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    • 37. 发明申请
    • Apparatus for and method of recording image
    • 记录图像的装置和方法
    • US20070224527A1
    • 2007-09-27
    • US11723578
    • 2007-03-21
    • Hideaki OgawaHiroshi OkamotoKeisuke HirayamaYuji KurokawaHiroyuki FujisawaIchiro Watanabe
    • Hideaki OgawaHiroshi OkamotoKeisuke HirayamaYuji KurokawaHiroyuki FujisawaIchiro Watanabe
    • G03C5/00
    • B41J2/45
    • An image recording apparatus (1) causes a recording head (20) to move through a distance corresponding to one half of the recording width of the recording head (20) in a sub-scanning direction each time a recording drum (10) makes one rotation. This, light emitting devices (23, 24) record two line data in advance, and thereafter following light emitting devices (21, 22) record the same line data repeatedly at the same position. This increases the energy of laser light beams given to a recording position on a printing plate (P) to accomplish the recording of an image with reliability. The recording speed is not extremely decreased because not all light emitting devices (21 to 24) are used to make the repeated recordings at the same position on the printing plate (P). Further, the construction of optical systems and driving systems in the image recording apparatus is not complicated.
    • 图像记录装置(1)使得记录头(20)在每次记录鼓(10)形成一个时,在副扫描方向上使记录头(20)相对于记录头(20)的记录宽度的一半的距离移动 回转。 这样,发光装置(23,24)预先记录两行数据,之后,发光装置(21,22)在同一位置重复记录同一行数据。 这增加了赋予印版(P)上的记录位置的激光束的能量,从而可靠地完成图像的记录。 由于不是所有的发光装置(21〜24)用于在印版(P)上的同一位置进行重复记录,因此记录速度不会极度降低。 此外,图像记录装置中的光学系统和驱动系统的构造并不复杂。
    • 38. 发明授权
    • Disk apparatus and track following control method
    • 磁盘设备跟踪跟踪控制方法
    • US06721247B2
    • 2004-04-13
    • US09899434
    • 2001-07-05
    • Ichiro Watanabe
    • Ichiro Watanabe
    • G11B700
    • G11B5/59627G11B7/0945G11B7/0953G11B11/10576
    • A disk apparatus has a head, a positional signal detection section that detects a track of a medium, a feedback control section which computes a control signal for moving the head from the location of a positional signal generated by a position signal detector, and a learning control section which generates and stores an unknown function for one disk rotation, which includes a periodic disturbance, in a memory which is comprised of N number of memory cells by a learning algorithm as an approximate function which is approximated by the height of each of several blocks in the medium. The learning control section reads the learning result of the two memory cells at locations which are moved forward for a predetermined amount of time, and interpolates the results so as to generate a periodic disturbance compensation signal.
    • 磁盘装置具有头部,位置信号检测部分,其检测介质的轨道;反馈控制部分,其从位置信号检测器产生的位置信号的位置计算用于移动头部的控制信号;以及学习 控制部分,其通过学习算法生成并存储包括周期性干扰的未知功能,该存储器由N个存储器单元组成,作为近似函数,其近似于几个 在媒体中的块。 学习控制部分在向前移动预定时间量的位置处读取两个存储单元的学习结果,并且内插该结果以产生周期性的干扰补偿信号。
    • 39. 发明授权
    • Storage apparatus
    • 储存装置
    • US06628579B2
    • 2003-09-30
    • US09454627
    • 1999-12-06
    • Ichiro WatanabeTakayuki Kawabe
    • Ichiro WatanabeTakayuki Kawabe
    • G11B700
    • G11B7/095G11B5/59627G11B21/106
    • A learning control unit is provided between a feedback calculating unit and a driving unit. When a period for one medium rotation period is assumed to be TL, an unknown drive current function Irepeat(t) which repeats for a period of time from a start time t=0 for one medium rotation period to an end time t=TL is obtained by a learning algorithm as an approximated function I{circumflex over ( )}repeat(t) that is approximately presumed by a set of the heights Ci of N rectangular functions having interval numbers i=0˜ (N−1) whose time widths are obtained by dividing the period for one medium rotation period into N intervals. After the learning, a learning control signal I{circumflex over ( )}repeat is outputted synchronously with the medium rotation and a feed-forward control is performed. The learning control unit can be provided between a position signal detecting unit and a feedback calculating unit and can learn a position function TESrepeat(t) as an approximated function TES{circumflex over ( )}repeat(t) in a similar manner.
    • 学习控制单元设置在反馈计算单元和驱动单元之间。 当一个中等旋转周期的周期被假设为TL时,从一个中间旋转周期到结束时间t = TL的开始时间t = 0重复一段时间的未知驱动电流函数Irepeat(t)是 通过学习算法获得的近似函数I repeat(t),其近似假设为具有间隔数为i = 0〜(N-1)的N个矩形函数的高度Ci的集合,其中时间宽度是通过将周期 对于一个中等旋转周期到N个间隔。 在学习之后,与介质旋转同步地输出学习控制信号I repeat,并且执行前馈控制。 学习控制单元可以设置在位置信号检测单元和反馈计算单元之间,并且可以以类似的方式学习位置函数TESrepeat(t)作为近似函数TES repeat(t)。