COMPONENT STRUCTURE RESTRICTIONS OF TOTALLY SELF-CHECKING BUILT-IN CHECKING CIRCUITS SYNTHESIZED BY THE BOOLEAN COMPLEMENT METHOD TO THE CONSTANT-WEIGHT CODES «1-OUT-OF-3»

D.V. Efanov, V.V. Sapozhnikov, Vl.V. Sapozhnikov, D.V. Pivovarov

Èlektron. model. 2018, 41(1):27-42
https://doi.org/10.15407/emodel.41.01.027

ABSTRACT

The problem of the self-checking built-in checking circuits (concurrent error-detection systems) synthesis by the Boolean complement method of constant-weight codes is investigated. The restrictions on the structure of the components of concurrent error-detection systems are considered by the example of using the “1-out-of-3” code. It is shown that in addition to ensuring the testability of the Boolean complement and the checker in the control circuit, a testable implementation of the object of diagnosis and the check logic block are required. The conditions for ensuring totally self-checking of the concurrent error-detection system structure based on the method of Boolean complement to the “1-out-of-3” code is formulated. Examples illustrating the problem of testing the components and allowing to drawing conclusions about the possibility of using the Boolean complement method in the construction of self-checking discrete systems are given.

KEYWORDS

self-checking built-in checking circuit, concurrent error-detection system, Boolean complement, the constant-weight codes, «1-out-of-3» code, self-checking structure.

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