Concurrent Error Detection Using Watchdog Processors

Istvan Majzik
Department of Measurement and Instrument Engineering
Technical University of Budapest
Budapest, Hungary

Ideal checks

Acceptable checks

Error detection

Error detection is based on some form of redundancy: Error detection:


Concurrent, on-line detectors of transient errors:

Watchdog processors

They monitor the behavior of the main processors. initially, WP is given reference information about the main processor. At run-time, it compares it with the information received form the main processor.