DATA COMPRESSION SYSTEM AND METHOD

摘要

PROBLEM TO BE SOLVED: To reduce bandwidth relating to data to be transmitted, to transmit more data onto a bus, and to connect more process control units to the bus.

SOLUTION: A data compression system is used in a process control network having a plurality of process control units communicatively coupled via a bus. The data compression system has: a data compressor that is provided in at least one of the plurality of process control units and compresses unit data generated by one of the plurality of process control units to create compressed data; a transmission system that is provided in one of the plurality of process control units and transmits the compressed data to a second process control unit in the plurality of process control units via a bus; and a data compressor/decompressor that is provided in the second process control unit in the plurality of process control units and decompresses compressed data to create the decompressed data corresponding to unit data.

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