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

Claim 0:
1. An in-vehicle communication device installed in a vehicle, the in-vehicle communication device comprising:
a reception unit and a processing unit,
wherein the reception unit receives a plurality of messages from one or more other devices, and
the processing unit:
detects an abnormality in an information included in the plurality of messages received by the reception unit;
generates an estimated information that is estimated normal information corresponding to information in which the abnormality has been detected; and replaces the information included in the plurality of messages received by the reception unit with the estimated information;
determines whether the plurality of messages received by the reception unit 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.