Improvements in or relating to data transmission systems
    2.
    发明公开
    Improvements in or relating to data transmission systems 失效
    Datenübertragungssysteme。

    公开(公告)号:EP0033591A1

    公开(公告)日:1981-08-12

    申请号:EP81300147.6

    申请日:1981-01-14

    申请人: THE POST OFFICE

    IPC分类号: H04L11/08 G06F11/32

    CPC分类号: H04M11/085 H04L43/0817

    摘要: A monitoring apparatus for monitoring the access ports of a viewdata computer comprises a microprocessor 30 and associated RAM 31. Information indicative of the condition of the access ports is fed into the RAM 31 underthe control of the microprocessor 30 via input/output latches 35 which are linked to the ports. An interface circuit 37 periodically assembles a message relating to the condition of a port as indicated by the information stored in the RAM 31 for transmission to a monitoring centre where the information can be displayed on a conventional viewdata terminal

    摘要翻译: 用于监视观看数据计算机的访问端口的监视装置包括微处理器30和相关联的RAM 31.表示访问端口状态的信息经由输入/输出锁存器35在微处理器30的控制下被馈送到RAM 31中, 链接到端口。 接口电路37周期性地组装与由存储在RAM31中的信息所指示的端口条件有关的消息,以传送到监视中心,其中信息可以在常规视图数据终端上显示。