Method and apparatus providing a multiport physical interface to high
speed packet networks
    91.
    发明授权
    Method and apparatus providing a multiport physical interface to high speed packet networks 失效
    向高速分组网络提供多端口物理接口的方法和装置

    公开(公告)号:US5923664A

    公开(公告)日:1999-07-13

    申请号:US824941

    申请日:1997-03-27

    CPC classification number: H04Q11/0478 H04L2012/5615

    Abstract: The invention discloses a method and an apparatus for implementing the physical interface in a network element connected to a packet network such as Asynchronous Transfer Mode (ATM) network. With the solution of the invention, the physical interface functions can be integrated on one chip for more than one network port. The physical interface is provided between port bit streams at media speed and word data flow transferred onto/from a bus which is under the control of the network equipment. The solution of the invention includes grouping logics and storage elements by islands of more than one port. Furthermore, the logics and storage elements for statistical counting operations can be grouped for a processing generalized to all ports. Finally, the solution of the present invention takes into account two characteristics of the physical interface which are the different rates between network link media speed and bus access rate and the technology of the high density static imbedded RAMs used for hardware integration. The Flip/Flop pointer RAMs of Flip/Flop data RAMs are duplicated and some interface RAMs are created to transfer control data between the islands and the generalized processing logical blocks.

    Abstract translation: 本发明公开了一种在连接到诸如异步传输模式(ATM)网络的分组网络的网络元件中实现物理接口的方法和装置。 通过本发明的解决方案,物理接口功能可以集成在多个网络端口的一个芯片上。 在媒体速度的端口比特流之间提供物理接口,并且传输到/经由网络设备控制的总线上的字数据流。 本发明的解决方案包括通过多于一个端口的岛分组逻辑和存储元件。 此外,用于统计计数​​操作的逻辑和存储元件可以被分组用于对所有端口进行泛化。 最后,本发明的解决方案考虑了物理接口的两个特征,它们是网络链路媒体速度和总线访问速率之间的不同速率以及用于硬件集成的高密度静态嵌入RAM的技术。 翻转/翻转数据RAM的翻转/翻转指针RAM被复制,并且创建一些接口RAM以在岛和广义处理逻辑块之间传送控制数据。

    Synchronization device for performing synchronous circuit switching
functions thru an asynchronous communication node
    93.
    发明授权
    Synchronization device for performing synchronous circuit switching functions thru an asynchronous communication node 失效
    用于通过异步通信节点执行同步电路切换功能的同步装置

    公开(公告)号:US5325404A

    公开(公告)日:1994-06-28

    申请号:US836492

    申请日:1992-02-18

    CPC classification number: H04J3/062 H04Q11/04

    Abstract: In a communication node (10) which comprises switching device (24) operating under control of a clock signal of period T for exchanging information slots carried in external frames of period T' comprising n slots, with each slot comprising a x-bit data byte, between external Time Division Multiplex TDM links (12,14) attached to the communication node, a synchronization device prevents the slippage phenomena due to the asynchronies between T and T' from causing a loss of data slots by generating at the input of the switching means internal frames from the received external frames. These internal frames are synchronous with the clock signal of period T and have a format which allows the slippage to be compensated.

    Abstract translation: 在包括在周期T的时钟信号的控制下操作的交换设备(24)的通信节点(10)中,用于交换在包括n个时隙的周期T'的外部帧中携带的信息时隙,每个时隙包括x位数据字节 ,在连接到通信节点的外部时分复用TDM链路(12,14)之间,同步设备防止由于T和T'之间的异步而导致的数据时隙的丢失导致在切换的输入处产生的滑动现象 指从接收的外部帧的内部帧。 这些内部帧与周期T的时钟信号同步,并具有允许补偿滑动的格式。

    Interconnection system for the attachment of user equipments to a
communication processing unit
    96.
    发明授权
    Interconnection system for the attachment of user equipments to a communication processing unit 失效
    用于将用户设备连接到通信处理单元的互连系统

    公开(公告)号:US5119376A

    公开(公告)日:1992-06-02

    申请号:US506035

    申请日:1990-04-06

    CPC classification number: G06F13/385

    Abstract: Interconnection system for attaching a maximum number n of equipment users EU (DCE or DTE) to the line adapter (2) of a communication processing unit. The user data and control bits are carried on transmit and receive serial link 4 and 6 in data and control slot entities arranged in frame of period T, comprising one entity per user. These entities are allocated to the user equipments through multiplexing/demultiplexing circuit (10), link adapters (12-1) to (12-8) and connecting boxes (30-1) to (30-8). The user equipments are connected through active remote modules which are specific to the standardized interfaces of the user equipments. Link adapters (12-1) to (12-8) add to the data and control slot entities an outband slot which is used for exchanging control information, such as the active remote module address and type which are stored in memory (42), to be transmitted to the line adapter (2). The advantage of the interconnection system is that the attachment of the user equipments is simplified.

    Abstract translation: 用于将最多数量的设备用户EU(DCE或DTE)附加到通信处理单元的线路适配器(2)的互连系统。 用户数据和控制位在周期T的帧中布置的数据和控制时隙实体中的发送和接收串行链路4和6上承载,每个用户包括一个实体。 这些实体通过复用/解复用电路(10),链路适配器(12-1)至(12-8)和连接盒(30-1)至(30-8)分配给用户设备。 用户设备通过用户设备标准接口专用的主动远程模块连接。 链路适配器(12-1)至(12-8)向数据和控制时隙实体添加用于交换诸如存储在存储器(42)中的主动远程模块地址和类型的控制信息的外带时隙, 被传送到线路适配器(2)。 互连系统的优点是简化了用户设备的连接。

    Pseudo synchronous transport mechanism in a communication network
    97.
    发明授权
    Pseudo synchronous transport mechanism in a communication network 失效
    通信网络中的伪同步传输机制

    公开(公告)号:US4799219A

    公开(公告)日:1989-01-17

    申请号:US77484

    申请日:1987-07-24

    CPC classification number: H04L12/64

    Abstract: A pseudo synchronous mechanism is used in the nodes of a communication network for exchanging non-character coded information (NCI) and potentially character coded information on inter node links. Communication is performed in frames comprising circuit slots devoted to the transportation of character coded information. The circuit slots are assigned to circuit users on a per-call basis under control of node management apparatus. The slots are qualified by at least one qualification bit (Caq) which indicates, when set to a first value (0) that the users are momentarily active and when set to a second value (1) that the users are momentarily inactive. The node mechanism includes a store in which queues of storing positions are assigned to the circuit users attached to the node. The circuit user information to be sent on the network internode links or received from the internode links is stored in the store. The node mechanism further includes an internode adapter which controls the generation and reception of the frames to and from each internode link. The adapter operates under control of a node manager which assigns on a per-call basis, a set of at least one slot in the frames transported on the network link to each of a plurality of circuit users. The node also includes transmit and receive controls which cause the queues assigned to the plurality of local users to be sequentially scanned and read from or written to according to whether the qualification bits are set to a first value.

    Address generating device for a communication line scanning device
    98.
    发明授权
    Address generating device for a communication line scanning device 失效
    通信线扫描装置的地址产生装置

    公开(公告)号:US4491913A

    公开(公告)日:1985-01-01

    申请号:US433744

    申请日:1982-10-12

    CPC classification number: G06F13/385 G06F13/22

    Abstract: The address generating device is provided for a communication line scanning device. The lines are connected to the scanning device through n line interface circuits, n varying in accordance with the network configuration. Each interface circuit can be connected to a various number of lines, for instance one line or k lines in a preferred embodiment, and comprises means for providing to the address generating device, a presence indicating signal indicating that it is plugged and a signal indicating the number of the lines connected thereto. A first logic circuit receives the presence indicating signals as inputs and generates on its outputs the address bits of the last present interface circuit to be scanned. A first counter able to count in binary mode up to n-1 is incremented by an increment pulse provided by a clock on each period assigned to the scanning of a line. This counter outputs the address bits of the successive interface circuits. A comparator compares the address bits so generated and the address bits of the last present interface circuit to be scanned and outputs a reset signal when these bits are equal.

    Abstract translation: 为通信线扫描装置提供地址产生装置。 线路通过n线接口电路连接到扫描设备,n根据网络配置而变化。 每个接口电路可以连接到各种数量的线路,例如在优选实施例中的一条线路或k条线路,并且包括用于向地址生成设备提供指示其被插入的存在指示信号的装置和指示其的信号 与其连接的线数。 第一逻辑电路接收存在指示信号作为输入,并在其输出上产生要扫描的最后一个当前接口电路的地址位。 能够以二进制模式计数直到n-1的第一个计数器由分配给扫描行的每个周期上的时钟提供的增量脉冲递增。 该计数器输出连续接口电路的地址位。 一个比较器比较这样产生的地址位和最后一个当前接口电路的地址位,并在这些位相等时输出一个复位信号。

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