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1. 发明授权

US4874976A Spindle motor for driving discs 失效
标题翻译：用于驱动光盘的主轴电机
公开(公告)号：US4874976A
公开(公告)日：1989-10-17
申请号：US229663
申请日：1988-08-08
申请人： Masahiro Ohsawa , Eiichi Yonezawa
发明人： Masahiro Ohsawa , Eiichi Yonezawa
IPC分类号： G11B17/028 , G11B19/20 , H02K7/14 , H02K29/00 , H02K29/08
CPC分类号： G11B19/2009 , H02K29/08 , H02K7/14 , Y10S310/03
摘要： A spindle motor for rotating magneto-optical discs that are attracted and held on a fixed position at an end of a motor driven shaft by means of a clamping rotor with internal field magnets. The spindle motor has a set of stator coils and a set of field magnets held internally mounted on the shaft side of the clamping rotor. The field magnet and stator coil sets are arranged at a regular interval in a ring around the circumference of the clamping rotor and of a shield member of the spindle motor respectively, leaving a thin gap between the stator coils and the field magnets. The saucer-like clamping rotor is made of a non-magnetic material and applied at the disc side, on which side a magneto-optical disc is charged, of the rotary shaft. The field magnets, being fitted on the face of the clamping rotor opposed to the magneto-optical disc mounted face, function both as a means for driving the clamping rotor for motor operation, and as a disc-attracting device.
摘要翻译：用于旋转磁光盘的主轴电动机，其通过具有内部磁场磁体的夹紧转子被吸引并保持在电动机从动轴的端部的固定位置。主轴电动机具有一组定子线圈和一组内部安装在夹紧转子的轴侧上的场磁体。磁场和定子线圈组分别围绕夹紧转子的圆周和主轴电动机的屏蔽构件分别布置成环，在定子线圈和场磁体之间留下薄的间隙。碟形夹紧转子由非磁性材料制成，并且在旋转轴的盘侧被施加在磁光盘的哪一侧被充电。安装在与磁光盘安装面相对的夹持转子的表面上的场磁体既用作驱动用于电动机操作的夹紧转子的装置，也用作盘式吸引装置。

2. 发明授权

US4963809A Linear step motor type driving apparatus for driving a longitudinally movable body 失效
标题翻译：用于驱动纵向移动体的直线步进马达驱动装置
公开(公告)号：US4963809A
公开(公告)日：1990-10-16
申请号：US356314
申请日：1989-05-24
申请人： Meiji Shingu , Eiichi Yonezawa , Hiroshi Fujii
发明人： Meiji Shingu , Eiichi Yonezawa , Hiroshi Fujii
IPC分类号： H02K41/03 , H02P8/00
CPC分类号： H02P8/00 , H02K41/03
摘要： A driving assembly for a horizontally-moving vertically-suspended body, for example a curtain, comprises a moving element disposed in a channel of a rail. The moving element is mounted with an electromagnet which receives either discrete pulses or continuous current for an electrical linear step motor. Coils of the electromagnet produce a magnetomotive force operable to cause a row of pole teeth of the magnet to repulse a corresponding opposed scale connected to the channel, thereby moving the moving element in the channel.
摘要翻译：用于水平移动的垂直悬挂体（例如帘幕）的驱动组件包括设置在轨道的通道中的移动元件。移动元件安装有电磁体，其接收用于电线性步进电动机的离散脉冲或连续电流。电磁体的线圈产生磁动势，其可操作以使磁体的极齿排排斥连接到通道的对应的相对标尺，从而在通道中移动移动元件。

3. 发明授权

US06747823B2 Method of demagnetizing and transferring magnetization in a magnetic recording medium, and device thereof 有权
标题翻译：磁记录介质中的磁化的去磁和磁化的方法及其装置
公开(公告)号：US06747823B2
公开(公告)日：2004-06-08
申请号：US10033181
申请日：2001-10-23
申请人： Akira Saito , Kiminori Sato , Eiichi Yonezawa
发明人： Akira Saito , Kiminori Sato , Eiichi Yonezawa
IPC分类号： G11B586
CPC分类号： G11B5/00 , G11B5/03 , G11B5/865 , G11B2005/001
摘要： A method of controlling magnetic recording in a magnetic recording medium and a control device for the same provides a symmetrical transferred signal waveform of equal magnitude with good reproducibility and performs magnetic transfer with high reliability. In performing initial magnetization prior to performing transfer magnetization, an AC magnetic field, the polarity of which changes in the perpendicular direction Y (or both in the perpendicular direction Y and parallel direction X), is applied to the recording surface of the magnetic recording layer of a magnetic recording medium, and the intensity of the AC magnetic field is gradually decreased with time, to demagnetize the entire magnetic recording layer.
摘要翻译：在磁记录介质中控制磁记录的方法及其控制装置提供具有良好再现性的相等大小的对称传送信号波形，并以高可靠性进行磁传输。在执行转移磁化之前执行初始磁化，其极性在垂直方向Y（或垂直方向Y和平行方向X两者）上的交变磁场施加到磁记录层的记录表面的磁记录介质，并且AC磁场的强度随时间逐渐减小，以使整个磁记录层退磁。

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