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1. 发明授权

EP0800169B1 Information reproducing method and information reproducing/recording method for magneto-optical recording medium and magneto-optical reproducing device 失效
标题翻译：再现方法和信息记录 - / - 用于磁光介质再现方法，和磁光再现装置
公开(公告)号：EP0800169B1
公开(公告)日：2003-03-19
申请号：EP96116096.7
申请日：1996-10-08
申请人： FUJITSU LIMITED
发明人： Matsuura, Michio, c/o FUJITSU LIMITED
IPC分类号： G11B7/125 , G11B11/10
CPC分类号： G11B7/126 , G11B11/10515 , G11B11/10595

2. 发明公开

EP0800169A2 Information reproducing method and information reproducing/recording method for magneto-optical recording medium and magneto-optical reproducing device 失效
标题翻译：信息技术和信息技术 - / - wiedergabeverfahrenfürmagnetooptisches介质和磁光栅Wiedergabegerät
公开(公告)号：EP0800169A2
公开(公告)日：1997-10-08
申请号：EP96116096.7
申请日：1996-10-08
申请人： FUJITSU LIMITED
发明人： Matsuura, Michio, c/o FUJITSU LIMITED
IPC分类号： G11B7/125 , G11B11/10
CPC分类号： G11B7/126 , G11B11/10515 , G11B11/10595
摘要： In the information reproducing method, the information recording/reproducing method and the information reproducing device of this invention, the start of read of information from a magneto-optical recorded area of an MSR medium is detected, and the power of a light beam to be used for reproducing magneto-optically recorded information is set in accordance with the detection. Thus, the MSR medium can be irradiated with a light beam having an appropriate reproducing power without being affected by the fluctuation in various portions of the MSR medium.
摘要翻译：在信息再现方法中，本发明的信息记录/再现方法和信息再现装置检测从MSR介质的磁光记录区读取信息的开始，光束的功率为根据检测设定用于再生磁光记录信息的信息。因此，MSR介质可以用具有适当再现功率的光束照射，而不受MSR介质的各个部分的波动的影响。

3. 发明公开

EP1069557A2 Drive circuits for magnetic heads and winding configurations of magnetic heads 审中-公开
标题翻译： TreiberschaltungfürmagnetischeKöpfeund Wicklungsanordnungen von magnetischenKöpfen
公开(公告)号：EP1069557A2
公开(公告)日：2001-01-17
申请号：EP00304204.1
申请日：2000-05-18
申请人： FUJITSU LIMITED
发明人： Matsuura, Michio, c/o FUJITSU LIMITED
IPC分类号： G11B11/105 , H03K17/66
CPC分类号： H03K17/663 , G11B5/09 , G11B11/10508 , G11B11/10534 , G11B11/10595
摘要： A drive circuit is provided for a magnetic head that has a bifilar winding with a center tap and is used for a magneto-optical disk drive. A magnetizing control signal MAGCH becomes the high level if there is no magnetic reversal during a period of a predetermined number of clocks and becomes the low level if there is a magnetic reversal. If the magnetizing control signal MAGCH is the low level, a high voltage VH is applied to the center tap of the bifilar winding 31 of the magnetic head via the transistor 39. The transistors 40, 41 or the transistors 42, 43 are turned on in accordance with write data signal DATA, *DATA. Therefore, the magnetizing current flows through one of the winding elements 31a and 31b. If the magnetizing control signal MAGCH is the high level, the transistors 46, 41 or the transistors 48, 43 are turned on in accordance with the write data signal DATA, *DATA. Therefore, the magnetizing current flows from the low voltage VL to both the winding elements 31a and 31b.
摘要翻译：为具有中心抽头的双线绕组并用于磁 - 光盘驱动器的磁头提供驱动电路。如果在预定数量的时钟周期内没有磁反转，则磁化控制信号MAGCH变为高电平，并且如果存在磁反转则变为低电平。如果磁化控制信号MAGCH为低电平，则通过晶体管39将高电压VH施加到磁头的双绞线31的中心抽头。晶体管40,41或晶体管42,43被导通根据写数据信号DATA，* DATA。因此，磁化电流流过绕组元件31a，31b之一。如果磁化控制信号MAGCH为高电平，则晶体管46,41或晶体管48,43根据写数据信号DATA，* DATA导通。因此，磁化电流从低电压VL流向绕组元件31a和31b。

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