Redundancy and testability in digital filters [articol]

Abstract

Threat issues in specific applications of digital filters are investigated. Since these redundant faults tend to appear in the same general location as testresistant faults, the presence of many redundant faults can hide significant untested faults despite high overall test coverage. Classes of redundant faults that arise in digital filters are described and we propose a suite of technologies for identifying and eliminating the most common redundancies based on arithmetic optimization