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    • 56. 发明授权
    • Reliability of crossbar switches in an information processing system
    • 交叉开关在信息处理系统中的可靠性
    • US6131169A
    • 2000-10-10
    • US460513
    • 1999-12-14
    • Koichi OkazawaToshiaki TaruiYasuyuki Okada
    • Koichi OkazawaToshiaki TaruiYasuyuki Okada
    • G06F13/36G06F11/00G06F11/20G06F15/167
    • G06F11/2005G06F11/2007
    • An information processing apparatus includes a crossbar switch having a plurality of switching circuits for data transfer; connection lines having address data transfer paths of m-bit unit connected to each of the input/output ports of the switching circuits, control signal transfer paths of m-bit unit connected to each of the input/output ports of the control circuits and back-up transfer paths of m-bit unit connected to each of the input/output ports of the back-up circuits; and transfer path processing circuit connected correspondingly to the connection lines constructed by the n-bit provided on each of the processing units, monitored transfer of data and control signal between the processing units through the switching circuit and the control circuit in the crossbar switch, and detected a failure of at least the switching circuit and the control circuit to thereby change the connection of at least one of the failed switching circuit and control circuit to a connection of the back-up circuit.
    • 一种信息处理设备,包括具有用于数据传送的多个切换电路的交叉开关; 具有连接到开关电路的每个输入/输出端口的m位单元的地址数据传送路径的连接线,连接到控制电路的每个输入/输出端口的m位单元的控制信号传送路径和后面 - 连接到备用电路的每个输入/输出端口的m位单元的传送路径; 以及传送路径处理电路,其对应于由在每个处理单元上提供的n位构成的连接线,通过开关电路和交叉开关中的控制电路在处理单元之间监视的数据传输和控制信号,以及 检测到至少开关电路和控制电路的故障,从而将故障切换电路和控制电路中的至少一个的连接改变为备用电路的连接。
    • 60. 发明授权
    • Increasing data transfer efficiency for a read operation in a non-split
transaction bus environment by substituting a write operation for the
read operation
    • 通过将读取操作替换为读取操作,在非分割事务总线环境中提高数据传输效率
    • US5754802A
    • 1998-05-19
    • US648424
    • 1996-05-15
    • Koichi OkazawaHideki OsakaKenichi Saitou
    • Koichi OkazawaHideki OsakaKenichi Saitou
    • G06F13/36G06F13/12G06F13/40G06F13/42G06F13/00
    • G06F13/423G06F13/126G06F13/4027G06F13/4036
    • A method and apparatus for increasing data transfer efficiency for a read operation in a non-split transaction bus environment by substituting a write operation for the read operation. The data transfer efficiency is increased and deadlocking is reduced by substituting two write operations (one from an I/O device to a bus controller and the other from the bus controller to the I/O device) for one read operation. Further, the present invention improves the efficiency of data transfer by maintaining the compatibility of a bus specification when DMA of an I/O bus having no split transfer function, such as a PCI bus or inter-I/O transfer, is executed. A processor instructs a data transfer operation to an I/O device or bus conversion adapter. The I/O device or bus conversion adapter connected to a bus outputs a write access, and a bus connection controller connected to the bus receives the write access and reads data in a main memory. The bus connection controller then transfers read data to the I/O device or the bus conversion adapter. Such an operation may also be performed between two I/O devices or bus conversion adapters.
    • 一种用于通过将写入操作替换为读取操作来增加在非分割事务总线环境中的读取操作的数据传输效率的方法和装置。 通过将两个写入操作(一个从I / O设备到总线控制器,另一个从总线控制器到I / O设备)替换为一次读取操作,数据传输效率提高并且死锁降低。 此外,本发明通过在不执行诸如PCI总线或I / O转移之类的分离传递功能的I / O总线的DMA执行时,通过维持总线规格的兼容性来提高数据传输的效率。 处理器指示对I / O设备或总线转换适配器的数据传输操作。 连接到总线的I / O设备或总线转换适配器输出写访问,连接到总线的总线连接控制器接收写入访问并读取主存储器中的数据。 总线连接控制器然后将读取的数据传送到I / O设备或总线转换适配器。 这样的操作也可以在两个I / O设备或总线转换适配器之间执行。