Data compression communication method between a main control unit and terminals
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorHayao Hirai
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Abstract
The decimal numbers in ASCII code are converted into base n number codes, where the base n is greater than ten, and then are transmitted between the main control unit and the terminals including servo systems and spindle systems in an automated factory system. The data is thus compressed, and greater number of axes of the numerically controlled devices, etc., can be controlled within a predetermined time length for transmitting the data.
Claims22
A method for transmitting electrical data signals between information units of a control system over an electrical transmission medium, said electrical data signals representing decimal numbers corresponding to parameters of said system, comprising the steps of:
- converting decimal number parameters of said system to be transmitted, said decimal number parameters being reresented in a character representation code system as 8-bit characters, into base n numbers, where n is a whole number greater than 10;
- converting said base n numbers into binary byte codes of an alphanumeric character representation code system;
- transmitting said binary byte codes over said electrical transmission medium;
- receiving said transmitted binary byte codes from said electrical transmission medium;
- converting received binary byte codes of said character representation code system into received base n numbers;
- and
- converting said received base n numbers into said decimal numbers, such that the amount of decimal number data to be transmitted over said electrical transmission medium is reduced as compared with transmission of said 8-bit character representation code.
Dependencies are inferred from the claim text.