Communication bus for a multi-source/receiver data processing sy

Details Communication bus for a multi-source/receiver data processing sy Communication bus for a multi-source/receiver data processing sy

1981-04-20

1983-11-29

Springborn, Harvey E.

Boots, shoes, and leggings

G06F 300

Patent

active

044183860

ABSTRACT:
A multi-source/receiver data processing system has a communication bus of at least one transfer medium. Clock signal generators have different clock frequencies with respect to each other. To prevent sources and/or receivers having a slow clock signal generator from being excluded as rightful participants from an action concerning a communication, the system determines whether said bus is "ready" for executing an action using first and second detecting means whereby it can allocate a first and a second period of time thereto, respectively. When a source/receiver determines that this second period of time has expired, the bus is indeed ready for this source/receiver and all further source/receivers which have meanwhile determined during their first period of time that the bus in ready, so the bus can be occupied by this action.

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patent: 4153934 (1979-05-01), Sato
Gasaglia, G. F., Distributed Computing System: A Biased Review Euromicro, Oct. 1976, vol. 2, No. 4.
A Systematic Approach to the Design of Digital Bussing Structures Thurber et al., Fall Joint Computer Conference 1972.
Cobus, A Firmware Controlled Data Transmission System Sommer, Euromicro, 1976.
Expandable Microproprocessor Bus For Distributed Processing Kaplinski, Electronic Components and Applications, vol. 4, No. 4, 8/1982.
News Report on D.sup.2 B and I.sup.2 C Buses, Elcoma Marketing Communications Group Sep. 1981.

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