G - Physics – 06 – F
Patent
G - Physics
06
F
354/234
G06F 13/18 (2006.01) G06F 15/16 (2006.01)
Patent
CA 1280828
ABSTRACT OF THE DISCLOSURE In a multi-processor system in which a plurality of microprocessor systems are allocated to a common multi-processor bus in cyclical fashion in a sequence prescribed by priority characterizing numbers assigned to said systems, the priority allocation of bus access is overlaid by a further method that coordinates the access of a microprocessor system to a region storing a common data base in a common memory. One of the microprocessor systems functions as the main processor system and is authorized to up-date the data base and all other microprocessor systems function as subsidiary processors which can read the data base information. Before its access, every microprocessor system accessing the data base communicates a status signal to the other micro-processor systems, this preventing the main processor system from up-dating the data base while one of the subsidiary processor systems is already reading the data base information.
533398
Kosler Wolfgang
Paulmichl Erich
Pfeiffer Klaus
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
Kosler Wolfgang
Paulmichl Erich
Pfeiffer Klaus
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