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    • 1. 发明授权
    • Physical partitioning of logically continuous bus
    • 逻辑连续总线的物理划分
    • US5550990A
    • 1996-08-27
    • US400425
    • 1995-03-03
    • Don S. KeenerAndrew B. McNeillThomas H. NewsomKevin L. ScheiernRichard W. VoorheesEdward I. Wachtel
    • Don S. KeenerAndrew B. McNeillThomas H. NewsomKevin L. ScheiernRichard W. VoorheesEdward I. Wachtel
    • G06F13/36G06F13/40
    • G06F13/4027
    • Arrangements for physically partitioning a bus having a well defined architecture as a physical entity, wherein the partitioning is logically transparent to a computer and devices which communicate through the bus and serves to avoid problems potentially arising because of the scope of actions permitted by the architecture. A typical bus architecture to which present arrangements have relevance is that associated with SCSI (Small Computer System Interface) buses. The potential problems allowed to occur architecturally involve: (a) exposures of data security/integrity; (b) excessive signal degradation due to use of signal rates which although allowed by the architecture are inappropriate for a particular bus loading environment also allowed by the architecture; (c) restrictions preventing parallel transfer of data between the computer and multiple storage devices; (d) restrictions unduly limiting the number of devices attachable to one logical bus path (one input-output channel of the computer). The disclosed arrangement partitions the bus into two or more physical entities which to the computer appears as one logical entity.
    • 用于将具有良好定义的体系结构的总线物理划分为物理实体的布置,其中分区在逻辑上对于计算机和通过总线通信的设备是透明的,并且用于避免由于架构允许的动作的范围而潜在地产生的问题。 现有安排具有相关性的典型总线架构是与SCSI(小型计算机系统接口)总线相关联的。 允许在架构上发生的潜在问题涉及:(a)数据安全/完整性的暴露; (b)由于使用信号速率引起的过多的信号衰减,尽管架构允许这种信号速率对于架构也允许的特定总线负载环境是不合适的; (c)防止计算机与多个存储设备之间的数据并行传输的限制; (d)限制不适当地限制可连接到一条逻辑总线路径(计算机的一个输入 - 输出通道)的设备数量。 所公开的布置将总线划分成两个或更多个物理实体,其将计算机显示为一个逻辑实体。