Communications system for receiving and transmitting data cells
    12.
    发明授权
    Communications system for receiving and transmitting data cells 失效
    用于接收和发送数据信元的通信系统

    公开(公告)号:US5999528A

    公开(公告)日:1999-12-07

    申请号:US727535

    申请日:1996-10-24

    摘要: A communication system comprising a hub slot adapted to receive any one of a plurality of hub cards for receiving and transmitting data cells; a plurality of universal card slots; a plurality of interface cards insertable in any one of the plurality of universal card slots for receiving incoming ones of the data cells containing data and transmitting outgoing ones of the data cells containing data; an add bus having respective data links connected between individual ones of the universal card slots and the hub slot for receiving the outgoing ones of the data cells from the plurality of interface cards and transmitting the outgoing ones of the data cells to the hub slot; a drop bus having a single data link connected between all of the universal card slots and the hub slot for transmitting the incoming ones of the data cells from the hub slot to the plurality of interface cards; and an arrangement within each of the interface cards for filtering the incoming ones of the data cells from the drop bus and thereby routing the data cells to an appropriate one or more of the plurality of interface cards.

    摘要翻译: PCT No.PCT / CA95 / 00248 Sec。 371日期1996年10月24日第 102(e)日期1996年10月24日PCT 1995年4月28日PCT PCT。 WO95 / 30318 PCT出版物 日期1995年11月9日一种通信系统,包括适于接收多个集线器卡中的任何一个用于接收和发送数据信元的集线器槽; 多个通用卡槽; 多个接口卡可插入到所述多个通用卡插槽中的任何一个中,用于接收包含数据的数据单元的传入信息,并发送包含数据的数据单元的输出信号; 具有连接在各个通用卡槽之间的相应数据链路和用于从所述多个接口卡接收所述数据信元中的输出数据信元的所述集线器槽的添加总线,并将所述数据信元中的所述数据信元传送到所述集线器插槽; 所述总线具有连接在所有通用卡槽和所述集线器插槽之间的单个数据链路,用于将所述数据信元中的所述数据信元从所述集线器插槽传输到所述多个接口卡; 以及在每个接口卡内的布置,用于从丢弃总线中滤出输入的数据单元,从而将数据单元路由到多个接口卡中的一个或多个接口卡。

    ATM cell switch with master and slave demultiplexer modules and reduced
current fluctuations
    17.
    发明授权
    ATM cell switch with master and slave demultiplexer modules and reduced current fluctuations 失效
    ATM信元交换机具有主从分路器模块和减少的电流波动

    公开(公告)号:US5838680A

    公开(公告)日:1998-11-17

    申请号:US511890

    申请日:1995-08-07

    摘要: An ATM cell switch has a cell multiplexer connected by a shared bus to a cell demultiplexer. In a first aspect of the invention, writing of cell data in the cell multiplexer is staggered to even out current consumption. In a second aspect, the cell multiplexer has input processors enabling it to receive cell data from input ports with different data rates, and the cell demultiplexer has output processors enabling it to send cell data to output ports with different data rates. In a third aspect, the multiplexing sequence on the shared bus is periodically altered to avoid favoring any one input port. In a fourth aspect, test pattern data are placed on the shared bus to monitor bus integrity. In a fifth aspect, the cell demultiplexer is divided into master and slave demultiplexer modules, which are coupled to different, parts of the shared bus.

    摘要翻译: ATM信元交换机具有通过共享总线连接到信元解复用器的信元多路复用器。 在本发明的第一方面,单元复用器中的单元数据的写入交错以均匀地消耗电流。 在第二方面,信元多路复用器具有使得其能够以不同数据速率的输入端口接收信元数据的输入处理器,并且信元解复用器具有使其能够以不同数据速率将信元数据发送到输出端口的输出处理器。 在第三方面,共享总线上的多路复用序列被周期性地改变以避免有利于任何一个输入端口。 在第四方面,测试模式数据被放置在共享总线上以监视总线完整性。 在第五方面,信元解复用器被分为主和从解复用器模块,它们耦合到共享总线的不同部分。