Patent ID: 11960875
Assignee: DENSO CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  B | IPC G

Claim 10:
11. A configuration information rewrite instruction method implemented by a vehicle master device that is configured to distribute update data received from a center device to a plurality of rewrite target electronic control units (ECUs) and to instruct the rewrite target ECUs to write the update data, the method comprising: downloading rewrite specification data and update data from the center device upon determining that there is a campaign notification from the center device, wherein the rewrite specification data indicates whether rewriting of the rewrite target ECUs is rewriting of a program or rewriting of configuration information;
determining whether the program is to be rewritten or the configuration information is to be rewritten based on the rewrite specification data;
instructing the rewrite target ECU to rewrite the program with reprogramming data, which is the update data downloaded from the center device, upon determining that the program is to be rewritten; and
instructing the rewrite target ECU to overwrite the configuration information with new configuration information, which is the update data downloaded from the center device, upon determining that the configuration information is to be rewritten.