Title:
ELECTRONIC CONTROL DEVICE AND CONTROL METHOD OF ELECTRONIC CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2021189988
Kind Code:
A
Abstract:
To monitor a plurality of cores that an electronic control device has without providing a lock step core.SOLUTION: An electronic control device which comprises a plurality of cores and a memory comprises: a switching control part which selects a core as a class 1 core and a core as a class 2 core to generate a plurality of core pairs made to perform lock step type operation; and an error detection part which compares arithmetic results of a program that the class 1 core and class 2 core execute synchronously for each of the plurality of core pairs, and outputs a determination result indicating at least in which of the class 1 core and class 2 core abnormality is occurring. An error detection part specifies cores in which abnormality is occurring based upon determination results of the plurality of core pairs.SELECTED DRAWING: Figure 1
Inventors:
OKUYAMA SHO
Application Number:
JP2020097420A
Publication Date:
December 13, 2021
Filing Date:
June 04, 2020
Export Citation:
Assignee:
HITACHI ASTEMO LTD
International Classes:
G06F11/16
Attorney, Agent or Firm:
Fujio Patent Office