Patent ID: 9740584
Date: 2017-08-22
CPC Classifications: G06F

Claim:
1. A method for testing a computer core in a processor having at least two computer cores, the computer cores being interconnected via an internal connecting system, and both computer cores making a contribution toward an operating sequence of a machine, the method comprising: performing a first test by: posing a first test inquiry to both of the computer cores, wherein the first test inquiry proposes that a first one of the computer cores be tested by a second one of the computer cores; and in response to both computer cores consenting to the first test inquiry: putting the first one of the computer cores in a test mode; sending first test data from the second one of the computer cores to the first one of the computer cores; and using the second one of the computer cores to check the correctness of test results of the first one of the computer cores after termination of the first test, wherein the performing of the first test occurs during the operating sequence of the machine and while a first program for executing the operating sequence of the machine is being processed in the second one of the computer cores; wherein the computer cores are configured to simultaneously contribute to the operating sequence of the machine when neither of the computer cores is being tested; wherein the machine is a motor vehicle; wherein the consenting of both computer cores to the first test inquiry includes a determining, during a current driving operation of the motor vehicle, by both computer cores that the test inquiry can be performed without disturbing the driving operation of the motor vehicle; wherein at least one of the computer cores denies consent if one of an engine rotational speed is above a threshold speed and if an immediately previous instance of fuel injection occurred more than a predetermined period of time ago.