Patent ID: 7607050
Filing Date: 2009-10-20
Classification: G06F

Abstract:
1. A method for recognizing a fault when processing input data in a processing system to form a data packet which contains output data and a test data item, the test data item being formed in order to confirm the validity of the output data, wherein the following method steps are executed serially: the output data are ascertained on the basis of the input data in line with a first processing method; the test data item is ascertained on the basis of the input data in line with a second processing method, with intermediate output data being ascertained on the basis of the input data in line with a third processing method, and the test data item being determined from the ascertained intermediate output data in line with a fourth processing method, wherein the first processing method and the third processing method implement the same function by different routes; the output data and the test data item are linked to one another in a data packet; and a fault is recognized in the processing system if the validity of the output data cannot be confirmed by the test data item; wherein the determination of the test data item in line with the fourth processing method is followed by the intermediate output data being discarded.