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61. 发明授权

US5838646A Optical disk having a protective layer of specified thickness relative to the numerical aperture of the objective lens 失效
标题翻译：具有相对于物镜的数值孔径具有规定厚度的保护层的光盘
公开(公告)号：US5838646A
公开(公告)日：1998-11-17
申请号：US818552
申请日：1997-03-14
申请人： Tetsu Watanabe , Yoshio Aoki
发明人： Tetsu Watanabe , Yoshio Aoki
IPC分类号： G11B7/007 , G11B7/135 , G11B7/24 , G11B7/243 , G11B11/105 , G11B11/00
CPC分类号： G11B7/00718 , G11B11/10532 , G11B11/10534 , G11B11/10541 , G11B11/10543 , G11B11/10554 , G11B11/10558 , G11B11/10584 , G11B7/0037 , G11B7/1372 , G11B7/1374 , G11B7/24038 , G11B7/24059 , G11B2007/13727 , G11B7/007 , G11B7/243
摘要： An optical disc system uses an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a light beam on a recording layer of the optical disc in order to perform recording and/or reproducing of information. The thickness of the light-transmitting cover falls within the range of 0.05 mm to 0.6 mm, the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 1.10, and the wavelength of the light beam is selected to be between 100 nm to 780 nm.
摘要翻译：光盘系统使用具有透光盖和物镜的光盘，用于将光束聚集或聚焦在光盘的记录层上，以便执行信息的记录和/或再现。透光罩的厚度在0.05mm至0.6mm的范围内，物镜的数值孔径（NA）设定在0.55至1.10的范围内，并且选择光束的波长在100nm至780nm之间。

62. 发明授权

US5590096A Rewritable storage apparatus using first and second bias magnetic fields 失效
标题翻译：使用第一和第二偏置磁场的可重写存储装置
公开(公告)号：US5590096A
公开(公告)日：1996-12-31
申请号：US341743
申请日：1994-11-18
申请人： Masaoki Ohtsuka , Teruji Yamakawa , Tetsuo Maruyama
发明人： Masaoki Ohtsuka , Teruji Yamakawa , Tetsuo Maruyama
IPC分类号： G11B11/10 , G11B5/02 , G11B11/105 , G11B19/00 , G11B19/04 , G11B11/00
CPC分类号： G11B11/10534 , G11B11/10517 , G11B11/10554 , G11B11/1056 , G11B11/10595 , G11B19/00 , G11B19/04
摘要： The speed of a write operation in an optical magnetic disk unit is improved by effectively setting the bias magnetic field. When new data is written in an area on a medium, a bias control method for a rewritable storage apparatus which records data by applying a bias magnetic field for data recording and erases recorded data by applying a bias magnetic field for data erasing, applies the bias magnetic field for data erasing to the area to perform an erase operation; applies the bias magnetic field for writing to the area to perform a record operation to record the new data; and applies and maintains the bias magnetic field for data erasing to the medium directly after the record operation is finished.
摘要翻译：通过有效地设定偏置磁场来提高光盘单元中的写入操作的速度。当将新数据写入介质中的区域时，通过施加用于数据记录的偏置磁场并通过施加用于数据擦除的偏置磁场来擦除记录数据来记录数据的可重写存储装置的偏置控制方法，用于将数据擦除到该区域以执行擦除操作的磁场; 将用于写入的偏置磁场施加到该区域以执行记录操作以记录新数据; 并且在记录操作完成之后直接施加并保持用于数据擦除的偏置磁场到介质。

63. 发明授权

US5485435A Magnetic field generator in which an end face of a magnetic material member projects from man end face of magnetic field generating cores 失效
标题翻译：磁场发生器，其中磁性材料构件的端面从磁场产生芯的端面突出
公开(公告)号：US5485435A
公开(公告)日：1996-01-16
申请号：US331148
申请日：1994-10-28
申请人： Toru Matsuda , Fujihiro Ito , Yutaka Kusano , Kenji Makino , Koyo Hasegawa
发明人： Toru Matsuda , Fujihiro Ito , Yutaka Kusano , Kenji Makino , Koyo Hasegawa
IPC分类号： G11B5/127 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10554 , G11B11/10508 , G11B11/10536 , G11B11/1058 , G11B5/1278
摘要： A magnetic field generator includes a base, a plurality of magnetic field generating cores formed on the base, magnetic field generating coils respectively wound around the plurality of magnetic field generating cores, a magnetic material member being disposed between adjacent twos of the plurality of magnetic field generating cores, and a drive device for driving the magnetic field generating coils. Also, a magneto-optical recording apparatus includes an optical head for irradiating a light beam to a magneto-optical recording medium and the magnetic field generator. The magnetic field generator can set the maximum modulation frequency at a higher value while ensuring a scope of the effective vertical magnetic field sufficiently and efficiently, to thereby permit multi-recording.
摘要翻译：一种磁场发生器，包括基座，形成在基座上的多个磁场产生磁心，分别缠绕在多个磁场产生磁芯上的磁场产生线圈，磁性体部件设置在多个磁场的相邻的两个之间以及用于驱动磁场产生线圈的驱动装置。而且，磁光记录装置包括用于将光束照射到磁光记录介质的光头和磁场发生器。磁场发生器可以将最大调制频率设定在更高的值，同时充分有效地确保有效的垂直磁场的范围，从而允许多记录。

64. 发明授权

US5420832A Half height magnetooptical-disk recording and/or reproducing apparatus for a 5.25 inch large capacity magnetooptical-disk 失效
标题翻译：用于5.25英寸大容量磁光盘的半高磁光盘记录和/或再现装置
公开(公告)号：US5420832A
公开(公告)日：1995-05-30
申请号：US148996
申请日：1993-11-08
申请人： Kazuo Shigematsu , Yoji Tomono , Atsushi Ichikawa , Toshiyasu Hattori
发明人： Kazuo Shigematsu , Yoji Tomono , Atsushi Ichikawa , Toshiyasu Hattori
IPC分类号： G11B20/12 , G11B7/00 , G11B7/004 , G11B7/09 , G11B7/13 , G11B11/10 , G11B11/105 , G11B25/04 , G11B27/00 , G11B11/00
CPC分类号： G11B7/131 , G11B11/10545 , G11B11/10554 , G11B11/1056 , G11B11/10597 , G11B25/043 , G11B7/0943 , G11B7/133 , G11B11/10543
摘要： An optical disk recording and/or reproducing apparatus is provided which is capable of storing a large amount of information, transferring data at a high speed, supporting SCSI-1 and SCSI-2, and the reducing the size of the apparatus, particularly the height (to the so-called half height), The magnetooptical-disk recording and/or reproducing apparatus of the invention is of the same size as that of the 5.25-inch magnetic disk recording and/or reproducing apparatus of half height, or it is 146 mm wide, 203 mm deep, and 41.3 mm high. The front panel 1 has the cartridge slot 2 and cartridge ejection button 3 provided thereon so that a cartridge including a disk for recording and reproducing information is inserted in or ejected from the apparatus. The cartridge insertion slot 2 has a double flap provided so that at least one part of the double flap closes the slot, preventing dust from entering through the cartridge slot 2 except when the cartridge is inserted in or ejected from the apparatus, According to this invention, the magnetooptical-disk recording and/or reproducing apparatus can record information of 1 GB/side or above on the disk and has the size of half height.
摘要翻译：提供了一种光盘记录和/或再现装置，其能够存储大量信息，高速传输数据，支持SCSI-1和SCSI-2，并且减小了装置的尺寸，特别是高度（到所谓的半高）。本发明的磁光盘记录和/或再现装置的尺寸与半高的5.25英寸磁盘记录和/或再现装置的尺寸相同，或者是宽146mm，深203mm，高41.3mm。前面板1具有设置在其上的盒插槽2和盒弹出按钮3，使得包括用于记录和再现信息的盘的盒被插入或从装置中弹出。盒插入口2具有双瓣，其设置成使得双折片的至少一部分封闭狭槽，除了当盒被插入或从装置中排出之外，防止灰尘进入盒狭槽2。根据本发明，磁光盘记录和/或再现装置可以在盘上记录1GB /侧或更高的信息，并且具有一半高度的大小。

65. 发明授权

US5371721A Method and apparatus for writing and reading a magneto-optical record carrier 失效
标题翻译：用于写入和读取磁光记录载体的方法和装置
公开(公告)号：US5371721A
公开(公告)日：1994-12-06
申请号：US998898
申请日：1992-12-28
申请人： Franciscus J. A. M. Greidanus , Johannes H. M. Spruit , Bernardus A. J. Jacobs
发明人： Franciscus J. A. M. Greidanus , Johannes H. M. Spruit , Bernardus A. J. Jacobs
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10528 , G11B11/10508 , G11B11/10513 , G11B11/10554
摘要： A method and apparatus for writing and reading information in the form of a pattern of magnetic domains in an information layer of a record carrier. An optical scanning beam is focused to a diffraction-limited radiation spot, and a magnetic field is generated by a coil supplied with an energizing current the amplitude of which is modulated by the information signal to be recorded. The magnetic field is thereby modulated, and produces magnetic domains in the information layer such that each domain has a variable number of sub-domains and consequently a variable magnetization ratio, as determined by the information signal. This permits recording at an information density exceeding that corresponding to the size of the radiation spot.
摘要翻译：一种用于在记录载体的信息层中以磁畴图案的形式写入和读取信息的方法和装置。光学扫描光束被聚焦到衍射受限的辐射光点，并且由提供有激励电流的线圈产生磁场，该激励电流的幅度由要被记录的信息信号调制。因此磁场被调制，并且在信息层中产生磁畴，使得每个域具有可变数量的子域，并且因此由信息信号确定可变磁化比。这允许以超过与辐射点的尺寸相对应的信息密度进行记录。

66. 发明授权

US5351229A Tribo-attractive contact slider for an optical read/write system 失效
标题翻译：用于光学读/写系统的摩擦吸引力接触滑块
公开(公告)号：US5351229A
公开(公告)日：1994-09-27
申请号：US814722
申请日：1991-12-24
申请人： Blasius Brezoczky , Gary M. McClelland , Hajime Seki
发明人： Blasius Brezoczky , Gary M. McClelland , Hajime Seki
IPC分类号： G11B7/12 , G11B11/10 , G11B11/105 , G11B21/21 , G11B13/04
CPC分类号： G11B11/1058 , G11B11/10554 , G11B7/122
摘要： An optical recording system in which the optical head is operated in physical contact with the surface of the optical recording medium during system operation at a selected operating speed. The optical head includes one or more optical elements mounted on a substrate which is in physical, sliding contact with the recording medium. The substrate is fabricated from a crystalline material which has a non-linear load versus friction characteristic in the negative load region. When the head is in sliding contact with the recording medium surface, a restoring force is generated which maintains the optical head in physical contact with the recording medium overcoming any lifting forces generated by the moving air layer adjacent the recording medium surface. This allows the head to be operated with a negative external load applied. Utilizing the optical head having the objective lens mounted on the substrate in close proximity to the recording medium surface allows high density recording to be achieved without the requirement of an electro-mechanical servo system to provide beam focusing for the system.
摘要翻译：一种光学记录系统，其中在所选择的操作速度的系统操作期间，光学头与光学记录介质的表面物理接触地操作。光头包括安装在基板上的一个或多个光学元件，其与记录介质物理地滑动接触。衬底由在负负荷区域具有非线性负载与摩擦特性的结晶材料制成。当头与记录介质表面滑动接触时，产生恢复力，该恢复力使光学头保持与记录介质物理接触，克服由与记录介质表面相邻的移动空气层产生的任何提升力。这允许头部施加负的外部负载来操作。利用安装在靠近记录介质表面的基板上的物镜的光头能够实现高密度记录，而不需要机电伺服系统为系统提供光束聚焦。

67. 发明授权

US5193082A Optical/magnetic composite head having magnetic and optical heads in one integrated unit 失效
标题翻译：在一个集成单元中具有磁性和光学头的光学/磁性复合头
公开(公告)号：US5193082A
公开(公告)日：1993-03-09
申请号：US502104
申请日：1990-03-29
申请人： Tomoyuki Miyake , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Tomoyuki Miyake , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B5/02 , G11B5/127 , G11B7/12 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1353 , G11B11/10532 , G11B11/10536 , G11B11/10554 , G11B7/124 , G11B11/1058 , G11B2007/13722
摘要： A photomagnetic composite head comprising a magnetic head and an optical head that are integrated into one unit, an optical waveguide path of the optical head being located in the surface of the magnetic head that faces a recording medium, and a laser beam that passes through the optical waveguide path being irradiated on a point on the recording medium where a magnetic field is impressed from the magnetic head, whereby recording can be performed under a condition in which the coercivity of the recording medium has been lowered by the laser beam, thus making it possible to achieve high density recording by using a recording medium with a high coercivity.

68. 发明授权

US5124961A Floating head for use with a recording apparatus of magneto-optical memory device 失效
标题翻译：用于与磁光存储器件的记录装置一起使用的浮动头
公开(公告)号：US5124961A
公开(公告)日：1992-06-23
申请号：US633336
申请日：1990-12-27
申请人： Shoji Yamaguchi , Akemi Murakami , Takashi Nomiyama , Kaoru Yasukawa , Daisuke Iguchi
发明人： Shoji Yamaguchi , Akemi Murakami , Takashi Nomiyama , Kaoru Yasukawa , Daisuke Iguchi
IPC分类号： G11B5/127 , G11B5/17 , G11B11/105
CPC分类号： G11B11/10532 , G11B11/10554 , G11B11/1058 , G11B5/127 , G11B5/17
摘要： A floating head for use with a recording apparatus of magneto-optical memory type comprising a floating body which is provided in the vicinity of a rotating optical recording medium and which is made afloat by an air stream created by the rotation of the recording medium, an objective lens which is fitted in an optical path forming aperture in the floating body and which permits converging light from a light source to be focused on a focusing plane of the recording medium, and a coil which is installed in the vicinity of the optical path forming aperture in the floating body and which forms a magnetic field toward the focusing plane of the recording medium. The floating body is made of a soft magnetic material and is provided with a rim made of a soft magnetic material which is formed along the peripheral edge of the optical path forming aperture on the side closer to the optical recording medium and which projects toward the same. The rim is tapered in such a way that its wall thickness decreases gradually toward the center of the optical path forming aperture.
摘要翻译：一种与磁光存储器类型的记录装置一起使用的浮动头，包括设置在旋转光记录介质附近并被由记录介质的旋转产生的空气流漂浮的浮体，物镜安装在浮动体的光路形成孔中，并且允许会聚来自光源的光聚焦在记录介质的聚焦平面上;线圈，其安装在光路形成附近并且朝向记录介质的聚焦平面形成磁场。浮体由软磁性材料制成，并且设置有由柔性磁性材料制成的边缘，沿着光路形成孔的周缘形成在靠近光记录介质的一侧的边缘，。边缘以使其壁厚朝向光路形成孔的中心逐渐减小的方式逐渐变细。

69. 发明授权

US5088074A Magnetooptical recording apparatus with parts arranged to minimize height 失效
标题翻译：磁力记录装置，零件最小化
公开(公告)号：US5088074A
公开(公告)日：1992-02-11
申请号：US666481
申请日：1991-03-06
申请人： Masatoshi Sato
发明人： Masatoshi Sato
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10554 , G11B11/10506 , G11B11/10523
摘要： A recording apparatus for recording data on a magnetooptical disk includes a rotating device for rotating the magnetooptical disk, a laser device for irradiating the magnetooptical disk, a controller for controlling the intensity of the laser beam, an initial field applying device for initializing the magnetooptical disk, and a bias field applying device for applying a bias field to an area of the magnetooptical disk. The laser device, the controller, and the field applying devices are positioned at the same side of the magnetooptical disk as the rotating device to reduce the height of the apparatus.

70. 发明授权

US5022017A Magneto optic data recording system with variable field strength, actuator therefor and method of providing 失效
标题翻译：具有可变场强的磁光数据记录系统，其执行器及其提供方法
公开(公告)号：US5022017A
公开(公告)日：1991-06-04
申请号：US284069
申请日：1988-12-14
申请人： Gerardus L. M. Jansen , Matthew W. Hecht
发明人： Gerardus L. M. Jansen , Matthew W. Hecht
IPC分类号： G11B11/10 , G11B5/02 , G11B11/105
CPC分类号： G11B11/10554 , G11B11/1056
摘要： For magneto-optic data recording, permanent magnets are used to produce a magnetic field with a variable field strength. The field strength is varied by controlled rotation of the magnets about their longitudinal axis, which also allows inversion of the direction of the magnetic field. The magnets are oriented such that their combined fields produce a resultant force continuously substantially perpendicular to the recording medium despite rotation of the magnets.
摘要翻译：对于磁光数据记录，永磁体用于产生具有可变场强的磁场。磁场强度随着磁体围绕其纵向轴线的旋转而变化，这也允许磁场方向反转。磁体被定向成使得它们的组合场产生尽管旋转磁体而基本垂直于记录介质的合力。

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