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.

公开(公告)号：US20240169076A1

公开(公告)日：2024-05-23

申请号：US18425796

申请日：2024-01-29

Applicant: Denso Corporation

Inventor： Hideo YOSHIMI ,  Motomasa Futagami ,  Tomoya Ogawa ,  Masaaki Abe ,  Koto Tomatsu

IPC: G06F21/60

CPC classification number: G06F21/602

Abstract: A center apparatus is configured to generate a content key for protecting content, generate a user key corresponding to a user who uses the content, manage a device key corresponding to each vehicle, encrypt the content using the content key, encrypt the content key using the device key; and encrypt a license file including at least a condition for using the content using the user key.

公开(公告)号：US20240119763A1

公开(公告)日：2024-04-11

申请号：US18389895

申请日：2023-12-20

Applicant: DENSO CORPORATION

Inventor： Koto TOMATSU ,  Hideo YOSHIMI ,  Masaaki ABE

IPC: G07C5/00

CPC classification number: G07C5/008

Abstract: An in-vehicle communication system includes a center device that transmits update data to a target device as an electronic control unit installed in a vehicle, a master device that is installed in the vehicle, receives the update data as a distribution package, and transfers the update data to the target device, and the target device that writes the update data transferred from the master device into a storage portion. The center device transmits reprogramming policy metadata to the master device. The master device requests the center device for download metadata. The master device interprets the download metadata, acquires necessary data, and perform data update control of the target device.

公开(公告)号：US20220342660A1

公开(公告)日：2022-10-27

申请号：US17723520

申请日：2022-04-19

Applicant: DENSO CORPORATION

Inventor： Masaaki ABE ,  Hideo YOSHIMI

IPC: G06F8/658 ,  B60W50/00 ,  G06F21/64

Abstract: A center device includes a vehicle information storage unit, a hash value generation unit, and a package generation unit. The vehicle information storage unit stores identification information for electronic control devices mounted in a vehicle and information of software architecture of the electronic control devices together with a type of the vehicle. The hash value generation unit is configured to generate difference data, calculate a hash value of the difference data, and store the calculated hash value in a hash value storage unit, for each electronic control device that is an update target. The package generation unit is configured to generate distribution package for the update target using corresponding hash value stored in the hash value storage unit.

公开(公告)号：US20220075883A1

公开(公告)日：2022-03-10

申请号：US17404372

申请日：2021-08-17

Applicant: DENSO CORPORATION

Inventor： Nao SAKURAI ,  Hideo YOSHIMI

IPC: G06F21/62 ,  H04L29/06 ,  B60W50/14 ,  B60W50/04

Abstract: A center device includes: a consent request unit that is configured to make a consent request to a plurality of devices for data distribution to a vehicle; a consent determination unit that is configured to judge a consent response from each of the plurality of devices; a distribution control unit that is configured to control the data distribution to the vehicle according to a determination result by the consent determination unit; and a necessity determination unit that is configured to determine whether the consent request to the plurality of devices is needed before the consent request are made to the plurality of devices. The consent request unit is further configured to determine whether to make the consent request to the plurality of devices according to a determination result by the necessity determination unit.