Patent ID: 11914708
Assignee: INFINEON TECHNOLOGIES AG
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 21:
22. A safety-security system, comprising:
a first processing circuit arranged on a first processing thread, the first processing circuit configured to receive an input set and generate a first output based on the input set;
a second processing circuit arranged on a second processing thread, the second processing circuit configured to receive the input set and to generate a second output based on the input set, wherein the input set received by the second processing circuit is the same as the input set received by the first processing circuit;
a random sequence generator configured to generate a random bit sequence;
a first delay circuit coupled to an input of the first processing circuit and configured to receive the input set, and to delay outputting the input set to the first processing circuit based on a delay;
a second delay circuit coupled to an output of the second processing circuit and configured to receive the second output and to delay outputting the second output based on the delay;
a random output selector configured to receive the first output, the delayed second output, and the random bit sequence, and further configured to select a random output from among the first output and the delayed second output based on the random bit sequence, and to randomly output either the first output or the delayed second output as the random output; and
a fault detection circuit configured to receive the first output and the delayed second output, and to generate a comparison result based on comparing the first output with the delayed second output.