Data processing system and method for accessing a common data me

Electrical computers and digital processing systems: processing – Processing architecture – Microprocessor or multichip or multimodule processor having...

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712 34, 711151, G06P 1516

Patent

active

059251212

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to a system and a method respectively for processing of data. The invention in particular relates to such a system for controlling for example real-time systems wherein the requirements on execution efficiency etc. are high since various high-capacity demanding functions have to meet real-time demands etc. In for example centrally controlled real-time systems of different kinds the system capacity for carrying out assigned functions is given by the execution efficiency of the central processor system.
The invention also relates to a communications system with such a system for data processing.


STATE OF THE ART

Numerous alternatives are known through which is intended to increase the efficiency in a system for a processing of data, for example used for real-time controlling or in general for systems wherein the requirements are high as to execution efficiency due to various capacity requiring functions. In order to achieve an increased efficiency it is among others known to provide such a system architecture that it enables a sharing of the total system load between different processors in the form of load and function sharing respectively. By so called pre-processing given regional control functions are carried out using regional processors and regional memories arranged in associated function blocks. A central processor then commands the execution of the functions and receives the results thereof.
The regional processors and the central processor each control their specified function handling. Thus a system is obtained which has a constant control load distribution. Such a system is in principle a one-processor system wherein the central processor controls function blocks comprising regional processors. In such a system the interprocessor-cooperation between the function blocks and the central processor must be well defined by the latter. Another known system for load sharing generally denoted multiprocessing comprises at least two central processors. These together access the data memories of the establishment and different computer configurations and control load distributions can be obtained for different operational periods. Through this processor redundancy a dynamical adaption to instantaneous traffic handling situations is enabled.
For both these kinds of systems interprocessor communication and processor cooperation is required which results in loads on the systems etc.
One known way of increasing the efficiency of a centrally controlled real-time system in which the system capacity is given by the execution efficiency of the central computer system is to execute in parallel executions through table controlled execution.
A highly demanding real-time system is for example a telecommunications system.
In U.S. Pat. No. 3,969,701 table execution is applied. Variables associated with a function block are translated with the use of tables from variable number to memory pointer values or address numbers in the memory operations in storing arrangements belonging to the respective block.
In U.S. Pat. No. 4,354,231 the use of tables is described. In this case cache-memories are used which actually can be seen as fast memories. In principle this only results in minor time savings and it is in no way possible to obtain the increase in efficiency which is desired in centrally controlled real-time systems.


SUMMARY OF THE INVENTION

One object of the present invention is to provide a system and a method respectively for processing of data wherein table control execution is used and through which a high efficiency can be achieved. Particularly it is an object of the invention to provide a system for controlling centrally controlled real-time systems in which a very high execution efficiency can be achieved.
One particular object of the present invention is to provide a system through which the system capacity of a function block oriented central processor system can be increased through the use of parallel executions of functions with the use of table execution.

REFERENCES:
patent: 3969701 (1976-07-01), Hemdal
patent: 4891787 (1990-01-01), Gifford
patent: 5404515 (1995-04-01), Chasse et al.
patent: 5517656 (1996-05-01), Shi
patent: 5561809 (1996-10-01), Elko et al.
patent: 5613068 (1997-03-01), Gregg et al.

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