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Vehicle information rewriting system

A technology of vehicle information and rewriting system, applied in the field of vehicle information rewriting system, can solve the problem of not necessarily and achieve the effect of enhanced certification

Inactive Publication Date: 2008-03-05
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] however, some aspects of performing authentication to ensure that rewriting tools are used only by authorized users have not necessarily been adequately considered

Method used

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  • Vehicle information rewriting system
  • Vehicle information rewriting system
  • Vehicle information rewriting system

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Embodiment Construction

[0023] Various embodiments of the present invention are described below with reference to the accompanying drawings.

[0024] FIG. 1 is a block diagram showing an electrical configuration of an electronic control unit (ECU) to which a vehicle information rewriting system according to the present invention is applied. The ECU 1 has a main control unit including a CPU 101 . The ECU 1 performs processing by causing the main control unit to execute a predetermined software program to control electronic devices provided on the vehicle C (control target devices: controlled devices). More specifically, ECU 1 is a microcomputer in which CPU 101 , ROM 103 (nonvolatile memory such as flash memory), RAM 102 , and input / output unit (I / O port) 105 are connected via bus 104 .

[0025] The ROM 103 stores applications 1, 2, etc., which control the target device to realize various on-vehicle functions. The ROM 103 composed of non-volatile memory is electrically rewritable so that the applica...

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PUM

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Abstract

A rewriting tool for rewriting a content of a nonvolatile memory including vehicle information and the like provides a supplemental authentication process that detects a wireless authentication medium associated to an authorized rewriting tool user by wireless polling on an unconditional basis besides authenticating the authorized rewriting tool user based on an input from the rewriting tool for the purpose of an improved security.

Description

technical field [0001] The present disclosure relates to a vehicle information rewriting system. Background technique [0002] A motor vehicle (hereinafter referred to as "vehicle") has an ECU mounted thereon for controlling various devices (components to be controlled). The ECU has a main control unit including a CPU, and controls electronic devices mounted on a vehicle by executing predetermined software programs. The software program is stored in a non-volatile memory such as a flash memory so that it can be updated as needed for upgrading or debugging (see Japanese Patent Document JP-A-2003-337748, JP-A- 2003-172199 and JP-A-2001-229014). In order to update the applications on the vehicle, in many cases the owner takes the vehicle to a dealer or the like. At a car dealer, a dedicated rewriting tool for an ECU including a software program to be rewritten is connected to the ECU by communication, and an operator uses the rewriting tool to rewrite the software program. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418G06F12/14G06F9/445G06F21/12G06F21/31G06F21/32G06F21/34G06F21/60G06F21/62
CPCG06F21/35
Inventor 岸田昌之加藤彩森勇二夏目充启
Owner DENSO CORP