For example,Бобцов

METHOD OF DIAGNOSTIC SYSTEM SYNTHESIS BASED ON BOOLEAN COMPLEMENT WITH REDUCED NUMBER OF CORRECTION ELEMENTS

Annotation

Application of Boolean complement in self-checking combinational devices synthesis is consid-ered. A method is proposed for reducing the number of correction elements in the basic block diagram of the initial combinational device diagnosis system using a 1-out-of-3 constant-weight code. The method is based on conversion of only one working function and the addition of three-digit code word in the check circuit to four-digit code word for 2-out-of-4 constant-weight code. Such an approach to the construction of diagnostic system simplifies the self-checking procedure of the structure and reduces the complexity of the final device implementation. The decrease is due to the variability of the check logic structure block and relative simplicity of codes checkers for 2-out-of-4 constant-weight codes as compared to 1-out-of-3 constant-weighted codes checkers. Examples of using the described method for synthesis of self-checking combinational devices with three or more outputs are presented.

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