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31. 发明授权

US06356516B2 Magneto-optical recording medium and reproducing method for information recorded on the medium 失效
标题翻译：用于记录在介质上的信息的磁光记录介质和再现方法
公开(公告)号：US06356516B2
公开(公告)日：2002-03-12
申请号：US09732092
申请日：2000-12-07
申请人： Ken Tamanoi , Keiji Shono , Sumio Kuroda , Motonobu Mihara , Koji Matsumoto
发明人： Ken Tamanoi , Keiji Shono , Sumio Kuroda , Motonobu Mihara , Koji Matsumoto
IPC分类号： G11B1100
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10593 , Y10S428/90 , Y10T428/12861 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium capable of perfectly masking a mark adjacent to a mark to be reproduced thereby improvng reproduction output. The magneto-optical recording medium includes a transparent substrate, a magnetic reproducing layer laminated on the transparent substrate, a nonmagnetic intermediate layer laminated on the magnetic reproducing layer, and a magnetic recording layer laminated on the nonmagnetic intermediate layer. The reproducing layer has an easy direction of magnetization in a plane at room temperature, and has an easy direction of magnetization perpendicular to a film surface at a given temperature or higher. The nonmagnetic intermediate layer is thin enough to allow magnetostatic bond between the recording layer and the reproducing layer at the given temperature or higher. Instead of the nonmagnetic intermediate layer, a magnetic intermediate layer having an easy direction of magnetization in a plane from room temperature to its Curie temperature may be interposed between the reproducing layer and the recording layer.
摘要翻译：一种磁光记录介质，其能够完美地掩蔽与要再现的标记相邻的标记，从而提高再现输出。磁光记录介质包括透明基板，层叠在透明基板上的磁性再现层，层叠在磁性再现层上的非磁性中间层以及层叠在非磁性中间层上的磁记录层。再现层在室温下在平面中具有容易的磁化方向，并且在给定温度或更高温度下具有与膜表面垂直的易磁化方向。非磁性中间层足够薄，以允许在给定温度或更高温度下记录层和再生层之间的静磁结合。代替非磁性中间层，可以在再现层和记录层之间插入在从室温到其居里温度的平面中具有容易的磁化方向的磁性中间层。

32. 发明授权

US06304522B1 Data medium optical recording/reading device 失效
标题翻译：数据介质光记录/读取装置
公开(公告)号：US06304522B1
公开(公告)日：2001-10-16
申请号：US09600859
申请日：2000-07-27
申请人： Thierry Valet , Olivier Fallou
发明人： Thierry Valet , Olivier Fallou
IPC分类号： G11B1100
CPC分类号： G11B11/10536 , B82Y10/00 , G11B5/00 , G11B5/012 , G11B7/12 , G11B11/00 , G11B11/007 , G11B11/10 , G11B11/10543 , G11B11/10547 , G11B11/1058 , G11B13/00 , G11B13/02 , G11B13/045 , G11B21/21
摘要： An optical read/write device for an information medium which includes a transparent substrate having an approximately plane face carrying at least one pair of electrodes defining an airgap area whose size corresponds approximately to the size of the information item to be written or to be read. The pair of electrodes constitute a resonator for an incident electromagnetic wave having one component of its electric field parallel to the direction of alignment of the electrodes of the pair of electrodes. An optical source illuminates the electrodes with an optical beam, one component of the electric field of which is parallel to the direction of alignment of the pair of electrodes. Under these conditions, when excited by the beam F1, the electrodes will re-emit a beam which has a field concentration within the airgap. The re-emitted beam makes it possible to read/write information on an information medium placed near the electrodes.
摘要翻译：一种用于信息介质的光学读/写装置，其包括具有大致平面的透明基板，所述基板具有承载至少一对电极，所述至少一对电极限定了大致对应于待写入或要读取的信息项的大小的气隙区域。一对电极构成用于入射电磁波的谐振器，该谐振器的电场的一个分量与一对电极的电极的取向方向平行。光源用光束照射电极，其电场的一个分量平行于该对电极的对准方向。在这些条件下，当被光束F1激发时，电极将重新发射具有在气隙内的场浓度的光束。再发射的光束使得可以在放置在电极附近的信息介质上读/写信息。

33. 发明授权

US06301199B1 Magneto-optical recording medium and recording/reproducing apparatus therefor in which recorded magnetic domains are transferred from the recording layer to the reproducing layer 失效
标题翻译：磁光记录介质及其记录/再现装置，其中记录的磁畴从记录层转移到再现层
公开(公告)号：US06301199B1
公开(公告)日：2001-10-09
申请号：US09108317
申请日：1998-07-01
申请人： Atsushi Yamaguchi , Naoyuki Takagi , Yoshiharu Uchihara , Satoshi Sumi , Hiroyuki Awano , Hiroshi Shirai , Hitoshi Watanabe , Norio Ohta
发明人： Atsushi Yamaguchi , Naoyuki Takagi , Yoshiharu Uchihara , Satoshi Sumi , Hiroyuki Awano , Hiroshi Shirai , Hitoshi Watanabe , Norio Ohta
IPC分类号： G11B1100
CPC分类号： G11B11/10584 , G11B7/00736 , G11B7/24085 , G11B11/10515 , G11B11/10595
摘要： A magneto-optical recording medium which includes a reproducing layer. When a laser beam is irradiated to the magneto-optical recording medium, a magnetic domain in a recording layer is transferred, through enlargement, to a reproducing layer increased in temperature. The magneto-optical recording medium further includes a calibration area that has a calibration magnetic domain recorded in a predetermined pattern in the recording layer. In a reproducing apparatus, a laser beam of an optical head is adjusted in output depending upon a reproduced signal obtained by reproducing the calibration magnetic domain.
摘要翻译：一种磁光记录介质，包括再现层。当激光束照射到磁光记录介质时，记录层中的磁畴通过放大转移到温度升高的再生层。磁光记录介质还包括具有以记录层中的预定图案记录的校准磁畴的校准区域。在再现装置中，根据通过再现校准磁畴获得的再现信号，调节光学头的激光束的输出。

34. 发明授权

US06295253B1 Magnetooptical disk unit capable of recording or reproducing signals having different domain lengths under the same conditions, signal recording method and signal reproducing method 失效
标题翻译：能够在相同条件下记录或再现具有不同域长度的信号的磁光盘单元，信号记录方法和信号再现方法
公开(公告)号：US06295253B1
公开(公告)日：2001-09-25
申请号：US09666549
申请日：2000-09-21
申请人： Kenichiro Mitani , Naoyuki Takagi , Hitoshi Noguchi , Atsushi Yamaguchi , Hiroki Ishida
发明人： Kenichiro Mitani , Naoyuki Takagi , Hitoshi Noguchi , Atsushi Yamaguchi , Hiroki Ishida
IPC分类号： G11B1100
CPC分类号： G11B20/10 , G11B11/1051 , G11B11/10515 , G11B11/10534 , G11B11/1055 , G11B27/19 , G11B27/24 , G11B2220/2525
摘要： When recording a recorded signal consisting of “01011001110” in a magnetooptical recording medium, (1,1) corresponding to a domain of 2T is converted to (1,0,1), and (0,0) is converted to (0,1,0) in the recorded signal. In other words, the first “1” of (1,1) is converted to unit bits “1,0” and the first “0” of (0,0) is converted to unit bits “0,1”. Similarly, the first “1” of (1,1,1) corresponding to a domain of 3T is converted to unit bits “1,0”, and the second “1” is converted to unit bits “1,0”. “1” or “0” of the final unit bit is not converted but recorded as such. Consequently, a signal can be correctly reproduced by extension ally transferring domains having different domain lengths from a recording layer to a reproducing layer under the same reproducing conditions.
摘要翻译：当在磁光记录介质中记录由“01011001110”组成的记录信号时，对应于2T的域的（1,1）被转换为（1,0,1），（0,0）被转换为（0， 1,0）记录信号。换句话说，（1,1）的第一个“1”被转换为单位比特“1,0”，（0,0）的第一个“0”被转换为单位比特“0,1”。类似地，对应于3T的域的（1,1,1）的第一“1”被转换为单位比特“1,0”，第二“1”被转换为单位比特“1,0”。最终单位位的“1”或“0”不转换而是被记录。因此，通过在相同的再现条件下将具有不同域长度的域从记录层延伸到再现层，可以正确地再现信号。

35. 发明授权

US06288981B1 Magneto-optical recording device using magneto-resistive head 失效
标题翻译：使用磁阻头的磁光记录装置
公开(公告)号：US06288981B1
公开(公告)日：2001-09-11
申请号：US09618280
申请日：2000-07-18
申请人： Kazuetsu Yoshida , Hiroaki Nemoto , Hideki Saga
发明人： Kazuetsu Yoshida , Hiroaki Nemoto , Hideki Saga
IPC分类号： G11B1100
CPC分类号： G11B5/00 , G11B11/10528 , G11B11/10532 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： In an optical recording and magnetic-head reproducing system, the reproduced output is prevented from starting to decrease, upon the length of record bits getting shorter, in the range of the bit length larger than reproducing resolution of a magnetic reproducing head. When data are recorded magneto-optically on a magnetic recording medium, the radius of curvature of arcs constituting the boundary of recorded magnetic domains is made as large as possible so that the shape of the recorded spot may be substantially rectangular. As a result, it becomes possible to improve the efficiency of magnetic reproduction, and high-output as well as high-SN-ratio reproduction at high linear recording density can be achieved.
摘要翻译：在光学记录和磁头再现系统中，在比特长度大于磁再现头的再现分辨率的范围内，在记录位长度越来越短的情况下，防止再现的输出开始降低。当数据是在磁记录介质上磁光记录，构成记录磁畴的边界的弧的曲率半径尽可能大，使得记录点的形状可以是大致矩形。结果，可以提高磁再现的效率，并且可以实现在高线性记录密度下的高输出以及高SN比再现。

36. 发明授权

US06288980B1 Magneto-optical head for information reading 失效
标题翻译：用于信息读取的磁光头
公开(公告)号：US06288980B1
公开(公告)日：2001-09-11
申请号：US09397622
申请日：1999-09-16
申请人： Eugene Ivanovitch Il′Yashenko , Valentina Prokofiena Klin , Alexander Gennadievicj Soloviev
发明人： Eugene Ivanovitch Il′Yashenko , Valentina Prokofiena Klin , Alexander Gennadievicj Soloviev
IPC分类号： G11B1100
CPC分类号： H01F10/28 , A23L11/03 , G01R33/0322 , G11B11/10547 , G11B11/10586 , H01F10/245
摘要： The invention relates to the devices for reading the information from magnetic carriers of recording, more detailed, to magneto-optical heads for reproducing the information. The technical result is substantiated in higher resolution, increase of ratio of useful signal to noise, simplification of construction and manufacturing process of the head, extending the service life. Magneto-optical head for reproducing of information consists of underlay 2 made of material characterized by high transparency in the spectral range of the source of the reading polarized light, for example, from a mono-crystalline gadolinium-gallium garnet. On the side of the underlay 2, that is turned towards magnetic medium 4 with the stored information, a magneto-optical transducer 3 is placed in form of a ferrite-garnet film, on the free side of which a reflective mirror layer 6 can be deposited. The opposite side of the underlay 2 in the fragments 11 and 12 lying in the propagation way of the reading light beam, the one entering the underlay 2, as well as the one reflected from film 3, is made convex, with a curvature assuring possibility of enlargement of the domain structure image of the ferrite-garnet film 3. Additionally, the curvatures of the convex fragments 11 and 12 may be different.
摘要翻译：本发明涉及从用于再现信息的磁光头的更详细记录的磁性载体读取信息的装置。技术成果证明，分辨率更高，有用信号与噪声比例增加，头部施工和制造工艺简化，延长了使用寿命。用于再现信息的磁光头由由读取偏振光源的光谱范围（例如单晶钆镓石榴石）的高透明度特征的材料制成。在衬底2侧，利用所存储的信息转向磁介质4，磁光变换器3以铁氧体 - 石榴石膜的形式放置，其自由侧上可以具有反射镜层6 存放碎片11和12中的底片2的相对侧以读取光束的传播方式，进入底层2的那个以及从膜3反射的一个被制成凸起，具有确保可能性的曲率铁氧体 - 石榴石膜3的畴结构图像的扩大。另外，凸起片11和12的曲率可以不同。

37. 发明授权

US06278668B1 Magneto-optical storage media 有权
标题翻译：磁光存储介质
公开(公告)号：US06278668B1
公开(公告)日：2001-08-21
申请号：US09442794
申请日：1999-11-18
申请人： Junji Hirokane , Noboru Iwata , Akira Takahashi
发明人： Junji Hirokane , Noboru Iwata , Akira Takahashi
IPC分类号： G11B1100
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10593
摘要： A magneto-optical storage medium includes: a reproduction layer exhibiting an in-plane magnetization state at room temperature and changing to a perpendicular magnetization state at a transition temperature Tp1; a supplementary reproduction layer exhibiting an in-plane magnetization state at room temperature and changing to a perpendicular magnetization state at a transition temperature Tp2; a non-magnetic intermediate layer; and a storage layer made of a perpendicular magnetization film, the layers being deposited in this order, the magneto-optical storage medium being arranged so as to satisfy: Tp1
摘要翻译：磁光存储介质包括：在室温下呈平面内的磁化状态并在转变温度Tp1处变为垂直磁化状态的再现层;在室温下呈现面内磁化状态的补充再生层到转变温度Tp2的垂直磁化状态;非磁性中间层; 和由垂直磁化膜制成的存储层，这些层按此顺序沉积，磁光存储介质被布置为满足：这种布置使得磁光存储介质能够放大存储在存储层中的磁信息并将其复制到再现层，并且其信号的周期等于或低于从存储层再现的光的衍射极限，而不减小振幅。

38. 发明授权

US06249490B1 Magneto-optical recording/reproducing method and apparatus 有权
标题翻译：磁光记录/再现方法和装置
公开(公告)号：US06249490B1
公开(公告)日：2001-06-19
申请号：US09325560
申请日：1999-06-04
申请人： Yasuyuki Miyaoka
发明人： Yasuyuki Miyaoka
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10595
摘要： A method of determining a strength of a reproducing magnetic field for an apparatus for reproducing information from a magneto-optical recording medium by applying an optical beam to the magneto-optical recording medium while the reproducing magnetic field is applied, the magneto-optical recording medium including a record storage layer and a domain wall displacement layer both made of a magnetic film, and the method including the steps of: recording a test signal having a predetermined pattern on the medium; applying the reproducing magnetic field to the medium by changing the strength thereof and at the same time scanning the medium with the optical beam to reproduce the recorded test signal; and detecting an amplitude of the reproduced test signal and setting as the strength of the reproducing magnetic field a value of a predetermined margin added to the strength of the reproducing magnetic field applied when the amplitude satisfying a predetermined condition is detected.
摘要翻译：一种确定再现磁场的强度的方法，用于通过在施加再现磁场时将光束施加到磁光记录介质而从磁光记录介质再现信息的装置，磁光记录介质包括由磁性膜制成的记录存储层和畴壁位移层，并且所述方法包括以下步骤：在介质上记录具有预定图案的测试信号; 通过改变其强度将再现磁场施加到介质上，同时用光束扫描介质以再现记录的测试信号; 并且当检测到满足预定条件的振幅时，检测再现的测试信号的幅度并设置为再现磁场的强度，该值与加到的再现磁场的强度相加。

39. 发明授权

US06246640B1 Magneto-optical recording medium capable of recording multiple value signals 失效
标题翻译：能够记录多个值信号的磁光记录介质
公开(公告)号：US06246640B1
公开(公告)日：2001-06-12
申请号：US09129750
申请日：1998-08-05
申请人： Katsusuke Shimazaki , Masafumi Yoshihiro , Akito Sakemoto , Norio Ohta , Osamu Ishizaki , Satoru Ohnuki , Toshinori Sugiyama , Kazuko Ishitsuka
发明人： Katsusuke Shimazaki , Masafumi Yoshihiro , Akito Sakemoto , Norio Ohta , Osamu Ishizaki , Satoru Ohnuki , Toshinori Sugiyama , Kazuko Ishitsuka
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10502 , G11B11/10508 , G11B11/1051 , G11B11/10521 , G11B11/10528 , G11B11/1053 , G11B11/10534 , G11B11/10554 , G11B11/10586 , G11B11/10595
摘要： On a surface of a transparent substrate 1 having a preformat pattern 2 formed thereon are laminated a first recording layer 4 in which a recording state exists in one different magnetic field region of an applied external magnetic field and a second recording layer 6 in which two recording states exist in magnetic field regions different from that for the first recording layer. As required, dielectric layers 3, 5 and 7, a reflecting layer 8 and a protection layer 9 can be laminated. The 4-valued recording of information becomes possible by assigning information signals “1”, “0”, “3”, and “2” to H0, H1, H2 and H3, respectively.
摘要翻译：在其上形成有预格式化图案2的透明基板1的表面上层叠有其中记录状态存在于施加的外部磁场的一个不同磁场区域中的第一记录层4和其中两个记录状态存在于与第一记录层不同的磁场区域中。根据需要，可以层压电介质层3,5和7，反射层8和保护层9。分别向H0，H1，H2和H3分配信息信号“1”，“0”，“3”和“2”，信息的4值记录成为可能。

40. 发明授权

US06229785B1 Optical information recording medium, its manufacturing method, optical information recording/reproducing method and optical information recorder/reproducer 失效
标题翻译：光信息记录介质，其制造方法，光信息记录/再现方法和光信息记录/再现器
公开(公告)号：US06229785B1
公开(公告)日：2001-05-08
申请号：US09043988
申请日：1998-03-30
申请人： Hideki Kitaura , Ken'ichi Nagata , Noboru Yamada , Kenichi Nishiuchi
发明人： Hideki Kitaura , Ken'ichi Nagata , Noboru Yamada , Kenichi Nishiuchi
IPC分类号： G11B1100
CPC分类号： G11B7/243 , G11B7/24 , G11B7/26 , G11B2007/24306 , G11B2007/24316 , G11B2007/2432
摘要： An optical information recording medium provided with an information layer comprising at least Te, O and M atoms (wherein the M is at least one element selected from a metallic element, a metalloid element or a semiconductor element, most preferably Pd). The information layer comprises the O atoms in 40 atom %-60 atom %, the M atoms in 2 atom %-25 atom % and the Te atoms in 15 atom %-58 atom %, thus obtaining a preferable recording property having a high C/N ratio and a small jitter in a wide power margin in recording and reproducing information having a small b/d ratio (a ratio of a recording bit length b for a spot diameter d).
摘要翻译：一种具有至少包含Te，O和M原子的信息层（其中M是选自金属元素，准金属元素或半导体元素中的至少一种元素，最优选Pd）的光学信息记录介质。该信息层包括40原子％-60原子％的O原子，2原子％-25原子％的M原子和15原子％-58原子％的Te原子，从而获得具有高C / N比，并且在具有小b / d比（记录位长度b对于点直径d的比率）的记录和再现信息中的宽功率余量中的小抖动。

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