| 摘要 |
PROBLEM TO BE SOLVED: To improve security, reliability, availability, and cost in a self-diagnosis.SOLUTION: A self-diagnosis apparatus executes processing more than once by a previously-set application in a certain period and compares a plurality of results of executed processing to perform the self-diagnosis. The apparatus includes a secure application processing unit for executing the application more than once under a condition set by a diverse diagnostic method, a memory for storing a plurality of processing results obtained by the secure application processing unit in a predetermined save area, and a first postprocessing unit for comparing the plurality of processing results stored in the memory to determine if any error is present depending on whether the compared results indicate coincidence or are within a predetermined error range, thus solving the problem. |
