Self-Checking method for concurrent error detection system development based on the constant-weight code “2-out-of-4”

This work is dedicated to concurrent error detection (CED) systems synthesis together with a complete concurrent self-checking structure based on the Boolean complement method. The authors share the view of the CED systems with a complete self-checking structure designed by the Boolean complement method and based on the constant-weight code “2-out-of-4”. Within those systems logical accessories are installed for the purpose of avoiding the choice of operating vectors value which shall simplify the CED systems design process. The minimum number of operating vectors to be defined per the CED systems which should guarantee the entire variety of testing combination per the Boolean complement block as well as per the testing code “2-out-of-4”.