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4 条记录 (耗时 0.01 秒)

    Picture pick-up or display device, respectively, comprising a line deflection circuit
    1.
    发明公开
    Picture pick-up or display device, respectively, comprising a line deflection circuit 失效
    Bildaufzeichnungs- beziehungsweiseBildwiedergabegerätmit Zeilenablenkschaltung。

    公开(公告)号：EP0175409A1

    公开(公告)日：1986-03-26

    申请号：EP85201372.1

    申请日：1985-08-30

    申请人： Philips Electronics N.V.

    发明人： Kraus, Uwe Erich ,  Boudewijns, Arnoldus Johannes Juliana ,  Boon, Cornelis Alexander Maria ,  Frensch, Adrianus Johannes

    IPC分类号： H04N3/30 ,  G09G1/04

    CPC分类号： G09G1/04 ,  H04N3/30

    摘要： A picture pick-up or display device, respectively for recording a scene or displaying a scene image, respectively with the aid of a line raster formed by a plurality of horizontal lines which are consecutively scanned in opposite directions. The device comprises a line deflection circuit (1-4) in which the line deflection coil (1) forms part of a resonant circuit whose tuning frequency is substantially equal to half the line frequency, as a result of which the power dissipation is kept low. By means of a control circuit (7-13) it is ensured that corresponding points of scanned lines are accurately in line in the vertical direction, the control circuit being arranged for causing a zero-crossing of the line deflection current and a signal which is characteristic of half the video information of a line substantially to coincide. The control circuit comprises an analogue delay element (9) for setting the time position of this signal.

    摘要翻译： 分别借助于在相反方向上连续扫描的多条水平线形成的线条光栅分别记录场景或显示场景图像的图像拾取或显示装置。 该装置包括线偏转电路，其中线偏转线圈形成谐振电路的一部分，其谐振电路的调谐频率基本上等于线路频率的一半，结果功率损耗保持较低。 通过控制电路，确保扫描线的对应点在垂直方向上准确地成行，该控制电路被布置成引起线偏转电流的过零点和视频一半特征的信号 一条线的信息基本上一致。 控制电路包括用于设定该信号的时间位置的模拟延迟元件。

    Picture display device including a field number conversion circuit
    4.
    发明公开
    Picture display device including a field number conversion circuit 失效
    具有电路用于转换的字段的数量图像再现装置。

    公开(公告)号：EP0287168A1

    公开(公告)日：1988-10-19

    申请号：EP88200687.7

    申请日：1988-04-11

    申请人： Philips Electronics N.V.

    发明人： Kraus, Uwe Erich

    IPC分类号： H04N7/01

    CPC分类号： H04N7/0105 ,  H04N5/06 ,  Y10S348/91

    摘要： Picture display device including a field number conversion circuit provided with a synchronising signal conversion circuit (4) in which the number of half lines in a field of a television signal to be converted is counted by means of a counter (57). This number is passed on to a further counter (41) which counts at a rate which is different from that of the first-mentioned counter. The ratio between the counting rates of the counters is assumed to be equal to the ratio between the field numbers of a converted television signal and the television signal to be converted. Also in the case of possible deviations of the television signal to be converted from a standard signal, the further counter (41) places vertical synchronising signals (V2) at the correct locations in the converted television signal.

    摘要翻译： 图像显示装置，包括设置有其中将被转换的辅助线在电视信号的一个场的数目由计数器（57）的方式计数的同步伊辛信号转换电路（4）一个字段数转换电路。 这个数字被传递给其以速度这一切都不同于做的第一个提到的计数器计数另外的反（41）。 计数器的计数率之间的比率被假定为等于待转换的转换后的电视信号的场数和电视信号之间的比率。 因此，在电视信号的可能的偏差的情况下，必须从一个标准的信号转换，另外的计数器（41）在所述转换后的电视信号中的正确位置放置的垂直同步信号伊辛（V2）。