公开(公告)号：US20240015013A1

公开(公告)日：2024-01-11

申请号：US18254457

申请日：2021-08-31

Applicant: HITACHI ASTEMO, LTD.

Inventor： Kosuke SUMIYA ,  Shun KINUGASA ,  Yusuke ABE ,  Atsushi HIRONAKA

IPC: H04L9/32 ,  G06F8/65

CPC classification number: H04L9/32 ,  G06F8/65

Abstract: The purpose of the present invention is to provide a feature which, even when updated data to be written to an ECU is encrypted, is capable of appropriately resuming the writing processing when determined that the writing processing was interrupted while in progress. An electronic control device according to the present invention, wherein a first data block included in the updated data is encrypted by using a second data block, and when the writing processing for writing the first data block to the storage unit is interrupted while in progress, updated data which includes both the first data block and the second data block is reacquired, after which the first data block is decoded again by using the reacquired second data block.

公开(公告)号：US20230252153A1

公开(公告)日：2023-08-10

申请号：US18010297

申请日：2021-02-05

Applicant: Hitachi Astemo, Ltd.

Inventor： Shun KINUGASA ,  Kenji ANDO ,  Yusuke ABE

IPC: G06F21/57 ,  G06F8/654

CPC classification number: G06F21/572 ,  G06F8/654 ,  G06F2221/033

Abstract: Provided is a technique for enabling software having different memory maps to be written in a nonvolatile memory of an electronic control device in reprogramming of control software.
The electronic control device includes a microcomputer including a CPU and a nonvolatile memory. The nonvolatile memory includes activation software, control software, and validity confirmation information for confirming validity of the control software. A storage area of the validity confirmation information in the nonvolatile memory is different from a storage area of the activation software.

公开(公告)号：US20220276851A1

公开(公告)日：2022-09-01

申请号：US17628506

申请日：2020-07-21

Applicant: HITACHI ASTEMO, LTD.

Inventor： Fumiharu NAKAHARA ,  Yusuke ABE ,  Yusuke KOGURE

IPC: G06F8/65 ,  G07C5/00 ,  G07C5/08

Abstract: A vehicle controller with improved usability related to updating of a control program is provided. The vehicle controller is capable of updating a stored control program, based on update contents provided by a writing device. The control program includes a control code, and control data that is referred to when the control code is executed. The vehicle controller includes a nonvolatile memory that allows a first memory area and a second memory area to be switched and used alternately, the first memory area and the second memory area each storing both the control code and the control data, and an updating request determining unit that determines whether an updating request from the writing device requests updating of both the control code and the control data or requests updating of the control data only. When determining that updating of the control data only is requested, the updating request determining unit writes received control data to any given memory area in which a currently active control program is stored.

公开(公告)号：US20240004633A1

公开(公告)日：2024-01-04

申请号：US18254447

申请日：2021-08-31

Applicant: HITACHI ASTEMO, LTD.

Inventor： Shun KINUGASA ,  Kosuke SUMIYA ,  Yusuke ABE ,  Atsushi HIRONAKA

IPC: G06F8/65 ,  H04L9/40

CPC classification number: G06F8/65 ,  H04L63/0428

Abstract: The purpose of the present invention is to provide technology whereby a retransmission start address can be properly identified even when update data is compressed or encrypted. In the electronic control device according to the present invention, update data includes at least one of compressed data and encrypted data and includes unprocessed data that is neither compressed nor encrypted, and the unprocessed data retains an address list that can identify the positions of data blocks included in the update data.