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61. 发明授权

US5989671A Optical recording medium and manufacturing method thereof 失效
标题翻译：光记录介质及其制造方法
公开(公告)号：US5989671A
公开(公告)日：1999-11-23
申请号：US879916
申请日：1997-06-20
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
IPC分类号： G11B5/00 , G11B7/003 , G11B7/004 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B13/00 , G11B13/04 , G11B20/00 , G11B23/28 , G11B5/60
CPC分类号： G11B23/281 , G11B11/10582 , G11B13/00 , G11B13/04 , G11B13/045 , G11B23/28 , G11B5/00 , G11B7/0031 , G11B7/24 , G11B7/26 , G11B11/10502 , G11B20/00086 , G11B7/004 , G11B7/007 , Y10S428/90 , Y10T428/265
摘要： An optical tape including an optical recording layer for permitting information to be optically recorded thereon and a light-reflective magnetic layer. The light-reflective magnetic layer which reflects light projected onto the recording layer, also permits magnetic recording or magneto-optical recording to be performed thereon, thereby increasing a storage capacity of the optical tape remarkably. Further, the optical tape is provided with a layer to form guiding grooves for tracking control. The layer to form guiding grooves is made up of ultraviolet-hardening resin, photo-resist, or a photochromic material. For example, in the case of using ultraviolet-hardening resin, after a guiding groove pattern has been exposed by projecting an ultraviolet ray on a layer made up of ultraviolet-hardening resin, the exposed areas harden to form areas corresponding to guiding grooves between those exposed areas. The guiding grooves are formed by removing the areas corresponding to guiding grooves from the layer made up of the ultraviolet-hardening resin. Additionally, along with a guiding groove pattern, an index pattern can also be exposed. The guiding grooves thus formed do not reduce the recording density for information of the optical tape.
摘要翻译：一种光学带，包括用于允许光学记录信息的光学记录层和光反射性磁性层。反射投影到记录层上的光的光反射性磁性层也可以在其上进行磁记录或磁光记录，从而显着提高光带的存储容量。此外，光带设置有一层以形成用于跟踪控制的引导槽。形成导向槽的层由紫外线硬化树脂，光致抗蚀剂或光致变色材料构成。例如，在使用紫外线硬化树脂的情况下，通过在由紫外线固化型树脂构成的层上投射紫外线而引导槽图案露出后，露出的区域变硬，形成与引导槽对应的区域暴露地区。通过从由紫外线固化树脂构成的层去除与导向槽相对应的区域来形成引导槽。另外，与引导槽图案一样，还可以暴露索引图案。如此形成的引导槽不会降低用于光带的信息的记录密度。

62. 发明授权

US5635296A Magneto-optical recording medium whereon overwriting is permitted by light intensity modulation 失效
标题翻译：通过光强度调制允许覆盖的磁光记录介质
公开(公告)号：US5635296A
公开(公告)日：1997-06-03
申请号：US260095
申请日：1994-06-15
申请人： Junichiro Nakayama , Michinobu Mieda , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Junichiro Nakayama , Michinobu Mieda , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10506 , G11B11/10523 , G11B11/10586 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium includes a first magnetic layer, a second magnetic layer and a third magnetic layer respectively made of rare earth-transition metal alloys. The first magnetic layer has a perpendicular magnetization in a temperature range between room temperature and its Curie temperature. The second magnetic layer has its Curie temperature higher than that of the first magnetic layer, and coercive force thereof at room temperature is nearly zero. The third magnetic layer has a perpendicular magnetization in a temperature range between room temperature and its Curie temperature. The Curie temperature of the third magnetic layer is higher than the Curie temperature of the first magnetic layer. The coercive force of the third magnetic layer at room temperature is lower than that of the first magnetic layer. The compensation temperature of the third magnetic layer is higher than that of the second magnetic layer. Having the above arrangement, an overwriting is permitted on the magneto-optical recording medium, and an initializing magnetic field and a recording magnetic field in a magneto-optical recording and reproducing device are set in the same direction.
摘要翻译：磁光记录介质包括分别由稀土 - 过渡金属合金制成的第一磁性层，第二磁性层和第三磁性层。第一磁性层在室温和居里温度之间的温度范围内具有垂直磁化强度。第二磁性层的居里温度高于第一磁性层，其室温下的矫顽力几乎为零。第三磁性层在室温与其居里温度之间的温度范围内具有垂直磁化强度。第三磁性层的居里温度高于第一磁性层的居里温度。室温下第三磁性层的矫顽力低于第一磁性层的矫顽力。第三磁性层的补偿温度高于第二磁性层的补偿温度。具有上述结构，在磁光记录介质上允许重写，磁光记录和再现装置中的初始化磁场和记录磁场被设置在相同的方向上。

63. 发明授权

US5095350A Magneto-optic memory medium 失效
标题翻译：磁光存储介质
公开(公告)号：US5095350A
公开(公告)日：1992-03-10
申请号：US505476
申请日：1990-04-06
申请人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Tomokazu Ise , Tomoyuki Miyake , Junichiro Nakayama
发明人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Tomokazu Ise , Tomoyuki Miyake , Junichiro Nakayama
IPC分类号： G11B11/10 , G11B11/105 , H01F10/08
CPC分类号： G11B11/10586 , Y10S428/928 , Y10T428/12861
摘要： A magneto-optic memory medium of an exchange-coupled ferrimagnetic double-layered structure having a recording film of a specific amorphous GdTbFe alloy and a reading film of a specific amorphous GdNdFe alloy.
摘要翻译：具有特定无定形GdTbFe合金的记录膜和特定无定形GdNdFe合金的读取膜的交换耦合铁磁双层结构的磁光存储介质。

64. 发明授权

US5088086A Optical recording medium and the method of recording, reading, and erasing information using it 失效
标题翻译：光学记录介质及其记录，读取和擦除信息的方法
公开(公告)号：US5088086A
公开(公告)日：1992-02-11
申请号：US385444
申请日：1989-07-27
申请人： Kazuo Van , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Kazuo Van , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G02F1/17 , G03C1/73 , G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/0055 , G11B7/24 , G11B7/244
CPC分类号： G11B7/253 , G11B7/00455 , G11B7/244 , G11B2007/24612 , G11B7/2467 , G11B7/2531 , G11B7/2533 , Y10S430/146
摘要： The invention provides an optical recording medium and a method of recording, reading, and erasing information to an optical recording medium, where information is recorded, read, and erased to the recording medium by applying beams projected from a light source capable of varying wavelength of beams. The recording medium contains at least two kinds of organic compounds each presenting photochromic phenomenon and being dispersed in binder. By projecting beams onto the optical recording medium, recording, reading, and erasure of information making use of a photochromic phenomenon can be executed independently against each organic compound dispersed in the recording medium. As a result, the optical recording medium promotes to increase the information recording density in proportion to the number of the kind of organic compounds.

65. 发明授权

US5077714A Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam 失效
标题翻译：使用磁场和光束的强度调制的磁光记录和再现装置
公开(公告)号：US5077714A
公开(公告)日：1991-12-31
申请号：US340771
申请日：1989-04-20
申请人： Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
发明人： Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/1051 , G11B11/10515 , G11B11/10521 , G11B11/10528
摘要： A magneto-optical recording and reproducing device for recording and reproducing data determined by negative magnetized areas in a magneto-optical recording medium. The device including a laser beam output level control means for controlling the intensity of a laser beam when recording data on the medium. The device prevents the causes of false signals and incorrect detection influenced by residual negative magnetized domains by increasing laser beam intensity when rewriting positive magnetized areas to erase residual negative magnetized areas.

66. 发明授权

US5498485A Magneto-optical recording medium and manufacturing method thereof 失效
标题翻译：磁光记录介质及其制造方法
公开(公告)号：US5498485A
公开(公告)日：1996-03-12
申请号：US207054
申请日：1994-03-08
申请人： Junichiro Nakayama , Hiroyuki Katayama , Junji Hirokane , Michinobu Mieda
发明人： Junichiro Nakayama , Hiroyuki Katayama , Junji Hirokane , Michinobu Mieda
IPC分类号： G11B11/105 , G11B5/66 , G11B11/00
CPC分类号： G11B11/10582 , G11B11/10586
摘要： A magneto-optical recording medium has a recording layer including two magnetic layers. The magneto-optical recording medium satisfies a condition of .vertline.A.sub.1.K.sub.1 -A.sub.2.K.sub.2 .vertline..ltoreq.0.18 (erg.sup.2 /cm.sup.4) wherein A.sub.1, K.sub.1, A.sub.2, and K.sub.2 respectively represent an exchange constant of a first magnetic layer, a perpendicular magnetic anisotropy of the first magnetic layer, an exchange constant of a second magnetic layer, and a perpendicular magnetic anisotropy of the second magnetic layer. First and Second magnetic layers are made of TbFeCo.
摘要翻译：磁光记录介质具有包括两个磁性层的记录层。磁光记录介质满足条件| A1.K1-A2.K2 |

67. 发明授权

US5343448A External magnetic field device for a magnetooptical information recording and reproducing apparatus 失效
标题翻译：用于磁光信息记录和再现装置的外部磁场装置
公开(公告)号：US5343448A
公开(公告)日：1994-08-30
申请号：US949335
申请日：1992-09-22
申请人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Takahiro Miyake , Kenji Ohta , Shozo Kobayashi
发明人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Takahiro Miyake , Kenji Ohta , Shozo Kobayashi
IPC分类号： G11B11/105 , G11B11/00 , G11B11/10
CPC分类号： G11B11/10508
摘要： An external magnetic field device for a magnetooptical information recording and reproducing apparatus in which an external magnetic field to be applied to a magnetooptical information recording medium is modulated by supplying to a magnetic head an alternate current the polarity of which is changed according to information to be recorded. The device comprises an offset circuit for producing an offset in the alternate current. The direction of the offset is selected so as to increase the current level of the polarity by which the initial magnetization of the information recording medium is reversed. The direction of the offset may be selected so as to cancel the leakage magnetic field.
摘要翻译：一种用于磁光信息记录和再现装置的外部磁场装置，其中通过向磁头提供施加到磁光信息记录介质的外部磁场，该极性的极性根据要被改变的信息而改变记录。该装置包括用于在交流电中产生偏移的偏置电路。选择偏移的方向，以便增加信息记录介质的初始磁化反转的极性的电流电平。可以选择偏移的方向以抵消泄漏磁场。

68. 发明授权

US5338646A Optical memory device having an improved light reflection or optical memory layer 失效
标题翻译：具有改进的光反射或光存储层的光存储器件
公开(公告)号：US5338646A
公开(公告)日：1994-08-16
申请号：US15066
申请日：1993-02-08
申请人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kazuo Van , Kenji Ohta
发明人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kazuo Van , Kenji Ohta
IPC分类号： G11B7/24 , G11B7/244 , G11B7/247 , G11B7/248 , G11B7/251 , G11B7/254 , G11B7/257 , G11B7/258 , G03C1/72 , G11B5/702 , G11B5/706
CPC分类号： G11B7/258 , G11B7/244 , G11B7/2472 , G11B7/248 , G11B7/251 , G11B2007/24308 , G11B7/2533 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/259 , G11B7/2595 , Y10S428/90 , Y10S430/146
摘要： An optical memory device comprising at least one transparent substrate and a light reflection layer or an optical memory layer laminated on one surface of the substrate, in which the light reflection layer or the optical memory layer is constituted with a UV-ray or electron-ray cured resin dispersingly containing a light reflective metal powder or an optical recording material.
摘要翻译：一种光学存储器件，包括至少一个透明基板和层叠在基板的一个表面上的光反射层或光学存储器层，其中光反射层或光学存储器层由UV射线或电子射线分散含有光反射金属粉末或光学记录材料的固化树脂。

69. 发明授权

US5303100A Magnetic disk device with floating-type magnetic head 失效
标题翻译：带浮动磁头的磁盘装置
公开(公告)号：US5303100A
公开(公告)日：1994-04-12
申请号：US752052
申请日：1991-08-29
申请人： Junichiro Nakayama , Hiroyuki Katayama , Tomoyuki Miyake , Kenji Ohta
发明人： Junichiro Nakayama , Hiroyuki Katayama , Tomoyuki Miyake , Kenji Ohta
IPC分类号： G11B21/21 , G11B5/54 , G11B11/10 , G11B11/105 , G11B19/20 , G11B21/12 , G11B5/55
CPC分类号： G11B19/20 , G11B11/10556 , G11B11/1058 , G11B11/10586 , G11B11/10595 , G11B5/54
摘要： A magnetic disk device having a floating-type magnetic head, for use with a disk-shaped recording medium having a sliding area for the floating-type magnetic head formed outside a recording area. The length in the disk radial direction of a suspension supporting the floating-type magnetic head is varied depending on individual magnetic disk devices. In another arrangement, a control means is provided for setting two reference values so that a radial position of the floating-type magnetic head detected by a detection section is compared with these reference values, and for alternating one of the preset reference values to the other reference value upon receiving a rotation stop signal. In still another arrangement, control means is provided, whereby a radial position for sliding of the floating-type magnetic head is randomly varied within the sliding area. According to these arrangements, since the radial position for sliding of the floating-type magnetic head is varied within the sliding area without being located at the same position, abrasion within the sliding area can be dispersed. As a result, it becomes possible to extend the longevities of the floating-type magnetic head and the recording medium.
摘要翻译：一种具有浮动型磁头的磁盘装置，与形成在记录区域之外的浮动型磁头的滑动区域的盘形记录介质一起使用。支撑浮动型磁头的悬架的盘径方向上的长度根据各个磁盘装置而变化。在另一种布置中，提供控制装置用于设置两个参考值，使得由检测部分检测到的浮动型磁头的径向位置与这些参考值进行比较，并且将一个预设参考值与另一个参考值交替接收到旋转停止信号时的参考值。在另一种布置中，提供控制装置，由此浮动式磁头的滑动的径向位置在滑动区域内随机变化。根据这些布置，由于浮动型磁头的滑动的径向位置在滑动区域内变化而不位于相同的位置，所以可以分散滑动区域内的磨损。结果，可以延长浮动型磁头和记录介质的寿命。

70. 发明授权

US5270994A Magneto-optical recording and reading method 失效
标题翻译：磁光记录和读取方法
公开(公告)号：US5270994A
公开(公告)日：1993-12-14
申请号：US931990
申请日：1992-08-19
申请人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/105 , G11B19/02 , G11B7/00
CPC分类号： G11B11/10595 , G11B11/10517 , G11B11/10523 , G11B11/1056 , G11B19/02
摘要： A recording and reading method and device of magneto-optical memory elements are provided to record and read an information signal to and from the magneto-optical memory elements, which contain at least two magnetic layers that are magnetically coupled, by means of a light-intensity modulated overwriting method employing a recording magnetic field and an initializing magnetic field. A control feature is included for applying the initializing magnetic field to the magneto-optical memory elements at least one time between the point of time when moving the magneto-optical memory elements to a recording or reading position, finishing a reading or recording, and ascertaining the selected operation such as recording or erasing and the point of time when subsequent recording begins such that the initializing magnetic field is not applied at the same time as the recording magnetic field.
摘要翻译：提供磁光存储器元件的记录和读取方法和装置，用于通过发光元件记录和读取与包含至少两个磁耦合的磁层的磁光存储元件的信息信号，采用记录磁场和初始化磁场的强度调制重写方法。包括控制特征，用于在将磁光存储元件移动到记录或读取位置，完成读取或记录之间的时间点之间的至少一个时间将初始化磁场施加到磁光存储元件，并且确定所选择的操作如记录或擦除以及后续记录开始的时间点，使得初始化磁场不与记录磁场同时施加。

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