公开(公告)号：US20240256259A1

公开(公告)日：2024-08-01

申请号：US18617974

申请日：2024-03-27

Applicant: DENSO CORPORATION

Inventor： Hideo YOSHIMI ,  Masaki ABE ,  Koto TOMATSU

IPC: G06F8/65 ,  H04L9/14 ,  H04L9/40

CPC classification number: G06F8/65 ,  H04L9/14 ,  H04L63/166

Abstract: A data communication system includes a center device that places update data in a content delivery network (CDN); and a master device that installs the update data downloaded from the CDN in an electronic control unit to be reprogrammed. The center device is connected to CDNs of a plurality of business operators, selects a CDN with a superior distribution cost from the CDNs of the plurality of business operators according to at least one of a distribution method, a distribution area, a communication protocol, and a distribution data size, and places the update data in the selected CDN without encrypting the update data. The master device establishes transport layer security (TLS) with the CDN, and then downloads the update data from the CDN.