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。

公开(公告)号：EP0175409B1

公开(公告)日：1989-05-10

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

公开(公告)号：EP0293990A1

公开(公告)日：1988-12-07

申请号：EP88201083.8

申请日：1988-05-31

申请人： Philips Electronics N.V.

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

IPC分类号： H04N3/30

CPC分类号： H04N3/30

摘要： A picture display device for displaying a picture by means of a line raster consisting of a plurality of lines which are successively scanned in the opposite direction comprises a video signal processing circuit for receiving an incoming video signal comprising video information and synchronising signals and for supplying the video information of a line in one direction and the video information of the subsequent line in the opposite direction, and a line deflection circuit (H) for generating a line deflection current through a line deflection coil (1). To minimise the power which is dissipated in the line deflection circuit, this circuit constitutes a self-­oscillating stage with its natural frequency which is determined by a resonant network (1, 2) comprising the line deflection coil and which is independent of the frequency of the line synchronising signal in the incoming video signal.

摘要翻译： 用于通过由相反方向连续扫描的多条线组成的线条光栅来显示图像的图像显示装置包括：视频信号处理电路，用于接收包括视频信息和同步信号的输入视频信号， 在一个方向上的行的视频信息和相反方向上的后续行的视频信息，以及用于产生通过行偏转线圈（1）的线偏转电流的线偏转电路（H）。 为了最小化在线路偏转电路中耗散的功率，该电路构成其自然振荡级，其自然频率由包括线偏转线圈的谐振网络（1,2）确定，并且独立于 输入视频信号中的线路同步信号。