Patent ID: 6462557
Filing Date: 2002-10-08
Classification: G01R

Abstract:
A system for diagnosing a driver and detecting anomalies therein, the driver having at least one diagnosis node and a voltage associated therewith and operating in a plurality of operating phases, the system comprising:a voltage comparator for comparing the voltage from the at least one diagnosis node to at least one reference voltage and generating a plurality of diagnosis logic signals each indicating a respective type of anomaly; and a coding circuit for receiving the plurality of diagnosis logic signals and providing information relating to an overall operating state of the driver, the information being recognizable by a control unit of the driver, the coding circuit comprising a first circuit portion for storing the plurality of diagnosis logic signals and providing a plurality of corresponding first logic signals each indicating a respective last anomaly to occur after a system reset operation, and a second circuit portion for coding the plurality of first logic signals.