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141 条记录 (耗时 0.025 秒)

    Data recording medium and data recording/reproducing device with increased storage capacity
    4.
    发明授权
    Data recording medium and data recording/reproducing device with increased storage capacity 失效
    具有增加存储容量的数据记录介质和数据记录/再现装置

    公开(公告)号：US06307704B1

    公开(公告)日：2001-10-23

    申请号：US09373193

    申请日：1999-08-12

    申请人： Yuzo Seo ,  Hiroyuki Ikeda

    发明人： Yuzo Seo ,  Hiroyuki Ikeda

    IPC分类号： G11B5596

    CPC分类号： G11B5/012 ,  G11B5/4886 ,  G11B5/59633 ,  G11B5/59655 ,  G11B5/74 ,  G11B5/82 ,  G11B7/0938 ,  G11B7/24079

    摘要： A recording disk has a data area and a servo-burst area alternately arranged with each other in the circumferential direction of the disk. The servo-burst area has a servo-burst pattern having signal sections and non-signal sections arranged with a period &lgr; in the radial direction of the disk. The period &lgr; is expressed by &lgr;=2p×n/m in terms of track pitch “p” of the disk, wherein n and m are integers prime to each other provided that n/m

    摘要翻译： 记录盘具有在盘的圆周方向上彼此交替布置的数据区和伺服突发区。 伺服突发区域具有伺服突发模式，其具有在盘的径向方向上布置有周期的信号部分和非信号部分。 按照盘的轨道间距“p”表示lambd = 2pxn / m的周期，其中n和m是彼此之间的整数，只要n / m <2。

    Information recording medium and recording/reproducing method for utilizing the same
    5.
    发明授权
    Information recording medium and recording/reproducing method for utilizing the same 失效
    信息记录媒体及其利用方法

    公开(公告)号：US5943180A

    公开(公告)日：1999-08-24

    申请号：US773131

    申请日：1996-12-26

    申请人： Yuzo Seo ,  Hiroyuki Ikeda

    发明人： Yuzo Seo ,  Hiroyuki Ikeda

    IPC分类号： G11B5/584 ,  G11B21/08 ,  G11B21/10

    CPC分类号： G11B21/10 ,  G11B21/081 ,  G11B5/584

    摘要： An information recording medium and method arranges a plurality of information recording tracks in parallel to a running direction of an information recording medium and divides the tracks into a plurality of data blocks, and a servo-burst section between the data blocks. The servo-burst section has, alternately servo-burst-signal recording sections and servo-burst-signal non-recording section. The position of a recording/reproducing head is controlled by using a plurality of recording/reproducing head gaps provided in the head and detecting positional deviations of the head gaps from the centers of the information recording tracks. The deviations are detected from intensity changes of signals from the servo-burst-signal recording sections. The head position control is performed such that at least one of the two head gaps is located at a position to reproduce a signal from both of the servo-burst-signal recording section and the servo-burst-signal non-recording section simultaneously The placement of the servo-burst-signal recording/non-recording sections with respect to head gaps results in a ratio of the signals of the head gap located corresponding to the servo-burst-signal recording section with respect to the signal of the head gap located corresponding to the servo-burst-signal non-recording section as being a predetermined ratio.

    摘要翻译： 信息记录介质和方法将多个信息记录磁道与信息记录介质的运行方向并行布置，并将磁道划分成多个数据块，以及数据块之间的伺服突发部分。 伺服突发部分具有交替的伺服突发信号记录部分和伺服突发信号非记录部分。 记录/再现头的位置通过使用设置在头部中的多个记录/再现头间隙来控制，并且检测头间隙与信息记录轨道的中心的位置偏差。 根据来自伺服突发信号记录部分的信号的强度变化来检测偏差。 执行头部位置控制，使得两个头部间隙中的至少一个位于从伺服突发信号记录部分和伺服突发信号非记录部分同时再现信号的位置。放置 相对于磁头间隙的伺服突发信号记录/非记录部分的相对于伺服突发信号记录部分所对应的磁头间隙的信号相对于磁头间隙的信号的比率 对应于伺服突发信号非记录部分为预定比率。

    Method for forming a magnetic pattern in a magnetic recording medium, a magnetic pattern forming device, a magnetic recording medium and a magnetic recording device
    6.
    发明授权
    Method for forming a magnetic pattern in a magnetic recording medium, a magnetic pattern forming device, a magnetic recording medium and a magnetic recording device 失效
    在磁记录介质中形成磁图案的方法，磁图形形成装置，磁记录介质和磁记录装置

    公开(公告)号：US06744583B2

    公开(公告)日：2004-06-01

    申请号：US10212688

    申请日：2002-08-07

    申请人： Hiroyuki Ikeda ,  Yuzo Seo ,  Youji Arita

    发明人： Hiroyuki Ikeda ,  Yuzo Seo ,  Youji Arita

    IPC分类号： G11B502

    CPC分类号： B82Y10/00 ,  G11B5/59633 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  G11B5/865 ,  G11B13/045 ,  G11B2005/0021

    摘要： A method for forming a magnetic pattern by applying a first external magnetic field to a magnetic recording medium having a magnetic layer to magnetize uniformly the magnetic layer in a predetermined direction and heating locally the magnetic layer while a second external magnetic field is applied thereto, whereby the heated portion is magnetized in the direction opposite to the predetermined direction, wherein the second external magnetic field has a pulse-like magnetic field component. The method can form a fine magnetic pattern efficiently in a medium for high density recording, and a magnetic recording medium and a magnetic recording device capable of recording with high density can be provided economically in a short time.

    摘要翻译： 通过对具有磁性层的磁记录介质施加第一外部磁场以在预定方向上均匀地磁化磁性层并且在施加第二外部磁场的同时对磁性层进行加热而形成磁性图案的方法，由此 加热部分沿与预定方向相反的方向被磁化，其中第二外部磁场具有脉冲状磁场分量。该方法可以在用于高密度记录的介质中有效地形成精细磁图案，并且磁记录 能够在短时间内经济地提供能够高密度记录的磁记录装置。

    Portable computing device
    7.
    发明授权
    Portable computing device 有权

    公开(公告)号：US10664063B2

    公开(公告)日：2020-05-26

    申请号：US16452834

    申请日：2019-06-26

    申请人： Hiroyuki Ikeda

    发明人： Hiroyuki Ikeda

    IPC分类号： G06F3/023 ,  G06F3/0354 ,  G06F3/041 ,  G06F3/0481 ,  G06F3/0488

    摘要： A portable computing device includes a touch screen with a display, and a controller that causes a keyboard image and first and second command graphics to be displayed. The first and second command graphics each contain a direction-specifying area for selecting a direction of movement of a cursor that is movable within the keyboard image and a selection input area. Touch position information concerning whether the direction-specifying area or the selection input area has been touched is generated by the controller. When the direction-specifying area of the first or second command graphic is touched, the corresponding cursor is moved in one or more discrete key image units in the direction of movement indicated by a portion of direction-specifying area that was touched; when the selection input area is touched, the character of the character key image that the cursor is currently superimposed upon is displayed on the character display field.

    PORTABLE COMPUTING DEVICE
    8.
    发明申请
    PORTABLE COMPUTING DEVICE 审中-公开

    公开(公告)号：US20190377424A1

    公开(公告)日：2019-12-12

    申请号：US16452834

    申请日：2019-06-26

    申请人： Hiroyuki Ikeda

    发明人： Hiroyuki Ikeda

    IPC分类号： G06F3/023 ,  G06F3/0488 ,  G06F3/041 ,  G06F3/0354 ,  G06F3/0481

    摘要： A portable computing device includes a touch screen with a display, and a controller that causes a keyboard image and first and second command graphics to be displayed. The first and second command graphics each contain a direction-specifying area for selecting a direction of movement of a cursor that is movable within the keyboard image and a selection input area. Touch position information concerning whether the direction-specifying area or the selection input area has been touched is generated by the controller. When the direction-specifying area of the first or second command graphic is touched, the corresponding cursor is moved in one or more discrete key image units in the direction of movement indicated by a portion of direction-specifying area that was touched; when the selection input area is touched, the character of the character key image that the cursor is currently superimposed upon is displayed on the character display field.