公开(公告)号：US11199836B2

公开(公告)日：2021-12-14

申请号：US16269594

申请日：2019-02-07

Applicant: Infineon Technologies AG

Inventor： Bernhard Greslehner-Nimmervoll ,  Rainer Findenig ,  Christian Schmid

IPC: G05B23/02 ,  G05B9/02 ,  H03M13/09 ,  G06F16/901 ,  G05B19/042

Abstract: A device for monitoring a digital control unit with regard to functional safety is proposed. The device comprises an interface configured to receive a control signal of the digital control unit for a circuit component. The control signal represents a digital value. Furthermore, the device comprises a timer circuit configured to output an associated timer value in each case for successive points in time. The device furthermore comprises a hash value generator, which is configurable, in response to a change in the digital value, to recalculate a hash value on the basis of the change in the digital value and the timer value at the point in time of the change in the digital value.