Apparatus and method for detecting phase deviation of a pilot subcarrier in stereophonic multiplex broadcasting
    21.
    发明授权
    Apparatus and method for detecting phase deviation of a pilot subcarrier in stereophonic multiplex broadcasting 失效
    用于检测STEREOPHONIC MULTIPLEX广播中的PILOT SUBCARRIER相位偏差的装置和方法

    公开(公告)号:US3660607A

    公开(公告)日:1972-05-02

    申请号:US3660607D

    申请日:1970-04-01

    Applicant: TESLA NP

    Inventor: MACK ZDENEK

    CPC classification number: H04H20/48

    Abstract: Method and apparatus for detecting both the magnitude and direction of any deviation in the pilot-subcarrier wave by conventionally separating the pilot carrier, regenerating and shifting its resultant signal by 90* and comparing it with a signal derived from the multiplex signal to produce a signal indicative of the magnitude of deviation. Simultaneously a reference signal is obtained from the original multiplex signal which is in phase with the comparison signal. The deviation signal and the reference signal are then demodulated to produce a directional voltage.

    Abstract translation: 通过传统分离导频载波来检测导频子载波波中的任何偏差的幅度和方向,通过将其合成信号再生并将其移位90°并将其与从多路复用信号导出的信号进行比较,以产生信号 指示偏差的大小。 同时,从与比较信号同相的原始多路复用信号获得参考信号。 然后解调偏差信号和参考信号以产生定向电压。

    Universal adaptive audiovisual teaching machine
    22.
    发明授权
    Universal adaptive audiovisual teaching machine 失效
    通用自适应音响教学机

    公开(公告)号:US3597855A

    公开(公告)日:1971-08-10

    申请号:US3597855D

    申请日:1968-09-06

    Applicant: TESLA NP

    CPC classification number: G09B5/065 G09B7/08

    Abstract: A universal adaptive audiovisual teaching device having visual display means, sound reproducing means and input means for a response by the user. A decision system is provided having a basic decision unit, a stepping unit and timing unit. The decision unit includes a control memory, a peripheral memory and a selector. The decision unit receives information from the visual, sound and response input units, evaluates and compares the response to the audio-visual units and directs movement of the audio-visual units to appropriate activating positions.

    Core holding arrangement for shuttleless coil-winding machine
    23.
    发明授权
    Core holding arrangement for shuttleless coil-winding machine 失效
    无芯卷绕机的芯架安装布置

    公开(公告)号:US3587988A

    公开(公告)日:1971-06-28

    申请号:US3587988D

    申请日:1969-05-29

    Applicant: TESLA NP

    Inventor: JAGOS FRANTISEK

    CPC classification number: H01F41/08

    Abstract: AN ANNULAR CORE FOR A TOROIDAL COIL IS HELD IN A SHUTTLELESS WINDING MACHINE BETWEEN TWO ROLLERS ROTATED ABOUT FIXED AXES AND A THIRD, IDLING ROLLER MOUNTED ON A SPRING-LOADED ARM. THE CORE IS AXIALLY SECURED ON THE PLASTIC OR RUBBERCOATED ROLLERS BY FLANGES ON THE SAME, THERE BEING AT LEAST THREE FLANGES ON EACH ROLLER, EACH FLANGE BEING ALIGNED IN A COMMON PLANE WITH CORRESPONDING FLANGES ON THE OTHER TWO ROLLERS. THE FREE OF THE CONDUCTOR BEING WOUND ON THE CORE IS LED FROM THE CORE OVER ONE OF THE ROLLERS TO A SPRING-

    LOADED CLAMP. THE SPRING TENSION ON THE ROLLER CARRYING ARM IS ADJUSTABLE, AND THE ARM MOVEMENT IS LIMITED BY A STOP.

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