指定磁光记录介质。

10. 发明授权

US06690625B2 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06690625B2
公开(公告)日：2004-02-10
申请号：US10132837
申请日：2002-04-25
申请人： Junji Hirokane , Noboru Iwata
发明人： Junji Hirokane , Noboru Iwata
IPC分类号： G11B1100
CPC分类号： G11B11/10593 , G11B11/10584 , G11B11/10591
摘要： A magneto-optical recording medium is provided with at least: a recording layer, made of a perpendicular magnetization film, in which magnetized information is recorded in the form of a perpendicular direction of magnetization; a magnetic flux generating layer, made of a perpendicular magnetization film, which is exchange-coupled with the recording layer; and a read-out layer, having a perpendicular magnetization at a predetermined temperature or higher temperatures than the predetermined temperature, which copies the magnetized information of the recording layer by magneto-static coupling with the magnetic flux generating layer and the recording layer, wherein the magnetic flux generating layer is a magnetic film having a lower Curie temperature than that of the recording layer and having a larger total magnetization than that of the recording layer at a temperature at which the read-out layer has a perpendicular magnetization.
摘要翻译：磁光记录介质至少设有：由垂直磁化膜制成的记录层，其中磁化信息以垂直磁化方向的形式被记录; 由与记录层交换耦合的垂直磁化膜制成的磁通量产生层; 以及读出层，其具有在比预定温度高的预定温度或更高温度的垂直磁化，其通过与磁通量产生层和记录层的磁静耦合来复制记录层的磁化信息，其中磁通量产生层是具有比记录层低的居里温度的磁性膜，并且在读出层具有垂直磁化的温度下具有比记录层更高的总磁化强度的磁性膜。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式