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    • 1. 发明申请
    • 磁気記録方法及び装置並びにこれに用いる磁気記録媒体
    • 磁记录和磁记录介质的使用方法和装置
    • WO2003003352A1
    • 2003-01-09
    • PCT/JP2001/005579
    • 2001-06-28
    • 富士通株式会社杉本利夫
    • 杉本利夫
    • G11B5/02
    • G11B5/66G11B5/02G11B11/10573G11B11/10578G11B11/10584G11B2005/0002G11B2005/0021
    • A method for recording magnetic information on the recording layer of a magnetic recording medium by means of a magnetic head while heating the recording layer with light shone from an optical head, comprising a first step of moving the magnetic head to a desired position on the magnetic recording medium having a magnetic layer for positioning the optical head, a second step of supplying a field Hr for positioning the optical head from the magnetic head to the magnetic layer for positioning, and a third step of outputting a light Pr for positioning the optical head therefrom to generate a magnetooptic effect between the optical head and the magnetic layer for positioning magnetized by the positioning field Hr and controlling the optical head to face the position of the magnetic head based on a detection value of magnetooptic effect.
    • 一种通过磁头在磁记录介质的记录层上记录磁信息的方法,同时用光头照射光学头加热记录层,包括将磁头移动到磁性的所需位置的第一步骤 具有用于定位光学头的磁性层的记录介质,第二步骤,将用于将光学头从磁头定位的磁场Hr提供到用于定位的磁性层;以及第三步骤,输出用于定位光学头的光Pr 以在光头和磁层之间产生磁光效应,用于通过定位场Hr磁化的定位,并基于磁光效应的检测值控制光头与磁头的位置相对。
    • 4. 发明申请
    • 光ディスク記録再生装置
    • 光盘记录/再现设备
    • WO2003060902A1
    • 2003-07-24
    • PCT/JP2003/000033
    • 2003-01-07
    • 松下電器産業株式会社髙嶋 誠
    • 髙嶋 誠
    • G11B11/105
    • G11B11/10508G11B11/10534G11B11/10573G11B11/10576G11B11/10595
    • A moved distance detecting means (15) detects the moved distance in a tracking direction of an object lens, a position signal generating means (60) generates a position signal corresponding to the position of the object lens based on the detection, and a drive signal modulating means (40) modulates the drive current of a magnetic head (20) according to this position signal. Therefore, a drive current can be controlled according to the moved distance of the object lens to enable the magnetic head to be driven with a small current when a moved distance is small and with a large current according to a moved distance only when it is large, whereby it is possible to reduce an average drive current and hence reduce power consumption as a whole.
    • 移动距离检测装置(15)检测物镜的跟踪方向上的移动距离,位置信号发生装置(60)根据检测产生对应于物镜的位置的位置信号,以及驱动信号 调制装置(40)根据该位置信号调制磁头(20)的驱动电流。 因此,可以根据物镜的移动距离来控制驱动电流,使得当移动距离小时能够以小电流驱动磁头,并且只有当大的电流大时才根据移动的距离使用大电流 ,从而可以降低平均驱动电流,从而整体上降低功耗。
    • 5. 发明申请
    • MAGNETO-OPTIC DISK DEVICE AND METHOD OF POSITIONING MAGNETIC HEAD OF THE DEVICE
    • 磁光盘装置及其装置的磁头定位方法
    • WO01099102A1
    • 2001-12-27
    • PCT/JP2001/004825
    • 2001-06-07
    • G11B5/02G11B11/105
    • G11B11/10558G11B11/1055G11B11/10552G11B11/10573
    • A magneto-optic disk device and a method of positioning the magnetic head of the device capable of increasing the positioning accuracy of the magnetic head, particularly, in the tangential direction of a magnetic disk; the magneto-optic disk device, comprising a pickup (12) having an objective lens (10) disposed thereon and linked with a head arm (14) having the magnetic head (16) disposed thereon and a head support unit (20) allowing the head arm (14) to be moved relative to the pickup (12) so that the magnetic head (16) opposed to the objective lens (10) of the pickup (12) and disposed movably in the radial direction of the disk, wherein a screw hole (22) for mounting the head arm (14) is provided in the pickup (12), elongated holes (24) are provided in the head arm (14) opposedly to the screw hole (22) of the pickup (12) and parallel with the tangential direction of the disk, screws (26) fitted slidably to the elongated holes (24) of the head arm (14) and having tips threaded with the screw holes (22) are disposed, and an elastic member (30) pressing the head arm (14) against the pickup (12) is disposed between the screws (26) and the head arm (14).
    • 一种磁光盘装置和该装置的磁头的定位方法能够提高磁头的定位精度,特别是在磁盘的切线方向上。 所述磁光盘装置包括具有设置在其上并与其上设置有磁头(16)的头臂(14)连接的物镜(10)的拾取器(12),以及允许 头臂(14)相对于拾取器(12)移动,使得与拾取器(12)的物镜(10)相对并且沿盘的径向方向可移动地设置的磁头(16),其中 用于安装头臂(14)的螺钉孔(22)设置在拾取器(12)中,在头臂(14)中设置有与拾取器(12)的螺钉孔(22)相对的长孔(24) 并且平行于盘的切线方向,设置有可滑动地装配到头臂(14)的长孔(24)并且具有与螺纹孔(22)螺纹连接的尖端的螺钉(26),并且弹性构件 )将头臂(14)压靠在拾取器(12)上,设置在螺钉(26)和头臂(14)之间。