Patent ID: 11947950
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 3:
4. An over-the-air (OTA) master configured to control a software update for an electronic control unit mounted on a vehicle, the OTA master comprising:
one or more processors configured to:
transmit, to a center, position information indicating a position of the vehicle;
receive, from the center, a distribution package that is encrypted at a security level associated with a region where the vehicle is located based on the position information, the distribution package being encrypted based on information unique to the vehicle when the security level associated with the region where the vehicle is located is equal to or higher than a predetermined threshold and the distribution package being encrypted based on information common to a plurality of the vehicles when the security level associated with the region where the vehicle is located is lower than the predetermined threshold; and
control the software update for a target electronic control unit based on the received distribution package, the target electronic control unit being the electronic control unit that is a target of the software update.