Protocol and apparatus for selectively scanning a plurality of lines
connected to a communication device
    1.
    发明授权
    Protocol and apparatus for selectively scanning a plurality of lines connected to a communication device 失效
    用于选择性地扫描连接到通信设备的多条线路的协议和设备

    公开(公告)号:US5023867A

    公开(公告)日:1991-06-11

    申请号:US299865

    申请日:1989-01-19

    摘要: A scanning protocol is provided for the scanning of a plurality of serial transmission lines connecting users' devices to the scanning means of a communication device, said lines being coupled to the scanning means through line interface couplers (LICs) having each a wired address (n,n', . . . ) known to the scanning means. This scanning protocol requires that for each LIC configuration, a given LICn having a wired address n be re-addressable with a logical address n' corresponding to the wired address of any other active LICn'. This is done in order to determine, for said LIC configuration, the shortest possible scanning scheme including all the active LICs. The re-addressing of a LICn of wired address n, with a logical address n', includes the steps of: resetting the LICn to be affected a logical address n'; setting the logical address n' into LICn; locking said logical address n' into said LICn, and enabling the lines (26) connected to LICn re-addressed with logical address n'.

    摘要翻译: 提供扫描协议用于扫描将用户设备连接到通信设备的扫描装置的多个串行传输线,所述线路通过具有每个有线地址(n)的线路接口耦合器(LIC)耦合到扫描装置 ,n',...)。 该扫描协议要求对于每个LIC配置,具有有线地址n的给定LICn可以与对应于任何其他活动LICn'的有线地址的逻辑地址n'重新寻址。 这样做是为了对于所述LIC配置来确定包括所有活动LIC的最短扫描方案。 利用逻辑地址n'重新寻址有线地址n的LICn包括以下步骤:重置要影响逻辑地址n'的LICn; 将逻辑地址n'设置为LICn; 将所述逻辑地址n'锁定到所述LICn中,并且使得利用逻辑地址n'重新寻址连接到LICn的线路(26)。

    Scanner interface for the line adapters of a communication controller
    2.
    发明授权
    Scanner interface for the line adapters of a communication controller 失效
    扫描仪界面,用于通信控制器的线路适配器

    公开(公告)号:US5010548A

    公开(公告)日:1991-04-23

    申请号:US297730

    申请日:1989-01-17

    IPC分类号: G06F13/22 G06F13/38

    CPC分类号: G06F13/225 G06F13/385

    摘要: A line-adapter of a communications controller includes, for scanning the teleprocessing lines connected to it, cyclic scanning means FES exchanging information with the lines through a serial bidirectional link on which data and control informations are partitioned into frames and slots. Since both the FES and the serial link work with their own timings, an interface FESA is provided to adapt the FES scanning to the serial link structure. This FESA includes temporary storage means for storing on the one hand, data and control information transmitted from the LICs to the FES (10) through the inbound serial link, and on the other hand, data and control information transmitted from the FES to the LICs through the outbound serial link. The access of the FES, the outbound and inbound serial link to the storage means is time-shared and granted by an arbitration logic, according to the relative priorities of operation of said elements within the line-adapter of the communications controller.

    Address generating device for a communication line scanning device
    3.
    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分类号: G06F13/385 G06F13/22

    摘要: 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.

    摘要翻译: 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。