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    System for removing irregularities in rotation from synchronous motor
    121.
    发明授权
    System for removing irregularities in rotation from synchronous motor 失效
    从同步电机的旋转中去除不正常的系统

    公开(公告)号：US3628111A

    公开(公告)日：1971-12-14

    申请号：US3628111D

    申请日：1969-12-03

    Applicant: VICTOR COMPANY OF JAPAN

    Inventor： GOTO KUNIO

    IPC: H02P23/10 ,  H02P5/28

    CPC classification number: H02P23/10

    Abstract: An electronic control system removes any irregularities in the rotation of an electrical motor by introducing a controlled DC bias component in the armature or field windings of the motor. The DC bias level is selected to produce a magnetic field which adds to or subtracts from the magnetic field produced by alternating current used to drive the motor. This way, the motor may receive an uneven torque which exactly compensates for any irregularity in the motor and causes the motor to run smoothly and evenly.

    Color video signal correction for mechanical variations in magnetic recording system
    122.
    发明授权
    Color video signal correction for mechanical variations in magnetic recording system 失效
    用于磁记录系统中机械变化的彩色视频信号校正

    公开(公告)号：US3614305A

    公开(公告)日：1971-10-19

    申请号：US3614305D

    申请日：1969-04-22

    Applicant: VICTOR COMPANY OF JAPAN

    Inventor： HIDAKA TSUNEYOSHI ,  MORITA AKIYOSHI ,  HONJO YOSHIHIKO ,  NISHIMURA TAKASHI

    IPC: H04N9/898

    CPC classification number: H04N9/898

    Abstract: A color signal correction system for a video magnetic tape recorder removes differential frequency changes and differential phase shifts. The system comprises a trigger oscillator which oscillates in phase with a burst signal taken out of the color signal. A first means frequency modulates a color signal filtered out of the reproduced color video signal, and a second means frequency modulates the oscillation frequency of the oscillator. The output signals of the first and second frequency modulation means are mixed to produce a signal having the differential frequency removed therefrom. Control means is provided to control the natural resonant frequency of the tank circuit of the trigger oscillator, the control corresponding to the differential frequency changes and the differential phase shifts.

    Color television picture tube of the single electron gun type
    123.
    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.

    Magnetic tape speed controlling system
    124.
    发明授权
    Magnetic tape speed controlling system 失效
    磁带速度控制系统

    公开(公告)号：US3600654A

    公开(公告)日：1971-08-17

    申请号：US3600654D

    申请日：1969-08-12

    Applicant: VICTOR COMPANY OF JAPAN

    Inventor： YASUTAKE KATSUYA

    IPC: G11B15/54 ,  H01J9/22

    CPC classification number: G11B15/54

    Abstract: A system for controlling the running speed of a magnetic tape. The running speed of a magnetic tape is always controlled within a determined value by increase of reverse rotational torque of a reel motor of a tape supplying reel and back tension of the tape when the running speed of the magnetic tape exceeds the determined value during fast forwarding or rewinding of the tape.

    Magnetic tape movement-initiation system
    125.
    发明授权
    Magnetic tape movement-initiation system 失效
    磁带移动启动系统

    公开(公告)号：US3580446A

    公开(公告)日：1971-05-25

    申请号：US3580446D

    申请日：1969-08-14

    Applicant: VICTOR COMPANY OF JAPAN

    Inventor： WADA YOSHIYO ,  YASUTAKE KATSUYA ,  TERAO YOSHIKAZU

    IPC: G11B15/10 ,  G11B15/29 ,  G11B15/43

    CPC classification number: G11B15/10 ,  G11B15/29 ,  G11B15/43

    Abstract: A magnetic tape movement-initiation system which causes two magnetic tape drive means to operate such that one means is actuated with a time lag with respect to the other means. Said two magnetic tape drive means are mounted in the path of travel of a magnetic tape paid out from a supply reel and wound on a takeup reel such that one means is disposed on the supply reel side and the other means is disposed on the takeup reel side with respect to magnetic heads which are brought into contact with the magnetic tape.

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