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    • 5. 发明授权
    • Magnetic recording system
    • 磁记录系统
    • US4390907A
    • 1983-06-28
    • US177721
    • 1980-08-12
    • Tatsuo Fujiwara
    • Tatsuo Fujiwara
    • G11B5/02G11B5/127G11B5/66G11B5/70G11B20/08G11B5/00G11B5/09
    • G11B5/66G11B20/08G11B5/1278G11B5/70
    • A carrier wave at a frequency higher than the frequency of an input signal to be recorded is pulse width modulated with the input signal at the pulse width modulator, and the modulated signal thus obtained is supplied to a vertical magnetization recording head. The vertical magnetization recording head is held in contact with a magnetic tape having a rectangular hysteresis characteristic, and the modulated signal is recorded by vertical magnetization recording on the magnetic tape. The signal recorded by the vertical magnetization recording is reproduced with a reproducing head having a high sensitivity reproducing characteristic with respect to the input signal component of the pulse width modulation signal recorded on the recording medium and a low sensitivity characteristic with respect to the carrier wave component of the modulation signal.
    • 在高于要记录的输入信号的频率的频率的载波用脉冲宽度调制器的输入信号进行脉冲宽度调制,并且由此获得的调制信号被提供给垂直磁化记录头。 垂直磁化记录头与具有矩形滞后特性的磁带保持接触,并且通过垂直磁化记录将调制信号记录在磁带上。 通过垂直磁化记录记录的信号用相对于记录在记录介质上的脉冲宽度调制信号的输入信号分量具有高灵敏度再现特性的再现头和相对于载波分量的低灵敏度特性再现 的调制信号。
    • 7. 发明授权
    • Optical image scanner
    • 光学图像扫描仪
    • US5691825A
    • 1997-11-25
    • US707979
    • 1996-08-30
    • Tatsuo Fujiwara
    • Tatsuo Fujiwara
    • G03B27/50G03G15/04H04N1/04H04N1/10H04N1/193H04N1/00G03G15/28H01J3/14
    • H04N1/1026H04N1/1013H04N1/1056H04N1/193H04N2201/0448
    • In a two-carrier type image scanner, a first carrier (10) is moved in parallel to a document surface at a scanning speed and a second carrier (20) is moved at half the scanning speed, the image scanner optically reading out image information such as figures and characters on the document surface using an optical system mounted on the two carriers. To permit the adjustment of the carrier in the roll direction to be easily conducted, one side of each of the carriers (10, 20) is movably engaged with a fixed guide shaft (46), and the other side is guided by a bearing (53) which rolls on a fixed guide rail (47) disposed in parallel with the guide shaft (46), wherein the carrier is capable of being adjusted in the roll direction with respect to the guide shaft (46) when a position of the bearing (53) with respect to the carrier is adjusted.
    • 在双载波型图像扫描仪中,第一载体(10)以扫描速度平行移动到文件表面,并且第二载体(20)以扫描速度的一半移动,图像扫描仪光学地读出图像信息 例如使用安装在两个载体上的光学系统的文档表面上的图形和字符。 为了允许托架在滚动方向上的调节容易进行,每个托架(10,20)的一侧与固定的导向轴(46)可移动地接合,另一侧由轴承 53),其在与所述引导轴(46)平行设置的固定导轨(47)上滚动,其中所述载体能够相对于所述引导轴(46)在所述滚动方向上被调节, (53)相对于所述载体被调整。
    • 10. 发明授权
    • Optical image scanner
    • 光学图像扫描仪
    • US5592308A
    • 1997-01-07
    • US265029
    • 1994-06-24
    • Tatsuo Fujiwara
    • Tatsuo Fujiwara
    • G03B27/50G03G15/04H04N1/04H04N1/10H04N1/193H04N1/00G03G15/28H01J3/14
    • H04N1/1026H04N1/1013H04N1/1056H04N1/193H04N2201/0448
    • In a two-carrier type image scanner, a first carrier (10) is moved in parallel to a document surface at a scanning speed and a second carrier (20) is moved at half the scanning speed, the image scanner optically reading out image information such as figures and characters on the document surface using an optical system mounted on the two carriers. To permit the adjustment of the carrier in the roll direction to be easily conducted, one side of each of the carriers (10, 20) is movably engaged with a fixed guide shaft (46), and the other side is guided by a bearing (53) which rolls on a fixed guide rail (47) disposed in parallel with the guide shaft (46), wherein the carrier is capable of being adjusted in the roll direction with respect to the guide shall (46) when a position of the bearing (53) with respect to the carrier is adjusted.
    • 在双载波型图像扫描仪中,第一载体(10)以扫描速度平行移动到文件表面,并且第二载体(20)以扫描速度的一半移动,图像扫描仪光学地读出图像信息 例如使用安装在两个载体上的光学系统的文档表面上的图形和字符。 为了允许托架在滚动方向上的调节容易进行,每个托架(10,20)的一侧与固定的导向轴(46)可移动地接合,另一侧由轴承 53),其在与所述引导轴(46)平行布置的固定导轨(47)上滚动,其中所述载体能够相对于所述引导件在卷筒方向上被调节(46),当所述轴承 (53)相对于所述载体被调整。