Video display driver apparatus
    3.
    发明公开
    Video display driver apparatus 失效
    TreiberstufefürBildwiedergabegeräte。

    公开(公告)号:EP0335607A1

    公开(公告)日:1989-10-04

    申请号:EP89302933.0

    申请日:1989-03-23

    IPC分类号: H04N5/68 H03F1/48

    CPC分类号: H03F1/48 H03F3/19 H04N5/148

    摘要: A video signal is coupled from the output of a display driver amplifier (20) to an image display device (35) via a coupling network (26) including cascaded emitter follower transistors (41,42) of opposite conductivity type. First (43) and second (44) diodes are respectively connected across the base-emitter junctions of each transistor and are poled for forward current conduction in a direction opposite to that of the associated base-emitter junction. The coupling network significantly reduces the value of capacitance of the display device as presented to the output of the driver amplifier, thereby improving positive and negative video signal transient response.

    摘要翻译: 视频信号通过包括具有相反导电类型的级联射极跟随器晶体管(41,42)的耦合网络(26)从显示驱动器放大器(20)的输出耦合到图像显示装置(35)。 第一(43)和第二(44)二极管分别连接在每个晶体管的基极 - 发射极结之间,并且在与相关联的基极 - 发射极结的方向相反的方向上极化正向电流传导。 耦合网络显着降低显示器件的电容值,如驱动器放大器的输出所示,从而改善正负视频信号瞬态响应。