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1. 发明授权

US06477118B1 METHOD AND APPARATUS FOR RECORDING AND REPRODUCING INFORMATION BY APPLYING FIELD IN A DIRECTION OTHER THAN THE DIRECTION OF MAGNETIZATION OR THE DIRECTION TO A SURFACE OF AN INFORMATION RECORDING MEDIUM 失效
标题翻译：用于记录和再现信息的方法和装置以除磁化方向或方向到信息记录介质的表面之外的方向进行
公开(公告)号：US06477118B1
公开(公告)日：2002-11-05
申请号：US09449765
申请日：1999-11-26
申请人： Hiroyuki Awano , Masaki Sekine , Manabu Tani , Masafumi Yoshihiro , Hiroshi Ido
发明人： Hiroyuki Awano , Masaki Sekine , Manabu Tani , Masafumi Yoshihiro , Hiroshi Ido
IPC分类号： G11B1100
CPC分类号： G11B7/1387 , G11B11/1051 , G11B11/10515 , G11B11/10534 , G11B11/10543 , G11B11/10554 , G11B11/1058 , G11B11/10584 , G11B11/10591 , G11B2005/0021
摘要： Disclosed are a reproducing method and a reproducing apparatus capable of performing reproduction with a wide power margin, as well as a recording method and a recording apparatus preferably used for super high density recording. A recording and reproducing apparatus 101 principally comprises a magnetic field-applying unit, a laser beam-radiating section, and a signal processing system. A magnetic coil 29, which is provided for the magnetic field-applying unit, is arranged so that its axis of magnetic field generation 102 is oblique to a surface of an information-recording medium 100. A reproducing magnetic field is applied in an oblique direction to the surface of the information-recording medium 100 by using the magnetic coil 29 while radiating a reproducing light beam to the medium by using the laser beam-radiating section. Accordingly, the leak magnetic field in the in-plane direction from a recording magnetic domain in a recording layer is amplified. The inversion of magnetization in a reproducing layer tends to occur, and the reproducing power margin is widened. The recording and reproducing apparatus 101 is also capable of recording information. An extremely minute recording magnetic domain can be formed in the recording layer of the information-recording medium.
摘要翻译：公开了能够以大的功率余量进行再现的再现方法和再现装置，以及优选用于超高密度记录的记录方法和记录装置。记录和再现装置101主要包括磁场施加单元，激光束辐射部分和信号处理系统。设置用于磁场施加单元的磁线圈29被布置成使得其磁场产生轴102倾斜于信息记录介质100的表面。再现磁场沿倾斜方向通过使用电磁线圈29同时通过使用激光束辐射部分将再现光束照射到介质上而到信息记录介质100的表面。因此，记录层中记录磁畴的面内方向的泄漏磁场被放大。再现层中的磁化反转趋于发生，再现功率余量变大。记录和再现装置101还能够记录信息。可以在信息记录介质的记录层中形成极细的记录磁畴。

2. 发明授权

US06160769A Optical recording medium and optical recording device 失效
标题翻译：光记录介质和光记录装置
公开(公告)号：US06160769A
公开(公告)日：2000-12-12
申请号：US131226
申请日：1998-08-07
申请人： Satoru Ohnuki , Toshinori Sugiyama , Masafumi Yoshihiro , Tsuyoshi Maro
发明人： Satoru Ohnuki , Toshinori Sugiyama , Masafumi Yoshihiro , Tsuyoshi Maro
IPC分类号： G11B7/12 , G11B7/24 , G11B7/243 , G11B7/254 , G11B7/257 , G11B11/105 , G11B11/00
CPC分类号： G11B7/252 , B82Y10/00 , G11B7/122 , G11B7/24 , G11B7/2534 , G11B7/254 , G11B7/2585 , G11B11/10534 , G11B11/10554 , G11B11/1058 , G11B11/10584 , G11B2007/24306 , G11B2007/25417 , G11B2007/2571 , G11B2007/25713
摘要： A magneto-optical recording medium comprises a protective layer having a self-lubricating property formed at an uppermost layer on a side opposite to a substrate wherein a recording or reproducing light beam comes into a side of the protective layer. The thickness and the refractive index of the protective layer are selected under predetermined conditions depending on whether or not evanescent light is transmitted through the protective layer. It is possible to perform high density recording and reproduction thereof by utilizing the evanescent light. A protective layer having a self-lubricating property may be also formed on a bottom surface of an optical head opposing to the optical recording medium. Even when the optical head contacts with the surface of the optical recording medium, the sliding scratch scarcely occurs, because the optical head smoothly glides on the recording medium surface. It is possible to reduce the influence of multiple interference of light which would be otherwise caused in an air layer existing between the optical recording medium and the optical head, and it is possible to suppress variation in reproduced signal intensity.
摘要翻译：磁光记录介质包括具有自润滑性的保护层，该保护层形成在与衬底相反的一侧的最上层，其中记录或再现光束进入保护层的一侧。保护层的厚度和折射率根据是否通过保护层透过的预定条件进行选择。可以通过利用ev逝光进行高密度记录和再现。也可以在与光记录介质相对的光学头的底面上形成具有自润滑性的保护层。即使当光学头与光学记录介质的表面接触时，由于光学头平滑地滑动在记录介质表面上，几乎不发生滑动刮痕。可以减少在光记录介质和光头之间存在的空气层中会引起的光的多次干涉的影响，并且可以抑制再现信号强度的变化。

3. 发明授权

US5783320A Magneto-optical recording medium and process for producing the same 失效
标题翻译：磁光记录介质及其制造方法
公开(公告)号：US5783320A
公开(公告)日：1998-07-21
申请号：US781711
申请日：1997-01-10
申请人： Katsusuke Shimazaki , Satoru Ohnuki , Masatoshi Hashimoto , Yoshinori Shirai , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Yukinori Yamada , Eiji Koyama , Hitoshi Furusho
发明人： Katsusuke Shimazaki , Satoru Ohnuki , Masatoshi Hashimoto , Yoshinori Shirai , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Yukinori Yamada , Eiji Koyama , Hitoshi Furusho
IPC分类号： G11B7/26 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10591 , G11B11/10584 , G11B11/10586 , G11B11/10589 , G11B7/26 , Y10S428/90 , Y10T428/12771 , Y10T428/12931
摘要： Disclosed is a magneto-optical recording medium which comprises a transparent substrate and, provided on the substrate, a magneto-optical recording film comprising a perpendicular magnetic film based on rare earth metal-transition metal and an auxiliary magnetic film having spontaneous magnetization which exerts, between itself and the magneto-optical recording film, an exchange coupling force on each other and in which the auxiliary magnetic film used is a magnetic film which readily rotates its magnetization direction toward the external magnetic field in the neighborhood of the Curie temperature of the magneto-optical recording film and has a squareness ratio of not more than 1 in the neighborhood of the Curie temperature, and a process for producing the magneto-optical recording medium.
摘要翻译：公开了一种磁光记录介质，其包括透明基板，并且在基板上设置包括基于稀土金属 - 过渡金属的垂直磁性膜和具有自发磁化的辅助磁膜的磁光记录膜，在它们自身和磁光记录膜之间，彼此之间的交换耦合力，并且其中使用的辅助磁膜是磁性薄膜，其容易地使其磁化方向在磁光的居里温度附近的外部磁场旋转 - 光学记录膜，并且在居里温度附近具有不大于1的矩形比率，以及用于制造磁光记录介质的工艺。

4. 发明授权

US06434088B1 Recording and reproducing apparatus having a magneto-optical head with an objective lens and laser-beam-permeable member 失效
标题翻译：具有具有物镜的磁光头和激光束可透过构件的记录和再现装置
公开(公告)号：US06434088B1
公开(公告)日：2002-08-13
申请号：US09482463
申请日：2000-01-13
申请人： Osamu Ishizaki , Katsusuke Shimazaki , Toshinori Sugiyama , Masafumi Yoshihiro , Susumu Imai
发明人： Osamu Ishizaki , Katsusuke Shimazaki , Toshinori Sugiyama , Masafumi Yoshihiro , Susumu Imai
IPC分类号： G11B1100
CPC分类号： B82Y10/00 , G11B5/127 , G11B5/17 , G11B7/1372 , G11B11/10532 , G11B11/10554 , G11B11/10565 , G11B11/10569 , G11B11/10571 , G11B11/10578 , G11B11/1058 , G11B17/0436
摘要： A compact recording and reproducing apparatus includes a floating-type head movable in a fan shape in parallel with the surface of a disk recording medium in order to make faster access to the tracks and to record information at a higher density. A slider and a head are secured to the tip of a swing arm capable of fan-shaped swing movement, and a solid immersion lens is used for the head, so that the light beam can be passed along the arm from the fulcrum at the rotating pivot of the swing arm member.
摘要翻译：一种紧凑的记录和再现装置包括浮动型头部，其可与盘记录介质的表面平行地移动为扇形，以便更快地访问轨道并以更高的密度记录信息。滑块和头部被固定到能够进行扇形摆动的摆臂的尖端，并且头部使用固体浸没透镜，使得光束可以沿着旋转的支点从支臂通过摆臂构件的枢轴。

5. 发明授权

US06424601B1 Magneto-optical recording media having an auxiliary magnetic layer 失效
标题翻译：具有辅助磁性层的磁光记录介质
公开(公告)号：US06424601B1
公开(公告)日：2002-07-23
申请号：US09142747
申请日：1998-11-16
申请人： Satoru Oonuki , Masafumi Yoshihiro , Nobuyuki Nagai , Katsusuke Shimazaki , Hiroyuki Awano , Hiroshi Shirai , Norio Ohta , Satoshi Sumi , Atsushi Yamaguchi
发明人： Satoru Oonuki , Masafumi Yoshihiro , Nobuyuki Nagai , Katsusuke Shimazaki , Hiroyuki Awano , Hiroshi Shirai , Norio Ohta , Satoshi Sumi , Atsushi Yamaguchi
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B7/00745 , G11B11/10508 , G11B11/10521 , G11B11/10528 , G11B11/10578 , G11B11/10584 , G11B11/10593 , G11B11/10595 , G11B27/19 , G11B27/3027
摘要： A magneto-optical recording medium 11 has, in order from the laser irradiation side, a second auxiliary magnetic film 4, first auxiliary magnetic film 5, and magneto-optical recording film 6. First and second auxiliary magnetic films 4 and 5 change from in-plane magnetization to perpendicular magnetization when their respective critical temperatures TCR1 and TCR2 are exceeded. The Curie temperatures TC0, TC1 and TC2 of the magneto-optical recording film and the first and the second auxiliary magnetic films 4, 5 and their critical temperatures TCR1 and TCR2 satisfy the relationship: room temperature
摘要翻译：磁光记录介质11从激光照射侧起依次具有第二辅助磁性膜4，第一辅助磁性膜5和磁光记录膜6.第一和第二辅助磁性膜4和5从当它们各自的临界温度TCR1和TCR2被超过时，平面磁化对垂直磁化。磁光记录膜和第一和第二辅助磁膜4,5的居里温度TC0，TC1和TC2及其临界温度TCR1和TCR2满足关系：室温

6. 发明授权

US06385140B2 Magneto-optical recording medium and reproducing method for reproducing magnetic domain in enlarged form on a reproducing layer 失效
标题翻译：磁光记录介质和再现方法，用于在再现层上以放大形式再现磁畴
公开(公告)号：US06385140B2
公开(公告)日：2002-05-07
申请号：US09799602
申请日：2001-03-07
申请人： Satoru Ohnuki , Norio Ohta , Katsusuke Shimazaki , Masafumi Yoshihiro , Hiroki Takao , Hitoshi Watanabe
发明人： Satoru Ohnuki , Norio Ohta , Katsusuke Shimazaki , Masafumi Yoshihiro , Hiroki Takao , Hitoshi Watanabe
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10593
摘要： A magneto-optic recording medium includes a second auxiliary magnetic film, a first auxiliary magnetic film and a magneto-optic recording film on a substrate. The auxiliary magnetic films change from in-plane magnetization to vertical magnetization at critical temperatures TCR1 and TCR2. Since they have the relation TCR1>TCR2, the magnetic domain transferred from the magneto-optic recording film to the first auxiliary magnetic film at the time of reproduction is expanded in diameter and is transferred to the second auxiliary magnetic film when the temperature profiles of the auxiliary magnetic films inside an optical spot are utilized. The magnetic domain of the magneto-optic recording film can be expanded and transferred, too, by means of magnetostatic coupling by using a non-magnetic film in place of the first auxiliary magnetic film. Pulse reproduction light subjected to power modulation in synchronism with a reproduction clock can be used at the time of reproduction. Even when a very small magnetic domain is recorded, the intensity of an amplified reproduction signal can be detected and excellent C/N can be obtained.
摘要翻译：磁光记录介质包括在基板上的第二辅助磁膜，第一辅助磁膜和磁光记录膜。在临界温度TCR1和TCR2下，辅助磁膜从面内磁化转变为垂直磁化。由于它们具有关系TCR1> TCR2，所以在再现时从磁光记录膜转移到第一辅助磁性膜的磁畴的直径扩大并且当第二辅助磁性膜的温度分布利用光点内的辅助磁膜。磁光记录膜的磁畴也可以通过使用非磁性膜代替第一辅助磁性膜的静磁耦合来扩展和转移。在再现时可以使用经受与再现时钟同步的功率调制的脉冲再现光。即使记录非常小的磁畴，也可以检测出放大的再现信号的强度，可以获得优异的C / N。

7. 发明授权

US06226234B1 Magneto-optic recording medium and reproducing method for reproducing magnetic domain in enlarged form on a reproducing layer 失效
标题翻译：磁光记录介质和再现层放大形式的磁畴再现方法
公开(公告)号：US06226234B1
公开(公告)日：2001-05-01
申请号：US09091480
申请日：1998-06-19
申请人： Satoru Ohnuki , Norio Ohta , Katsusuke Shimazaki , Masafumi Yoshihiro , Hiroki Takao , Hitoshi Watanabe
发明人： Satoru Ohnuki , Norio Ohta , Katsusuke Shimazaki , Masafumi Yoshihiro , Hiroki Takao , Hitoshi Watanabe
IPC分类号： G11B1100
CPC分类号： G11B11/10515 , G11B11/10584 , G11B11/10593
摘要： A magneto-optic recording medium includes a second auxiliary magnetic film, a first auxiliary magnetic film and a magneto-optic recording film on a substrate. The auxiliary magnetic films change from in-plane magnetization to vertical magnetization at critical temperatures TCR1 and TCR2. Since they have the relation TCR1>TCR2, the magnetic domain transferred from the magneto-optic recording film to the first auxiliary magnetic film at the time of reproduction is expanded in diameter and is transferred to the second auxiliary magnetic film when the temperature profiles of the auxiliary magnetic films inside an optical spot are utilized. The magnetic domain of the magneto-optic recording film can be expanded and transferred, too, by means of magnetostatic coupling by using a non-magnetic film in place of the first auxiliary magnetic film. Pulse reproduction light subjected to power modulation in synchronism with a reproduction clock can be used at the time of reproduction. Even when a very small magnetic domain is recorded, the intensity of an amplified reproduction signal can be detected and excellent C/N can be obtained.
摘要翻译：磁光记录介质包括在基板上的第二辅助磁膜，第一辅助磁膜和磁光记录膜。在临界温度TCR1和TCR2下，辅助磁膜从面内磁化转变为垂直磁化。由于它们具有关系TCR1> TCR2，所以在再现时从磁光记录膜转移到第一辅助磁性膜的磁畴的直径扩大并且当第二辅助磁性膜的温度分布利用光点内的辅助磁膜。磁光记录膜的磁畴也可以通过使用非磁性膜代替第一辅助磁性膜的静磁耦合来扩展和转移。在再现时可以使用经受与再现时钟同步的功率调制的脉冲再现光。即使记录非常小的磁畴，也可以检测出放大的再现信号的强度，可以获得优异的C / N。

8. 发明授权

US6061307A Magneto-optical recording medium having a plurality of magnetic layers 失效
标题翻译：具有多个磁性层的磁光记录介质
公开(公告)号：US6061307A
公开(公告)日：2000-05-09
申请号：US737365
申请日：1996-11-08
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： G11B11/105 , G11B11/00
CPC分类号： G11B11/10515 , G11B11/10502 , G11B11/1051 , G11B11/10528 , G11B11/10534 , G11B11/10586 , G11B11/10508 , G11B11/10521 , G11B11/1053 , G11B11/10554 , 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 H.sub.0, H.sub.1, H.sub.2 and H.sub.3, respectively.
摘要翻译： PCT No.PCT / JP95 / 00888 Sec。 371日期：1996年11月8日 102（e）日期1996年11月8日PCT提交1995年5月10日PCT公布。公开号WO95 / 30986 日期：1995年11月16日在其上形成有预格式化图案2的透明基板1的表面上层叠有第一记录层4，其中记录状态存在于施加的外部磁场的一个不同的磁场区域中，第二记录层 6，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。

9. 发明授权

US5637411A Magneto-optical recording medium and process for producing the same 失效
标题翻译：磁光记录介质及其制造方法
公开(公告)号：US5637411A
公开(公告)日：1997-06-10
申请号：US227673
申请日：1994-04-14
申请人： Katsusuke Shimazaki , Satoru Ohnuki , Masatoshi Hashimoto , Yoshinori Shirai , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Yukinori Yamada , Eiji Koyama , Hitoshi Furusho
发明人： Katsusuke Shimazaki , Satoru Ohnuki , Masatoshi Hashimoto , Yoshinori Shirai , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Yukinori Yamada , Eiji Koyama , Hitoshi Furusho
IPC分类号： G11B7/26 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10591 , G11B11/10584 , G11B11/10586 , G11B11/10589 , G11B7/26 , Y10S428/90 , Y10T428/12771 , Y10T428/12931
摘要： Disclosed is a magneto-optical recording medium which comprises a transparent substrate and, provided on the substrate, a magneto-optical recording film comprising a perpendicular magnetic film based on rare earth metal-transition metal and an auxiliary magnetic film having spontaneous magnetization which exerts, between itself and the magneto-optical recording film, an exchange coupling force and wherein the auxiliary magnetic film is a magnetic film which readily rotates its magnetization direction toward the external magnetic field in the neighborhood of the Curie temperature of the magneto-optical recording film and has a squareness ratio of not more than 1 in the neighborhood of the Curie temperature. Also disclosed is a process for producing the magneto-optical recording medium.
摘要翻译：公开了一种磁光记录介质，其包括透明基板，并且在基板上设置包括基于稀土金属 - 过渡金属的垂直磁性膜和具有自发磁化的辅助磁膜的磁光记录膜，介于其自身与磁光记录膜之间的交换耦合力，并且其中辅助磁膜是在磁光记录膜的居里温度附近容易地将其磁化方向旋转到外部磁场的磁性膜，在居里温度附近具有不大于1的矩形比。还公开了一种用于制造磁光记录介质的方法。

10. 发明授权

US06388954B1 Magneto-optical recording medium having clock-marks on recording layer and apparatus for recording and reproducing same 失效
标题翻译：在记录层上具有时钟标记的磁光记录介质以及用于记录和再现记录层的装置
公开(公告)号：US06388954B1
公开(公告)日：2002-05-14
申请号：US09280811
申请日：1999-03-30
申请人： Hiroyuki Awano , Katsusuke Shimazaki , Hiroki Takao , Norio Ohta , Akiyoshi Itou , Katsuji Nakagawa , Manabu Tani , Masafumi Yoshihiro , Masaki Sekine
发明人： Hiroyuki Awano , Katsusuke Shimazaki , Hiroki Takao , Norio Ohta , Akiyoshi Itou , Katsuji Nakagawa , Manabu Tani , Masafumi Yoshihiro , Masaki Sekine
IPC分类号： G11B1100
CPC分类号： G11B7/1275 , G11B11/10515 , G11B11/10543
摘要： The magneto-optical recording medium has a magnetic domain magnification reproducing layer and an information recording layer. Clock marks are formed on the information recording layer, making it possible to generate a reproducing clock on the basis of these. The clock marks are detected either by irradiating directly with light of wavelength &lgr;2(&lgr;1≠&lgr;2), being different from the light of wavelength &lgr;1 which is used for reproducing the recording marks, or by applying a direct-current magnetic field, transferring and enlarging the clock marks on to the magnetic domain magnification reproducing layer, and detecting the reproduction signals from this magnetic domain magnification reproducing layer. Since the reproducing clock is in exact synchronisation with the recording marks, it is eminently suitable as a clock for pulse-modulated reproducing light and reproducing magnetic fields used when reproducing the reproducing layer.
摘要翻译：磁光记录介质具有磁畴倍率再现层和信息记录层。在信息记录层上形成时钟标记，从而可以基于这些生成再现时钟。通过直接照射波长为lambd2（lambd1> lambd2）的光，不同于用于再现记录标记的波长lambd1的光，或通过施加直流磁场，转印和将时钟标记放大到磁畴倍率再现层，并检测来自该磁畴倍率再现层的再现信号。由于再现时钟与记录标记完全同步，所以它非常适合用作脉冲调制再现光的时钟并且再现再生层时使用的再现磁场。

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