Patent ID: 11936494
Assignee: SUMITOMO WIRING SYSTEMS, LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. An information replacement method,
wherein an in-vehicle communication device installed in a vehicle:
detects an abnormality in an information included in a plurality of messages received from one or more other devices;
estimates a normal information corresponding to information in which the abnormality has been detected;
replaces information included in received the plurality of messages with the estimated information;
determines whether the plurality of messages received are periodic messages or non-periodic messages, the periodic messages being messages of the plurality of messages that are periodically transmitted and the non-periodic messages being messages of the plurality of messages that are not periodically transmitted;
determines whether or not the periodic messages have been transmitted at a predetermined cycle; and
only detects abnormalities in information included in the periodic messages determined as having been transmitted at predetermined cycles.