Polling control system for switching units in a plural stage switching
matrix
    5.
    发明授权
    Polling control system for switching units in a plural stage switching matrix 失效
    多级切换矩阵中切换单元的轮询控制系统

    公开(公告)号:US5276445A

    公开(公告)日:1994-01-04

    申请号:US798698

    申请日:1991-11-26

    摘要: A matrix switching apparatus includes a plurality of switching units connected in tandem, each switching unit having a plurality of input terminals and a plurality of output terminals. There are a plurality of transmission/reception units, each provided within a respective switching unit and also within a remote control unit. The transmission/reception units are for transmitting switching data. A first one of the transmission/reception units is set to a master station mode and sequentially polls the remaining transmission/reception units which are set to a slave station mode. The remaining units respond to the polling by outputting switching data, which is collectively transmitted by the master station over a serial busline. The remaining transmission/reception units receive only relevant data from the switching data transmitted over the serial busline and supply the relevant data to controlling units which control the turning on and off of crosspoint switches in the switching units.

    摘要翻译: 矩阵切换装置包括多个串联连接的开关单元,每个开关单元具有多个输入端子和多个输出端子。 存在多个发送/接收单元,每个发送/接收单元设置在相应的开关单元内并且还设置在远程控制单元内。 发送/接收单元用于发送切换数据。 发送/接收单元中的第一个被设置为主站模式,并且顺序地轮询设置为从站模式的剩余发送/接收单元。 其余单元通过输出由主站通过串行总线传输的切换数据来响应轮询。 剩余的发送/接收单元仅接收通过串行总线发送的切换数据的相关数据,并将相关数据提供给控制交换单元中交叉点开关的导通和关断的控制单元。