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    Color television picture tube of the single electron gun type
    2.
    发明授权
    Color television picture tube of the single electron gun type 失效
    单电子枪类型的彩色电视图像管

    公开(公告)号：US3558968A

    公开(公告)日：1971-01-26

    申请号：US3558968D

    申请日：1968-07-09

    Applicant: VICTOR COMPANY OF JAPAN

    Inventor： TAKAYANAGI KENJIRO

    IPC: H01J31/20 ,  H01J29/46

    CPC classification number: B82Y10/00 ,  H01J31/201

    Abstract: A color television picture tube of the single electron gun type includes an electron gun composed of a cathode for emitting electrons, control grids disposed in the neighborhood of said cathode, a first anode, and a set of electrodes constituting an electron lens for converging the electron beams emitted from said cathode. A plurality of phosphor dots of different colors are formed on the face of the tube. A shadow mask is disposed between said phosphor dots and said electron gun. An electron beam image is formed in the interior of said electron lens. Voltages on each electrode focuses the crossover point of the electron beams on the surface of said shadow-mask. By postdeflection focusing the beam at the shadow-mask is focused on said phosphor dots in positions corresponding to a plurality of portions of said electron beam.

    Color television picture tube of the single electron gun type
    3.
    发明授权
    Color television picture tube of the single electron gun type 失效

    公开(公告)号：US3603839A

    公开(公告)日：1971-09-07

    申请号：US3603839D

    申请日：1969-06-02

    Applicant: VICTOR COMPANY OF JAPAN

    Inventor： TAKAYANAGI KENJIRO

    IPC: H01J29/50 ,  H01J31/20

    CPC classification number: B82Y10/00 ,  H01J29/503 ,  H01J31/206

    Abstract: A color television picture tube comprises a single electron gun including a plurality of cathodes arranged in a parallel relationship. A control grid is disposed near the cathodes and formed with a plurality of vertically oriented elongated slits. Each slit is disposed in a position corresponding to the positions of said cathodes. The electron beams, emitted from the electron gun, cross over and focus on a shadow mask. A postdeflection focusing of the electron beams forms an image on a phosphorescent screen. A plurality of phosphor dots on the television tube are arranged on positions in which the images are formed.

    Variable bandwidth magnetic recording system
    5.
    发明授权
    Variable bandwidth magnetic recording system 失效
    可变带宽磁记录系统

    公开(公告)号：US3567849A

    公开(公告)日：1971-03-02

    申请号：US3567849D

    申请日：1967-10-30

    Applicant: VICTOR COMPANY OF JAPAN

    Inventor： TAKAYANAGI KENJIRO ,  TANAKA TOMIYUKI ,  OTA YOSHIHIKO

    IPC: H04N5/92 ,  H04N1/28 ,  H04N5/78 ,  H04N7/12

    CPC classification number: H04N5/92

    Abstract: A variable bandwidth magnetic recording system records a modulated carrier wave which is frequency-modulated by a video signal that is to be transmitted. The transmitted frequency band can be varied in accordance with the instantaneous value of the voltage or voltages of the low frequency component of the video signal, which include a mean brightness in a horizontal scanning period or in a vertical scanning field. When the instantaneous value voltage or voltages are high, the width of the transmitted frequency band is increased. When the instantaneous value voltage or voltages are low, the width of the transmitted frequency band is reduced.

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