Method and system for distributing data in a real time data imaging
network
    2.
    发明授权
    Method and system for distributing data in a real time data imaging network 失效
    在实时数据成像网络中分发数据的方法和系统

    公开(公告)号:US5864680A

    公开(公告)日:1999-01-26

    申请号:US869473

    申请日:1997-06-05

    CPC分类号: H04L12/18

    摘要: A computer network system repetitively distributes messages including uniquely identified blocks of real time data containing a current data image over a broadcast communications network to all real time stations for storage of each repetition of each entire block of data directly in station memory at a unique address space assigned to that uniquely identified block of data. The real time stations receive the blocks of data and alternatively receive other messages from the real time stations. The other messages have a recognized standard protocol, such as the TCP/IP or UDP/IP protocol of the Internet Protocol Suite.

    摘要翻译: 计算机网络系统将包含唯一标识的包含当前数据图像的实时数据的块的消息广播地分发到广播通信网络,以将所有实时站重复地分发消息,以便在唯一地址空间中直接在站存储器中存储每个整个数据块的每次重复 分配给唯一标识的数据块。 实时站接收数据块,或者从实时站接收其他消息。 其他消息具有公认的标准协议,例如因特网协议套件的TCP / IP或UDP / IP协议。

    Automatic fault detection and recovery system which provides stability
and continuity of operation in an industrial multiprocessor control
    3.
    发明授权
    Automatic fault detection and recovery system which provides stability and continuity of operation in an industrial multiprocessor control 失效
    自动故障检测和恢复系统,提供工业多处理器控制中的稳定性和连续性

    公开(公告)号:US4377000A

    公开(公告)日:1983-03-15

    申请号:US160411

    申请日:1980-06-18

    申请人: Carl J. Staab

    发明人: Carl J. Staab

    IPC分类号: G06F11/14 G06F11/20 G06F11/00

    摘要: A multiprocessor computer control system for a process includes at least two central processors and respectively associated input/output systems. Control system faults are detected and a bootstrap microprocessor is triggered into its fault detector and recovery mode. The output control signals are placed on and central processors are stopped and restarted and then it is determined which if any of them is to be inoperative. A reconfigured control system is defined with the inoperative unit(s) excluded. The microprocessor switches the input/output systems as necessary to structure the control system in reconfigured form so that process control can resume without disturbance.

    摘要翻译: 用于过程的多处理器计算机控制系统包括至少两个中央处理器和分别相关联的输入/输出系统。 检测到控制系统故障,并将引导微处理器触发到其故障检测器和恢复模式。 输出控制信号被放置在中央处理器上并重新启动,然后确定它们中的任何一个是不工作的。 定义了重新配置的控制系统,其中不包括不可用的单元。 微处理器根据需要切换输入/输出系统,以重组形式构造控制系统,以便过程控制可以无扰动地恢复。

    Synchronization of time-of-day clocks in a distributed processing
network system
    4.
    发明授权
    Synchronization of time-of-day clocks in a distributed processing network system 失效
    在分布式处理网络系统中同步时钟

    公开(公告)号:US5327468A

    公开(公告)日:1994-07-05

    申请号:US901446

    申请日:1992-06-19

    摘要: The operating system clocks in each station on a counter rotating ring network of a distributed processing system are synchronized by latching the count in a free running counter in the network interface of each station at the instant a clock message transmitted by a timekeeper station is received. The timekeeper station then calculates from its operating system time-of-day clock and its free running counter, its time of reception of the clock message, and broadcasts this timekeeper time of reception to the other stations. Each other station calculates its own time of reception from its operating system time of day, and the count in its free running counter, and uses the difference between its time of reception and the timekeeper time of reception to correct its operating system time-of-day clock. Repeater and media propagation delays determined from the dynamic topography of the network are taken into account in calculating the correction factor. The free running counter can also be used to maintain a higher resolution local time of day than is available from the operating system time-of-day clock.

    摘要翻译: 在接收到由计时器站发送的时钟消息的瞬间,通过在每个站的网络接口中的自由运行的计数器中将计数锁存在每个站中的分布式处理系统的反转环网上的每个站中的操作系统时钟。 计时站然后从其操作系统的时钟计时器及其自由运行计数器,其接收时钟消息的时间计算,并将该计时器的接收时间广播到其他站。 每个其他站从其操作系统的时间计算其自己的接收时间,以及其自由运行计数器中的计数,并且使用其接收时间与计时器接收时间之间的差异来校正其操作系统的时间 - 天钟。 在计算校正因子时,考虑了网络动态地形确定的中继器和媒体传播延迟。 还可以使用自由运行计数器来保持比当前操作系统时钟时钟更高的本地时间。