Patent
Apparatus and method for switching of data
TLDR
In this paper, the scheduling of output traffic to ports is handled by individual processors on an exclusive assignment basis, when a port is available to handle a given traffic segment (packet) destined for that port signals such availability to the processor having current responsibility over the transfer of said segment. The latter processor then executes the operations required to complete the transfer.Abstract:
Apparatus and method for carrying out data switching; e.g. at a store-and-forward exchange node in a data communication network. Plural processors operate relative to multiple ports and traffic storage queues, partially on an exclusive basis and partially on a shared basis, to effectuate switching of data traffic with balanced sharing of the aggregate processing load. The processors control traffic processing functions (reception, storage and output transfer) on a varied assignment schedule. Supervisory signals exchanged between processors indicate status and destinations of currently stored traffic loads. The scheduling of output traffic to ports is handled by individual processors on an exclusive assignment basis. When a port is available to handle a given traffic segment (packet) destined for that port the respective processor having exclusive output scheduling responsibility for that port signals such availability to the processor having current responsibility over the transfer of said segment. The latter processor then executes the operations required to complete the transfer.read more
Citations
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References
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Patent
Apparatus for interrogating the availability of a communication path to a peripheral device
TL;DR: In this paper, a computer system in which one or more processors can interrogate, on command, the input/output system to determine whether communication paths are available to the respective peripheral units is described.
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System for transferring data between central units and controlled units
TL;DR: In this paper, a system for directing orders to peripheral devices in a data processing system having duplicate central control units is described, in the event one of the central control unit loses access to a peripheral device and therefore cannot transmit orders to that peripheral device, the system enables an alternative route through the other central controller unit to the same peripheral device.
Patent
Modular multiprocessor system with recirculating priority
Hauck E A,R. Werner John +1 more
TL;DR: In this paper, a closed loop is used to allocate a priority bit to a processor in a closed-loop fashion, such that only the processor receiving the bit can utilize the common bus and circulation of the bit is interrupted by another processor utilizing the bus.
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Communication switching system
TL;DR: In this paper, a communication switching system with distributed control and modular design including a loop structure to which processor modules and storage modules are attached is presented, where messages can be sent by a processor module to any one of the storage modules for fetching or delivering of data and then the data will be routed back to the processor modules.