VEHICULAR ELECTRONIC CONTROL SYSTEM, FILE TRANSFER CONTROL METHOD, FILE TRANSFER CONTROL PROGRAM, AND DATA STRUCTURE OF SPECIFICATION DATA

摘要

This vehicular electronic control system (1) comprises a second device (13) equipped with: a file-to-be-transferred specification unit (82a) that specifies, as a file to be transferred, a file containing update data to be written to a third device; a first data size specification unit (82b) that specifies a first data size for acquiring the file to be transferred specified by the file-to-be-transferred specification unit; and an update data distribution unit (73) that uses a divided file transferred from a first device to distribute the update data to the third device. The first device is equipped with an update data transfer unit (64) that transfers the update data by dividing the file to be transferred specified by the file-to-be-transferred specification unit in accordance with the first data size specified by the first data size specification unit, and then transferring the divided file to the second device.